first commit
This commit is contained in:
dev-chiefworks
@@ -0,0 +1,589 @@
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<?php
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/**
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* documentation: https://docs.google.com/document/d/19tMnCzGgUF5UT__0AhbptLnCbBBVxX6uA4a_S0M4lFg/edit#
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* Following up this model: https://drive.google.com/file/d/1iXlHDA4gD8UgFBBNGPeP6ypgN2YlLc9n/view
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*/
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echo "[" . date("Y-m-d H:i:s") . "] GPS trips job is starting.\n";
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require __DIR__ . '/../../backend.php';
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/***** connect database *****/
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$db_host = $savvyext->cfgReadChar('gpsdatabase.host');
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$db_name = $savvyext->cfgReadChar('gpsdatabase.name');
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$db_user = $savvyext->cfgReadChar('gpsdatabase.user');
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$db_pass = $savvyext->cfgReadChar('gpsdatabase.pass');
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$db_port = $savvyext->cfgReadLong('gpsdatabase.port');
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$gpsconnstr = "host=${db_host} port=${db_port} dbname=${db_name} user=${db_user} password=${db_pass}";
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$gpsconn = pg_connect($gpsconnstr);
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/***** load configuration *****/
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$httpAuthToken = $savvyext->cfgReadChar('system.oauth2_token');
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$encryptionAlg = $savvyext->cfgReadChar('encryption.algorithm');
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$encryptionKey = $savvyext->cfgReadChar('encryption.key');
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$encryptionIV = $savvyext->cfgReadChar('encryption.iv');
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$baseURL = $savvyext->cfgReadChar('system.api_url');
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$googleApiKey = $savvyext->cfgReadChar('google.api_key');
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/***** definition *****/
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define('STOPPED', 'stopped');
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define('WALKING', 'walking');
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define('DRIVING_AND_PUBLIC_TRANSPORT', 'driving_and_public_tranport');
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define('UNKNOWN', 'unknown');
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$segment_duration_limit = 1; // min
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$trip_limit = 20;
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$needed_trip_limit = 18;
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// km/h
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$walking_low_avg_speed = 3;
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$walking_high_avg_speed = 10;
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$low_avg_speed = 10;
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$high_avg_speed = 160;
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/***** start worker to process a job *****/
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$worker = new GearmanWorker();
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$worker->addServer('127.0.0.1', 4730);
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$worker->addFunction('gps_trips_worker', function (GearmanJob $job) {
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$member_id = $job->workload();
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processMemberGPSTrips($member_id);
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echo "Waiting for job...\n";
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});
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while ($worker->work()) {
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if ($worker->returnCode() != GEARMAN_SUCCESS) {
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echo "return_code: " . $worker->returnCode() . "\n";
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break;
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}
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}
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pg_close($gpsconn);
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echo "[" . date("Y-m-d H:i:s") . "] GPS trips job complete.\n";
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/********************* Functions *********************/
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function processMemberGPSTrips(int $member_id)
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{
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global $gpsconn, $high_avg_speed, $segment_duration_limit, $trip_limit;
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$lastProcessedDatetime = getLastProcessedDatetime($member_id);
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if ($lastProcessedDatetime === NULL) {
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echo 'There something wrong with member_id = '.$member_id;
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return;
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}
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$whereQuery = '';
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if ($lastProcessedDatetime !== '') {
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$whereQuery .= " AND ttime > '" . $lastProcessedDatetime . "' ";
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}
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// and take the data not newer than 24 hrs
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$track_query = " SELECT
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id as members_tracking_id,
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member_id,
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lat,
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lng,
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ttime as time
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FROM
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members_tracking
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WHERE
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member_id = $member_id
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AND ttime <= (now() - INTERVAL '24 HOURS')
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" . $whereQuery . "
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ORDER BY
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ttime ASC
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";
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$track_res = pg_query($gpsconn, $track_query);
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if (!$track_res) {
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echo pg_last_error($gpsconn);
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}
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if ($track_res && pg_num_rows($track_res) > 0) {
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$first_data = NULL;
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$last_data = NULL;
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$dataset = [];
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$rowCount = 0;
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$i = 0;
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$tripStartIndex = 'NONE';
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echo "[" . date("Y-m-d H:i:s") . "] Processing member_id=" . $member_id . " . Waiting for a moment.\n";
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while ($row = pg_fetch_array($track_res)) {
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if ($first_data === NULL) {
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$first_data = $row;
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}
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$last_data = $row;
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$avg_speed_data = calculateAvgSpeed($first_data, $last_data);
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$trip_segment = [
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'members_tracking_id' => $last_data['members_tracking_id'],
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'member_id' => $last_data['member_id'],
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'lat' => $last_data['lat'],
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'lng' => $last_data['lng'],
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'geo' => calculateGeo($last_data['lat'], $last_data['lng']),
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'time' => $last_data['time'],
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'duration' => $avg_speed_data['duration'],
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'distance' => $avg_speed_data['distance'],
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'avg_speed' => $avg_speed_data['avg_speed'],
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'trip_detection_1' => 'NO-TRIP', // initialize it as NO_TRIP, then we will update it later
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'trip_detection_2' => 'NO-TRIP', // initialize it as NO_TRIP, then we will update it later
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];
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// calculate trip_detection_1 base on duration or avg speed
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// if duration of a segement > $segment_duration_limit minute
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// OR avg speed of a segment > $high_avg_speed km/h => segment may not belongs to a trip
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if ($avg_speed_data['duration'] > $segment_duration_limit || $avg_speed_data['duration'] <= 0
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|| $avg_speed_data['avg_speed'] > $high_avg_speed
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) {
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$trip_segment['trip_detection_1'] = 'NO-TRIP';
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} else {
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$trip_segment['trip_detection_1'] = 'TRIP';
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}
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$dataset[] = $trip_segment;
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$rowCount++;
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$first_data = $last_data;
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// calculate trip_detection_2 base on trip_detection_1
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if ($rowCount === $trip_limit) {
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detectTrips($dataset, $tripStartIndex, $i);
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$i++;
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$rowCount--;
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}
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}
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}
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pg_free_result($track_res);
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}
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function getLastProcessedDatetime(int $member_id)
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{
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global $gpsconn;
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$q = " SELECT
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travel_date_end
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FROM
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gps_trips
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WHERE
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member_id = $member_id
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ORDER BY
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travel_date_end DESC
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LIMIT 1
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";
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$lastProcessedDatetime = NULL;
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$r = pg_query($gpsconn, $q);
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if (!$r) {
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echo pg_last_error($gpsconn);
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}
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if ($r && pg_num_rows($r) > 0) {
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$data = pg_fetch_object($r, 0);
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$lastProcessedDatetime = $data->travel_date_end;
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} else {
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$lastProcessedDatetime = '';
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}
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return $lastProcessedDatetime;
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}
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function detectTrips(array &$dataset, &$tripStartIndex, int &$i)
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{
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global $needed_trip_limit, $trip_limit;
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// calculate trip_detection_2 base on trip_detection_1
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$j = $i;
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$segmentCount = 0;
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while ($j < $i + $trip_limit) {
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if ($dataset[$j]['trip_detection_1'] === 'TRIP') {
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$segmentCount++;
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}
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$j++;
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}
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if ($segmentCount >= $needed_trip_limit) {
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$dataset[$i]['trip_detection_2'] = 'TRIP';
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}
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// detect a trip based on trip_detection_2
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if ($dataset[$i]['trip_detection_2'] === 'TRIP' && $tripStartIndex === 'NONE') {
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$tripStartIndex = $i;
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}
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if ($tripStartIndex !== 'NONE' && $dataset[$i]['trip_detection_2'] !== 'TRIP') {
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$trip_data = array_slice($dataset, $tripStartIndex, ($i - 1) - $tripStartIndex + 1);
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processEachTrip($trip_data);
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// remove rows that were calculated for a detected trip, reduce memory
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array_splice($dataset, 0, ($i - 1) - 0 + 1);
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$i = 0;
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$tripStartIndex = 'NONE';
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}
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}
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function processEachTrip(array $trip_data)
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{
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global $walking_low_avg_speed, $walking_high_avg_speed, $low_avg_speed, $high_avg_speed;
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// detect legs of a trip
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$cumulative_duration_total = 0;
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$cumulative_distance_total = 0;
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foreach ($trip_data as $key => $item) {
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// note: in case first item, cumulative_duration and cumulative_distance will be 0
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if ($key != 0) {
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$cumulative_duration_total += $item['duration'];
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$cumulative_distance_total += $item['distance'];
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}
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// km/h
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$cumulative_avg_speed = $cumulative_duration_total > 0 ? round($cumulative_distance_total / $cumulative_duration_total * 60, 2) : 0;
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$trip_data[$key]['cumulative_duration'] = $cumulative_duration_total;
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$trip_data[$key]['cumulative_distance'] = $cumulative_distance_total;
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$trip_data[$key]['cumulative_avg_speed'] = $cumulative_avg_speed;
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$trip_data[$key]['transport_mode'] = '';
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// how to detect transport mode
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if ($cumulative_avg_speed < $walking_low_avg_speed) {
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$trip_data[$key]['transport_mode'] = STOPPED;
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} else if ($cumulative_avg_speed >= $walking_low_avg_speed && $cumulative_avg_speed <= $walking_high_avg_speed) {
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$trip_data[$key]['transport_mode'] = WALKING;
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} else if ($cumulative_avg_speed >= $low_avg_speed && $cumulative_avg_speed <= $high_avg_speed) {
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$trip_data[$key]['transport_mode'] = DRIVING_AND_PUBLIC_TRANSPORT;
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} else if ($cumulative_avg_speed > $high_avg_speed) {
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$trip_data[$key]['transport_mode'] = UNKNOWN;
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}
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}
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$gps_trip_id = insertATripIntoDatabase($trip_data);
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splitLegsFromATrip($gps_trip_id, $trip_data);
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}
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function insertATripIntoDatabase(array $trip_data): int
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{
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global $gpsconn;
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if (count($trip_data) <= 0) {
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return 0;
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}
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$query = "
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INSERT INTO gps_trips(member_id, travel_date, travel_date_end, duration,
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distance, location_start_lat, location_start_lng, location_start,
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location_start_id, location_end_lat, location_end_lng, location_end,
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location_end_id, avg_speed, start_members_tracking_id, last_members_tracking_id)
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16) RETURNING id;
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";
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$uniq = 'insert_gps_trips_' . uniqid(rand(), true);
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pg_prepare($gpsconn, $uniq, $query);
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$first_item = $trip_data[0];
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$last_item = end($trip_data);
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$avg_speed_data = calculateAvgSpeed($first_item, $last_item);
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$duration_total = round($avg_speed_data['duration'], 2);
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$distance_total = round($avg_speed_data['distance'], 2);
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$avg_speed = round($avg_speed_data['avg_speed'], 2);
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$res = pg_execute($gpsconn, $uniq, [
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$first_item['member_id'],
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$first_item['time'],
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$last_item['time'],
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$duration_total,
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$distance_total,
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$first_item['lat'],
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$first_item['lng'],
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$first_item['geo'],
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getAddressId($first_item['lat'], $first_item['lng']),
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$last_item['lat'],
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$last_item['lng'],
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$last_item['geo'],
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getAddressId($last_item['lat'], $last_item['lng']),
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$avg_speed,
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$first_item['members_tracking_id'],
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$last_item['members_tracking_id']
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]);
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if ($res) {
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$id = (int) pg_fetch_result($res, 0);
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return $id;
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} else {
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echo pg_last_error($gpsconn);
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}
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return 0;
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}
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function splitLegsFromATrip(int $gps_trip_id, array $trip_data)
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{
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$trip_data_count = count($trip_data);
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if ($trip_data_count <= 0) {
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return;
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}
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$transport_mode = '';
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$change_point_index = 0;
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$array_key_last = array_keys($trip_data)[$trip_data_count - 1];
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foreach ($trip_data as $key => $item) {
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$leg_last_index = $key;
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if ((isset($trip_data[$leg_last_index + 1]['transport_mode']) && $trip_data[$leg_last_index]['transport_mode'] != $trip_data[$leg_last_index + 1]['transport_mode'])
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|| ($array_key_last == $leg_last_index)
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) {
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// precess save for each leg
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$leg_start_index = $change_point_index == 0 ? 0 : $change_point_index - 1;
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$leg_data = array_slice($trip_data, $leg_start_index, $leg_last_index - $leg_start_index + 1);
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insertALegIntoDatabase($gps_trip_id, $leg_data, $trip_data[$leg_last_index]['transport_mode']);
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$change_point_index = $leg_last_index + 1;
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}
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}
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}
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function insertALegIntoDatabase(int $gps_trip_id, array $trip_data, string $transport_mode)
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{
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global $gpsconn;
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if (count($trip_data) <= 0) {
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return;
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}
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$query = "
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INSERT INTO gps_trips_legs(member_id, gps_trip_id, travel_date, travel_date_end, duration,
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distance, location_start_lat, location_start_lng, location_start,
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location_start_id, location_end_lat, location_end_lng, location_end,
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location_end_id, avg_speed, transport_mode, start_members_tracking_id, last_members_tracking_id)
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18);
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";
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$uniq = 'insert_gps_trips_legs_' . uniqid(rand(), true);
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pg_prepare($gpsconn, $uniq, $query);
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$first_item = $trip_data[0];
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$last_item = end($trip_data);
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$avg_speed_data = calculateAvgSpeed($first_item, $last_item);
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$duration_total = round($avg_speed_data['duration'], 2);
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$distance_total = round($avg_speed_data['distance'], 2);
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$avg_speed = round($avg_speed_data['avg_speed'], 2);
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$res = pg_execute($gpsconn, $uniq, [
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$first_item['member_id'],
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$gps_trip_id,
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$first_item['time'],
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$last_item['time'],
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$duration_total,
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$distance_total,
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$first_item['lat'],
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$first_item['lng'],
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$first_item['geo'],
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getAddressId($first_item['lat'], $first_item['lng']),
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$last_item['lat'],
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$last_item['lng'],
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$last_item['geo'],
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getAddressId($last_item['lat'], $last_item['lng']),
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$avg_speed,
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$transport_mode,
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$first_item['members_tracking_id'],
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$last_item['members_tracking_id']
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]);
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if (!$res) {
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echo pg_last_error($gpsconn);
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}
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}
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function calculateGeo($lat, $lng)
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{
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global $gpsconn;
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$q = "
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SELECT ST_SetSRID(ST_MakePoint('" . $lng . "','" . $lat . "'), 4326)::geography as geo
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";
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$r = pg_query($gpsconn, $q);
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if (!$r) {
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echo pg_last_error($gpsconn);
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}
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if ($r && pg_num_rows($r) > 0) {
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$data = pg_fetch_object($r, 0);
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return $data->geo;
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}
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return null;
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}
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function calculateAvgSpeed(array $first_data, array $last_data): array
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{
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$start_date = strtotime($first_data['time']);
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$end_date = strtotime($last_data['time']);
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$duration = abs($start_date - $end_date);
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$duration = $duration / 60; // convert sec to min
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$distance = sqrt(pow(abs(($last_data['lng'] - $first_data['lng']) * 111), 2) + pow(abs(($last_data['lat'] - $first_data['lat']) * 111), 2));
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$avg_speed = ($duration > 0) ? ($distance / $duration * 60) : 0; // convert km/m to km/h
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return [
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'duration' => $duration,
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'distance' => $distance,
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'avg_speed' => $avg_speed,
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];
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}
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||||
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||||
function getAddressId(float $lat, float $lng) : int {
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$reverse_data = reverseGeocode($lat, $lng);
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if (empty($reverse_data)) {
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return 0;
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}
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|
||||
list($fAddress, $err) = geocode($reverse_data['address_name'], $reverse_data['country_short_name']);
|
||||
if (!is_array($fAddress) || !array_key_exists('geocode',$fAddress) || !is_array($fAddress['geocode'])
|
||||
|| !array_key_exists('id',$fAddress['geocode']) || $fAddress['geocode']['id']<1) {
|
||||
// Failed to geocode from address
|
||||
return 0;
|
||||
}
|
||||
|
||||
return $fAddress['geocode']['id'];
|
||||
}
|
||||
|
||||
function geocode(string $address_name, string $country_code, int $member_id=0) : array{
|
||||
global $encryptionAlg, $encryptionKey, $encryptionIV, $baseURL, $httpAuthToken;
|
||||
|
||||
$in = [
|
||||
'address' => $address_name,
|
||||
'member_id' => $member_id,
|
||||
'country' => $country_code
|
||||
];
|
||||
$data = http_build_query($in);
|
||||
|
||||
$url = $baseURL . "/trips/api/geocode/?".$data;
|
||||
|
||||
$ch = curl_init($url);
|
||||
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "GET");
|
||||
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
|
||||
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
|
||||
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
|
||||
curl_setopt($ch, CURLOPT_VERBOSE, false);
|
||||
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
|
||||
'Content-Type: application/json',
|
||||
'Authorization: Server-Token ' . $httpAuthToken,
|
||||
"client_id: BATCH"
|
||||
)
|
||||
);
|
||||
|
||||
$body = curl_exec($ch);
|
||||
|
||||
$result = json_decode($body,true);
|
||||
|
||||
$payload = openssl_decrypt(
|
||||
hex2bin(
|
||||
$result['payload']
|
||||
),
|
||||
$encryptionAlg,
|
||||
$encryptionKey,
|
||||
OPENSSL_RAW_DATA,
|
||||
$encryptionIV
|
||||
);
|
||||
|
||||
return [json_decode($payload,true),$body];
|
||||
}
|
||||
|
||||
function reverseGeocode(float $lat, float $lng) : array
|
||||
{
|
||||
// LINK: https://developers.google.com/maps/documentation/geocoding/start#reverse
|
||||
|
||||
global $googleApiKey;
|
||||
$url = "https://maps.googleapis.com/maps/api/geocode/json?latlng=${lat},${lng}&key=${googleApiKey}";
|
||||
|
||||
$ch = curl_init($url);
|
||||
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
|
||||
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
|
||||
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
|
||||
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
|
||||
curl_setopt($ch, CURLOPT_VERBOSE, false);
|
||||
|
||||
$body = curl_exec($ch);
|
||||
|
||||
$res = json_decode($body);
|
||||
|
||||
$country_short_name = '';
|
||||
$address_name = '';
|
||||
if (isset($res->status) && $res->status === 'OK') {
|
||||
$address_components = $res->results[0]->address_components;
|
||||
$address_name = $res->results[0]->formatted_address;
|
||||
|
||||
for ($i = 0;$i < count($address_components);$i++) {
|
||||
$cn = array($address_components[$i]->types[0]);
|
||||
if (in_array("country", $cn)) {
|
||||
$country_short_name = $address_components[$i]->short_name;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!empty($country_short_name) && !empty($address_name)) {
|
||||
return [
|
||||
'country_short_name' => $country_short_name,
|
||||
'address_name' => $address_name,
|
||||
];
|
||||
}
|
||||
|
||||
return [];
|
||||
}
|
||||
|
||||
// export for DEBUG
|
||||
function exportCsv(array $data)
|
||||
{
|
||||
$fp = fopen('/Users/inmac/Sites/FloatAdmin/adminsavvy/CRONS/transportation_mode_detection/trip.csv', 'a+');
|
||||
|
||||
$data = array_map(function ($el) {
|
||||
return [
|
||||
$el['members_tracking_id'],
|
||||
$el['lng'],
|
||||
$el['lat'],
|
||||
$el['time'],
|
||||
round($el['duration'], 2),
|
||||
round($el['distance'], 2),
|
||||
round($el['avg_speed'], 2),
|
||||
$el['trip_detection_1'],
|
||||
$el['trip_detection_2'],
|
||||
round($el['cumulative_duration'], 2),
|
||||
round($el['cumulative_distance'], 2),
|
||||
round($el['cumulative_avg_speed'], 2),
|
||||
$el['transport_mode'],
|
||||
];
|
||||
}, $data);
|
||||
|
||||
array_unshift($data, [
|
||||
'members_tracking_id',
|
||||
'lng',
|
||||
'lat',
|
||||
'time',
|
||||
'duration',
|
||||
'distance',
|
||||
'avg_speed',
|
||||
'trip_detection_1',
|
||||
'trip_detection_2',
|
||||
'cumulative_duration',
|
||||
'cumulative_distance',
|
||||
'cumulative_avg_speed',
|
||||
'transport_mode',
|
||||
]);
|
||||
|
||||
foreach ($data as $row) {
|
||||
fputcsv($fp, $row);
|
||||
}
|
||||
|
||||
fclose($fp);
|
||||
}
|
||||
Reference in New Issue
Block a user