365 lines
13 KiB
PHP
365 lines
13 KiB
PHP
<?php
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/* μlogger
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*
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* Copyright(C) 2017 Bartek Fabiszewski (www.fabiszewski.net)
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*
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* This is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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require_once(ROOT_DIR . "/helpers/db.php");
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require_once(ROOT_DIR . "/helpers/track.php");
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/**
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* Positions handling
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*/
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class uPosition {
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/** @param int Position id */
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public $id;
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/** @param int Unix time stamp */
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public $timestamp;
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/** @param int User id */
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public $userId;
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/** @param String User login */
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public $userLogin;
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/** @param int Track id */
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public $trackId;
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/** @param String Track name */
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public $trackName;
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/** @param double Latitude */
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public $latitude;
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/** @param double Longitude */
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public $longitude;
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/** @param double Altitude */
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public $altitude;
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/** @param double Speed */
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public $speed;
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/** @param double Bearing */
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public $bearing;
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/** @param int Accuracy */
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public $accuracy;
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/** @param String Provider */
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public $provider;
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/** @param String Comment */
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public $comment; // not used yet
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/** @param int Image id */
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public $imageId; // not used yet
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public $isValid = false;
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private static $db;
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/**
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* Constructor
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* @param integer $positionId Position id
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*/
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public function __construct($positionId = NULL) {
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if (!empty($positionId)) {
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$query = "SELECT p.id, " . self::db()->unix_timestamp('p.time') . " AS tstamp, p.user_id, p.track_id,
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p.latitude, p.longitude, p.altitude, p.speed, p.bearing, p.accuracy, p.provider,
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p.comment, p.image_id, u.login, t.name
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FROM " . self::db()->table('positions') . " p
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LEFT JOIN " . self::db()->table('users') . " u ON (p.user_id = u.id)
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LEFT JOIN " . self::db()->table('tracks') . " t ON (p.track_id = t.id)
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WHERE id = ? LIMIT 1";
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$params = [ $positionId ];
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try {
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$this->loadWithQuery($query, $params);
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} catch (PDOException $e) {
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// TODO: handle exception
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syslog(LOG_ERR, $e->getMessage());
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}
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}
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}
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/**
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* Get db instance
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*
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* @return uDb instance
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*/
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private static function db() {
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return uDb::getInstance();
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}
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/**
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* Add position
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*
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* @param int $userId
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* @param int $trackId
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* @param int $timestamp Unix time stamp
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* @param double $lat
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* @param double $lon
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* @param double $altitude Optional
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* @param double $speed Optional
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* @param double $bearing Optional
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* @param int $accuracy Optional
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* @param string $provider Optional
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* @param string $comment Optional
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* @param int $imageId Optional
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* @return int|bool New position id in database, false on error
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*/
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public static function add($userId, $trackId, $timestamp, $lat, $lon,
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$altitude = NULL, $speed = NULL, $bearing = NULL, $accuracy = NULL,
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$provider = NULL, $comment = NULL, $imageId = NULL) {
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$positionId = false;
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if (is_numeric($lat) && is_numeric($lon) && is_numeric($timestamp) && is_numeric($userId) && is_numeric($trackId)) {
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$track = new uTrack($trackId);
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if ($track->isValid && $track->userId == $userId) {
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try {
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$table = self::db()->table('positions');
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$query = "INSERT INTO $table
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(user_id, track_id,
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time, latitude, longitude, altitude, speed, bearing, accuracy, provider, comment, image_id)
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VALUES (?, ?, " . self::db()->from_unixtime('?') . ", ?, ?, ?, ?, ?, ?, ?, ?, ?)";
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$stmt = self::db()->prepare($query);
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$params = [ $userId, $trackId,
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$timestamp, $lat, $lon, $altitude, $speed, $bearing, $accuracy, $provider, $comment, $imageId ];
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$stmt->execute($params);
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$positionId = self::db()->lastInsertId("${table}_id_seq");
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} catch (PDOException $e) {
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// TODO: handle error
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syslog(LOG_ERR, $e->getMessage());
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}
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}
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}
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return $positionId;
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}
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/**
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* Delete all user's positions, optionally limit to given track
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*
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* @param int $userId User id
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* @param int $trackId Optional track id
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* @return bool True if success, false otherwise
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*/
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public static function deleteAll($userId, $trackId = NULL) {
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$ret = false;
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if (!empty($userId)) {
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$args = [];
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$where = "WHERE user_id = ?";
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$args[] = $userId;
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if (!empty($trackId)) {
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$where .= " AND track_id = ?";
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$args[] = $trackId;
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}
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try {
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$query = "DELETE FROM " . self::db()->table('positions') . " $where";
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$stmt = self::db()->prepare($query);
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$stmt->execute($args);
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$ret = true;
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} catch (PDOException $e) {
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// TODO: handle exception
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syslog(LOG_ERR, $e->getMessage());
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}
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}
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return $ret;
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}
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/**
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* Get last position data from database
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* (for given user if specified)
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*
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* @param int $userId Optional user id
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* @return uPosition Position
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*/
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public static function getLast($userId = NULL) {
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if (!empty($userId)) {
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$where = "WHERE p.user_id = ?";
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$params = [ $userId ];
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} else {
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$where = "";
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$params = NULL;
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}
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$query = "SELECT p.id, " . self::db()->unix_timestamp('p.time') . " AS tstamp, p.user_id, p.track_id,
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p.latitude, p.longitude, p.altitude, p.speed, p.bearing, p.accuracy, p.provider,
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p.comment, p.image_id, u.login, t.name
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FROM " . self::db()->table('positions') . " p
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LEFT JOIN " . self::db()->table('users') . " u ON (p.user_id = u.id)
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LEFT JOIN " . self::db()->table('tracks') . " t ON (p.track_id = t.id)
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$where
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ORDER BY p.time DESC, p.id DESC LIMIT 1";
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$position = new uPosition();
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try {
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$position->loadWithQuery($query, $params);
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} catch (PDOException $e) {
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// TODO: handle exception
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syslog(LOG_ERR, $e->getMessage());
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}
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return $position;
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}
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/**
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* Get last positions for all users
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*
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* @return array|bool Array of uPosition positions, false on error
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*/
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public static function getLastAllUsers() {
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$query = "SELECT p.id, " . self::db()->unix_timestamp('p.time') . " AS tstamp, p.user_id, p.track_id,
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p.latitude, p.longitude, p.altitude, p.speed, p.bearing, p.accuracy, p.provider,
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p.comment, p.image_id, u.login, t.name
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FROM " . self::db()->table('positions') . " p
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LEFT JOIN " . self::db()->table('users') . " u ON (p.user_id = u.id)
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LEFT JOIN " . self::db()->table('tracks') . " t ON (p.track_id = t.id)
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WHERE p.id = (
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SELECT p2.id FROM " . self::db()->table('positions') . " p2
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WHERE p2.user_id = p.user_id
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ORDER BY p2.time DESC, p2.id DESC
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LIMIT 1
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)";
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$positionsArr = [];
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try {
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$result = self::db()->query($query);
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while ($row = $result->fetch()) {
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$positionsArr[] = self::rowToObject($row);
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}
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} catch (PDOException $e) {
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// TODO: handle exception
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syslog(LOG_ERR, $e->getMessage());
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}
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return $positionsArr;
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}
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/**
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* Get array of all positions
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*
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* @param int $userId Optional limit to given user id
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* @param int $trackId Optional limit to given track id
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* @param int $afterId Optional limit to positions with id greater then given id
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* @return array|bool Array of uPosition positions, false on error
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*/
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public static function getAll($userId = NULL, $trackId = NULL, $afterId = NULL) {
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$rules = [];
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if (!empty($userId)) {
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$rules[] = "p.user_id = " . self::db()->quote($userId);
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}
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if (!empty($trackId)) {
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$rules[] = "p.track_id = " . self::db()->quote($trackId);
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}
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if (!empty($trackId)) {
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$rules[] = "p.id > " . self::db()->quote($afterId);
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}
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if (!empty($rules)) {
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$where = "WHERE " . implode(" AND ", $rules);
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} else {
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$where = "";
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}
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$query = "SELECT p.id, " . self::db()->unix_timestamp('p.time') . " AS tstamp, p.user_id, p.track_id,
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p.latitude, p.longitude, p.altitude, p.speed, p.bearing, p.accuracy, p.provider,
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p.comment, p.image_id, u.login, t.name
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FROM " . self::db()->table('positions') . " p
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LEFT JOIN " . self::db()->table('users') . " u ON (p.user_id = u.id)
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LEFT JOIN " . self::db()->table('tracks') . " t ON (p.track_id = t.id)
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$where
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ORDER BY p.time, p.id";
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$positionsArr = [];
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try {
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$result = self::db()->query($query);
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while ($row = $result->fetch()) {
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$positionsArr[] = self::rowToObject($row);
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}
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} catch (PDOException $e) {
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// TODO: handle exception
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syslog(LOG_ERR, $e->getMessage());
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}
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return $positionsArr;
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}
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/**
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* Calculate distance to target point using haversine formula
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*
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* @param uPosition $target Target position
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* @return int Distance in meters
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*/
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public function distanceTo($target) {
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$lat1 = deg2rad($this->latitude);
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$lon1 = deg2rad($this->longitude);
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$lat2 = deg2rad($target->latitude);
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$lon2 = deg2rad($target->longitude);
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$latD = $lat2 - $lat1;
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$lonD = $lon2 - $lon1;
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$bearing = 2 * asin(sqrt(pow(sin($latD / 2), 2) + cos($lat1) * cos($lat2) * pow(sin($lonD / 2), 2)));
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return $bearing * 6371000;
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}
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/**
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* Calculate time elapsed since target point
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*
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* @param uPosition $target Target position
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* @return int Number of seconds
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*/
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public function secondsTo($target) {
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return $this->timestamp - $target->timestamp;
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}
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/**
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* Convert database row to uPosition
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*
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* @param array $row Row
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* @return uPosition Position
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*/
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private static function rowToObject($row) {
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$position = new uPosition();
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$position->id = $row['id'];
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$position->timestamp = $row['tstamp'];
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$position->userId = $row['user_id'];
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$position->userLogin = $row['login'];
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$position->trackId = $row['track_id'];
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$position->trackName = $row['name'];
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$position->latitude = $row['latitude'];
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$position->longitude = $row['longitude'];
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$position->altitude = $row['altitude'];
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$position->speed = $row['speed'];
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$position->bearing = $row['bearing'];
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$position->accuracy = $row['accuracy'];
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$position->provider = $row['provider'];
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$position->comment = $row['comment'];
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$position->imageId = $row['image_id'];
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$position->isValid = true;
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return $position;
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}
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/**
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* Fill class properties with database query result
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*
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* @param string $query Query
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* @param array|null $params Optional array of bind parameters
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* @throws PDOException
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*/
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private function loadWithQuery($query, $params = NULL) {
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$stmt = self::db()->prepare($query);
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$stmt->execute($params);
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$stmt->bindColumn('id', $this->id, PDO::PARAM_INT);
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$stmt->bindColumn('tstamp', $this->timestamp, PDO::PARAM_INT);
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$stmt->bindColumn('user_id', $this->userId, PDO::PARAM_INT);
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$stmt->bindColumn('track_id', $this->trackId, PDO::PARAM_INT);
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$stmt->bindColumn('latitude', $this->latitude);
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$stmt->bindColumn('longitude', $this->longitude);
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$stmt->bindColumn('altitude', $this->altitude);
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$stmt->bindColumn('speed', $this->speed);
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$stmt->bindColumn('bearing', $this->bearing);
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$stmt->bindColumn('accuracy', $this->accuracy, PDO::PARAM_INT);
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$stmt->bindColumn('provider', $this->provider);
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$stmt->bindColumn('comment', $this->comment);
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$stmt->bindColumn('image_id', $this->imageId, PDO::PARAM_INT);
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$stmt->bindColumn('login', $this->userLogin);
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$stmt->bindColumn('name', $this->trackName);
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if ($stmt->fetch(PDO::FETCH_BOUND)) {
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$this->isValid = true;
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}
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}
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}
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?>
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