Cloudlog/application/models/Logbook_model.php

<?php

class Logbook_model extends CI_Model {

  /* Add QSO to Logbook */
  function create_qso() {

    $callsign = str_replace('Ø', '0', $this->input->post('callsign'));
    // Join date+time
    $datetime = date("Y-m-d",strtotime($this->input->post('start_date')))." ". $this->input->post('start_time');
    if ($this->input->post('prop_mode') != null) {
            $prop_mode = $this->input->post('prop_mode');
    } else {
            $prop_mode = "";
    }

    if($this->input->post('sat_name')) {
        $prop_mode = "SAT";
    }

    // Contest exchange, need to separate between serial and other type of exchange
    if($this->input->post('exchangetype')) {
      switch ($this->input->post('exchangetype')) {
        case 'Exchange':
          $srx_string = $this->input->post('exch_rcvd') == '' ? null : $this->input->post('exch_rcvd');
          $stx_string = $this->input->post('exch_sent') == '' ? null : $this->input->post('exch_sent');
          $srx = null;
          $stx = null;
          break;
        case 'Gridsquare':
          $srx_string = null;
          $stx_string = null;
          $srx = null;
          $stx = null;
          break;
        case 'Serial':
          $srx = $this->input->post('exch_serial_r') == '' ? null : $this->input->post('exch_serial_r');
          $stx = $this->input->post('exch_serial_s') == '' ? null : $this->input->post('exch_serial_s');
          $srx_string = null;
          $stx_string = null;
          break;
        case 'Serialexchange':
          $srx_string = $this->input->post('exch_rcvd') == '' ? null : $this->input->post('exch_rcvd');
          $stx_string = $this->input->post('exch_sent') == '' ? null : $this->input->post('exch_sent');
          $srx = $this->input->post('exch_serial_r') == '' ? null : $this->input->post('exch_serial_r');
          $stx = $this->input->post('exch_serial_s') == '' ? null : $this->input->post('exch_serial_s');
          break;
        case 'Serialgridsquare':
          $srx = $this->input->post('exch_serial_r') == '' ? null : $this->input->post('exch_serial_r');
          $stx = $this->input->post('exch_serial_s') == '' ? null : $this->input->post('exch_serial_s');
          $srx_string = null;
          $stx_string = null;
          break;
          case 'None':
            $srx_string = null;
            $stx_string = null;
            $srx = null;
            $stx = null;
            break;
      }
    } else {
      $srx_string = null;
      $stx_string = null;
      $srx = null;
      $stx = null;
    }

    if($this->input->post('contestname')) {
        $contestid = $this->input->post('contestname');
    } else {
        $contestid = null;
    }

    if($this->session->userdata('user_locator')){
        $locator = $this->session->userdata('user_locator');
    } else {
        $locator = $this->config->item('locator');
    }

    if($this->input->post('transmit_power')) {
        $tx_power = $this->input->post('transmit_power');
    } else {
        $tx_power = null;
    }

    if($this->input->post('country') == "") {
      $dxcc = $this->check_dxcc_table(strtoupper(trim($callsign)), $datetime);
      $country = ucwords(strtolower($dxcc[1]), "- (/");
    } else {
      $country = $this->input->post('country');
    }

    if($this->input->post('cqz') == "") {
      $dxcc = $this->check_dxcc_table(strtoupper(trim($callsign)), $datetime);
      if (empty($dxcc[2])) {
        $cqz = null;
      } else {
        $cqz = $dxcc[2];
      }
    } else {
      $cqz = $this->input->post('cqz');
    }

    if($this->input->post('dxcc_id') == "") {

      $dxcc = $this->check_dxcc_table(strtoupper(trim($callsign)), $datetime);
      if (empty($dxcc[0])) {
        $dxcc_id = null;
      } else {
       $dxcc_id = $dxcc[0];
      }

    } else {
        $dxcc_id = $this->input->post('dxcc_id');
    }

    if($this->input->post('continent') == "") {

      $dxcc = $this->check_dxcc_table(strtoupper(trim($callsign)), $datetime);
      if (empty($dxcc[3])) {
        $continent = null;
      } else {
       $continent = $dxcc[3];
      }

    } else {
        $continent = $this->input->post('continent');
    }

    $mode = $this->get_main_mode_if_submode($this->input->post('mode'));
    if ($mode == null) {
        $mode = $this->input->post('mode');
        $submode = null;
    } else {
        $submode = $this->input->post('mode');
    }

    if($this->input->post('county') && $this->input->post('usa_state')) {
      $clean_county_input = trim($this->input->post('usa_state')) . "," . trim($this->input->post('county'));
    } else {
      $clean_county_input = null;
    }

    if($this->input->post('copyexchangetodok')) {
      $darc_dok = $this->input->post('exch_rcvd');
    } else {
      $darc_dok = $this->input->post('darc_dok');
    }

    if ($this->input->post('qsl_sent')) {
        $qsl_sent = $this->input->post('qsl_sent');
    } else {
        $qsl_sent = 'N';
    }

    if ($this->input->post('qsl_rcvd')) {
        $qsl_rcvd = $this->input->post('qsl_rcvd');
    } else {
        $qsl_rcvd = 'N';
    }

    if ($qsl_sent == 'N') {
        $qslsdate = null;
    } else {
        $qslsdate = date('Y-m-d H:i:s');
    }

    if ($qsl_rcvd == 'N') {
        $qslrdate = null;
    } else {
        $qslrdate = date('Y-m-d H:i:s');
    }

    // Create array with QSO Data
    $data = array(
            'COL_TIME_ON' => $datetime,
            'COL_TIME_OFF' => $datetime,
            'COL_CALL' => strtoupper(trim($callsign)),
            'COL_BAND' => $this->input->post('band'),
            'COL_BAND_RX' => $this->input->post('band_rx'),
            'COL_FREQ' => $this->parse_frequency($this->input->post('freq_display')),
            'COL_MODE' => $mode,
            'COL_SUBMODE' => $submode,
            'COL_RST_RCVD' => $this->input->post('rst_rcvd'),
            'COL_RST_SENT' => $this->input->post('rst_sent'),
            'COL_NAME' => $this->input->post('name'),
            'COL_COMMENT' => $this->input->post('comment'),
            'COL_SAT_NAME' => $this->input->post('sat_name') == null ? '' : strtoupper($this->input->post('sat_name')),
            'COL_SAT_MODE' => $this->input->post('sat_mode') == null ? '' : strtoupper($this->input->post('sat_mode')),
            'COL_COUNTRY' => $country,
            'COL_CONT' => $continent,
            'COL_QSLSDATE' => $qslsdate,
            'COL_QSLRDATE' => $qslrdate,
            'COL_QSL_SENT' => $qsl_sent,
            'COL_QSL_RCVD' => $qsl_rcvd,
            'COL_QSL_SENT_VIA' => $this->input->post('qsl_sent_method'),
            'COL_QSL_RCVD_VIA' => $this->input->post('qsl_rcvd_method'),
            'COL_QSL_VIA' => $this->input->post('qsl_via'),
            'COL_QSLMSG' => $this->input->post('qslmsg'),
            'COL_OPERATOR' => $this->input->post('operator_callsign') ?? $this->session->userdata('operator_callsign'),
            'COL_QTH' => $this->input->post('qth'),
            'COL_PROP_MODE' => $prop_mode,
            'COL_IOTA' => $this->input->post('iota_ref')  == null ? '' : trim($this->input->post('iota_ref')),
            'COL_DISTANCE' => $this->input->post('distance'),
            'COL_FREQ_RX' => $this->parse_frequency($this->input->post('freq_display_rx')),
            'COL_ANT_AZ' => null,
            'COL_ANT_EL' => null,
            'COL_A_INDEX' => null,
            'COL_AGE' => null,
            'COL_TEN_TEN' => null,
            'COL_TX_PWR' => $tx_power,
            'COL_STX' => $stx,
            'COL_SRX' => $srx,
            'COL_STX_STRING' => $stx_string == null ? '' : strtoupper(trim($stx_string)),
            'COL_SRX_STRING' => $srx_string == null ? '' : strtoupper(trim($srx_string)),
            'COL_CONTEST_ID' => $contestid,
            'COL_NR_BURSTS' => null,
            'COL_NR_PINGS' => null,
            'COL_MAX_BURSTS' => null,
            'COL_K_INDEX' => null,
            'COL_SFI' => null,
            'COL_RX_PWR' => null,
            'COL_LAT' => null,
            'COL_LON' => null,
            'COL_DXCC' => $dxcc_id,
            'COL_CQZ' => $cqz,
            'COL_STATE' => $this->input->post('usa_state') == null ? '' : trim($this->input->post('usa_state')),
            'COL_CNTY' => $clean_county_input,
            'COL_SOTA_REF' => $this->input->post('sota_ref') == null ? '' : trim($this->input->post('sota_ref')),
            'COL_WWFF_REF' => $this->input->post('wwff_ref') == null ? '' : trim($this->input->post('wwff_ref')),
            'COL_POTA_REF' => $this->input->post('pota_ref') == null ? '' : trim($this->input->post('pota_ref')),
            'COL_SIG' => $this->input->post('sig') == null ? '' : trim($this->input->post('sig')),
            'COL_SIG_INFO' => $this->input->post('sig_info') == null ? '' : trim($this->input->post('sig_info')),
            'COL_DARC_DOK' => $darc_dok  == null ? '' : strtoupper(trim($darc_dok)),
			      'COL_NOTES' => $this->input->post('notes'),
    );

    $station_id = $this->input->post('station_profile');

    if($station_id == "" || $station_id == "0") {
      $CI =& get_instance();
      $CI->load->model('stations');
      $station_id = $CI->stations->find_active();
    }

	$CI =& get_instance();
	$CI->load->model('stations');
        if (!$CI->stations->check_station_is_accessible($station_id)) {	// Hard Exit if station_profile not accessible
            return 'Station not accessible<br>';
        }


    // If station profile has been provided fill in the fields
    if($station_id != "0") {
      $station = $this->check_station($station_id);
        $data['station_id'] = $station_id;

      if (strpos(trim($station['station_gridsquare']), ',') !== false) {
        $data['COL_MY_VUCC_GRIDS'] = strtoupper(trim($station['station_gridsquare']));
      } else {
        $data['COL_MY_GRIDSQUARE'] = strtoupper(trim($station['station_gridsquare']));
      }

    if ($this->exists_hrdlog_code($station_id)) {
        $data['COL_HRDLOG_QSO_UPLOAD_STATUS'] = 'N';
    }

    if ($this->exists_qrz_api_key($station_id)) {
        $data['COL_QRZCOM_QSO_UPLOAD_STATUS'] = 'N';
    }

      $data['COL_MY_CITY'] = strtoupper(trim($station['station_city']));
      $data['COL_MY_IOTA'] = strtoupper(trim($station['station_iota']));
      $data['COL_MY_SOTA_REF'] = strtoupper(trim($station['station_sota']));
      $data['COL_MY_WWFF_REF'] = strtoupper(trim($station['station_wwff']));
      $data['COL_MY_POTA_REF'] = $station['station_pota'] == null ? '' : strtoupper(trim($station['station_pota']));

      $data['COL_STATION_CALLSIGN'] = strtoupper(trim($station['station_callsign']));
      $data['COL_MY_DXCC'] = strtoupper(trim($station['station_dxcc']));
      $data['COL_MY_COUNTRY'] = strtoupper(trim($station['station_country']));
      $data['COL_MY_CNTY'] = strtoupper(trim($station['station_cnty']));
      $data['COL_MY_CQ_ZONE'] = strtoupper(trim($station['station_cq']));
      $data['COL_MY_ITU_ZONE'] = strtoupper(trim($station['station_itu']));
    }

    // Decide whether its single gridsquare or a multi which makes it vucc_grids
    if (strpos(trim($this->input->post('locator')), ',') !== false) {
      $data['COL_VUCC_GRIDS'] = strtoupper(trim($this->input->post('locator')));
    } else {
      $data['COL_GRIDSQUARE'] = strtoupper(trim($this->input->post('locator')));
    }

    // if eQSL username set, default SENT & RCVD to 'N' else leave as null
    if ($this->session->userdata('user_eqsl_name')){
        $data['COL_EQSL_QSL_SENT'] = 'N';
        $data['COL_EQSL_QSL_RCVD'] = 'N';
    }

    // if LoTW username set, default SENT & RCVD to 'N' else leave as null
    if ($this->session->userdata('user_lotw_name')){
        $data['COL_LOTW_QSL_SENT'] = 'N';
        $data['COL_LOTW_QSL_RCVD'] = 'N';
    }

    $this->add_qso($data, $skipexport = false);
  }

  public function check_last_lotw($call){	// Fetch difference in days when $call has last updated LotW

	  $sql="select datediff(now(),lastupload) as DAYS from lotw_users where callsign = ?";	// Use binding to prevent SQL-injection
	  $query = $this->db->query($sql, $call);
	  $row = $query->row();
	  if (isset($row)) {
		  return($row->DAYS);
	  }
  }

  public function check_station($id){

    $this->db->select('station_profile.*, dxcc_entities.name as station_country');
    $this->db->join('dxcc_entities','station_profile.station_dxcc = dxcc_entities.adif','left outer');
    $this->db->where('station_id', $id);
    $query = $this->db->get('station_profile');

    if ($query->num_rows() > 0) {
      $row = $query->row_array();
        return($row);
    }
  }
	/*
	 * Used to fetch QSOs from the logbook in the awards
	 */
	public function qso_details($searchphrase, $band, $mode, $type, $qsl, $searchmode = null){
		$CI =& get_instance();
		$CI->load->model('logbooks_model');
		$logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

		$this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
		$this->db->join('dxcc_entities', 'dxcc_entities.adif = '.$this->config->item('table_name').'.COL_DXCC', 'left outer');
		$this->db->join('lotw_users', 'lotw_users.callsign = '.$this->config->item('table_name').'.col_call', 'left outer');
		switch ($type) {
		case 'DXCC':
			$this->db->where('COL_COUNTRY', $searchphrase);
			break;
		case 'DXCC2':
			$this->db->where('COL_DXCC', $searchphrase);
			break;
		case 'IOTA':
			$this->db->where('COL_IOTA', $searchphrase);
			break;
		case 'VUCC':
			if ($searchmode == 'activated') {
				$this->db->where("station_gridsquare like '%" . $searchphrase . "%'");
			} else {
				$this->db->where("(COL_GRIDSQUARE like '" . $searchphrase . "%' OR COL_VUCC_GRIDS like '%" . $searchphrase ."%')");
			}
			break;
		case 'CQZone':
			$this->db->where('COL_CQZ', $searchphrase);
			break;
		case 'WAS':
			$this->db->where('COL_STATE', $searchphrase);
			$this->db->where_in('COL_DXCC', ['291', '6', '110']);
			break;
		case 'SOTA':
			$this->db->where('COL_SOTA_REF', $searchphrase);
			break;
		case 'WWFF':
			$this->db->where('COL_WWFF_REF', $searchphrase);
			break;
		case 'POTA':
			$this->db->where('COL_POTA_REF', $searchphrase);
			break;
		case 'DOK':
			$this->db->where('COL_DARC_DOK', $searchphrase);
			break;
		case 'QSLRDATE':
			$this->db->where('date(COL_QSLRDATE)=date(SYSDATE())');
			break;
		case 'QSLSDATE':
			$this->db->where('date(COL_QSLSDATE)=date(SYSDATE())');
			break;
		case 'EQSLRDATE':
			$this->db->where('date(COL_EQSL_QSLRDATE)=date(SYSDATE())');
			break;
		case 'EQSLSDATE':
			$this->db->where('date(COL_EQSL_QSLSDATE)=date(SYSDATE())');
			break;
		case 'LOTWRDATE':
			$this->db->where('date(COL_LOTW_QSLRDATE)=date(SYSDATE())');
			break;
		case 'LOTWSDATE':
			$this->db->where('date(COL_LOTW_QSLSDATE)=date(SYSDATE())');
			break;
		}

    $this->db->where_in($this->config->item('table_name').'.station_id', $logbooks_locations_array);

		if ($band != 'All') {
			if($band != "SAT") {
				$this->db->where('COL_PROP_MODE !=', 'SAT');
				$this->db->where('COL_BAND', $band);
			} else {
				$this->db->where('COL_PROP_MODE', "SAT");
			}
		}

		if (!empty($qsl)) {
			$qslfilter = array();
			if (strpos($qsl, "Q") !== false) {
				$qslfilter[] = 'COL_QSL_RCVD = "Y"';
			}
			if (strpos($qsl, "L") !== false) {
				$qslfilter[] = 'COL_LOTW_QSL_RCVD = "Y"';
			}
			if (strpos($qsl, "E") !== false) {
				$qslfilter[] = 'COL_EQSL_QSL_RCVD = "Y"';
			}
			$sql = "(".implode(' OR ', $qslfilter).")";
			$this->db->where($sql);
		}

		if ($mode != 'All') {
			$this->db->where("(COL_MODE='" . $mode . "' OR COL_SUBMODE='" . $mode ."')");
		}
		$this->db->order_by("COL_TIME_ON", "desc");

		$this->db->limit(500);

		return $this->db->get($this->config->item('table_name'));
	}

	public function activated_grids_qso_details($searchphrase, $band, $mode){
		$CI =& get_instance();
		$CI->load->model('logbooks_model');
		$logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

		$sql =  'SELECT COL_FREQ, COL_SOTA_REF, COL_OPERATOR, COL_IOTA, COL_VUCC_GRIDS, COL_STATE, COL_GRIDSQUARE, COL_PRIMARY_KEY, COL_CALL, COL_TIME_ON, COL_BAND, COL_SAT_NAME, COL_MODE, COL_SUBMODE, COL_RST_SENT, ';
		$sql .= 'COL_RST_RCVD, COL_STX, COL_SRX, COL_STX_STRING, COL_SRX_STRING, COL_COUNTRY, COL_QSL_SENT, COL_QSL_SENT_VIA, ';
		$sql .= 'COL_QSLSDATE, COL_QSL_RCVD, COL_QSL_RCVD_VIA, COL_QSLRDATE, COL_EQSL_QSL_SENT, COL_EQSL_QSLSDATE, COL_EQSL_QSLRDATE, ';
		$sql .= 'COL_EQSL_QSL_RCVD, COL_LOTW_QSL_SENT, COL_LOTW_QSLSDATE, COL_LOTW_QSL_RCVD, COL_LOTW_QSLRDATE, COL_CONTEST_ID, station_gridsquare, dxcc_entities.name as name, dxcc_entities.end as end, callsign, lastupload ';
		$sql .= 'FROM '.$this->config->item('table_name').' JOIN `station_profile` ON station_profile.station_id = '.$this->config->item('table_name').'.station_id ';
      $sql .= 'LEFT OUTER JOIN `dxcc_entities` ON dxcc_entities.adif = '.$this->config->item('table_name').'.COL_DXCC ';
      $sql .= 'LEFT OUTER JOIN `lotw_users` ON lotw_users.callsign = '.$this->config->item('table_name').'.COL_CALL ';
		$sql .= 'WHERE '.$this->config->item('table_name').'.station_id IN (SELECT station_id from station_profile ';
		$sql .= 'WHERE station_gridsquare LIKE "%'.$searchphrase.'%") ';

		if ($band != 'All') {
			if($band != "SAT") {
				$sql .= 'AND COL_PROP_MODE != "SAT" AND ';
				$sql .= 'COL_BAND = "'.$band.'" ';
			} else {
				$sql .= 'AND COL_PROP_MODE = "SAT"';
			}
		}

		if ($mode != 'All') {
			$sql .= ' AND COL_MODE = "'.$mode.'" OR COL_SUBMODE="'.$mode.'"';
		}
		$sql .= ' ORDER BY COL_TIME_ON DESC LIMIT 500';

		return $this->db->query($sql);
	}

    public function vucc_qso_details($gridsquare, $band) {
		$CI =& get_instance();
		$CI->load->model('logbooks_model');
		$logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

		$location_list = "'".implode("','",$logbooks_locations_array)."'";

        $sql = "select * from " . $this->config->item('table_name') .
                " where station_id in (" . $location_list . ")" .
                " and (col_gridsquare like '" . $gridsquare. "%'
                    or col_vucc_grids like '%" . $gridsquare. "%')";

        if ($band != 'All') {
            if ($band == 'SAT') {
                $sql .= " and col_prop_mode ='" . $band . "'";
            } else {
                $sql .= " and col_prop_mode !='SAT'";
                $sql .= " and col_band ='" . $band . "'";
            }
        }

        return $this->db->query($sql);
    }

    public function activator_details($call, $band, $leogeo){
		$CI =& get_instance();
		$CI->load->model('logbooks_model');
		$logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

      $this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
      $this->db->join('dxcc_entities', 'dxcc_entities.adif = '.$this->config->item('table_name').'.COL_DXCC', 'left outer');
        $this->db->where('COL_CALL', $call);
        if ($band != 'All') {
            if ($band == 'SAT') {
                $this->db->where('col_prop_mode', $band);
                switch ($leogeo) {
                case 'leo' :  $this->db->where('COL_SAT_NAME !=', 'QO-100');
                              break;
                case 'geo':   $this->db->where('COL_SAT_NAME', 'QO-100');
                              break;
                }
            } else {
                $this->db->where('COL_PROP_MODE !=', 'SAT');
                $this->db->where('col_band', $band);
            }
        }

        $this->db->where_in('station_profile.station_id', $logbooks_locations_array);
        $this->db->order_by('COL_TIME_ON', 'DESC');

        return $this->db->get($this->config->item('table_name'));
    }

  public function get_callsigns($callsign){
    $this->db->select('COL_CALL');
    $this->db->distinct();
    $this->db->like('COL_CALL', $callsign);

    return $this->db->get($this->config->item('table_name'));

  }

  public function get_dok($callsign){
    $this->db->select('COL_DARC_DOK');
    $this->db->where('COL_CALL', $callsign);
    $this->db->order_by("COL_TIME_ON", "desc");
    $this->db->limit(1);

    return $this->db->get($this->config->item('table_name'));

  }

  function add_qso($data, $skipexport = false) {

    if ($data['COL_DXCC'] == "Not Found"){
      $data['COL_DXCC'] = NULL;
    }

    if (!is_null($data['COL_RX_PWR'])) {
      $data['COL_RX_PWR'] = str_replace("W", "", $data['COL_RX_PWR']);
    }

    // Add QSO to database
    $this->db->insert($this->config->item('table_name'), $data);

    $last_id = $this->db->insert_id();

    if ($this->session->userdata('user_amsat_status_upload') && $data['COL_PROP_MODE'] == "SAT") {
       $this->upload_amsat_status($data);
    }

    // No point in fetching hrdlog code or qrz api key and qrzrealtime setting if we're skipping the export
	if (!$skipexport) {


		$result = $this->exists_hrdlog_code($data['station_id']);
		// Push qso to hrdlog if code is set, and realtime upload is enabled, and we're not importing an adif-file
		if (isset($result->hrdlog_code) && $result->hrdlogrealtime == 1) {
			$CI =& get_instance();
			$CI->load->library('AdifHelper');
			$qso = $this->get_qso($last_id,true)->result();

			$adif = $CI->adifhelper->getAdifLine($qso[0]);
			$result = $this->push_qso_to_hrdlog($result->hrdlog_code, $data['COL_STATION_CALLSIGN'], $adif);
			if ( ($result['status'] == 'OK') || ( ($result['status'] == 'error') || ($result['status'] == 'duplicate') || ($result['status'] == 'auth_error') )){
				$this->mark_hrdlog_qsos_sent($last_id);
			}
		}
		$result = ''; // Empty result from previous hrdlog-attempt for safety
		$result = $this->exists_qrz_api_key($data['station_id']);
// Push qso to qrz if apikey is set, and realtime upload is enabled, and we're not importing an adif-file
		if (isset($result->qrzapikey) && $result->qrzrealtime == 1) {
			$CI =& get_instance();
			$CI->load->library('AdifHelper');
			$qso = $this->get_qso($last_id,true)->result();

			$adif = $CI->adifhelper->getAdifLine($qso[0]);
			$result = $this->push_qso_to_qrz($result->qrzapikey, $adif);
			if ( ($result['status'] == 'OK') || ( ($result['status'] == 'error') && ($result['message'] == 'STATUS=FAIL&REASON=Unable to add QSO to database: duplicate&EXTENDED=')) ){
				$this->mark_qrz_qsos_sent($last_id);
			}
		}

		$result = $this->exists_webadif_api_key($data['station_id']);
		// Push qso to webadif if apikey is set, and realtime upload is enabled, and we're not importing an adif-file
		if (isset($result->webadifapikey) && $result->webadifrealtime == 1) {
			$CI =& get_instance();
			$CI->load->library('AdifHelper');
			$qso = $this->get_qso($last_id,true)->result();

			$adif = $CI->adifhelper->getAdifLine($qso[0]);
			$result = $this->push_qso_to_webadif(
				$result->webadifapiurl,
				$result->webadifapikey,
				$adif
			);

			if ($result) {
				$this->mark_webadif_qsos_sent([$last_id]);
			}
		}
	}
  }

  /*
   * Function checks if a HRDLog Code exists in the table with the given station id
   */
  function exists_hrdlog_code($station_id) {
	  $sql = 'select hrdlog_code, hrdlogrealtime from station_profile
		  where station_id = ' . $station_id;

	  $query = $this->db->query($sql);

	  $result = $query->row();

	  if ($result) {
		  return $result;
	  } else {
		  return false;
	  }
  }

  /*
   * Function checks if a QRZ API Key exists in the table with the given station id
  */
  function exists_qrz_api_key($station_id) {
      $sql = 'select qrzapikey, qrzrealtime from station_profile
            where station_id = ' . $station_id;

      $query = $this->db->query($sql);

      $result = $query->row();

      if ($result) {
          return $result;
      }
      else {
          return false;
      }
  }

	/*
	 * Function checks if a WebADIF API Key exists in the table with the given station id
	*/
	function exists_webadif_api_key($station_id) {
		$sql = 'select webadifapikey, webadifapiurl, webadifrealtime from station_profile
            where station_id = ' . $station_id;

		$query = $this->db->query($sql);

		$result = $query->row();

		if ($result) {
			return $result;
		}
		else {
			return false;
		}
	}

  /*
   * Function uploads a QSO to HRDLog with the API given.
   * $adif contains a line with the QSO in the ADIF format. QSO ends with an <EOR>
   */
  function push_qso_to_hrdlog($apikey, $station_callsign, $adif, $replaceoption = false) {
	  $url = 'https://robot.hrdlog.net/newentry.aspx';

	  $post_data['Code'] = $apikey;
	  if ($replaceoption) {
		  $post_data['Cmd'] = 'UPDATE';
		  $post_data['ADIFKey'] = $adif;
	  }
	  $post_data['ADIFData'] = $adif;

	  $post_data['Callsign'] = $station_callsign;


	  $post_encoded=http_build_query($post_data);

	  $ch = curl_init( $url );
	  curl_setopt( $ch, CURLOPT_POST, true);
	  curl_setopt( $ch, CURLOPT_POSTFIELDS, $post_encoded);
	  curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, 1);
	  curl_setopt( $ch, CURLOPT_HEADER, 0);
	  curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true);
	  curl_setopt( $ch, CURLOPT_HTTPHEADER, array('Content-Type: application/x-www-form-urlencoded'));
	  $content = curl_exec($ch);
	  if ($content){
		  if (stristr($content,'<insert>1')) {
			  $result['status'] = 'OK';
			  return $result;
		  } elseif (stristr($content,'<insert>0')) {
			  $result['status'] = 'duplicate';
			  $result['message'] = $content;
			  return $result;
		  } elseif (stristr($content,'Unknown user</error>')) {
			  $result['status'] = 'auth_error';
			  $result['message'] = $content;
			  return $result;
		  } else {
			  $result['status'] = 'error';
			  $result['message'] = $content;
			  return $result;
		  }
	  }
	  if(curl_errno($ch)){
		  $result['status'] = 'error';
		  $result['message'] = 'Curl error: '. curl_errno($ch);
		  return $result;
	  }
	  curl_close($ch);
  }

  /*
   * Function uploads a QSO to QRZ with the API given.
   * $adif contains a line with the QSO in the ADIF format. QSO ends with an <EOR>
   */
  function push_qso_to_qrz($apikey, $adif, $replaceoption = false) {
      $url = 'http://logbook.qrz.com/api'; // TODO: Move this to database

      $post_data['KEY'] = $apikey;
      $post_data['ACTION'] = 'INSERT';
      $post_data['ADIF'] = $adif;

      if ($replaceoption) {
          $post_data['OPTION'] = 'REPLACE';
      }

      $ch = curl_init( $url );
      curl_setopt( $ch, CURLOPT_POST, true);
      curl_setopt( $ch, CURLOPT_POSTFIELDS, $post_data);
      curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, 1);
      curl_setopt( $ch, CURLOPT_HEADER, 0);
      curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true);

      $content = curl_exec($ch);
      if ($content){
          if (stristr($content,'RESULT=OK') || stristr($content,'RESULT=REPLACE')) {
              $result['status'] = 'OK';
              return $result;
          }
          else {
              $result['status'] = 'error';
              $result['message'] = $content;
              return $result;
          }
      }
      if(curl_errno($ch)){
          $result['status'] = 'error';
          $result['message'] = 'Curl error: '. curl_errno($ch);
          return $result;
      }
      curl_close($ch);
  }

	/*
	 * Function uploads a QSO to WebADIF consumer with the API given.
	 * $adif contains a line with the QSO in the ADIF format.
	 */
	function push_qso_to_webadif($url, $apikey, $adif) : bool{

		$headers = array(
			'Content-Type: text/plain',
			'X-API-Key: ' . $apikey
		);

		if (substr($url, -1) !== "/") {
			$url .= "/";
		}

		$ch = curl_init( $url . "qso");
		curl_setopt( $ch, CURLOPT_POST, true);
		curl_setopt( $ch, CURLOPT_POSTFIELDS, (string)$adif);
		curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, 1);
		curl_setopt( $ch, CURLOPT_HEADER, 0);
		curl_setopt( $ch, CURLOPT_HTTPHEADER, $headers);
		curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true);

		$content = curl_exec($ch); // TODO: better error handling
		$errors = curl_error($ch);
		$response = curl_getinfo($ch, CURLINFO_HTTP_CODE);
		curl_close($ch);
		return $response === 200;
	}

  /*
   * Function marks QSOs as uploaded to HRDLog.
   * $primarykey is the unique id for that QSO in the logbook
   */
  function mark_hrdlog_qsos_sent($primarykey) {
	  $data = array(
		  'COL_HRDLOG_QSO_UPLOAD_DATE' => date("Y-m-d H:i:s", strtotime("now")),
		  'COL_HRDLOG_QSO_UPLOAD_STATUS' => 'Y',
	  );

	  $this->db->where('COL_PRIMARY_KEY', $primarykey);

	  $this->db->update($this->config->item('table_name'), $data);

	  return true;
  }

  /*
   * Function marks QSOs as uploaded to QRZ.
   * $primarykey is the unique id for that QSO in the logbook
   */
    function mark_qrz_qsos_sent($primarykey) {
        $data = array(
         'COL_QRZCOM_QSO_UPLOAD_DATE' => date("Y-m-d H:i:s", strtotime("now")),
         'COL_QRZCOM_QSO_UPLOAD_STATUS' => 'Y',
        );

        $this->db->where('COL_PRIMARY_KEY', $primarykey);

        $this->db->update($this->config->item('table_name'), $data);

        return true;
    }

	/*
	* Function marks QSOs as uploaded to WebADIF.
	* $qsoIDs is an arroy of unique id for the QSOs in the logbook
	*/
	function mark_webadif_qsos_sent(array $qsoIDs)
	{
		$data = [];
		$now = date("Y-m-d H:i:s", strtotime("now"));
		foreach ($qsoIDs as $qsoID) {
			$data[] = [
				'upload_date' => $now,
				'qso_id' => $qsoID,
			];
		}
		$this->db->insert_batch('webadif', $data);
		return true;
	}

   function upload_amsat_status($data) {
      $sat_name = '';
      if ($data['COL_SAT_NAME'] == 'AO-7') {
         if ($data['COL_BAND'] == '2m' && $data['COL_BAND_RX'] == '10m') {
            $sat_name = 'AO-7[A]';
         }
         if ($data['COL_BAND'] == '70cm' && $data['COL_BAND_RX'] == '2m') {
            $sat_name = 'AO-7[B]';
         }
      } else if ($data['COL_SAT_NAME'] == 'QO-100') {
         $sat_name = 'QO-100_NB';
      } else if ($data['COL_SAT_NAME'] == 'AO-92') {
         if ($data['COL_BAND'] == '70cm' && $data['COL_BAND_RX'] == '2m') {
            $sat_name = 'AO-92_U/v';
         }
         if ($data['COL_BAND'] == '23cm' && $data['COL_BAND_RX'] == '2m') {
            $sat_name = 'AO-92_L/v';
         }
      } else if ($data['COL_SAT_NAME'] == 'AO-95') {
         if ($data['COL_BAND'] == '70cm' && $data['COL_BAND_RX'] == '2m') {
            $sat_name = 'AO-95_U/v';
         }
         if ($data['COL_BAND'] == '23cm' && $data['COL_BAND_RX'] == '2m') {
            $sat_name = 'AO-95_L/v';
         }
      } else if ($data['COL_SAT_NAME'] == 'PO-101') {
         if ($data['COL_MODE'] == 'PKT') {
            $sat_name = 'PO-101[APRS]';
         } else {
            $sat_name = 'PO-101[FM]';
         }
      } else if ($data['COL_SAT_NAME'] == 'FO-118') {
         if ($data['COL_BAND'] == '2m') {
            if ($data['COL_MODE'] == 'FM') {
               $sat_name = 'FO-118[V/u FM]';
            } else if ($data['COL_MODE'] == 'SSB') {
               $sat_name = 'FO-118[V/u]';
            }
         } else if ($data['COL_BAND'] == '15m') {
            $sat_name = 'FO-118[H/u]';
         }
      } else if ($data['COL_SAT_NAME'] == 'ARISS' || $data['COL_SAT_NAME'] == 'ISS') {
         if ($data['COL_MODE'] == 'FM') {
            $sat_name = 'ISS-FM';
         } else if ($data['COL_MODE'] == 'PKT') {
            $sat_name = 'ISS-DATA';
         }
      } else if ($data['COL_SAT_NAME'] == 'CAS-3H') {
         $sat_name = 'LilacSat-2';
      } else {
         $sat_name = $data['COL_SAT_NAME'];
      }
      $datearray = date_parse_from_format("Y-m-d H:i:s", $data['COL_TIME_ON']);
      $url='https://amsat.org/status/submit.php?SatSubmit=yes&Confirm=yes&SatName='.$sat_name.'&SatYear='.$datearray['year'].'&SatMonth='.str_pad($datearray['month'], 2, '0', STR_PAD_LEFT).'&SatDay='.str_pad($datearray['day'], 2, '0', STR_PAD_LEFT).'&SatHour='.str_pad($datearray['hour'], 2, '0', STR_PAD_LEFT).'&SatPeriod='.(intdiv(($datearray['minute']-1), 15)).'&SatCall='.$data['COL_STATION_CALLSIGN'].'&SatReport=Heard&SatGridSquare='.$data['COL_MY_GRIDSQUARE'];
      $ch = curl_init();
      curl_setopt($ch, CURLOPT_URL, $url);
      curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
      curl_exec($ch);
  }

  /* Edit QSO */
  function edit() {
    $qso = $this->get_qso($this->input->post('id'))->row();

    $entity = $this->get_entity($this->input->post('dxcc_id'));
    $stationId = $this->input->post('station_profile');
    $country = ucwords(strtolower($entity['name']), "- (/");

    // be sure that station belongs to user
    $CI =& get_instance();
    $CI->load->model('stations');
    if (!$CI->stations->check_station_is_accessible($stationId)) {
	    return;
    }

    $station_profile=$CI->stations->profile_clean($stationId);
    $stationCallsign=$station_profile->station_callsign;

    $mode = $this->get_main_mode_if_submode($this->input->post('mode'));
    if ($mode == null) {
        $mode = $this->input->post('mode');
        $submode = null;
    } else {
        $submode = $this->input->post('mode');
    }

    if($this->input->post('transmit_power')) {
      $txpower = $this->input->post('transmit_power');
    } else {
      $txpower = null;
    }

    if($this->input->post('stx')) {
      $stx_string = $this->input->post('stx');
    } else {
      $stx_string = null;
    }

    if($this->input->post('srx')) {
      $srx_string = $this->input->post('srx');
    } else {
      $srx_string = null;
    }

    if ($this->input->post('usa_county') && $this->input->post('usa_state')) {
      $uscounty = trim($this->input->post('usa_state') . "," . $this->input->post('usa_county'));
    } else {
      $uscounty = null;
    }

    if ($this->input->post('qsl_sent')) {
        $qsl_sent = $this->input->post('qsl_sent');
    } else {
        $qsl_sent = 'N';
    }

    if ($this->input->post('qsl_rcvd')) {
        $qsl_rcvd = $this->input->post('qsl_rcvd');
    } else {
        $qsl_rcvd = 'N';
    }

    if ($this->input->post('eqsl_sent')) {
        $eqsl_sent = $this->input->post('eqsl_sent');
    } else {
        $eqsl_sent = 'N';
    }

    if ($this->input->post('eqsl_rcvd')) {
        $eqsl_rcvd = $this->input->post('eqsl_rcvd');
    } else {
        $eqsl_rcvd = 'N';
    }

    if ($this->input->post('lotw_sent')) {
        $lotw_sent = $this->input->post('lotw_sent');
    } else {
        $lotw_sent = 'N';
    }

    if ($this->input->post('lotw_rcvd')) {
        $lotw_rcvd = $this->input->post('lotw_rcvd');
    } else {
        $lotw_rcvd = 'N';
    }

    if ($qsl_sent == 'N') {
        $qslsdate = null;
    } elseif (!$qso->COL_QSLSDATE || $qso->COL_QSL_SENT != $qsl_sent) {
        $qslsdate = date('Y-m-d H:i:s');
    } else {
        $qslsdate = $qso->COL_QSLSDATE;
    }

    if ($qsl_rcvd == 'N') {
        $qslrdate = null;
    } elseif (!$qso->COL_QSLRDATE || $qso->COL_QSL_RCVD != $qsl_rcvd) {
        $qslrdate = date('Y-m-d H:i:s');
    } else {
        $qslrdate = $qso->COL_QSLRDATE;
    }

    if ($eqsl_sent == 'N') {
        $eqslsdate = null;
    } elseif (!$qso->COL_EQSL_QSLSDATE || $qso->COL_EQSL_QSL_SENT != $eqsl_sent) {
        $eqslsdate = date('Y-m-d H:i:s');
    } else {
        $eqslsdate = $qso->COL_EQSL_QSLSDATE;
    }

    if ($eqsl_rcvd == 'N') {
        $eqslrdate = null;
    } elseif (!$qso->COL_EQSL_QSLRDATE || $qso->COL_EQSL_QSL_RCVD != $eqsl_rcvd) {
        $eqslrdate = date('Y-m-d H:i:s');
    } else {
        $eqslrdate = $qso->COL_EQSL_QSLRDATE;
    }

    if ($lotw_sent == 'N') {
        $lotwsdate = null;
    } elseif (!$qso->COL_LOTW_QSLSDATE || $qso->COL_LOTW_QSL_SENT != $lotw_sent) {
        $lotwsdate = date('Y-m-d H:i:s');
    } else {
        $lotwsdate = $qso->COL_LOTW_QSLSDATE;
    }

    if ($lotw_rcvd == 'N') {
        $lotwrdate = null;
    } elseif (!$qso->COL_LOTW_QSLRDATE || $qso->COL_LOTW_QSL_RCVD != $lotw_rcvd) {
        $lotwrdate = date('Y-m-d H:i:s');
    } else {
        $lotwrdate = $qso->COL_LOTW_QSLRDATE;
    }

    $data = array(
       'COL_TIME_ON' => $this->input->post('time_on'),
       'COL_TIME_OFF' => $this->input->post('time_off'),
       'COL_CALL' => strtoupper(trim($this->input->post('callsign'))),
       'COL_BAND' => $this->input->post('band'),
       'COL_BAND_RX' => $this->input->post('band_rx'),
       'COL_FREQ' => $this->parse_frequency($this->input->post('freq')),
       'COL_MODE' => $mode,
       'COL_SUBMODE' => $submode,
       'COL_RST_RCVD' => $this->input->post('rst_rcvd'),
       'COL_RST_SENT' => $this->input->post('rst_sent'),
       'COL_GRIDSQUARE' => strtoupper(trim($this->input->post('locator'))),
       'COL_VUCC_GRIDS' => strtoupper(trim($this->input->post('vucc_grids'))),
       'COL_DISTANCE' => $this->input->post('distance'),
       'COL_COMMENT' => $this->input->post('comment'),
       'COL_NAME' => $this->input->post('name'),
       'COL_COUNTRY' => $country,
       'COL_CONT' => $this->input->post('continent'),
       'COL_DXCC'=> $this->input->post('dxcc_id'),
       'COL_CQZ' => $this->input->post('cqz'),
       'COL_SAT_NAME' => $this->input->post('sat_name'),
       'COL_SAT_MODE' => $this->input->post('sat_mode'),
       'COL_NOTES' => $this->input->post('notes'),
       'COL_QSLSDATE' => $qslsdate,
       'COL_QSLRDATE' => $qslrdate,
       'COL_QSL_SENT' => $qsl_sent,
       'COL_QSL_RCVD' => $qsl_rcvd,
       'COL_QSL_SENT_VIA' => $this->input->post('qsl_sent_method'),
       'COL_QSL_RCVD_VIA' => $this->input->post('qsl_rcvd_method'),
       'COL_EQSL_QSLSDATE' => $eqslsdate,
       'COL_EQSL_QSLRDATE' => $eqslrdate,
       'COL_EQSL_QSL_SENT' => $this->input->post('eqsl_sent'),
       'COL_EQSL_QSL_RCVD' => $this->input->post('eqsl_rcvd'),
       'COL_QSLMSG' => $this->input->post('qslmsg'),
       'COL_LOTW_QSLSDATE' => $lotwsdate,
       'COL_LOTW_QSLRDATE' => $lotwrdate,
       'COL_LOTW_QSL_SENT' => $this->input->post('lotw_sent'),
       'COL_LOTW_QSL_RCVD' => $this->input->post('lotw_rcvd'),
       'COL_IOTA' => $this->input->post('iota_ref'),
       'COL_SOTA_REF' => $this->input->post('sota_ref'),
       'COL_WWFF_REF' => $this->input->post('wwff_ref'),
       'COL_POTA_REF' => $this->input->post('pota_ref'),
       'COL_TX_PWR' => $txpower,
       'COL_SIG' => $this->input->post('sig'),
       'COL_SIG_INFO' => $this->input->post('sig_info'),
       'COL_DARC_DOK' => strtoupper($this->input->post('darc_dok')),
       'COL_QTH' => $this->input->post('qth'),
       'COL_PROP_MODE' => $this->input->post('prop_mode'),
       'COL_FREQ_RX' => $this->parse_frequency($this->input->post('freq_display_rx')),
       'COL_STX_STRING' => strtoupper(trim($this->input->post('stx_string'))),
       'COL_SRX_STRING' => strtoupper(trim($this->input->post('srx_string'))),
       'COL_STX' => $stx_string,
       'COL_SRX' => $srx_string,
       'COL_CONTEST_ID' => $this->input->post('contest_name'),
       'COL_QSL_VIA' => $this->input->post('qsl_via_callsign'),
       'station_id' => $stationId,
       'COL_STATION_CALLSIGN' => $stationCallsign,
       'COL_OPERATOR' => $this->input->post('operator_callsign'),
       'COL_STATE' =>$this->input->post('usa_state'),
       'COL_CNTY' => $uscounty
    );

    if ($this->exists_hrdlog_code($data['station_id'])) {
        $data['COL_HRDLOG_QSO_UPLOAD_STATUS'] = 'M';
    }

    if ($this->exists_qrz_api_key($data['station_id'])) {
        $data['COL_QRZCOM_QSO_UPLOAD_STATUS'] = 'M';
    }

    $this->db->where('COL_PRIMARY_KEY', $this->input->post('id'));
    $this->db->update($this->config->item('table_name'), $data);

  }

  /* QSL received */
  function qsl_rcvd() {

    $data = array(
       'COL_QSLRDATE' => date('Y-m-d H:i:s'),
       'COL_QSL_RCVD' => "Y"
    );

    $this->db->where('COL_PRIMARY_KEY', $this->input->post('id'));
    $this->db->update($this->config->item('table_name'), $data);

  }

  /* Return last 10 QSOs */
  function last_ten() {
    $CI =& get_instance();
    $CI->load->model('logbooks_model');
    $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

    $this->db->select('COL_CALL, COL_BAND, COL_FREQ, COL_TIME_ON, COL_RST_RCVD, COL_RST_SENT, COL_MODE, COL_SUBMODE, COL_NAME, COL_COUNTRY, COL_PRIMARY_KEY, COL_SAT_NAME');
    $this->db->where_in('station_id', $logbooks_locations_array);
    $this->db->order_by("COL_TIME_ON", "desc");
    $this->db->limit(10);

    return $this->db->get($this->config->item('table_name'));
  }

  /* Show custom number of qsos */
  function last_custom($num) {
    $CI =& get_instance();
    $CI->load->model('logbooks_model');
    $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

    if(!empty($logbooks_locations_array)) {
      $this->db->select('COL_CALL, COL_BAND, COL_FREQ, COL_TIME_ON, COL_RST_RCVD, COL_RST_SENT, COL_MODE, COL_SUBMODE, COL_NAME, COL_COUNTRY, COL_DXCC, COL_PRIMARY_KEY, COL_SAT_NAME, COL_SRX, COL_SRX_STRING, COL_STX, COL_STX_STRING, COL_VUCC_GRIDS, COL_GRIDSQUARE, COL_MY_GRIDSQUARE, COL_OPERATOR, COL_IOTA, COL_WWFF_REF, COL_POTA_REF, COL_STATE, COL_CNTY, COL_DISTANCE, COL_SOTA_REF, COL_CONTEST_ID, dxcc_entities.end AS end');
      $this->db->join('dxcc_entities', $this->config->item('table_name').'.col_dxcc = dxcc_entities.adif', 'left outer');
      $this->db->where_in('station_id', $logbooks_locations_array);
      $this->db->order_by("COL_TIME_ON", "desc");
      $this->db->limit($num);

      return $this->db->get($this->config->item('table_name'));
    } else {
      return false;
    }
  }

  /*
  *
  * Function: call_lookup_result
  *
  * Usage: Callsign lookup data for the QSO panel and API/callsign_lookup
  *
  */
  function call_lookup_result($callsign) {
    $this->db->select('COL_CALL, COL_NAME, COL_QSL_VIA, COL_GRIDSQUARE, COL_QTH, COL_IOTA, COL_TIME_ON, COL_STATE, COL_CNTY');
    $this->db->where('COL_CALL', $callsign);
    $where = "COL_NAME != \"\"";

    $this->db->where($where);

    $this->db->order_by("COL_TIME_ON", "desc");
    $this->db->limit(1);
    $query = $this->db->get($this->config->item('table_name'));
    $name = "";
    if ($query->num_rows() > 0)
    {
      $data = $query->row();
    }

    return $data;
  }

  /* Callsign QRA */
	function call_qra($callsign) {
		$this->db->select('COL_CALL, COL_GRIDSQUARE, COL_TIME_ON');
		$this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
		$this->db->where('COL_CALL', $callsign);
		$this->db->where('station_profile.user_id', $this->session->userdata('user_id'));
		$where = "COL_GRIDSQUARE != \"\"";

		$this->db->where($where);

		$this->db->order_by("COL_TIME_ON", "desc");
		$this->db->limit(1);
		$query = $this->db->get($this->config->item('table_name'));
		$callsign = "";
		if ($query->num_rows() > 0)
		{
			$data = $query->row();
			$callsign = strtoupper($data->COL_GRIDSQUARE);
		}

		return $callsign;
	}

	function call_name($callsign) {
		$this->db->select('COL_CALL, COL_NAME, COL_TIME_ON');
		$this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
		$this->db->where('COL_CALL', $callsign);
		$this->db->where('station_profile.user_id', $this->session->userdata('user_id'));
		$where = "COL_NAME != \"\"";

		$this->db->where($where);

		$this->db->order_by("COL_TIME_ON", "desc");
		$this->db->limit(1);
		$query = $this->db->get($this->config->item('table_name'));
		$name = "";
		if ($query->num_rows() > 0)
		{
			$data = $query->row();
			$name = $data->COL_NAME;
		}

		return $name;
	}

	function call_qslvia($callsign) {
		$this->db->select('COL_CALL, COL_QSL_VIA, COL_TIME_ON');
		$this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
		$this->db->where('COL_CALL', $callsign);
		$this->db->where('station_profile.user_id', $this->session->userdata('user_id'));
		$where = "COL_QSL_VIA != \"\"";

		$this->db->where($where);

		$this->db->order_by("COL_TIME_ON", "desc");
		$this->db->limit(1);
		$query = $this->db->get($this->config->item('table_name'));
		$qsl_via = "";
		if ($query->num_rows() > 0)
		{
			$data = $query->row();
			$qsl_via = $data->COL_QSL_VIA;
		}

		return $qsl_via;
	}

    function call_state($callsign) {
        $this->db->select('COL_CALL, COL_STATE');
		$this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
        $this->db->where('COL_CALL', $callsign);
		$this->db->where('station_profile.user_id', $this->session->userdata('user_id'));
        $where = "COL_STATE != \"\"";

        $this->db->where($where);

        $this->db->order_by("COL_TIME_ON", "desc");
        $this->db->limit(1);
        $query = $this->db->get($this->config->item('table_name'));
		$qsl_state = "";
		if ($query->num_rows() > 0)
        {
            $data = $query->row();
            $qsl_state = $data->COL_STATE;
        }

        return $qsl_state;
    }

    function call_us_county($callsign) {
        $this->db->select('COL_CALL, COL_CNTY');
		$this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
        $this->db->where('COL_CALL', $callsign);
		$this->db->where('station_profile.user_id', $this->session->userdata('user_id'));
        $where = "COL_CNTY != \"\"";

        $this->db->where($where);

        $this->db->order_by("COL_TIME_ON", "desc");
        $this->db->limit(1);
        $query = $this->db->get($this->config->item('table_name'));
        if ($query->num_rows() > 0)
        {
            $data = $query->row();
            $qsl_county = $data->COL_CNTY;
            $qsl_county = substr($qsl_county, (strpos($qsl_county, ',')+1));
            return $qsl_county;
        } else {
			return NULL;
        }
    }

	function call_qth($callsign) {
		$this->db->select('COL_CALL, COL_QTH, COL_TIME_ON');
		$this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
		$this->db->where('COL_CALL', $callsign);
		$where = "COL_QTH != \"\"";

		$this->db->where($where);

		$this->db->order_by("COL_TIME_ON", "desc");
		$this->db->limit(1);
		$query = $this->db->get($this->config->item('table_name'));
		$name = "";
		if ($query->num_rows() > 0)
		{
			$data = $query->row();
			$name = $data->COL_QTH;
		}

		return $name;
	}

	function call_iota($callsign) {
		$this->db->select('COL_CALL, COL_IOTA, COL_TIME_ON');
		$this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
		$this->db->where('COL_CALL', $callsign);
		$where = "COL_IOTA != \"\"";

		$this->db->where($where);

		$this->db->order_by("COL_TIME_ON", "desc");
		$this->db->limit(1);
		$query = $this->db->get($this->config->item('table_name'));
		$name = "";
		if ($query->num_rows() > 0)
		{
			$data = $query->row();
			$name = $data->COL_IOTA;
		}

		return $name;
	}
  /* Return QSO Info */
	function qso_info($id) {
		if ($this->logbook_model->check_qso_is_accessible($id)) {
			$this->db->where('COL_PRIMARY_KEY', $id);

			return $this->db->get($this->config->item('table_name'));
		} else {
			return;
		}
	}


  // Set Paper to received
	function paperqsl_update($qso_id, $method) {
		if ($this->logbook_model->check_qso_is_accessible($qso_id)) {

			$data = array(
				'COL_QSLRDATE' => date('Y-m-d H:i:s'),
				'COL_QSL_RCVD' => 'Y',
				'COL_QSL_RCVD_VIA' => $method
			);

			$this->db->where('COL_PRIMARY_KEY', $qso_id);

			$this->db->update($this->config->item('table_name'), $data);
		} else {
			return;
		}
	}


  // Set Paper to sent
  function paperqsl_update_sent($qso_id, $method) {
	  if ($this->logbook_model->check_qso_is_accessible($qso_id)) {

		  $data = array(
			  'COL_QSLSDATE' => date('Y-m-d H:i:s'),
			  'COL_QSL_SENT' => 'Y',
			  'COL_QSL_SENT_VIA' => $method
		  );

		  $this->db->where('COL_PRIMARY_KEY', $qso_id);

		  $this->db->update($this->config->item('table_name'), $data);
	  } else {
		  return;
	  }
  }


  // Set Paper to requested
  function paperqsl_requested($qso_id, $method) {
	  if ($this->logbook_model->check_qso_is_accessible($qso_id)) {

		  $data = array(
			  'COL_QSLSDATE' => date('Y-m-d H:i:s'),
			  'COL_QSL_SENT' => 'R',
			  'COL_QSL_SENT_VIA' => $method
		  );

		  $this->db->where('COL_PRIMARY_KEY', $qso_id);

		  $this->db->update($this->config->item('table_name'), $data);
	  } else {
		  return;
	  }
  }


  function paperqsl_ignore($qso_id, $method) {
	  if ($this->logbook_model->check_qso_is_accessible($qso_id)) {

		  $data = array(
			  'COL_QSLSDATE' => date('Y-m-d H:i:s'),
			  'COL_QSL_SENT' => 'I'
		  );

		  $this->db->where('COL_PRIMARY_KEY', $qso_id);

		  $this->db->update($this->config->item('table_name'), $data);
	  } else {
		  return;
	  }
  }

  function get_qsos_for_printing($station_id2 = null) {

	$CI =& get_instance();
    $CI->load->model('stations');
    $station_id = $CI->stations->find_active();

    $sql = 'SELECT
				STATION_CALLSIGN,
				COL_PRIMARY_KEY,
				COL_CALL,
				COL_QSL_VIA,
				COL_TIME_ON,
				COL_MODE,
				COL_SUBMODE,
				COL_FREQ,
				UPPER(COL_BAND) as COL_BAND,
				COL_RST_SENT,
				COL_SAT_NAME,
				COL_SAT_MODE,
				COL_QSL_RCVD,
				COL_COMMENT,
				(select adif from dxcc_prefixes where  (CASE WHEN COL_QSL_VIA != \'\' THEN COL_QSL_VIA ELSE COL_CALL END) like concat(dxcc_prefixes.`call`,\'%\') order by end limit 1) as ADIF,
				(select entity from dxcc_prefixes where  (CASE WHEN COL_QSL_VIA != \'\' THEN COL_QSL_VIA ELSE COL_CALL END) like concat(dxcc_prefixes.`call`,\'%\') order by end limit 1) as ENTITY,
       			(CASE WHEN COL_QSL_VIA != \'\' THEN COL_QSL_VIA ELSE COL_CALL END) AS COL_ROUTING
			FROM '.$this->config->item('table_name').' thcv
				join station_profile on thcv.station_id = station_profile.station_id
			WHERE
				COL_QSL_SENT in (\'R\', \'Q\')';

    if ($station_id2 == NULL) {
    	$sql .= ' and thcv.station_id = ' . $station_id;
	} else if ($station_id2 != 'All') {
		$sql .= ' and thcv.station_id = ' . $station_id2;
	}

	// always filter user. this ensures that even if the station_id is from another user no inaccesible QSOs will be returned
	$sql .= ' and station_profile.user_id = ' . $this->session->userdata('user_id');

	$sql .= ' ORDER BY ADIF, COL_ROUTING';

    $query = $this->db->query($sql);
    return $query;
  }

  function get_qsos($num, $offset, $StationLocationsArray = null) {
    if($StationLocationsArray == null) {
      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
    } else {
      $logbooks_locations_array = $StationLocationsArray;
    }

    if (empty($logbooks_locations_array)) {
      return array();
    }

    $this->db->select($this->config->item('table_name').'.*, station_profile.*, dxcc_entities.*, lotw_users.callsign, lotw_users.lastupload');
    $this->db->from($this->config->item('table_name'));

    // remove anything thats duplicated based on COL_PRIMARY_KEY
    $this->db->distinct(''.$this->config->item('table_name').'.COL_PRIMARY_KEY');

    $this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
    $this->db->join('dxcc_entities', $this->config->item('table_name').'.col_dxcc = dxcc_entities.adif', 'left');
    $this->db->join('lotw_users', 'lotw_users.callsign = '.$this->config->item('table_name').'.col_call', 'left outer');
    $this->db->where_in('station_profile.station_id', $logbooks_locations_array);
    $this->db->order_by(''.$this->config->item('table_name').'.COL_TIME_ON', "desc");
    $this->db->order_by(''.$this->config->item('table_name').'.COL_PRIMARY_KEY', "desc");

    $this->db->limit($num);
    $this->db->offset($offset);

    return $this->db->get();
  }

  function get_qso($id, $trusted = false) {
	  if ($trusted || ($this->logbook_model->check_qso_is_accessible($id))) {
		  $this->db->select($this->config->item('table_name').'.*, station_profile.*, dxcc_entities.*, coalesce(dxcc_entities_2.name, "- NONE -") as station_country, dxcc_entities_2.end as station_end, eQSL_images.image_file as eqsl_image_file, lotw_users.callsign as lotwuser, lotw_users.lastupload');
		  $this->db->from($this->config->item('table_name'));
		  $this->db->join('dxcc_entities', $this->config->item('table_name').'.col_dxcc = dxcc_entities.adif', 'left');
		  $this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id', 'left');
		  $this->db->join('dxcc_entities as dxcc_entities_2', 'station_profile.station_dxcc = dxcc_entities_2.adif', 'left outer');
		  $this->db->join('eQSL_images', $this->config->item('table_name').'.COL_PRIMARY_KEY = eQSL_images.qso_id', 'left outer');
		  $this->db->join('lotw_users', $this->config->item('table_name').'.COL_CALL = lotw_users.callsign', 'left outer');
		  $this->db->where('COL_PRIMARY_KEY', $id);

		  return $this->db->get();
	  } else {
		  return;
	  }
  }

    /*
     * Function returns the QSOs from the logbook, which have not been either marked as uploaded to hrdlog, or has been modified with an edit
     */
    function get_hrdlog_qsos($station_id){
        $sql = 'select *, dxcc_entities.name as station_country from ' . $this->config->item('table_name') . ' thcv ' .
            ' left join station_profile on thcv.station_id = station_profile.station_id' .
            ' left outer join dxcc_entities on thcv.col_my_dxcc = dxcc_entities.adif' .
            ' where thcv.station_id = ' . $station_id .
            ' and (COL_HRDLOG_QSO_UPLOAD_STATUS is NULL
            or COL_HRDLOG_QSO_UPLOAD_STATUS = ""
            or COL_HRDLOG_QSO_UPLOAD_STATUS = "M"
            or COL_HRDLOG_QSO_UPLOAD_STATUS = "N")';

        $query = $this->db->query($sql);
        return $query;
    }

    /*
     * Function returns the QSOs from the logbook, which have not been either marked as uploaded to qrz, or has been modified with an edit
     */
  function get_qrz_qsos($station_id, $trusted = false){
	  $CI =& get_instance();
	  $CI->load->model('stations');
	  if ((!$trusted) && (!$CI->stations->check_station_is_accessible($station_id))) {
		  return;
	  }
	  $sql = 'select *, dxcc_entities.name as station_country from ' . $this->config->item('table_name') . ' thcv ' .
		  ' left join station_profile on thcv.station_id = station_profile.station_id' .
		  ' left outer join dxcc_entities on thcv.col_my_dxcc = dxcc_entities.adif' .
		  ' where thcv.station_id = ' . $station_id .
		  ' and (COL_QRZCOM_QSO_UPLOAD_STATUS is NULL
		  or COL_QRZCOM_QSO_UPLOAD_STATUS = ""
		  or COL_QRZCOM_QSO_UPLOAD_STATUS = "M"
		  or COL_QRZCOM_QSO_UPLOAD_STATUS = "N")';

	  $query = $this->db->query($sql);
	  return $query;
  }

	/*
     * Function returns the QSOs from the logbook, which have not been either marked as uploaded to webADIF
     */
    function get_webadif_qsos($station_id,$from = null, $to = null,$trusted = false){
	    $CI =& get_instance();
	    $CI->load->model('stations');
	    if ((!$trusted) && (!$CI->stations->check_station_is_accessible($station_id))) {
		    return;
	    }
	    $sql = "
			SELECT qsos.*, station_profile.*, dxcc_entities.name as station_country
			FROM %s qsos
			INNER JOIN station_profile ON qsos.station_id = station_profile.station_id
			LEFT JOIN dxcc_entities on qsos.col_my_dxcc = dxcc_entities.adif
			LEFT OUTER JOIN webadif ON qsos.COL_PRIMARY_KEY = webadif.qso_id
			WHERE qsos.station_id = %d
	AND qsos.COL_SAT_NAME = 'QO-100'
			  AND webadif.upload_date IS NULL
		";
	    $sql = sprintf(
		    $sql,
		    $this->config->item('table_name'),
		    $station_id
	    );
	    if ($from) {
		    $from = DateTime::createFromFormat('d/m/Y', $from);
		    $from = $from->format('Y-m-d');

		    $sql.="  AND qsos.COL_TIME_ON >= %s";
		    $sql=sprintf(
			    $sql,
			    $this->db->escape($from)
		    );
	    }
	    if ($to) {
		    $to = DateTime::createFromFormat('d/m/Y', $to);
		    $to = $to->format('Y-m-d');

		    $sql.="  AND qsos.COL_TIME_ON <= %s";
		    $sql=sprintf(
			    $sql,
			    $this->db->escape($to)
		    );
	    }

	    return $this->db->query($sql);
    }

    /*
     * Function returns all the station_id's with HRDLOG Code
     */
    function get_station_id_with_hrdlog_code() {
        $sql = 'select station_id, hrdlog_code from station_profile
            where coalesce(hrdlog_code, "") <> ""';

        $query = $this->db->query($sql);

        $result = $query->result();

        if ($result) {
            return $result;
        }
        else {
            return null;
        }
    }

    /*
     * Function returns all the station_id's with QRZ API Key's
     */
    function get_station_id_with_qrz_api() {
        $sql = 'select station_id, qrzapikey from station_profile
            where coalesce(qrzapikey, "") <> ""';

        $query = $this->db->query($sql);

        $result = $query->result();

        if ($result) {
            return $result;
        }
        else {
            return null;
        }
    }

	/*
     * Function returns all the station_id's with QRZ API Key's
     */
	function get_station_id_with_webadif_api() {
		$sql = "
			SELECT station_id, webadifapikey, webadifapiurl
			FROM station_profile
            WHERE COALESCE(webadifapikey, '') <> ''
              AND COALESCE(webadifapiurl, '') <> ''
		";

		$query = $this->db->query($sql);
		$result = $query->result();
		if ($result) {
			return $result;
		} else {
			return null;
		}
	}

  function get_last_qsos($num, $StationLocationsArray = null) {

    if($StationLocationsArray == null) {
      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
    } else {
      $logbooks_locations_array = $StationLocationsArray;
    }

    if ($logbooks_locations_array) {
      $location_list = "'".implode("','",$logbooks_locations_array)."'";

      $sql = "SELECT * FROM ( select * from " . $this->config->item('table_name'). "
        WHERE station_id IN(". $location_list .")
        order by col_time_on desc, col_primary_key desc
        limit " . $num .
        ") hrd
        JOIN station_profile ON station_profile.station_id = hrd.station_id
        LEFT JOIN dxcc_entities ON hrd.col_dxcc = dxcc_entities.adif
        order by col_time_on desc, col_primary_key desc";

      $query = $this->db->query($sql);

      return $query;
    } else {
      return null;
    }

  }

    function check_if_callsign_cnfmd_in_logbook($callsign, $StationLocationsArray = null, $band = null) {
	    $user_gridmap_confirmation = $this->session->userdata('user_gridmap_confirmation');

	    if($StationLocationsArray == null) {
		    $CI =& get_instance();
		    $CI->load->model('logbooks_model');
		    $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
	    } else {
		    $logbooks_locations_array = $StationLocationsArray;
	    }

	    $extrawhere='';
	    if (isset($user_gridmap_confirmation) && strpos($user_gridmap_confirmation, 'Q') !== false) { 
		    $extrawhere="COL_QSL_RCVD='Y'"; 
	    }
	    if (isset($user_gridmap_confirmation) && strpos($user_gridmap_confirmation, 'L') !== false) {
		    if ($extrawhere!='') {
			    $extrawhere.=" OR";
		    }
		    $extrawhere.=" COL_LOTW_QSL_RCVD='Y'";
	    }
	    if (isset($user_gridmap_confirmation) && strpos($user_gridmap_confirmation, 'E') !== false) {
		    if ($extrawhere!='') {
			    $extrawhere.=" OR";
		    }
		    $extrawhere.=" COL_EQSL_QSL_RCVD='Y'";
	    }


	    $this->db->select('COL_CALL');
	    $this->db->where_in('station_id', $logbooks_locations_array);
	    $this->db->where('COL_CALL', $callsign);

	    if($band != null && $band != 'SAT') {
		    $this->db->where('COL_BAND', $band);
	    } else if($band == 'SAT') {
		    // Where col_sat_name is not empty
		    $this->db->where('COL_SAT_NAME !=', '');
	    }
	    if ($extrawhere != '') {
		    $this->db->where('('.$extrawhere.')');
	    } else {
		    $this->db->where("1=0");
	    }
	    $this->db->limit('2');
	    $query = $this->db->get($this->config->item('table_name'));

	    return $query->num_rows();

    }

function check_if_callsign_worked_in_logbook($callsign, $StationLocationsArray = null, $band = null) {

    if($StationLocationsArray == null) {
      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
    } else {
      $logbooks_locations_array = $StationLocationsArray;
    }

    $this->db->select('COL_CALL');
    $this->db->where_in('station_id', $logbooks_locations_array);
    $this->db->where('COL_CALL', $callsign);

    if($band != null && $band != 'SAT') {
      $this->db->where('COL_BAND', $band);
    } else if($band == 'SAT') {
      // Where col_sat_name is not empty
      $this->db->where('COL_SAT_NAME !=', '');
    }
    $this->db->limit('2');
    $query = $this->db->get($this->config->item('table_name'));

    return $query->num_rows();

  }

  function check_if_grid_worked_in_logbook($grid, $StationLocationsArray = null, $band = null) {

    if($StationLocationsArray == null) {
      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
    } else {
      $logbooks_locations_array = $StationLocationsArray;
    }

    $this->db->select('COL_GRIDSQUARE');
    $this->db->where_in('station_id', $logbooks_locations_array);
    $this->db->like('COL_GRIDSQUARE', $grid);

    if($band != null && $band != 'SAT') {
      $this->db->where('COL_BAND', $band);
    } else if($band == 'SAT') {
      // Where col_sat_name is not empty
      $this->db->where('COL_SAT_NAME !=', '');
    }
    $this->db->limit('2');

    $query = $this->db->get($this->config->item('table_name'));

    return $query->num_rows();

  }

    /* Get all QSOs with a valid grid for use in the KML export */
    function kml_get_all_qsos($band, $mode, $dxcc, $cqz, $propagation, $fromdate, $todate) {
        $CI =& get_instance();
        $CI->load->model('logbooks_model');
        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

        $this->db->select('COL_CALL, COL_BAND, COL_TIME_ON, COL_RST_RCVD, COL_RST_SENT, COL_MODE, COL_SUBMODE, COL_NAME, COL_COUNTRY, COL_PRIMARY_KEY, COL_SAT_NAME, COL_GRIDSQUARE');
        $this->db->where_in('station_id', $logbooks_locations_array);
        $this->db->where("coalesce(COL_GRIDSQUARE, '') <> ''");

        if ($band != 'All') {
            if ($band == 'SAT') {
                $this->db->where('COL_PROP_MODE = \'' . $band . '\'');
            }
            else {
                $this->db->where('COL_PROP_MODE != \'SAT\'');
                $this->db->where('COL_BAND = \'' . $band .'\'');
            }
        }

        if ($mode != 'All') {
            $this->db->where('COL_MODE = \'' . $mode . '\'');
        }

        if ($dxcc != 'All') {
            $this->db->where('COL_DXCC = ' . $dxcc);
        }

        if ($cqz != 'All') {
            $this->db->where('COL_CQZ = ' . $cqz);
        }

        if ($propagation != 'All') {
            $this->db->where('COL_PROP_MODE = ' . $propagation);
        }

        // If date is set, we format the date and add it to the where-statement
        if ($fromdate != "") {
            $from = DateTime::createFromFormat('d/m/Y', $fromdate);
            $from = $from->format('Y-m-d');
            $this->db->where("date(".$this->config->item('table_name').".COL_TIME_ON) >= '".$from."'");
        }
        if ($todate != "") {
            $to = DateTime::createFromFormat('d/m/Y', $todate);
            $to = $to->format('Y-m-d');
            $this->db->where("date(".$this->config->item('table_name').".COL_TIME_ON) <= '".$to."'");
        }

        $query = $this->db->get($this->config->item('table_name'));

        return $query;
    }

    function totals_year() {

    $CI =& get_instance();
    $CI->load->model('logbooks_model');
    $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

    if (!$logbooks_locations_array) {
      return null;
    }

    $this->db->select('DATE_FORMAT(COL_TIME_ON, \'%Y\') as \'year\',COUNT(COL_PRIMARY_KEY) as \'total\'', FALSE);
    $this->db->where_in('station_id', $logbooks_locations_array);
    $this->db->group_by('DATE_FORMAT(COL_TIME_ON, \'%Y\')');
    $this->db->order_by('year', 'DESC');

    $query = $this->db->get($this->config->item('table_name'));

    return $query;
  }

    /* Return total number of qsos */
    function total_qsos($StationLocationsArray = null, $api_key = null) {
      if($StationLocationsArray == null) {
        $CI =& get_instance();
        $CI->load->model('logbooks_model');
        if ($api_key != null) {
          $CI->load->model('api_model');
          if (strpos($this->api_model->access($api_key), 'r') !== false) {
            $this->api_model->update_last_used($api_key);
            $user_id = $this->api_model->key_userid($api_key);
            $active_station_logbook = $CI->logbooks_model->find_active_station_logbook_from_userid($user_id);
            $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($active_station_logbook);
          } else {
            $logbooks_locations_array = [];
          }
        } else {
          $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
        }
      } else {
        $logbooks_locations_array = $StationLocationsArray;
      }

      if ($logbooks_locations_array) {
        $this->db->select('COUNT( * ) as count', FALSE);
        $this->db->where_in('station_id', $logbooks_locations_array);
        $query = $this->db->get($this->config->item('table_name'));

        if ($query->num_rows() > 0)
        {
          foreach ($query->result() as $row)
          {
            return $row->count;
          }
        }
      } else {
        return null;
      }
    }

    /* Return number of QSOs had today */
    function todays_qsos($StationLocationsArray = null, $api_key = null) {
      if($StationLocationsArray == null) {
        $CI =& get_instance();
        $CI->load->model('logbooks_model');
        if ($api_key != null) {
          $CI->load->model('api_model');
          if (strpos($this->api_model->access($api_key), 'r') !== false) {
            $this->api_model->update_last_used($api_key);
            $user_id = $this->api_model->key_userid($api_key);
            $active_station_logbook = $CI->logbooks_model->find_active_station_logbook_from_userid($user_id);
            $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($active_station_logbook);
          } else {
            $logbooks_locations_array = [];
          }
        } else {
          $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
        }
      } else {
        $logbooks_locations_array = $StationLocationsArray;
      }

      if ($logbooks_locations_array) {
        $morning = date('Y-m-d 00:00:00');
        $night = date('Y-m-d 23:59:59');

        $this->db->select('COUNT( * ) as count', FALSE);
        $this->db->where_in('station_id', $logbooks_locations_array);
        $this->db->where('COL_TIME_ON >=', $morning);
        $this->db->where('COL_TIME_ON <=', $night);
        $query = $this->db->get($this->config->item('table_name'));

        if ($query->num_rows() > 0)
        {
          foreach ($query->result() as $row)
          {
            return $row->count;
          }
        }
      } else {
        return null;
      }

    }

    /* Return QSOs over a period of days */
    function map_week_qsos($start, $end) {
        $CI =& get_instance();
        $CI->load->model('logbooks_model');
        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

        $this->db->where("COL_TIME_ON BETWEEN '".$start."' AND '".$end."'");
        $this->db->where_in('station_id', $logbooks_locations_array);
        $this->db->order_by("COL_TIME_ON", "ASC");
        $query = $this->db->get($this->config->item('table_name'));

        return $query;
    }

    /* used to return custom qsos requires start, end date plus a band */
    function map_custom_qsos($start, $end, $band, $mode, $propagation) {
		$CI =& get_instance();
		$CI->load->model('logbooks_model');
		$logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

    if (!$logbooks_locations_array) {
      return null;
    }

      $this->db->join('dxcc_entities', $this->config->item('table_name').'.col_dxcc = dxcc_entities.adif', 'left');
      $this->db->where("COL_TIME_ON BETWEEN '".$start."' AND '".$end."'");
      $this->db->where_in("station_id", $logbooks_locations_array);

      if($band != "All" && $band != "SAT") {
        $this->db->where("COL_BAND", $band);
      }

      if ($band == "SAT") {
        $this->db->where("COL_PROP_MODE", "SAT");
      }

      if ($mode != 'All') {
        $this->db->group_start();
        $this->db->where("COL_MODE", $mode);
        $this->db->or_where("COL_SUBMODE", $mode);
				$this->db->group_end();
      }

      if ($propagation != 'All') {
        $this->db->where("COL_PROP_MODE", $propagation);
      }

      $this->db->order_by("COL_TIME_ON", "ASC");
      $query = $this->db->get($this->config->item('table_name'));

      return $query;
  }

    /* Returns QSOs for the date sent eg 2011-09-30 */
    function map_day($date) {
        $CI =& get_instance();
        $CI->load->model('logbooks_model');
        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

        $start = $date." 00:00:00";
        $end = $date." 23:59:59";

        $this->db->where("COL_TIME_ON BETWEEN '".$start."' AND '".$end."'");
        $this->db->where_in('station_id', $logbooks_locations_array);
        $this->db->order_by("COL_TIME_ON", "ASC");
        $query = $this->db->get($this->config->item('table_name'));

        return $query;
    }

    // Return QSOs made during the current month
    function month_qsos($StationLocationsArray = null, $api_key = null) {
      if($StationLocationsArray == null) {
        $CI =& get_instance();
        $CI->load->model('logbooks_model');
        if ($api_key != null) {
          $CI->load->model('api_model');
          if (strpos($this->api_model->access($api_key), 'r') !== false) {
            $this->api_model->update_last_used($api_key);
            $user_id = $this->api_model->key_userid($api_key);
            $active_station_logbook = $CI->logbooks_model->find_active_station_logbook_from_userid($user_id);
            $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($active_station_logbook);
          } else {
            $logbooks_locations_array = [];
          }
        } else {
          $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
        }
      } else {
        $logbooks_locations_array = $StationLocationsArray;
      }

      if ($logbooks_locations_array) {

        $morning = date('Y-m-01 00:00:00');

        $date = new DateTime('now');
        $date->modify('last day of this month');

        $night = $date->format('Y-m-d')." 23:59:59";

        $this->db->select('COUNT( * ) as count', FALSE);
        $this->db->where_in('station_id', $logbooks_locations_array);
        $this->db->where('COL_TIME_ON >=', $morning);
        $this->db->where('COL_TIME_ON <=', $night);
        $query = $this->db->get($this->config->item('table_name'));

        if ($query->num_rows() > 0)
        {
            foreach ($query->result() as $row)
            {
                 return $row->count;
            }
        }
      } else {
        return null;
      }
    }

    /* Return QSOs for the year for the active profile */
    function map_all_qsos_for_active_station_profile() {
      $CI =& get_instance();
      $CI->load->model('stations');
      $station_id = $CI->stations->find_active();

      $this->db->where("station_id", $station_id);
      $this->db->order_by("COL_TIME_ON", "ASC");
      $query = $this->db->get($this->config->item('table_name'));

      return $query;
    }


    /* Return QSOs made during the current Year */
    function year_qsos($StationLocationsArray = null, $api_key = null) {

      if($StationLocationsArray == null) {
        $CI =& get_instance();
        $CI->load->model('logbooks_model');
        if ($api_key != null) {
          $CI->load->model('api_model');
          if (strpos($this->api_model->access($api_key), 'r') !== false) {
            $this->api_model->update_last_used($api_key);
            $user_id = $this->api_model->key_userid($api_key);
            $active_station_logbook = $CI->logbooks_model->find_active_station_logbook_from_userid($user_id);
            $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($active_station_logbook);
          } else {
             $logbooks_locations_array = [];
          }
        } else {
          $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
        }
      } else {
        $logbooks_locations_array = $StationLocationsArray;
      }

      if ($logbooks_locations_array) {

        $morning = date('Y-01-01 00:00:00');
        $night = date('Y-12-31 23:59:59');

        $this->db->select('COUNT( * ) as count', FALSE);
        $this->db->where_in('station_id', $logbooks_locations_array);
        $this->db->where('COL_TIME_ON >=', $morning);
        $this->db->where('COL_TIME_ON <=', $night);
        $query = $this->db->get($this->config->item('table_name'));

        if ($query->num_rows() > 0)
        {
            foreach ($query->result() as $row)
            {
                 return $row->count;
            }
        }
      } else {
        return null;
      }
    }

    /* Return total amount of SSB QSOs logged */
    function total_ssb() {

      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

      if (!$logbooks_locations_array) {
        return null;
      }
      $mode[] = 'SSB';
      $mode[] = 'LSB';
      $mode[] = 'USB';

      $this->db->select('COUNT( * ) as count', FALSE);
      $this->db->where_in('station_id', $logbooks_locations_array);
      $this->db->where_in('COL_MODE', $mode);

      $query = $this->db->get($this->config->item('table_name'));

        if ($query->num_rows() > 0)
        {
            foreach ($query->result() as $row)
            {
                 return $row->count;
            }
        }
    }

   /* Return total number of satellite QSOs */
   function total_sat() {

      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

      if (!$logbooks_locations_array) {
        return null;
      }

      $this->db->select('COL_SAT_NAME, COUNT( * ) as count', FALSE);
      $this->db->where_in('station_id', $logbooks_locations_array);
      $this->db->where('COL_SAT_NAME is not null');
      $this->db->where('COL_SAT_NAME !=', '');
      $this->db->order_by('count DESC');
      $this->db->group_by('COL_SAT_NAME');
      $query = $this->db->get($this->config->item('table_name'));

        return $query;
    }

   /* Return total number of QSOs per continent */
   function total_continents($searchCriteria) {

      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

      if (!$logbooks_locations_array) {
        return null;
      }

      $this->db->select('COL_CONT, COUNT( * ) as count', FALSE);
      $this->db->where_in('station_id', $logbooks_locations_array);
      $this->db->where('COL_CONT is not null');
      $this->db->where('COL_CONT !=', '');

      if ($searchCriteria['mode'] !== '') {
        $this->db->group_start();
        $this->db->where('COL_MODE', $searchCriteria['mode']);
        $this->db->or_where('COL_SUBMODE', $searchCriteria['mode']);
        $this->db->group_end();
      }

      if ($searchCriteria['band'] !== '') {
        if($searchCriteria['band'] != "SAT") {
          $this->db->where('COL_BAND', $searchCriteria['band']);
          $this->db->where('COL_PROP_MODE != "SAT"');
        } else {
          $this->db->where('COL_PROP_MODE', 'SAT');
        }
      }

      $this->db->order_by('count DESC');
      $this->db->group_by('COL_CONT');
      $query = $this->db->get($this->config->item('table_name'));

        return $query;
    }

    /* Return total number of CW QSOs */
    function total_cw() {

      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

      if (!$logbooks_locations_array) {
        return null;
      }

      $this->db->select('COUNT( * ) as count', FALSE);
      $this->db->where_in('station_id', $logbooks_locations_array);
      $this->db->where('COL_MODE', 'CW');
      $query = $this->db->get($this->config->item('table_name'));

        if ($query->num_rows() > 0)
        {
            foreach ($query->result() as $row)
            {
                 return $row->count;
            }
        }
    }

    /* Return total number of FM QSOs */
    function total_fm() {

      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

      if (!$logbooks_locations_array) {
        return null;
      }

      $this->db->select('COUNT( * ) as count', FALSE);
      $this->db->where_in('station_id', $logbooks_locations_array);
      $this->db->where('COL_MODE', 'FM');
      $query = $this->db->get($this->config->item('table_name'));

        if ($query->num_rows() > 0)
        {
            foreach ($query->result() as $row)
            {
                 return $row->count;
            }
        }
    }

    /* Return total number of Digital QSOs */
    function total_digi() {

      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

      if (!$logbooks_locations_array) {
        return null;
      }

      $this->db->select('COUNT( * ) as count', FALSE);
      $this->db->where_in('station_id', $logbooks_locations_array);
      $this->db->where('COL_MODE !=', 'SSB');
      $this->db->where('COL_MODE !=', 'LSB');
      $this->db->where('COL_MODE !=', 'USB');
      $this->db->where('COL_MODE !=', 'CW');
      $this->db->where('COL_MODE !=', 'FM');
      $this->db->where('COL_MODE !=', 'AM');

      $query = $this->db->get($this->config->item('table_name'));

        if ($query->num_rows() > 0)
        {
            foreach ($query->result() as $row)
            {
                 return $row->count;
            }
        }
    }

    /* Return the list of modes in the logbook */
    function get_modes(){
        $query = $this->db->query('select distinct(COL_MODE) from '.$this->config->item('table_name').' order by COL_MODE');
        return $query;
    }

    /* Return total number of QSOs per band */
   function total_bands() {
      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

      if (!$logbooks_locations_array) {
        return null;
      }

      $this->db->select('COL_BAND AS band, count( * ) AS count', FALSE);
      $this->db->where_in('station_id', $logbooks_locations_array);
      $this->db->group_by('band');
      $this->db->order_by('count', 'DESC');

      $query = $this->db->get($this->config->item('table_name'));

      return $query;
    }

    function get_QSLStats($StationLocationsArray = null) {

	    if($StationLocationsArray == null) {
		    $CI =& get_instance();
		    $CI->load->model('logbooks_model');
		    $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
	    } else {
		    $logbooks_locations_array = $StationLocationsArray;
	    }

	    if(!empty($logbooks_locations_array)) {
		    $this->db->select('
	  COUNT(IF(COL_QSL_SENT="Y",COL_QSL_SENT,null)) as QSL_Sent,
	  COUNT(IF(COL_QSL_RCVD="Y",COL_QSL_RCVD,null)) as QSL_Received,
	  COUNT(IF(COL_QSL_SENT IN("Q", "R") ,COL_QSL_SENT,null)) as QSL_Requested,
	  COUNT(IF(COL_EQSL_QSL_SENT="Y",COL_EQSL_QSL_SENT,null)) as eQSL_Sent,
	  COUNT(IF(COL_EQSL_QSL_RCVD="Y",COL_EQSL_QSL_RCVD,null)) as eQSL_Received,
	  COUNT(IF(COL_LOTW_QSL_SENT="Y",COL_LOTW_QSL_SENT,null)) as LoTW_Sent,
	  COUNT(IF(COL_LOTW_QSL_RCVD="Y",COL_LOTW_QSL_RCVD,null)) as LoTW_Received,
	  COUNT(IF(COL_QSL_SENT="Y" and DATE(COL_QSLSDATE)=DATE(SYSDATE()),COL_QSL_SENT,null)) as QSL_Sent_today,
	  COUNT(IF(COL_QSL_RCVD="Y" and DATE(COL_QSLRDATE)=DATE(SYSDATE()),COL_QSL_RCVD,null)) as QSL_Received_today,
	  COUNT(IF(COL_QSL_SENT IN("Q", "R") and DATE(COL_QSLSDATE)=DATE(SYSDATE()) ,COL_QSL_SENT,null)) as QSL_Requested_today,
	  COUNT(IF(COL_EQSL_QSL_SENT="Y" and DATE(COL_EQSL_QSLSDATE)=DATE(SYSDATE()),COL_EQSL_QSL_SENT,null)) as eQSL_Sent_today,
	  COUNT(IF(COL_EQSL_QSL_RCVD="Y" and DATE(COL_EQSL_QSLRDATE)=DATE(SYSDATE()),COL_EQSL_QSL_RCVD,null)) as eQSL_Received_today,
	  COUNT(IF(COL_LOTW_QSL_SENT="Y" and DATE(COL_LOTW_QSLSDATE)=DATE(SYSDATE()),COL_LOTW_QSL_SENT,null)) as LoTW_Sent_today,
	  COUNT(IF(COL_LOTW_QSL_RCVD="Y" and DATE(COL_LOTW_QSLRDATE)=DATE(SYSDATE()),COL_LOTW_QSL_RCVD,null)) as LoTW_Received_today
	');
	$this->db->where_in('station_id', $logbooks_locations_array);

	if ($query = $this->db->get($this->config->item('table_name'))) {
	  $this->db->last_query();
	    foreach ($query->result() as $row) {
		$QSLBreakdown['QSL_Sent'] = $row->QSL_Sent;
		    $QSLBreakdown['QSL_Received'] =  $row->QSL_Received;
		    $QSLBreakdown['QSL_Requested'] =  $row->QSL_Requested;
		    $QSLBreakdown['eQSL_Sent'] =  $row->eQSL_Sent;
		    $QSLBreakdown['eQSL_Received'] =  $row->eQSL_Received;
		    $QSLBreakdown['LoTW_Sent'] =  $row->LoTW_Sent;
		    $QSLBreakdown['LoTW_Received'] =  $row->LoTW_Received;
		    $QSLBreakdown['QSL_Sent_today'] = $row->QSL_Sent_today;
		    $QSLBreakdown['QSL_Received_today'] =  $row->QSL_Received_today;
		    $QSLBreakdown['QSL_Requested_today'] =  $row->QSL_Requested_today;
		    $QSLBreakdown['eQSL_Sent_today'] =  $row->eQSL_Sent_today;
		    $QSLBreakdown['eQSL_Received_today'] =  $row->eQSL_Received_today;
		    $QSLBreakdown['LoTW_Sent_today'] =  $row->LoTW_Sent_today;
		    $QSLBreakdown['LoTW_Received_today'] =  $row->LoTW_Received_today;
	    }

	    return $QSLBreakdown;
	} else {
	    $QSLBreakdown['QSL_Sent'] = 0;
	    $QSLBreakdown['QSL_Received'] =  0;
	    $QSLBreakdown['QSL_Requested'] =  0;
	    $QSLBreakdown['eQSL_Sent'] =  0;
	    $QSLBreakdown['eQSL_Received'] =  0;
	    $QSLBreakdown['LoTW_Sent'] =  0;
	    $QSLBreakdown['LoTW_Received'] = 0;
	    $QSLBreakdown['QSL_Sent_today'] = 0;
	    $QSLBreakdown['QSL_Received_today'] =  0;
	    $QSLBreakdown['QSL_Requested_today'] =  0;
	    $QSLBreakdown['eQSL_Sent_today'] =  0;
	    $QSLBreakdown['eQSL_Received_today'] =  0;
	    $QSLBreakdown['LoTW_Sent_today'] =  0;
	    $QSLBreakdown['LoTW_Received_today'] = 0;

	    return $QSLBreakdown;
	}
	 } else {
	    $QSLBreakdown['QSL_Sent'] = 0;
	    $QSLBreakdown['QSL_Received'] =  0;
	    $QSLBreakdown['QSL_Requested'] =  0;
	    $QSLBreakdown['eQSL_Sent'] =  0;
	    $QSLBreakdown['eQSL_Received'] =  0;
	    $QSLBreakdown['LoTW_Sent'] =  0;
	    $QSLBreakdown['LoTW_Received'] = 0;
	    $QSLBreakdown['QSL_Sent_today'] = 0;
	    $QSLBreakdown['QSL_Received_today'] =  0;
	    $QSLBreakdown['QSL_Requested_today'] =  0;
	    $QSLBreakdown['eQSL_Sent_today'] =  0;
	    $QSLBreakdown['eQSL_Received_today'] =  0;
	    $QSLBreakdown['LoTW_Sent_today'] =  0;
	    $QSLBreakdown['LoTW_Received_today'] = 0;

	    return $QSLBreakdown;
      }
    }

    /* Return total number of QSL Cards sent */
    function total_qsl_sent() {
      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

      if(!empty($logbooks_locations_array)) {
        $this->db->select('count(COL_QSL_SENT) AS count');
        $this->db->where_in('station_id', $logbooks_locations_array);
        $this->db->where('COL_QSL_SENT =', 'Y');

        $query = $this->db->get($this->config->item('table_name'));

        $row = $query->row();

        if($row == null) {
            return 0;
        } else {
            return $row->count;
        }
      } else {
        return 0;
      }
    }

    /* Return total number of QSL Cards requested for printing - that means "requested" or "queued" */
    function total_qsl_requested() {
      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

      if(!empty($logbooks_locations_array)) {
        $this->db->select('count(COL_QSL_SENT) AS count');
        $this->db->where_in('station_id', $logbooks_locations_array);
        $this->db->where_in('COL_QSL_SENT', array('Q', 'R'));

        $query = $this->db->get($this->config->item('table_name'));

        $row = $query->row();

        if($row == null) {
            return 0;
        } else {
            return $row->count;
        }
      } else {
        return 0;
      }
    }

    /* Return total number of QSL Cards received */
    function total_qsl_rcvd() {
      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

      if(!empty($logbooks_locations_array)) {
        $this->db->select('count(COL_QSL_RCVD) AS count');
        $this->db->where_in('station_id', $logbooks_locations_array);
        $this->db->where('COL_QSL_RCVD =', 'Y');

        $query = $this->db->get($this->config->item('table_name'));

        $row = $query->row();

        if($row == null) {
            return 0;
        } else {
            return $row->count;
        }
      } else {
        return 0;
      }
    }

    /* Return total number of eQSL Cards sent */
    function total_eqsl_sent() {
        $CI =& get_instance();
        $CI->load->model('logbooks_model');
        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

        if(!empty($logbooks_locations_array)) {
            $this->db->select('count(COL_EQSL_QSL_SENT) AS count');
            $this->db->where_in('station_id', $logbooks_locations_array);
            $this->db->where('COL_EQSL_QSL_SENT =', 'Y');

            $query = $this->db->get($this->config->item('table_name'));

            $row = $query->row();

            if($row == null) {
                return 0;
            } else {
                return $row->count;
            }
        } else {
            return 0;
        }
    }

    /* Return total number of eQSL Cards received */
    function total_eqsl_rcvd() {
        $CI =& get_instance();
        $CI->load->model('logbooks_model');
        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

        if(!empty($logbooks_locations_array)) {
            $this->db->select('count(COL_EQSL_QSL_RCVD) AS count');
            $this->db->where_in('station_id', $logbooks_locations_array);
            $this->db->where('COL_EQSL_QSL_RCVD =', 'Y');

            $query = $this->db->get($this->config->item('table_name'));

            $row = $query->row();

            if($row == null) {
                return 0;
            } else {
                return $row->count;
            }
        } else {
            return 0;
        }
    }

    /* Return total number of LoTW sent */
    function total_lotw_sent() {
        $CI =& get_instance();
        $CI->load->model('logbooks_model');
        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

        if(!empty($logbooks_locations_array)) {
            $this->db->select('count(COL_LOTW_QSL_SENT) AS count');
            $this->db->where_in('station_id', $logbooks_locations_array);
            $this->db->where('COL_LOTW_QSL_SENT =', 'Y');

            $query = $this->db->get($this->config->item('table_name'));

            $row = $query->row();

            if($row == null) {
                return 0;
            } else {
                return $row->count;
            }
        } else {
            return 0;
        }
    }

    /* Return total number of LoTW received */
    function total_lotw_rcvd() {
        $CI =& get_instance();
        $CI->load->model('logbooks_model');
        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

        if(!empty($logbooks_locations_array)) {
            $this->db->select('count(COL_LOTW_QSL_RCVD) AS count');
            $this->db->where_in('station_id', $logbooks_locations_array);
            $this->db->where('COL_LOTW_QSL_RCVD =', 'Y');

            $query = $this->db->get($this->config->item('table_name'));

            $row = $query->row();

            if($row == null) {
                return 0;
            } else {
                return $row->count;
            }
        } else {
            return 0;
        }
    }

    /* Return total number of countries worked */
    function total_countries() {
        $CI =& get_instance();
        $CI->load->model('logbooks_model');
        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

        if(!empty($logbooks_locations_array)) {
          $this->db->select('DISTINCT (COL_COUNTRY)');
          $this->db->where_in('station_id', $logbooks_locations_array);
          $this->db->where('COL_COUNTRY !=', 'Invalid');
          $this->db->where('COL_DXCC >', '0');
          $query = $this->db->get($this->config->item('table_name'));

          return $query->num_rows();
        } else {
          return 0;
        }
    }

    /* Return total number of countries worked */
    function total_countries_current($StationLocationsArray = null) {
      if($StationLocationsArray == null) {
        $CI =& get_instance();
        $CI->load->model('logbooks_model');
        $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
      } else {
        $logbooks_locations_array = $StationLocationsArray;
      }

        if(!empty($logbooks_locations_array)) {
          $this->db->select('DISTINCT ('.$this->config->item('table_name').'.COL_COUNTRY)');
          $this->db->join('dxcc_entities', 'dxcc_entities.adif = '.$this->config->item('table_name').'.col_dxcc');
          $this->db->where_in($this->config->item('table_name').'.station_id', $logbooks_locations_array);
          $this->db->where($this->config->item('table_name').'.COL_COUNTRY !=', 'Invalid');
          $this->db->where('dxcc_entities.end is null');
          $query = $this->db->get($this->config->item('table_name'));

          return $query->num_rows();
        } else {
          return 0;
        }
    }

        /* Return total number of countries confirmed with along with qsl types confirmed */
        function total_countries_confirmed($StationLocationsArray = null) {

          if($StationLocationsArray == null) {
            $CI =& get_instance();
            $CI->load->model('logbooks_model');
            $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
          } else {
            $logbooks_locations_array = $StationLocationsArray;
          }

          if(!empty($logbooks_locations_array)) {
            $this->db->select('COUNT(DISTINCT COL_COUNTRY) as Countries_Worked,
            COUNT(DISTINCT IF(COL_QSL_RCVD = "Y", COL_COUNTRY, NULL)) as Countries_Worked_QSL,
            COUNT(DISTINCT IF(COL_EQSL_QSL_RCVD = "Y", COL_COUNTRY, NULL)) as Countries_Worked_EQSL,
            COUNT(DISTINCT IF(COL_LOTW_QSL_RCVD = "Y", COL_COUNTRY, NULL)) as Countries_Worked_LOTW');
            $this->db->where_in('station_id', $logbooks_locations_array);
            $this->db->where('COL_COUNTRY !=', 'Invalid');
            $this->db->where('COL_DXCC >', '0');

            if ($query = $this->db->get($this->config->item('table_name')))
            {
                foreach ($query->result() as $row)
                {
                        $CountriesBreakdown['Countries_Worked'] = $row->Countries_Worked;
                        $CountriesBreakdown['Countries_Worked_QSL'] =  $row->Countries_Worked_QSL;
                        $CountriesBreakdown['Countries_Worked_EQSL'] =  $row->Countries_Worked_EQSL;
                        $CountriesBreakdown['Countries_Worked_LOTW'] =  $row->Countries_Worked_LOTW;
                }

                return $CountriesBreakdown;
            }
            else
            {
              $CountriesBreakdown['Countries_Worked'] = 0;
              $CountriesBreakdown['Countries_Worked_QSL'] = 0;
              $CountriesBreakdown['Countries_Worked_EQSL'] = 0;
              $CountriesBreakdown['Countries_Worked_LOTW'] = 0;
              return $CountriesBreakdown;
            }
          } else {
              $CountriesBreakdown['Countries_Worked'] = 0;
              $CountriesBreakdown['Countries_Worked_QSL'] = 0;
              $CountriesBreakdown['Countries_Worked_EQSL'] = 0;
              $CountriesBreakdown['Countries_Worked_LOTW'] = 0;
              return $CountriesBreakdown;
          }
        }

    /* Return total number of countries confirmed with paper QSL */
    function total_countries_confirmed_paper() {
      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

      if(!empty($logbooks_locations_array)) {
        $this->db->select('DISTINCT (COL_COUNTRY)');
        $this->db->where_in('station_id', $logbooks_locations_array);
        $this->db->where('COL_COUNTRY !=', 'Invalid');
        $this->db->where('COL_DXCC >', '0');
        $this->db->where('COL_QSL_RCVD =', 'Y');
        $query = $this->db->get($this->config->item('table_name'));

        return $query->num_rows();
      } else {
        return 0;
      }
    }

    /* Return total number of countries confirmed with eQSL */
    function total_countries_confirmed_eqsl() {
      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

      if(!empty($logbooks_locations_array)) {
        $this->db->select('DISTINCT (COL_COUNTRY)');
        $this->db->where_in('station_id', $logbooks_locations_array);
        $this->db->where('COL_COUNTRY !=', 'Invalid');
        $this->db->where('COL_DXCC >', '0');
        $this->db->where('COL_EQSL_QSL_RCVD =', 'Y');
        $query = $this->db->get($this->config->item('table_name'));

        return $query->num_rows();
      } else {
        return 0;
      }
    }

    /* Return total number of countries confirmed with LoTW */
    function total_countries_confirmed_lotw() {
      $CI =& get_instance();
      $CI->load->model('logbooks_model');
      $logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

      if(!empty($logbooks_locations_array)) {
        $this->db->select('DISTINCT (COL_COUNTRY)');
        $this->db->where_in('station_id', $logbooks_locations_array);
        $this->db->where('COL_COUNTRY !=', 'Invalid');
        $this->db->where('COL_DXCC >', '0');
        $this->db->where('COL_LOTW_QSL_RCVD =', 'Y');
        $query = $this->db->get($this->config->item('table_name'));

        return $query->num_rows();
      } else {
        return 0;
      }
    }

    /* Delete QSO based on the QSO ID */
  function delete($id) {
	  if ($this->check_qso_is_accessible($id)) {
		  $this->db->where('COL_PRIMARY_KEY', $id);
		  $this->db->delete($this->config->item('table_name'));
	  } else {
		  return;
	  }
  }

  /* Used to check if the qso is already in the database */
  function import_check($datetime, $callsign, $band, $mode, $station_callsign) {

    $this->db->select('COL_PRIMARY_KEY, COL_TIME_ON, COL_CALL, COL_BAND');
    $this->db->where('COL_TIME_ON >= DATE_ADD(DATE_FORMAT("'.$datetime.'", \'%Y-%m-%d %H:%i\' ), INTERVAL -15 MINUTE )');
    $this->db->where('COL_TIME_ON <= DATE_ADD(DATE_FORMAT("'.$datetime.'", \'%Y-%m-%d %H:%i\' ), INTERVAL 15 MINUTE )');
    $this->db->where('COL_CALL', $callsign);
    $this->db->where('COL_STATION_CALLSIGN', $station_callsign);
    $this->db->where('COL_BAND', $band);
    $this->db->where('COL_MODE', $mode);

    $query = $this->db->get($this->config->item('table_name'));

    if ($query->num_rows() > 0)
    {
      $ret = $query->row();
      return ["Found", $ret->COL_PRIMARY_KEY];
    } else {
      return ["No Match", 0];
    }
  }

  function lotw_update($datetime, $callsign, $band, $qsl_date, $qsl_status, $state, $qsl_gridsquare, $qsl_vucc_grids, $iota, $cnty, $cqz, $ituz, $station_callsign) {

	$data = array(
      'COL_LOTW_QSLRDATE' => $qsl_date,
      'COL_LOTW_QSL_RCVD' => $qsl_status,
      'COL_LOTW_QSL_SENT' => 'Y'
    );
	if($state != "") {
      $data['COL_STATE'] = $state;
	}
	if($iota != "") {
      $data['COL_IOTA'] = $iota;
	}

	if($cnty != "") {
      $data['COL_CNTY'] = $cnty;
	}

	if($cqz != "") {
      $data['COL_CQZ'] = $cqz;
	}

	if($ituz != "") {
      $data['COL_ITUZ'] = $ituz;
	}

	// Check if QRZ or ClubLog is already uploaded. If so, set qso to reupload to qrz.com (M) or clublog
	$qsql = "select COL_CLUBLOG_QSO_UPLOAD_STATUS as CL_STATE, COL_QRZCOM_QSO_UPLOAD_STATUS as QRZ_STATE from ".$this->config->item('table_name')." where COL_BAND=? and COL_CALL=? and COL_STATION_CALLSIGN=? and date_format(COL_TIME_ON, '%Y-%m-%d %H:%i') = ?";
	$query = $this->db->query($qsql, array($band, $callsign,$station_callsign,$datetime));
	$row = $query->row();
	if ($row->QRZ_STATE == 'Y') {
		$data['COL_QRZCOM_QSO_UPLOAD_STATUS'] = 'M';
	}
	if ($row->CL_STATE == 'Y') {
		$data['COL_CLUBLOG_QSO_UPLOAD_STATUS'] = 'M';
	}

    $this->db->where('date_format(COL_TIME_ON, \'%Y-%m-%d %H:%i\') = "'.$datetime.'"');
    $this->db->where('COL_CALL', $callsign);
    $this->db->where('COL_BAND', $band);
    $this->db->where('ifnull(COL_LOTW_QSL_RCVD,\'\') !=', $qsl_status); // Prevent QSO from beeing updated twice (or more)
    $this->db->where('COL_STATION_CALLSIGN', $station_callsign);

    $this->db->update($this->config->item('table_name'), $data);
	unset($data);

	if($qsl_gridsquare != "" || $qsl_vucc_grids != "") {
      $data = array(
        'COL_DISTANCE' => 0
      );
         $this->db->select('station_profile.station_gridsquare as station_gridsquare');
         $this->db->where('date_format(COL_TIME_ON, \'%Y-%m-%d %H:%i\') = "'.$datetime.'"');
         $this->db->where('COL_CALL', $callsign);
         $this->db->where('COL_BAND', $band);
         $this->db->join('station_profile', $this->config->item('table_name').'.station_id = station_profile.station_id', 'left outer');
         $this->db->limit(1);
         $query = $this->db->get($this->config->item('table_name'));
         $row = $query->row();
         $station_gridsquare = '';
         if (isset($row)) {
            $station_gridsquare = $row->station_gridsquare;
         }
         $this->load->library('Qra');
         if ($qsl_gridsquare != "") {
            $data['COL_GRIDSQUARE'] = $qsl_gridsquare;
            $data['COL_DISTANCE'] = $this->qra->distance($station_gridsquare, $qsl_gridsquare, 'K');
         } elseif ($qsl_vucc_grids != "") {
            $data['COL_VUCC_GRIDS'] = $qsl_vucc_grids;
            $data['COL_DISTANCE'] = $this->qra->distance($station_gridsquare, $qsl_vucc_grids, 'K');
      }

      $this->db->where('date_format(COL_TIME_ON, \'%Y-%m-%d %H:%i\') = "'.$datetime.'"');
      $this->db->where('COL_CALL', $callsign);
      $this->db->where('COL_BAND', $band);

      $this->db->update($this->config->item('table_name'), $data);
    }

    return "Updated";
  }

  function lotw_last_qsl_date($user_id) {
	  $sql="SELECT MAX(COALESCE(COL_LOTW_QSLRDATE, '1900-01-01 00:00:00')) MAXDATE
		    FROM ".$this->config->item('table_name')." INNER JOIN station_profile ON (".$this->config->item('table_name').".station_id = station_profile.station_id)
		    WHERE station_profile.user_id=".$user_id." and COL_LOTW_QSLRDATE is not null";
	  $query = $this->db->query($sql);
	  $row = $query->row();

	  if (isset($row)) {
		  return $row->MAXDATE;
	  }

	  return '1900-01-01 00:00:00.000';
  }

    /*
     * $skipDuplicate - used in ADIF import to skip duplicate checking when importing QSOs
     * $markLoTW - used in ADIF import to mark QSOs as exported to LoTW when importing QSOs
     * $dxccAdif - used in ADIF import to determine if DXCC From ADIF is used, or if Cloudlog should try to guess
     * $markQrz - used in ADIF import to mark QSOs as exported to QRZ Logbook when importing QSOs
     * $markHrd - used in ADIF import to mark QSOs as exported to HRDLog.net Logbook when importing QSOs
     * $skipexport - used in ADIF import to skip the realtime upload to QRZ Logbook when importing QSOs from ADIF
     */
	function import($record, $station_id = "0", $skipDuplicate = false, $markClublog = false, $markLotw = false, $dxccAdif = false, $markQrz = false, $markHrd = false,$skipexport = false, $operatorName = false, $apicall = false, $skipStationCheck = false) {
        // be sure that station belongs to user
        $CI =& get_instance();
        $CI->load->model('stations');
        if (!$CI->stations->check_station_is_accessible($station_id) && $apicall == false ) {
            return 'Station not accessible<br>';
        }

	$station_profile=$CI->stations->profile_clean($station_id);
	$station_profile_call=$station_profile->station_callsign;

	if (($station_id !=0 ) && (!(isset($record['station_callsign'])))) {
		$record['station_callsign']=$station_profile_call;
	}

        if ((!$skipStationCheck) && ($station_id != 0) && (strtoupper($record['station_callsign']) != strtoupper($station_profile_call))) {     // Check if station_call from import matches profile ONLY when submitting via GUI.
           return "Wrong station callsign <b>\"".htmlentities($record['station_callsign'])."\"</b> while importing QSO with ".$record['call']." for <b>".$station_profile_call."</b> : SKIPPED" .
              "<br>See the <a target=\"_blank\" href=\"https://github.com/magicbug/Cloudlog/wiki/ADIF-file-can't-be-imported\">Cloudlog Wiki</a> for hints about errors in ADIF files.";
        }

        $CI =& get_instance();
        $CI->load->library('frequency');
        $my_error = "";

        // Join date+time
        $time_on = date('Y-m-d', strtotime($record['qso_date'])) ." ".date('H:i:s', strtotime($record['time_on']));

        if (isset($record['time_off'])) {
            if (isset($record['date_off'])) {
                // date_off and time_off set
                $time_off = date('Y-m-d', strtotime($record['date_off'])) . ' ' . date('H:i:s', strtotime($record['time_off']));
            } elseif (strtotime($record['time_off']) < strtotime($record['time_on'])) {
                // date_off is not set, QSO ends next day
                $time_off = date('Y-m-d', strtotime($record['qso_date'] . ' + 1 day')) . ' ' . date('H:i:s', strtotime($record['time_off']));
            } else {
                // date_off is not set, QSO ends same day
                $time_off = date('Y-m-d', strtotime($record['qso_date'])) . ' ' . date('H:i:s', strtotime($record['time_off']));
            }
        } else {
            // date_off and time_off not set, QSO end == QSO start
            $time_off = $time_on;
        }

        // Store Freq
        // Check if 'freq' is defined in the import?
        if (isset($record['freq'])){ // record[freq] in MHz
          $freq = floatval($record['freq']) * 1E6; // store in Hz
        } else {
          $freq = 0;
        }

        // Check for RX Freq
        // Check if 'freq' is defined in the import?
        if (isset($record['freq_rx'])){ // record[freq] in MHz
          $freqRX = floatval($record['freq_rx']) * 1E6; // store in Hz
        } else {
          $freqRX = NULL;
        }

        // DXCC id
        if (isset($record['call'])){
          if ($dxccAdif != NULL) {
              if (isset($record['dxcc'])) {
                  $entity = $this->get_entity($record['dxcc']);
                  $dxcc = array($record['dxcc'], $entity['name']);
              } else {
                  $dxcc = $this->check_dxcc_table($record['call'], $time_off);
              }
          } else {
            $dxcc = $this->check_dxcc_table($record['call'], $time_off);
          }
      } else {
        $dxcc = NULL;
      }

        // Store or find country name
        // dxcc has higher priority to be consistent with qso create and edit
        if (isset($dxcc[1])) {
            $country = ucwords(strtolower($dxcc[1]), "- (/");
        } else if (isset($record['country'])) {
            $country = $record['country'];
        }

        // RST recevied
        if(isset($record['rst_rcvd'])) {
                $rst_rx = $record['rst_rcvd'];
        } else {
                $rst_rx = "59";
        }

        // RST Sent
        if(isset($record['rst_sent'])) {
                $rst_tx = $record['rst_sent'];
        } else {
                $rst_tx = "59";
        }

        // Store Band
        if(isset($record['band'])) {
                $band = strtolower($record['band']);
        } else {
            if (isset($record['freq'])){
              if($freq != "0") {
                $band = $CI->frequency->GetBand($freq);
              }
            }
        }

        if(isset($record['band_rx'])) {
                $band_rx = strtolower($record['band_rx']);
        } else {
                if (isset($record['freq_rx'])){
                  if($freq != "0") {
                    $band_rx = $CI->frequency->GetBand($freqRX);
                  }
                } else {
                  $band_rx = "";
                }
        }

        if(isset($record['cqz'])) {
          $cq_zone = $record['cqz'];
        } elseif(isset($dxcc[2])) {
          $cq_zone = $dxcc[2];
        } else {
          $cq_zone = NULL;
        }

        // Sanitise lat input to make sure its 11 chars
        if (isset($record['lat'])){
            $input_lat = mb_strimwidth($record['lat'], 0, 11);
        }else{
            $input_lat = NULL;
        }

        // Sanitise lon input to make sure its 11 chars
        if (isset($record['lon'])){
            $input_lon = mb_strimwidth($record['lon'], 0, 11);
        }else{
            $input_lon = NULL;
        }

        // Sanitise my_lat input to make sure its 11 chars
        if (isset($record['my_lat'])){
            $input_my_lat = mb_strimwidth($record['my_lat'], 0, 11);
        }else{
            $input_my_lat = NULL;
        }

        // Sanitise my_lon input to make sure its 11 chars
        if (isset($record['my_lon'])){
            $input_my_lon = mb_strimwidth($record['my_lon'], 0, 11);
        }else{
            $input_my_lon = NULL;
        }

        // Sanitise TX_POWER
        if (isset($record['tx_pwr'])){
            $tx_pwr = filter_var($record['tx_pwr'],FILTER_VALIDATE_FLOAT);
        }else{
            $tx_pwr = NULL;
        }

        // Sanitise RX Power
        if (isset($record['rx_pwr'])){
          // Check if RX_PWR is "K" which N1MM+ uses to indicate 1000W
          if($record['rx_pwr'] == "K") {
            $rx_pwr = 1000;
          } else {
            $rx_pwr = filter_var($record['rx_pwr'],FILTER_VALIDATE_FLOAT);
          }
        }else{
          $rx_pwr = NULL;
         }

        if (isset($record['a_index'])){
            $input_a_index = filter_var($record['a_index'],FILTER_SANITIZE_NUMBER_INT);
        } else {
            $input_a_index = NULL;
        }

        if (isset($record['age'])){
            $input_age = filter_var($record['age'],FILTER_SANITIZE_NUMBER_INT);
        } else {
            $input_age = NULL;
        }

        if (isset($record['ant_az'])){
            $input_ant_az = filter_var($record['ant_az'],FILTER_SANITIZE_NUMBER_INT);
        } else {
            $input_ant_az = NULL;
        }

        if (isset($record['ant_el'])){
            $input_ant_el = filter_var($record['ant_el'],FILTER_SANITIZE_NUMBER_INT);
        } else {
            $input_ant_el = NULL;
        }

        if (isset($record['ant_path'])){
            $input_ant_path = mb_strimwidth($record['ant_path'], 0, 1);
        } else {
            $input_ant_path = NULL;
        }

        /*
          Validate QSL Fields
         qslrdate, qslsdate
        */

        if (isset($record['qslrdate'])){
            if(validateADIFDate($record['qslrdate']) == true){
              $input_qslrdate = $record['qslrdate'];
            } else {
              $input_qslrdate = NULL;
              $my_error .= "Error QSO: Date: ".$time_on." Callsign: ".$record['call']." the qslrdate is invalid (YYYYMMDD): ".$record['qslrdate']."<br>";
            }
        } else {
            $input_qslrdate = NULL;
        }

        if (isset($record['qslsdate'])){
            if(validateADIFDate($record['qslsdate']) == true){
              $input_qslsdate = $record['qslsdate'];
            } else {
              $input_qslsdate = NULL;
              $my_error .= "Error QSO: Date: ".$time_on." Callsign: ".$record['call']." the qslsdate is invalid (YYYYMMDD): ".$record['qslsdate']."<br>";
            }
        } else {
            $input_qslsdate = NULL;
        }

        if (isset($record['qsl_rcvd'])){
            $input_qsl_rcvd = mb_strimwidth($record['qsl_rcvd'], 0, 1);
        } else {
            $input_qsl_rcvd = "N";
        }

        if (isset($record['qsl_rcvd_via'])){
            $input_qsl_rcvd_via = mb_strimwidth($record['qsl_rcvd_via'], 0, 1);
        } else {
            $input_qsl_rcvd_via = "";
        }

        if (isset($record['qsl_sent'])){
            $input_qsl_sent = mb_strimwidth($record['qsl_sent'], 0, 1);
        } else {
            $input_qsl_sent = "N";
        }

        if (isset($record['qsl_sent_via'])){
            $input_qsl_sent_via = mb_strimwidth($record['qsl_sent_via'], 0, 1);
        } else {
            $input_qsl_sent_via = "";
        }

	// Validate Clublog-Fields
	if (isset($record['clublog_qso_upload_status'])){
		$input_clublog_qsl_sent = mb_strimwidth($record['clublog_qso_upload_status'], 0, 1);
	} else if ($markClublog != NULL) {
		$input_clublog_qsl_sent = "Y";
	} else {
		$input_clublog_qsl_sent = NULL;
	}

	if (isset($record['clublog_qso_upload_date'])){
		if(validateADIFDate($record['clublog_qso_upload_date']) == true){
			$input_clublog_qslsdate = $record['clublog_qso_upload_date'];
		} else {
			$input_clublog_qslsdate = NULL;
			$my_error .= "Error QSO: Date: ".$time_on." Callsign: ".$record['call']." the clublog_qso_upload_date is invalid (YYYYMMDD): ".$record['clublog_qso_upload_date']."<br>";
		}
	} else {
		$input_clublog_qslsdate = NULL;
	}

        /*
          Validate LoTW Fields
        */
        if (isset($record['lotw_qsl_rcvd'])){
            $input_lotw_qsl_rcvd = mb_strimwidth($record['lotw_qsl_rcvd'], 0, 1);
        } else {
            $input_lotw_qsl_rcvd = NULL;
        }

        if (isset($record['lotw_qslrdate'])){
            if(validateADIFDate($record['lotw_qslrdate']) == true){
              $input_lotw_qslrdate = $record['lotw_qslrdate'];
            } else {
              $input_lotw_qslrdate = NULL;
              $my_error .= "Error QSO: Date: ".$time_on." Callsign: ".$record['call']." the lotw_qslrdate is invalid (YYYYMMDD): ".$record['lotw_qslrdate']."<br>";
            }
        } else {
            $input_lotw_qslrdate = NULL;
        }
	
	if (isset($record['lotw_qsl_sent'])){
            $input_lotw_qsl_sent = mb_strimwidth($record['lotw_qsl_sent'], 0, 1);
        } else if ($markLotw != NULL) {
            $input_lotw_qsl_sent = "Y";
        } else {
            $input_lotw_qsl_sent = NULL;
        }

        if (isset($record['lotw_qslsdate'])){
            if(validateADIFDate($record['lotw_qslsdate']) == true){
              $input_lotw_qslsdate = $record['lotw_qslsdate'];
            } else {
              $input_lotw_qslsdate = NULL;
              $my_error .= "Error QSO: Date: ".$time_on." Callsign: ".$record['call']." the lotw_qslsdate is invalid (YYYYMMDD): ".$record['lotw_qslsdate']."<br>";
            }
        } else if ($markLotw != NULL) {
            $input_lotw_qslsdate = $date = date("Y-m-d H:i:s", strtotime("now"));
        } else {
            $input_lotw_qslsdate = NULL;
        }

        if (isset($record['mode'])) {
            $input_mode = $record['mode'];
        } else {
            $input_mode = '';
        }

        $mode = $this->get_main_mode_if_submode($input_mode);
        if ($mode == null) {
            $submode = null;
        } else {
            $submode = $input_mode;
            $input_mode = $mode;
        }

        if (empty($submode)) {
            $input_submode = (!empty($record['submode'])) ? $record['submode'] : '';
        } else {
            $input_submode = $submode;
        }

        // Get active station_id from station profile if one hasn't been provided
        if($station_id == "" || $station_id == "0") {
          $CI =& get_instance();
          $CI->load->model('stations');
          $station_id = $CI->stations->find_active();
        }

        // Check if QSO is already in the database
        if ($skipDuplicate != NULL) {
            $skip = false;
        } else {
            if (isset($record['call'])){
                $this->db->where('COL_CALL', $record['call']);
            }
            $this->db->where('COL_TIME_ON', $time_on);
            $this->db->where('COL_BAND', $band);
            $this->db->where('COL_MODE', $input_mode);
            $this->db->where('station_id', $station_id);
            $check = $this->db->get($this->config->item('table_name'));

            // If dupe is not found, set variable to add QSO
            if ($check->num_rows() <= 0) {
                $skip = false;
            } else {
                $skip = true;
            }
        }

        if ($operatorName != false) {
			$operatorName = $this->session->userdata('user_callsign');
		} else {
			$operatorName = (!empty($record['operator'])) ? $record['operator'] : '';
		}

        // If user checked to mark QSOs as uploaded to QRZ or HRDLog Logbook, or else we try to find info in ADIF import.
        if ($markHrd != null) {
            $input_hrdlog_qso_upload_status = 'Y';
            $input_hrdlog_qso_upload_date = $date = date("Y-m-d H:i:s", strtotime("now"));
	} else {
            $input_hrdlog_qso_upload_date = (!empty($record['hrdlog_qso_upload_date'])) ? $record['hrdlog_qso_upload_date'] : null;
            $input_hrdlog_qso_upload_status = (!empty($record['hrdlog_qso_upload_status'])) ? $record['hrdlog_qso_upload_status'] : '';
	}

        if ($markQrz != null) {
            $input_qrzcom_qso_upload_status = 'Y';
            $input_qrzcom_qso_upload_date = $date = date("Y-m-d H:i:s", strtotime("now"));
        } else {
            $input_qrzcom_qso_upload_date = (!empty($record['qrzcom_qso_upload_date'])) ? $record['qrzcom_qso_upload_date'] : null;
            $input_qrzcom_qso_upload_status = (!empty($record['qrzcom_qso_upload_status'])) ? $record['qrzcom_qso_upload_status'] : '';
        }

        if (!$skip)
        {
            // Create array with QSO Data use ?:
            $data = array(
                'COL_A_INDEX' => $input_a_index,
                'COL_ADDRESS' => (!empty($record['address'])) ? $record['address'] : '',
                'COL_ADDRESS_INTL' => (!empty($record['address_intl'])) ? $record['address_intl'] : '',
                'COL_AGE' => $input_age,
                'COL_ANT_AZ' => $input_ant_az,
                'COL_ANT_EL' => $input_ant_el,
                'COL_ANT_PATH' => $input_ant_path,
                'COL_ARRL_SECT' => (!empty($record['arrl_sect'])) ? $record['arrl_sect'] : '',
                'COL_AWARD_GRANTED' => (!empty($record['award_granted'])) ? $record['award_granted'] : '',
                'COL_AWARD_SUMMITED' => (!empty($record['award_submitted'])) ? $record['award_submitted'] : '',
                'COL_BAND' => $band,
                'COL_BAND_RX' => $band_rx,
                'COL_BIOGRAPHY' => (!empty($record['biography'])) ? $record['biography'] : '',
                'COL_CALL' => (!empty($record['call'])) ? strtoupper($record['call']) : '',
                'COL_CHECK' => (!empty($record['check'])) ? $record['check'] : '',
                'COL_CLASS' => (!empty($record['class'])) ? $record['class'] : '',
                'COL_CLUBLOG_QSO_UPLOAD_DATE' => $input_clublog_qslsdate,
                'COL_CLUBLOG_QSO_UPLOAD_STATUS' => $input_clublog_qsl_sent,
                'COL_CNTY' => (!empty($record['cnty'])) ? $record['cnty'] : '',
                'COL_COMMENT' => (!empty($record['comment'])) ? $record['comment'] : '',
                'COL_COMMENT_INTL' => (!empty($record['comment_intl'])) ? $record['comment_intl'] : '',
                'COL_CONT' => (!empty($record['cont'])) ? $record['cont'] : '',
                'COL_CONTACTED_OP' => (!empty($record['contacted_op'])) ? $record['contacted_op'] : '',
                'COL_CONTEST_ID' => (!empty($record['contest_id'])) ? $record['contest_id'] : '',
                'COL_COUNTRY' => $country,
                'COL_COUNTRY_INTL' => (!empty($record['country_intl'])) ? $record['country_intl'] : '',
                'COL_CQZ' => $cq_zone,
                'COL_CREDIT_GRANTED' => (!empty($record['credit_granted'])) ? $record['credit_granted'] : '',
                'COL_CREDIT_SUBMITTED' => (!empty($record['credit_submitted'])) ? $record['credit_submitted'] : '',
                'COL_DARC_DOK' => (!empty($record['darc_dok'])) ? strtoupper($record['darc_dok']) : '',
                'COL_DISTANCE' => (!empty($record['distance'])) ? $record['distance'] : null,
                'COL_DXCC' => $dxcc[0],
                'COL_EMAIL' => (!empty($record['email'])) ? $record['email'] : '',
                'COL_EQ_CALL' => (!empty($record['eq_call'])) ? $record['eq_call'] : '',
                'COL_EQSL_QSL_RCVD' => (!empty($record['eqsl_qsl_rcvd'])) ? $record['eqsl_qsl_rcvd'] : null,
                'COL_EQSL_QSL_SENT' => (!empty($record['eqsl_qsl_sent'])) ? $record['eqsl_qsl_sent'] : null,
                'COL_EQSL_QSLRDATE' => (!empty($record['eqsl_qslrdate'])) ? $record['eqsl_qslrdate'] : null,
                'COL_EQSL_QSLSDATE' => (!empty($record['eqsl_qslsdate'])) ? $record['eqsl_qslsdate'] : null,
                'COL_EQSL_STATUS' => (!empty($record['eqsl_status'])) ? $record['eqsl_status'] : '',
                'COL_FISTS' => (!empty($record['fists'])) ? $record['fists'] : null,
                'COL_FISTS_CC' => (!empty($record['fists_cc'])) ? $record['fists_cc'] : null,
                'COL_FORCE_INIT' => (!empty($record['force_init'])) ? $record['force_init'] : null,
                'COL_FREQ' => $freq,
                'COL_FREQ_RX' => (!empty($record['freq_rx'])) ? $freqRX : null,
                'COL_GRIDSQUARE' => (!empty($record['gridsquare'])) ? $record['gridsquare'] : '',
                'COL_HEADING' => (!empty($record['heading'])) ? $record['heading'] : null,
                'COL_HRDLOG_QSO_UPLOAD_DATE' => (!empty($record['hrdlog_qso_upload_date'])) ? $record['hrdlog_qso_upload_date'] : null,
                'COL_HRDLOG_QSO_UPLOAD_STATUS' => (!empty($record['hrdlog_qso_upload_status'])) ? $record['hrdlog_qso_upload_status'] : '',
                'COL_IOTA' => (!empty($record['iota'])) ? $record['iota'] : '',
                'COL_ITUZ' => (!empty($record['ituz'])) ? $record['ituz'] : null,
                'COL_K_INDEX' => (!empty($record['k_index'])) ? $record['k_index'] : null,
                'COL_LAT' => $input_lat,
                'COL_LON' => $input_lon,
                'COL_LOTW_QSL_RCVD' => $input_lotw_qsl_rcvd,
                'COL_LOTW_QSL_SENT' => $input_lotw_qsl_sent,
                'COL_LOTW_QSLRDATE' => $input_lotw_qslrdate,
                'COL_LOTW_QSLSDATE' => $input_lotw_qslsdate,
                'COL_LOTW_STATUS' => (!empty($record['lotw_status'])) ? $record['lotw_status'] : '',
                'COL_MAX_BURSTS' => (!empty($record['max_bursts'])) ? $record['max_bursts'] : null,
                'COL_MODE' => $input_mode,
                'COL_MS_SHOWER' => (!empty($record['ms_shower'])) ? $record['ms_shower'] : '',
                'COL_MY_ANTENNA' => (!empty($record['my_antenna'])) ? $record['my_antenna'] : '',
                'COL_MY_ANTENNA_INTL' => (!empty($record['my_antenna_intl'])) ? $record['my_antenna_intl'] : '',
                'COL_MY_CITY' => (!empty($record['my_city'])) ? $record['my_city'] : '',
                'COL_MY_CITY_INTL' => (!empty($record['my_city_intl'])) ? $record['my_city_intl'] : '',
                'COL_MY_CNTY' => (!empty($record['my_cnty'])) ? $record['my_cnty'] : '',
                'COL_MY_COUNTRY' => (!empty($record['my_country'])) ? $record['my_country'] : '',
                'COL_MY_COUNTRY_INTL' => (!empty($record['my_country_intl'])) ? $record['my_country_intl'] : null,
                'COL_MY_CQ_ZONE' => (!empty($record['my_dxcc'])) ? $record['my_dxcc'] : null,
                'COL_MY_DXCC' => (!empty($record['my_dxcc'])) ? $record['my_dxcc'] : null,
                'COL_MY_FISTS' => (!empty($record['my_fists'])) ? $record['my_fists'] : null,
                'COL_MY_GRIDSQUARE' => (!empty($record['my_gridsquare'])) ? $record['my_gridsquare'] : '',
                'COL_MY_IOTA' => (!empty($record['my_iota'])) ? $record['my_iota'] : '',
                'COL_MY_IOTA_ISLAND_ID' => (!empty($record['my_iota_island_id'])) ? $record['my_iota_island_id'] : '',
                'COL_MY_ITU_ZONE' => (!empty($record['my_itu_zone'])) ? $record['my_itu_zone'] : null,
                'COL_MY_LAT' => $input_my_lat,
                'COL_MY_LON' => $input_my_lon,
                'COL_MY_NAME' => (!empty($record['my_name'])) ? $record['my_name'] : '',
                'COL_MY_NAME_INTL' => (!empty($record['my_name_intl'])) ? $record['my_name_intl'] : '',
                'COL_MY_POSTAL_CODE' => (!empty($record['my_postal_code'])) ? $record['my_postal_code'] : '',
                'COL_MY_POSTCODE_INTL' => (!empty($record['my_postcode_intl'])) ? $record['my_postcode_intl'] : '',
                'COL_MY_RIG' => (!empty($record['my_rig'])) ? $record['my_rig'] : '',
                'COL_MY_RIG_INTL' => (!empty($record['my_rig_intl'])) ? $record['my_rig_intl'] : '',
                'COL_MY_SIG' => (!empty($record['my_sig'])) ? $record['my_sig'] : '',
                'COL_MY_SIG_INFO' => (!empty($record['my_sig_info'])) ? $record['my_sig_info'] : '',
                'COL_MY_SIG_INFO_INTL' => (!empty($record['my_sig_info_intl'])) ? $record['my_sig_info_intl'] : '',
                'COL_MY_SIG_INTL' => (!empty($record['my_sig_intl'])) ? $record['my_sig_intl'] : '',
                'COL_MY_SOTA_REF' => (!empty($record['my_sota_ref'])) ? $record['my_sota_ref'] : '',
                'COL_MY_WWFF_REF' => (!empty($record['my_wwff_ref'])) ? $record['my_wwff_ref'] : '',
                'COL_MY_POTA_REF' => (!empty($record['my_pota_ref'])) ? $record['my_pota_ref'] : '',
                'COL_MY_STATE' => (!empty($record['my_state'])) ? $record['my_state'] : '',
                'COL_MY_STREET' =>  (!empty($record['my_street'])) ? $record['my_street'] : '',
                'COL_MY_STREET_INTL' => (!empty($record['my_street_intl'])) ? $record['my_street_intl'] : '',
                'COL_MY_USACA_COUNTIES' => (!empty($record['my_usaca_counties'])) ? $record['my_usaca_counties'] : '',
                'COL_MY_VUCC_GRIDS' => (!empty($record['my_vucc_grids'])) ? $record['my_vucc_grids'] : '',
                'COL_NAME' => (!empty($record['name'])) ? $record['name'] : '',
                'COL_NAME_INTL' => (!empty($record['name_intl'])) ? $record['name_intl']: '',
                'COL_NOTES' => (!empty($record['notes'])) ? $record['notes'] : '',
                'COL_NOTES_INTL' => (!empty($record['notes_intl'])) ? $record['notes_intl'] : '',
                'COL_NR_BURSTS' => (!empty($record['nr_bursts'])) ? $record['nr_bursts'] : null,
                'COL_NR_PINGS' => (!empty($record['nr_pings'])) ? $record['nr_pings'] : null,
                'COL_OPERATOR' => $operatorName,
                'COL_OWNER_CALLSIGN' => (!empty($record['owner_callsign'])) ? $record['owner_callsign'] : '',
                'COL_PFX' => (!empty($record['pfx'])) ? $record['pfx'] : '',
                'COL_PRECEDENCE' => (!empty($record['precedence'])) ? $record['precedence'] : '',
                'COL_PROP_MODE' => (!empty($record['prop_mode'])) ? $record['prop_mode'] : '',
                'COL_PUBLIC_KEY' => (!empty($record['public_key'])) ? $record['public_key'] : '',
                'COL_HRDLOG_QSO_UPLOAD_DATE' => $input_hrdlog_qso_upload_date,
                'COL_HRDLOG_QSO_UPLOAD_STATUS' => $input_hrdlog_qso_upload_status,
                'COL_QRZCOM_QSO_UPLOAD_DATE' => $input_qrzcom_qso_upload_date,
                'COL_QRZCOM_QSO_UPLOAD_STATUS' => $input_qrzcom_qso_upload_status,
                'COL_QSL_RCVD' => $input_qsl_rcvd,
                'COL_QSL_RCVD_VIA' => $input_qsl_rcvd_via,
                'COL_QSL_SENT' => $input_qsl_sent,
                'COL_QSL_SENT_VIA' => $input_qsl_sent_via,
                'COL_QSL_VIA' => (!empty($record['qsl_via'])) ? $record['qsl_via'] : '',
                'COL_QSLMSG' => (!empty($record['qslmsg'])) ? $record['qslmsg'] : '',
                'COL_QSLRDATE' => $input_qslrdate,
                'COL_QSLSDATE' => $input_qslsdate,
                'COL_QSO_COMPLETE' => (!empty($record['qso_complete'])) ? $record['qso_complete'] : '',
                'COL_QSO_DATE' => (!empty($record['qso_date'])) ? $record['qso_date'] : null,
                'COL_QSO_DATE_OFF' => (!empty($record['qso_date_off'])) ? $record['qso_date_off'] : null,
                'COL_QTH' => (!empty($record['qth'])) ? $record['qth'] : '',
                'COL_QTH_INTL' => (!empty($record['qth_intl'])) ? $record['qth_intl'] : '',
                'COL_REGION' => (!empty($record['region'])) ? $record['region'] : '',
                'COL_RIG' => (!empty($record['rig'])) ? $record['rig'] : '',
                'COL_RIG_INTL' => (!empty($record['rig_intl'])) ? $record['rig_intl'] : '',
                'COL_RST_RCVD' => $rst_rx,
                'COL_RST_SENT' => $rst_tx,
                'COL_RX_PWR' => $rx_pwr,
                'COL_SAT_MODE' => (!empty($record['sat_mode'])) ? $record['sat_mode'] : '',
                'COL_SAT_NAME' => (!empty($record['sat_name'])) ? $record['sat_name'] : '',
                'COL_SFI' => (!empty($record['sfi'])) ? $record['sfi'] : null,
                'COL_SIG' => (!empty($record['sig'])) ? $record['sig'] : '',
                'COL_SIG_INFO' => (!empty($record['sig_info'])) ? $record['sig_info'] : '',
                'COL_SIG_INFO_INTL' => (!empty($record['sig_info_intl'])) ? $record['sig_info_intl'] : '',
                'COL_SIG_INTL' => (!empty($record['sig_intl'])) ? $record['sig_intl'] : '',
                'COL_SILENT_KEY' => (!empty($record['silent_key'])) ? $record['silent_key'] : '',
                'COL_SKCC' => (!empty($record['skcc'])) ? $record['skcc'] : '',
                'COL_SOTA_REF' => (!empty($record['sota_ref'])) ? $record['sota_ref'] : '',
                'COL_WWFF_REF' => (!empty($record['wwff_ref'])) ? $record['wwff_ref'] : '',
                'COL_POTA_REF' => (!empty($record['pota_ref'])) ? $record['pota_ref'] : '',
                'COL_SRX' => (!empty($record['srx'])) ? (int)$record['srx'] : null,
                //convert to integer to make sure no invalid entries are imported
                'COL_SRX_STRING' => (!empty($record['srx_string'])) ? $record['srx_string'] : '',
                'COL_STATE' => (!empty($record['state'])) ? strtoupper($record['state']) : '',
                'COL_STATION_CALLSIGN' => (!empty($record['station_callsign'])) ? $record['station_callsign'] : '',
                //convert to integer to make sure no invalid entries are imported
                'COL_STX' => (!empty($record['stx'])) ? (int)$record['stx'] : null,
                'COL_STX_STRING' => (!empty($record['stx_string'])) ? $record['stx_string'] : '',
                'COL_SUBMODE' => $input_submode,
                'COL_SWL' => (!empty($record['swl'])) ? $record['swl'] : null,
                'COL_TEN_TEN' => (!empty($record['ten_ten'])) ? $record['ten_ten'] : null,
                'COL_TIME_ON' => $time_on,
                'COL_TIME_OFF' => $time_off,
                'COL_TX_PWR' => (!empty($tx_pwr)) ? $tx_pwr : null,
                'COL_UKSMG' => (!empty($record['uksmg'])) ? $record['uksmg'] : '',
                'COL_USACA_COUNTIES' => (!empty($record['usaca_counties'])) ? $record['usaca_counties'] : '',
                'COL_VUCC_GRIDS' =>((!empty($record['vucc_grids']))) ? $record['vucc_grids'] : '',
                'COL_WEB' => (!empty($record['web'])) ? $record['web'] : ''
            );

            // Collect field information from the station profile table thats required for the QSO.
            if($station_id != "0") {
              $this->db->select('station_profile.*, dxcc_entities.name as station_country');
              $this->db->where('station_id', $station_id);
              $this->db->join('dxcc_entities', 'station_profile.station_dxcc = dxcc_entities.adif', 'left outer');
              $station_result = $this->db->get('station_profile');

                if ($station_result->num_rows() > 0){
                    $data['station_id'] = $station_id;

                    $row = $station_result->row_array();

                    if (strpos(trim($row['station_gridsquare']), ',') !== false) {
                      $data['COL_MY_VUCC_GRIDS'] = strtoupper(trim($row['station_gridsquare']));
                    } else {
                      $data['COL_MY_GRIDSQUARE'] = strtoupper(trim($row['station_gridsquare']));
                    }

                    $data['COL_MY_CITY'] = trim($row['station_city']);
                    $data['COL_MY_IOTA'] = strtoupper(trim($row['station_iota']));
                    $data['COL_MY_SOTA_REF'] = strtoupper(trim($row['station_sota']));
                    $data['COL_MY_WWFF_REF'] = strtoupper(trim($row['station_wwff']));
                    $data['COL_MY_POTA_REF'] = $row['station_pota'] == null ? '' : strtoupper(trim($row['station_pota']));

                    $data['COL_STATION_CALLSIGN'] = strtoupper(trim($row['station_callsign']));
                    $data['COL_MY_DXCC'] = strtoupper(trim($row['station_dxcc']));
                    $data['COL_MY_COUNTRY'] = strtoupper(trim($row['station_country']));
                    $data['COL_MY_CNTY'] = strtoupper(trim($row['station_cnty']));
                    $data['COL_MY_CQ_ZONE'] = strtoupper(trim($row['station_cq']));
                    $data['COL_MY_ITU_ZONE'] = strtoupper(trim($row['station_itu']));
                }
            }

            // Save QSO
            $this->add_qso($data, $skipexport);
        } else {
          $my_error .= "Date/Time: ".$time_on." Callsign: ".$record['call']." Band: ".$band."  Duplicate<br>";
        }

        return $my_error;
    }

    function get_main_mode_from_mode($mode) {
	return ($this->get_main_mode_if_submode($mode) == null ? $mode : $this->get_main_mode_if_submode($mode));
    }

    function get_main_mode_if_submode($mode) {
		$this->db->select('mode');
        $this->db->where('submode', $mode);

        $query = $this->db->get('adif_modes');
        if ($query->num_rows() > 0){
            $row = $query->row_array();
            return $row['mode'];
        } else {
            return null;
        }
	}

    /*
     * Check the dxxc_prefixes table and return (dxcc, country)
     */
    public function check_dxcc_table($call, $date){

    $csadditions = '/^P$|^R$|^A$|^M$/';

		$dxcc_exceptions = $this->db->select('`entity`, `adif`, `cqz`, `cont`')
             ->where('call', $call)
             ->where('(start <= ', $date)
             ->or_where('start is null)', NULL, false)
             ->where('(end >= ', $date)
             ->or_where('end is null)', NULL, false)
             ->get('dxcc_exceptions');

		if ($dxcc_exceptions->num_rows() > 0){
			$row = $dxcc_exceptions->row_array();
			return array($row['adif'], $row['entity'], $row['cqz'], $row['cont']);
		}
    if (preg_match('/(^KG4)[A-Z09]{3}/', $call)) {      // KG4/ and KG4 5 char calls are Guantanamo Bay. If 4 or 6 char, it is USA
      $call = "K";
    } elseif (preg_match('/(^OH\/)|(\/OH[1-9]?$)/', $call)) {   # non-Aland prefix!
      $call = "OH";                                             # make callsign OH = finland
    } elseif (preg_match('/(^CX\/)|(\/CX[1-9]?$)/', $call)) {   # non-Antarctica prefix!
      $call = "CX";                                             # make callsign CX = Uruguay
    } elseif (preg_match('/(^3D2R)|(^3D2.+\/R)/', $call)) {     # seems to be from Rotuma
      $call = "3D2/R";                                          # will match with Rotuma
    } elseif (preg_match('/^3D2C/', $call)) {                   # seems to be from Conway Reef
      $call = "3D2/C";                                          # will match with Conway
    } elseif (preg_match('/(^LZ\/)|(\/LZ[1-9]?$)/', $call)) {   # LZ/ is LZ0 by DXCC but this is VP8h
      $call = "LZ";
    } elseif (preg_match('/(^KG4)[A-Z09]{2}/', $call)) {
      $call = "KG4";
    } elseif (preg_match('/(^KG4)[A-Z09]{1}/', $call)) {
      $call = "K";
		} elseif (preg_match('/\w\/\w/', $call)) {
      if (preg_match_all('/^((\d|[A-Z])+\/)?((\d|[A-Z]){3,})(\/(\d|[A-Z])+)?(\/(\d|[A-Z])+)?$/', $call, $matches)) {
        $prefix = $matches[1][0];
        $callsign = $matches[3][0];
        $suffix = $matches[5][0];
      if ($prefix) {
          $prefix = substr($prefix, 0, -1); # Remove the / at the end
      }
      if ($suffix) {
          $suffix = substr($suffix, 1); # Remove the / at the beginning
      };
      if (preg_match($csadditions, $suffix)) {
        if ($prefix) {
          $call = $prefix;
        } else {
          $call = $callsign;
        }
      } else {
        $result = $this->wpx($call, 1);                       # use the wpx prefix instead
        if ($result == '') {
          $row['adif'] = 0;
          $row['entity'] = '- NONE -';
          $row['cqz'] = 0;
          $row['cont'] = '';
          return array($row['adif'], $row['entity'], $row['cqz'], $row['cont']);
        } else {
          $call = $result . "AA";
        }
      }
    }
  }

		$len = strlen($call);

		// query the table, removing a character from the right until a match
		for ($i = $len; $i > 0; $i--){
            //printf("searching for %s\n", substr($call, 0, $i));
            $dxcc_result = $this->db->select('`call`, `entity`, `adif`, `cqz`, `cont`')
                                    ->where('call', substr($call, 0, $i))
                                    ->where('(start <= ', $date)
                                    ->or_where("start is null)", NULL, false)
                                    ->where('(end >= ', $date)
                                    ->or_where("end is null)", NULL, false)
                                    ->get('dxcc_prefixes');

            //$dxcc_result = $this->db->query("select `call`, `entity`, `adif` from dxcc_prefixes where `call` = '".substr($call, 0, $i) ."'");
            //print $this->db->last_query();

            if ($dxcc_result->num_rows() > 0){
                $row = $dxcc_result->row_array();
                return array($row['adif'], $row['entity'], $row['cqz'], $row['cont']);
            }
        }

        return array("Not Found", "Not Found");

  }

    public function dxcc_lookup($call, $date){

    $csadditions = '/^P$|^R$|^A$|^M$/';

		$dxcc_exceptions = $this->db->select('`entity`, `adif`, `cqz`')
				->where('call', $call)
				->where('(start <= ', $date)
				->or_where('start is null)', NULL, false)
				->where('(end >= ', $date)
				->or_where('end is null)', NULL, false)
				->get('dxcc_exceptions');

			if ($dxcc_exceptions->num_rows() > 0){
				$row = $dxcc_exceptions->row_array();
				return $row;
			} else {

        if (preg_match('/(^KG4)[A-Z09]{3}/', $call)) {       // KG4/ and KG4 5 char calls are Guantanamo Bay. If 4 or 6 char, it is USA
          $call = "K";
        } elseif (preg_match('/(^OH\/)|(\/OH[1-9]?$)/', $call)) {   # non-Aland prefix!
          $call = "OH";                                             # make callsign OH = finland
        } elseif (preg_match('/(^CX\/)|(\/CX[1-9]?$)/', $call)) {   # non-Antarctica prefix!
          $call = "CX";                                             # make callsign CX = Uruguay
        } elseif (preg_match('/(^3D2R)|(^3D2.+\/R)/', $call)) {     # seems to be from Rotuma
          $call = "3D2/R";                                          # will match with Rotuma
        } elseif (preg_match('/^3D2C/', $call)) {                   # seems to be from Conway Reef
          $call = "3D2/C";                                          # will match with Conway
        } elseif (preg_match('/(^LZ\/)|(\/LZ[1-9]?$)/', $call)) {   # LZ/ is LZ0 by DXCC but this is VP8h
          $call = "LZ";
        } elseif (preg_match('/(^KG4)[A-Z09]{2}/', $call)) {
          $call = "KG4";
        } elseif (preg_match('/(^KG4)[A-Z09]{1}/', $call)) {
          $call = "K";
        } elseif (preg_match('/\w\/\w/', $call)) {
          if (preg_match_all('/^((\d|[A-Z])+\/)?((\d|[A-Z]){3,})(\/(\d|[A-Z])+)?(\/(\d|[A-Z])+)?$/', $call, $matches)) {
              $prefix = $matches[1][0];
              $callsign = $matches[3][0];
              $suffix = $matches[5][0];
            if ($prefix) {
                $prefix = substr($prefix, 0, -1); # Remove the / at the end
            }
            if ($suffix) {
                $suffix = substr($suffix, 1); # Remove the / at the beginning
            };
            if (preg_match($csadditions, $suffix)) {
              if ($prefix) {
                $call = $prefix;
              } else {
                $call = $callsign;
              }
            } else {
              $result = $this->wpx($call, 1);                       # use the wpx prefix instead
              if ($result == '') {
                $row['adif'] = 0;
                $row['entity'] = '- NONE -';
                $row['cqz'] = 0;
                $row['long'] = '0';
                $row['lat'] = '0';
                return $row;
              } else {
                $call = $result . "AA";
              }
          }
    		}
      }

				$len = strlen($call);

				// query the table, removing a character from the right until a match
				for ($i = $len; $i > 0; $i--){
					//printf("searching for %s\n", substr($call, 0, $i));
					$dxcc_result = $this->db->select('*')
            ->where('call', substr($call, 0, $i))
            ->where('(start <= ', $date)
            ->or_where("start is null)", NULL, false)
            ->where('(end >= ', $date)
            ->or_where("end is null)", NULL, false)
            ->get('dxcc_prefixes');

					//$dxcc_result = $this->db->query("select `call`, `entity`, `adif` from dxcc_prefixes where `call` = '".substr($call, 0, $i) ."'");
					//print $this->db->last_query();

					if ($dxcc_result->num_rows() > 0){
					  $row = $dxcc_result->row_array();
					  return $row;
					}
				}
			}

        return array("Not Found", "Not Found");
    }

    function wpx($testcall, $i) {
      $prefix = '';
      $a = '';
      $b = '';
      $c = '';

      $lidadditions = '/^QRP$|^LGT$/';
      $csadditions = '/^P$|^R$|^A$|^M$|^LH$/';
      $noneadditions = '/^MM$|^AM$/';

      # First check if the call is in the proper format, A/B/C where A and C
      # are optional (prefix of guest country and P, MM, AM etc) and B is the
      # callsign. Only letters, figures and "/" is accepted, no further check if the
      # callsign "makes sense".
      # 23.Apr.06: Added another "/X" to the regex, for calls like RV0AL/0/P
      # as used by RDA-DXpeditions....

      if (preg_match_all('/^((\d|[A-Z])+\/)?((\d|[A-Z]){3,})(\/(\d|[A-Z])+)?(\/(\d|[A-Z])+)?$/', $testcall, $matches)) {

          # Now $1 holds A (incl /), $3 holds the callsign B and $5 has C
          # We save them to $a, $b and $c respectively to ensure they won't get
          # lost in further Regex evaluations.
          $a = $matches[1][0];
          $b = $matches[3][0];
          $c = $matches[5][0];

          if ($a) {
              $a = substr($a, 0, -1); # Remove the / at the end
          }
          if ($c) {
              $c = substr($c, 1); # Remove the / at the beginning
          };

          # In some cases when there is no part A but B and C, and C is longer than 2
          # letters, it happens that $a and $b get the values that $b and $c should
          # have. This often happens with liddish callsign-additions like /QRP and
          # /LGT, but also with calls like DJ1YFK/KP5. ~/.yfklog has a line called
          # "lidadditions", which has QRP and LGT as defaults. This sorts out half of
          # the problem, but not calls like DJ1YFK/KH5. This is tested in a second
          # try: $a looks like a call (.\d[A-Z]) and $b doesn't (.\d), they are
          # swapped. This still does not properly handle calls like DJ1YFK/KH7K where
          # only the OP's experience says that it's DJ1YFK on KH7K.
          if (!$c && $a && $b) {                          # $a and $b exist, no $c
              if (preg_match($lidadditions, $b)) {        # check if $b is a lid-addition
                  $b = $a;
                  $a = null;                              # $a goes to $b, delete lid-add
              } elseif ((preg_match('/\d[A-Z]+$/', $a)) && (preg_match('/\d$/', $b))) {   # check for call in $a
                  $temp = $b;
                  $b = $a;
                  $a = $temp;
              }
          }

          # *** Added later ***  The check didn't make sure that the callsign
          # contains a letter. there are letter-only callsigns like RAEM, but not
          # figure-only calls.

          if (preg_match('/^[0-9]+$/', $b)) {            # Callsign only consists of numbers. Bad!
              return null;            # exit, undef
          }

          # Depending on these values we have to determine the prefix.
          # Following cases are possible:
          #
          # 1.    $a and $c undef --> only callsign, subcases
          # 1.1   $b contains a number -> everything from start to number
          # 1.2   $b contains no number -> first two letters plus 0
          # 2.    $a undef, subcases:
          # 2.1   $c is only a number -> $a with changed number
          # 2.2   $c is /P,/M,/MM,/AM -> 1.
          # 2.3   $c is something else and will be interpreted as a Prefix
          # 3.    $a is defined, will be taken as PFX, regardless of $c

          if (($a == null) && ($c == null)) {                     # Case 1
              if (preg_match('/\d/', $b)) {                       # Case 1.1, contains number
                  preg_match('/(.+\d)[A-Z]*/', $b, $matches);     # Prefix is all but the last
                  $prefix = $matches[1];                          # Letters
              } else {                                            # Case 1.2, no number
                  $prefix = substr($b, 0, 2) . "0";               # first two + 0
              }
          } elseif (($a == null) && (isset($c))) {                # Case 2, CALL/X
              if (preg_match('/^(\d)/', $c)) {                    # Case 2.1, number
                  preg_match('/(.+\d)[A-Z]*/', $b, $matches);     # regular Prefix in $1
                  # Here we need to find out how many digits there are in the
                  # prefix, because for example A45XR/0 is A40. If there are 2
                  # numbers, the first is not deleted. If course in exotic cases
                  # like N66A/7 -> N7 this brings the wrong result of N67, but I
                  # think that's rather irrelevant cos such calls rarely appear
                  # and if they do, it's very unlikely for them to have a number
                  # attached.   You can still edit it by hand anyway..
                  if (preg_match('/^([A-Z]\d)\d$/', $matches[1])) {        # e.g. A45   $c = 0
                      $prefix = $matches[1] . $c;  # ->   A40
                  } else {                         # Otherwise cut all numbers
                      preg_match('/(.*[A-Z])\d+/', $matches[1], $match); # Prefix w/o number in $1
                      $prefix = $match[1] . $c; # Add attached number
                  }
              } elseif (preg_match($csadditions, $c)) {
                  preg_match('/(.+\d)[A-Z]*/', $b, $matches);     # Known attachment -> like Case 1.1
                  $prefix = $matches[1];
              } elseif (preg_match($noneadditions, $c)) {
                 return '';
              } elseif (preg_match('/^\d\d+$/', $c)) {            # more than 2 numbers -> ignore
                  preg_match('/(.+\d)[A-Z]* /', $b, $matches);    # see above
                  $prefix = $matches[1][0];
              } else {                                            # Must be a Prefix!
                  if (preg_match('/\d$/', $c)) {                  # ends in number -> good prefix
                      $prefix = $c;
                  } else {                                        # Add Zero at the end
                      $prefix = $c . "0";
                  }
              }
          } elseif (($a) && (preg_match($noneadditions, $c))) {                # Case 2.1, X/CALL/X ie TF/DL2NWK/MM - DXCC none
            return '';
          } elseif ($a) {
              # $a contains the prefix we want
              if (preg_match('/\d$/', $a)) {                      # ends in number -> good prefix
                  $prefix = $a;
              } else {                                            # add zero if no number
                  $prefix = $a . "0";
              }
          }
          # In very rare cases (right now I can only think of KH5K and KH7K and FRxG/T
          # etc), the prefix is wrong, for example KH5K/DJ1YFK would be KH5K0. In this
          # case, the superfluous part will be cropped. Since this, however, changes the
          # DXCC of the prefix, this will NOT happen when invoked from with an
          # extra parameter $_[1]; this will happen when invoking it from &dxcc.

          if (preg_match('/(\w+\d)[A-Z]+\d/', $prefix, $matches) && $i == null) {
              $prefix = $matches[1][0];
          }
          return $prefix;
      } else {
          return '';
      }
  }

    public function get_entity($dxcc){
      $sql = "select name, cqz, lat, 'long' from dxcc_entities where adif = " . $dxcc;
      $query = $this->db->query($sql);

      if ($query->result() > 0){
          $row = $query->row_array();
          return $row;
      }
      return '';
    }

    /*
     * Same as check_dxcc_table, but the functionality is in
     * a stored procedure which we call
     */
    public function check_dxcc_stored_proc($call, $date){
        $this->db->query("call find_country('".$call."','".$date."', @country, @adif, @cqz)");
        $res = $this->db->query("select @country as country, @adif as adif, @cqz as cqz");
        $d = $res->result_array();

        // Should only be one result.
        // NOTE: might cause unexpected data if there's an
        // error with clublog.org data.
        return $d[0];
    }

    public function check_missing_dxcc_id($all){
        // get all records with no COL_DXCC
        $this->db->select("COL_PRIMARY_KEY, COL_CALL, COL_TIME_ON, COL_TIME_OFF");

        // check which to update - records with no dxcc or all records
        if (!$all){
            $this->db->where("COL_DXCC is NULL");
        }

        $r = $this->db->get($this->config->item('table_name'));

        $count = 0;
        $this->db->trans_start();
        //query dxcc_prefixes
        if ($r->num_rows() > 0){
            foreach($r->result_array() as $row){
                $qso_date = $row['COL_TIME_OFF']=='' ? $row['COL_TIME_ON'] : $row['COL_TIME_OFF'];
                $qso_date = date("Y-m-d", strtotime($qso_date));

                // Manual call
                $d = $this->check_dxcc_table($row['COL_CALL'], $qso_date);

                // Stored procedure call
                //$d = $this->check_dxcc_stored_proc($row["COL_CALL"], $qso_date);

                if ($d[0] != 'Not Found'){
                    $sql = sprintf("update %s set COL_COUNTRY = '%s', COL_DXCC='%s' where COL_PRIMARY_KEY=%d",
                                    $this->config->item('table_name'), addslashes(ucwords(strtolower($d[1]), "- (/")), $d[0], $row['COL_PRIMARY_KEY']);
                    $this->db->query($sql);
                    //print($sql."\n");
                    printf("Updating %s to %s and %s\n<br/>", $row['COL_PRIMARY_KEY'], ucwords(strtolower($d[1]), "- (/"), $d[0]);
                    $count++;
                }
            }
        }
        $this->db->trans_complete();

        print("$count updated\n");
    }

    public function check_missing_continent(){
       // get all records with no COL_CONT
       $this->db->trans_start();
       $sql = "UPDATE ".$this->config->item('table_name')." JOIN dxcc_entities ON ".$this->config->item('table_name').".col_dxcc = dxcc_entities.adif SET col_cont = dxcc_entities.cont WHERE COALESCE(".$this->config->item('table_name').".col_cont, '') = ''";

        $query = $this->db->query($sql);
        print($this->db->affected_rows()." updated\n");
        $this->db->trans_complete();
    }

	public function check_missing_grid_id($all){
        // get all records with no COL_GRIDSQUARE
        $this->db->select("COL_PRIMARY_KEY, COL_CALL, COL_TIME_ON, COL_TIME_OFF");

        // check which to update - records with no Gridsquare or all records
        $this->db->where("COL_GRIDSQUARE is NULL or COL_GRIDSQUARE = ''");

        $where = "(COL_GRIDSQUARE is NULL or COL_GRIDSQUARE = '') AND (COL_VUCC_GRIDS is NULL or COL_VUCC_GRIDS = '')";
        $this->db->where($where);

        $r = $this->db->get($this->config->item('table_name'));

        $count = 0;
        $this->db->trans_start();
        if ($r->num_rows() > 0){
            foreach($r->result_array() as $row){
		          $callsign = $row['COL_CALL'];
              if ($this->config->item('callbook') == "qrz" && $this->config->item('qrz_username') != null && $this->config->item('qrz_password') != null)
              {
                  // Lookup using QRZ
                  $this->load->library('qrz');

                  if(!$this->session->userdata('qrz_session_key')) {
                      $qrz_session_key = $this->qrz->session($this->config->item('qrz_username'), $this->config->item('qrz_password'));
                      $this->session->set_userdata('qrz_session_key', $qrz_session_key);
                  }

                  $callbook = $this->qrz->search($callsign, $this->session->userdata('qrz_session_key'));
              }

              if ($this->config->item('callbook') == "hamqth" && $this->config->item('hamqth_username') != null && $this->config->item('hamqth_password') != null)
              {
                  // Load the HamQTH library
                  $this->load->library('hamqth');

                  if(!$this->session->userdata('hamqth_session_key')) {
                      $hamqth_session_key = $this->hamqth->session($this->config->item('hamqth_username'), $this->config->item('hamqth_password'));
                      $this->session->set_userdata('hamqth_session_key', $hamqth_session_key);
                  }

                  $callbook = $this->hamqth->search($callsign, $this->session->userdata('hamqth_session_key'));

                  // If HamQTH session has expired, start a new session and retry the search.
                  if($callbook['error'] == "Session does not exist or expired") {
                      $hamqth_session_key = $this->hamqth->session($this->config->item('hamqth_username'), $this->config->item('hamqth_password'));
                      $this->session->set_userdata('hamqth_session_key', $hamqth_session_key);
                      $callbook = $this->hamqth->search($callsign, $this->session->userdata('hamqth_session_key'));
                  }
              }
              if (isset($callbook))
              {
                  $return['callsign_qra'] = $callbook['gridsquare'];
              }
              if ($return['callsign_qra'] != ''){
                  $sql = sprintf("update %s set COL_GRIDSQUARE = '%s' where COL_PRIMARY_KEY=%d",
                                  $this->config->item('table_name'), $return['callsign_qra'], $row['COL_PRIMARY_KEY']);
                  $this->db->query($sql);
                  printf("Updating %s to %s\n<br/>", $row['COL_PRIMARY_KEY'], $return['callsign_qra']);
                  $count++;
              }
            }
        }
        $this->db->trans_complete();

        print("$count updated\n");
    }

    public function update_distances(){
        $this->db->select("COL_PRIMARY_KEY, COL_GRIDSQUARE, station_gridsquare");
        $this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
        $this->db->where("((COL_DISTANCE is NULL) or (COL_DISTANCE = 0))");
        $this->db->where("COL_GRIDSQUARE is NOT NULL");
        $this->db->where("COL_GRIDSQUARE != ''");
        $this->db->trans_start();
        $query = $this->db->get($this->config->item('table_name'));

        $count = 0;
        if ($query->num_rows() > 0){
           print("Affected QSOs: ".$this->db->affected_rows()." <br />");
           $this->load->library('Qra');
           foreach ($query->result() as $row) {
              $distance = $this->qra->distance($row->station_gridsquare, $row->COL_GRIDSQUARE, 'K');
              $data = array(
                 'COL_DISTANCE' => $distance,
              );

              $this->db->where(array('COL_PRIMARY_KEY' => $row->COL_PRIMARY_KEY));
              $this->db->update($this->config->item('table_name'), $data);
              $count++;
           }
           print("QSOs updated: ".$count);
        } else {
           print "No QSOs affected.";
        }
        $this->db->trans_complete();
    }

    public function calls_without_station_id() {
		$query=$this->db->query("select distinct COL_STATION_CALLSIGN from ".$this->config->item('table_name')." where station_id is null or station_id = ''");
	    $result = $query->result_array();
	    return $result;
    }

    public function check_for_station_id() {
      $this->db->where('station_id =', NULL);
      $query = $this->db->get($this->config->item('table_name'));
      if($query->num_rows() >= 1) {
        return 1;
      } else {
        return 0;
      }
    }

    public function loadCallBook($callsign, $use_fullname=false)
    {
        $callbook = null;
        try {
            if ($this->config->item('callbook') == "qrz" && $this->config->item('qrz_username') != null && $this->config->item('qrz_password') != null) {
                // Lookup using QRZ
                $this->load->library('qrz');

                if (!$this->session->userdata('qrz_session_key')) {
                    $qrz_session_key = $this->qrz->session($this->config->item('qrz_username'), $this->config->item('qrz_password'));
                    $this->session->set_userdata('qrz_session_key', $qrz_session_key);
                }



                $callbook = $this->qrz->search($callsign, $this->session->userdata('qrz_session_key'), $use_fullname);

                // if we got nothing, it's probably because our session key is invalid, try again
                if (!isset($callbook['callsign']))
                {
                    $qrz_session_key = $this->qrz->session($this->config->item('qrz_username'), $this->config->item('qrz_password'));
                    $this->session->set_userdata('qrz_session_key', $qrz_session_key);
                    $callbook = $this->qrz->search($callsign, $this->session->userdata('qrz_session_key'), $use_fullname);
                }
            }

            if ($this->config->item('callbook') == "hamqth" && $this->config->item('hamqth_username') != null && $this->config->item('hamqth_password') != null) {
                // Load the HamQTH library
                $this->load->library('hamqth');

                if (!$this->session->userdata('hamqth_session_key')) {
                    $hamqth_session_key = $this->hamqth->session($this->config->item('hamqth_username'), $this->config->item('hamqth_password'));
                    $this->session->set_userdata('hamqth_session_key', $hamqth_session_key);
                }

                $callbook = $this->hamqth->search($callsign, $this->session->userdata('hamqth_session_key'));

                // If HamQTH session has expired, start a new session and retry the search.
                if ($callbook['error'] == "Session does not exist or expired") {
                    $hamqth_session_key = $this->hamqth->session($this->config->item('hamqth_username'), $this->config->item('hamqth_password'));
                    $this->session->set_userdata('hamqth_session_key', $hamqth_session_key);
                    $callbook = $this->hamqth->search($callsign, $this->session->userdata('hamqth_session_key'));
                }
            }
        } finally {
            return $callbook;
        }
    }

    public function update_all_station_ids($station_id,$station_callsign) {

	    $data = array(
		    'station_id' => $station_id,
	    );

	    $this->db->where(array('station_id' => NULL));
	    $this->db->where('col_station_callsign', $station_callsign);
	    $this->db->update($this->config->item('table_name'), $data);
	    if ($this->db->affected_rows() > 0) {
		    return TRUE;
	    } else {
		    return FALSE;
	    }
    }

    public function parse_frequency($frequency)
    {
      if (is_int($frequency))
        return $frequency;

      if (is_string($frequency))
      {
        $frequency = strtoupper($frequency);
        $frequency = str_replace(" ", "", $frequency);
        $frequency = str_replace("HZ", "", $frequency);
        $frequency = str_replace(["K", "M", "G", "T"], ["E3", "E6", "E9", "E12"], $frequency);

        // this double conversion will take a string like "3700e3" and convert it into 3700000
        return (int)(float) $frequency;
      }

      return 0;
    }

    /*
     * This function returns the the whole list of dxcc_entities used in various places
     */
    function fetchDxcc() {
        $sql = "select adif, prefix, name, date(end) Enddate, date(start) Startdate from dxcc_entities";

        $sql .= ' order by prefix';
        $query = $this->db->query($sql);

        return $query->result();
    }

    /*
     * This function returns the whole list of iotas used in various places
     */
    function fetchIota() {
        $sql = "select tag, name from iota";

        $sql .= ' order by tag';
        $query = $this->db->query($sql);

        return $query->result();
    }

  function get_lotw_qsos_to_upload($station_id, $start_date, $end_date) {

    $this->db->select('COL_PRIMARY_KEY,COL_CALL, COL_BAND, COL_BAND_RX, COL_TIME_ON, COL_RST_RCVD, COL_RST_SENT, COL_MODE, COL_SUBMODE, COL_FREQ, COL_FREQ_RX, COL_GRIDSQUARE, COL_SAT_NAME, COL_PROP_MODE, COL_LOTW_QSL_SENT, station_id');

    $this->db->where("station_id", $station_id);
    $this->db->group_start();
    $this->db->where('COL_LOTW_QSL_SENT', NULL);
    $this->db->or_where('COL_LOTW_QSL_SENT !=', "Y");
    $this->db->group_end();
    $this->db->where('COL_PROP_MODE !=', "INTERNET");
    $this->db->where('COL_TIME_ON >=', $start_date);
    $this->db->where('COL_TIME_ON <=', $end_date);
    $this->db->order_by("COL_TIME_ON", "desc");

    $query = $this->db->get($this->config->item('table_name'));

    return $query;
  }

  function mark_lotw_sent($qso_id) {

      $data = array(
           'COL_LOTW_QSLSDATE' => date("Y-m-d H:i:s"),
           'COL_LOTW_QSL_SENT' => 'Y',
      );


    $this->db->where('COL_PRIMARY_KEY', $qso_id);

    $this->db->update($this->config->item('table_name'), $data);

    return "Updated";
  }

    function county_qso_details($state, $county) {
		$CI =& get_instance();
		$CI->load->model('logbooks_model');
		$logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));

        $this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
		$this->db->join('lotw_users', 'lotw_users.callsign = '.$this->config->item('table_name').'.col_call', 'left outer');
        $this->db->where_in($this->config->item('table_name').'.station_id', $logbooks_locations_array);
        $this->db->where('COL_STATE', $state);
        $this->db->where('COL_CNTY', $county);
        $this->db->where('COL_PROP_MODE !=', 'SAT');

        return $this->db->get($this->config->item('table_name'));
    }

    public function check_qso_is_accessible($id) {
        // check if qso belongs to user
        $this->db->select($this->config->item('table_name').'.COL_PRIMARY_KEY');
        $this->db->join('station_profile', $this->config->item('table_name').'.station_id = station_profile.station_id');
        $this->db->where('station_profile.user_id', $this->session->userdata('user_id'));
        $this->db->where($this->config->item('table_name').'.COL_PRIMARY_KEY', $id);
        $query = $this->db->get($this->config->item('table_name'));
        if ($query->num_rows() == 1) {
            return true;
        }
        return false;
    }
}

function validateADIFDate($date, $format = 'Ymd')
{
  $d = DateTime::createFromFormat($format, $date);
  return $d && $d->format($format) == $date;
}
?>