<?php
 
/*
 *    Copyright 2010,2011 Alexander Sadleir 
 
  Licensed under the Apache License, Version 2.0 (the 'License');
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at
 
  http://www.apache.org/licenses/LICENSE-2.0
 
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an 'AS IS' BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
 */
 
function getStop($stopID) {
    global $conn;
    $query = 'Select * from stops where stop_id = :stopID LIMIT 1';
    debug($query, 'database');
    $query = $conn->prepare($query);
    $query->bindParam(':stopID', $stopID);
    $query->execute();
    if (!$query) {
        databaseError($conn->errorInfo());
        return Array();
    }
    return $query->fetch(PDO :: FETCH_ASSOC);
}
 
function getStops($firstLetter = '', $startsWith = '') {
    global $conn;
    $conditions = Array();
    if ($firstLetter != '')
        $conditions[] = 'substr(stop_name,1,1) = :firstLetter';
    if ($startsWith != '')
        $conditions[] = 'stop_name like :startsWith';
    $query = 'Select * from stops';
    if (sizeof($conditions) > 0) {
        if (sizeof($conditions) > 1) {
            $query .= ' Where ' . implode(' AND ', $conditions) . ' ';
        } else {
            $query .= ' Where ' . $conditions[0] . ' ';
        }
    }
    $query .= ' order by stop_name;';
    debug($query, 'database');
    $query = $conn->prepare($query);
    if ($firstLetter != '')
        $query->bindParam(':firstLetter', $firstLetter);
 
    if ($startsWith != '') {
        $startsWith = $startsWith . '%';
        $query->bindParam(':startsWith', $startsWith);
    }
    $query->execute();
    if (!$query) {
        databaseError($conn->errorInfo());
        return Array();
    }
    return $query->fetchAll();
}
 
function getNearbyStops($lat, $lng, $limit = '', $distance = 1000) {
    if ($lat == null || $lng == null)
        return Array();
    if ($limit != '')
        $limitSQL = ' LIMIT :limit ';
    global $conn;
    $query = 'Select *, ST_Distance(position, ST_GeographyFromText(\'SRID=4326;POINT($lng $lat)\'), FALSE) as distance
        from stops WHERE ST_DWithin(position, ST_GeographyFromText(\'SRID=4326;POINT($lng $lat)\'), :distance, FALSE)
        order by distance $limitSQL;';
    debug($query, 'database');
    $query = $conn->prepare($query);
    $query->bindParam(':distance', $distance);
    $query->bindParam(':limit', $limit);
    $query->execute();
    if (!$query) {
        databaseError($conn->errorInfo());
        return Array();
    }
    return $query->fetchAll();
}
 
function getStopsByName($name) {
    global $conn;
    $query = 'Select * from stops where stop_name LIKE :name;';
    debug($query, 'database');
    $query = $conn->prepare($query);
    $name = $name . '%';
    $query->bindParam(':name', $name);
    $query->execute();
    if (!$query) {
        databaseError($conn->errorInfo());
        return Array();
    }
    return $query->fetchAll();
}
 
function getStopsBySuburb($suburb) {
    global $conn;
    $query = 'Select * from stops where stop_desc LIKE :suburb order by stop_name;';
    debug($query, 'database');
    $query = $conn->prepare($query);
    $suburb = '%<br>Suburb: %' . $suburb . '%';
    $query->bindParam(':suburb', $suburb);
    $query->execute();
    if (!$query) {
        databaseError($conn->errorInfo());
        return Array();
    }
    return $query->fetchAll();
}
 
function getStopsByStopCode($stop_code, $startsWith = '') {
    global $conn;
    $query = 'Select * from stops where (stop_code = :stop_code OR stop_code LIKE :stop_code2)';
    if ($startsWith != '')
        $query .= ' AND stop_name like :startsWith';
 
    debug($query, 'database');
    $query = $conn->prepare($query);