271 行
8.5 KiB
PHP
271 行
8.5 KiB
PHP
<?php
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if (!defined('BASEPATH')) exit('No direct script access allowed');
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class Distances_model extends CI_Model
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{
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function get_distances($postdata, $measurement_base) {
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$CI =& get_instance();
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$CI->load->model('logbooks_model');
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$logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
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if (!$logbooks_locations_array) {
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header('Content-Type: application/json');
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echo json_encode(array('Error' => 'No QSOs found to plot.'));
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return;
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}
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$result = array();
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foreach ($logbooks_locations_array as $station_id) {
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$station_gridsquare = $this->find_gridsquare($station_id);
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if ($station_gridsquare != null) {
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$gridsquare = explode(',', $station_gridsquare); // We need to convert to an array, since a user can enter several gridsquares
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$this->db->select('COL_PRIMARY_KEY,COL_DISTANCE,col_call callsign, col_gridsquare grid');
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$this->db->where('LENGTH(col_gridsquare) >', 0);
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if ($postdata['band'] == 'sat') {
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$this->db->where('col_prop_mode', $postdata['band']);
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if ($postdata['sat'] != 'All') {
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$this->db->where('col_sat_name', $postdata['sat']);
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}
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}
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else {
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$this->db->where('col_band', $postdata['band']);
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}
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$this->db->where('station_id', $station_id);
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$queryresult = $this->db->get($this->config->item('table_name'));
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if ($queryresult->result_array()) {
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$temp = $this->plot($queryresult->result_array(), $gridsquare, $measurement_base);
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$result = $this->mergeresult($result, $temp);
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}
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}
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}
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if ($result) {
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header('Content-Type: application/json');
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echo json_encode($result);
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}
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else {
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header('Content-Type: application/json');
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echo json_encode(array('Error' => 'No QSOs found to plot.'));
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}
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}
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/*
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* We merge the result from several station_id's. They can have different gridsquares, so we need to use the correct gridsquare to calculate the correct distance.
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*/
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function mergeresult($result, $add) {
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if (sizeof($result) > 0) {
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if ($result['qrb']['Distance'] < $add['qrb']['Distance']) {
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$result['qrb']['Distance'] = $add['qrb']['Distance'];
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$result['qrb']['Grid'] = $add['qrb']['Grid'];
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$result['qrb']['Callsign'] = $add['qrb']['Callsign'];
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}
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$result['qrb']['Qsos'] += $add['qrb']['Qsos'];
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for ($i = 0; $i <= 399; $i++) {
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if(isset($result['qsodata'][$i]['count'])) {
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$result['qsodata'][$i]['count'] += $add['qsodata'][$i]['count'];
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}
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if(isset($result['qsodata'][$i]['callcount'])) {
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if ($result['qsodata'][$i]['callcount'] < 5 && $add['qsodata'][$i]['callcount'] > 0) {
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$calls = explode(',', $add['qsodata'][$i]['calls']);
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foreach ($calls as $c) {
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if ($result['qsodata'][$i]['callcount'] < 5) {
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if ($result['qsodata'][$i]['callcount'] > 0) {
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$result['qsodata'][$i]['calls'] .= ', ';
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}
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$result['qsodata'][$i]['calls'] .= $c;
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$result['qsodata'][$i]['callcount']++;
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}
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}
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}
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}
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}
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return $result;
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}
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return $add;
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}
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/*
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* Fetches the gridsquare from the station_id
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*/
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function find_gridsquare($station_id) {
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$this->db->where('station_id', $station_id);
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$result = $this->db->get('station_profile')->row_array();
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if ($result) {
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return $result['station_gridsquare'];
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}
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return null;
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}
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// This functions takes query result from the database and extracts grids from the qso,
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// then calculates distance between homelocator and locator given in qso.
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// It builds an array, which has 50km intervals, then inputs each length into the correct spot
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// The function returns a json-encoded array.
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function plot($qsoArray, $gridsquare, $measurement_base) {
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$this->load->library('Qra');
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$stationgrid = strtoupper($gridsquare[0]); // We use only the first entered gridsquare from the active profile
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if (strlen($stationgrid) == 4) $stationgrid .= 'MM'; // adding center of grid if only 4 digits are specified
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switch ($measurement_base) {
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case 'M':
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$unit = "mi";
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$dist = '13000';
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break;
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case 'K':
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$unit = "km";
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$dist = '20000';
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break;
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case 'N':
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$unit = "nmi";
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$dist = '11000';
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break;
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default:
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$unit = "km";
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$dist = '20000';
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}
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if (!$this->valid_locator($stationgrid)) {
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header('Content-Type: application/json');
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echo json_encode(array('Error' => 'Error. There is a problem with the gridsquare set in your profile!'));
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exit;
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} else {
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// Making the array we will use for plotting, we save occurrences of the length of each qso in the array
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$j = 0;
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for ($i = 0; $j < $dist; $i++) {
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$dataarray[$i]['dist'] = $j . $unit . ' - ' . ($j + 50) . $unit;
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$dataarray[$i]['count'] = 0;
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$dataarray[$i]['calls'] = '';
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$dataarray[$i]['callcount'] = 0;
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$j += 50;
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}
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$qrb = array ( // Used for storing the QSO with the longest QRB
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'Callsign' => '',
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'Grid' => '',
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'Distance' => '',
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'Qsos' => '',
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'Grids' => ''
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);
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foreach ($qsoArray as $qso) {
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$qrb['Qsos']++; // Counts up number of qsos
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$bearingdistance = $this->qra->distance($stationgrid, $qso['grid'], $measurement_base);
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if ($bearingdistance != $qso['COL_DISTANCE']) {
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$data = array('COL_DISTANCE' => $bearingdistance);
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$this->db->where('COL_PRIMARY_KEY', $qso['COL_PRIMARY_KEY']);
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$this->db->update($this->config->item('table_name'), $data);
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}
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$arrayplacement = (int)($bearingdistance / 50); // Resolution is 50, calculates where to put result in array
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if ($bearingdistance > $qrb['Distance']) { // Saves the longest QSO
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$qrb['Distance'] = $bearingdistance;
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$qrb['Callsign'] = $qso['callsign'];
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$qrb['Grid'] = $qso['grid'];
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}
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$dataarray[$arrayplacement]['count']++; // Used for counting total qsos plotted
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if ($dataarray[$arrayplacement]['callcount'] < 5) { // Used for tooltip in graph, set limit to 5 calls shown
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if ($dataarray[$arrayplacement]['callcount'] > 0) {
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$dataarray[$arrayplacement]['calls'] .= ', ';
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}
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$dataarray[$arrayplacement]['calls'] .= $qso['callsign'];
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$dataarray[$arrayplacement]['callcount']++;
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}
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}
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$data['ok'] = 'OK';
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$data['qrb'] = $qrb;
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$data['qsodata'] = $dataarray;
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$data['unit'] = $unit;
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return $data;
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}
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}
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/*
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* Checks the validity of the locator
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* Input: locator
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* Returns: bool
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*/
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function valid_locator ($loc) {
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$regex = '^[A-R]{2}[0-9]{2}[A-X]{2}$';
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if (preg_match("%{$regex}%i", $loc)) {
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return true;
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}
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else {
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return false;
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}
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}
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/*
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* Used to fetch QSOs from the logbook in the awards
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*/
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public function qso_details($distance, $band, $sat){
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$distarray = $this->getdistparams($distance);
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$CI =& get_instance();
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$CI->load->model('logbooks_model');
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$logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
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$this->db->join('station_profile', 'station_profile.station_id = '.$this->config->item('table_name').'.station_id');
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$this->db->join('dxcc_entities', 'dxcc_entities.adif = '.$this->config->item('table_name').'.COL_DXCC', 'left outer');
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$this->db->join('lotw_users', 'lotw_users.callsign = '.$this->config->item('table_name').'.col_call', 'left outer');
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$this->db->where('COL_DISTANCE >=', $distarray[0]);
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$this->db->where('COL_DISTANCE <=', $distarray[1]);
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$this->db->where('LENGTH(col_gridsquare) >', 0);
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$this->db->where_in($this->config->item('table_name').'.station_id', $logbooks_locations_array);
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if ($band != 'All') {
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if($band != "sat") {
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$this->db->where('COL_PROP_MODE !=', 'SAT');
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$this->db->where('COL_BAND', $band);
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} else {
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$this->db->where('COL_PROP_MODE', "SAT");
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if ($sat != 'All') {
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$this->db->where('COL_SAT_NAME', $sat);
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}
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}
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}
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$this->db->order_by("COL_TIME_ON", "desc");
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return $this->db->get($this->config->item('table_name'));
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}
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function getdistparams($distance) {
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$temp = explode('-', $distance);
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$regex = '[a-zA-Z]+';
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preg_match("%{$regex}%i", $temp[0], $unit);
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$result = [];
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$result[0] = filter_var($temp[0], FILTER_SANITIZE_NUMBER_INT);
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$result[1] = filter_var($temp[1], FILTER_SANITIZE_NUMBER_INT);
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if ($unit[0] == 'mi') {
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$result[0] *= 1.609344;
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$result[1] *= 1.609344;
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}
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if ($unit[0] == 'nmi') {
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$result[0] *= 1.852;
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$result[1] *= 1.852;
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}
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return $result;
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}
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}
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