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Refactor to use PostGIS database instead of gtfs tools
[busui.git] / include / db / trip-dao.inc.php
blob:a/include/db/trip-dao.inc.php -> blob:b/include/db/trip-dao.inc.php 
--- a/include/db/trip-dao.inc.php
+++ b/include/db/trip-dao.inc.php
@@ -1,132 +1,243 @@
 <?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 getTrip($tripID) {
-    /* def handle_json_GET_triprows(self, params):
-    """Return a list of rows from the feed file that are related to this
-    trip."""
-    schedule = self.server.schedule
-    try:
-      trip = schedule.GetTrip(params.get('trip', None))
-    except KeyError:
-      # if a non-existent trip is searched for, the return nothing
-      return
-    route = schedule.GetRoute(trip.route_id)
-    trip_row = dict(trip.iteritems())
-    route_row = dict(route.iteritems())
-    return [['trips.txt', trip_row], ['routes.txt', route_row]]
-    */
-}
-function getTripShape() {
-    /* def handle_json_GET_tripstoptimes(self, params):
-    schedule = self.server.schedule
-    try:
-      trip = schedule.GetTrip(params.get('trip'))
-    except KeyError:
-       # if a non-existent trip is searched for, the return nothing
-      return
-    time_stops = trip.GetTimeInterpolatedStops()
-    stops = []
-    times = []
-    for arr,ts,is_timingpoint in time_stops:
-      stops.append(StopToTuple(ts.stop))
-      times.append(arr)
-    return [stops, times]
-
-  def handle_json_GET_tripshape(self, params):
-    schedule = self.server.schedule
-    try:
-      trip = schedule.GetTrip(params.get('trip'))
-    except KeyError:
-       # if a non-existent trip is searched for, the return nothing
-      return
-    points = []
-    if trip.shape_id:
-      shape = schedule.GetShape(trip.shape_id)
-      for (lat, lon, dist) in shape.points:
-        points.append((lat, lon))
-    else:
-      time_stops = trip.GetTimeStops()
-      for arr,dep,stop in time_stops:
-        points.append((stop.stop_lat, stop.stop_lon))
-    return points*/
-}
-function tripStopTimes($tripID, $after_time, $limit) {
-    /*     rv = []
-
-    stoptimes = self.GetStopTimes()
-    # If there are no stoptimes [] is the correct return value but if the start
-    # or end are missing times there is no correct return value.
-    if not stoptimes:
-      return []
-    if (stoptimes[0].GetTimeSecs() is None or
-        stoptimes[-1].GetTimeSecs() is None):
-      raise ValueError("%s must have time at first and last stop" % (self))
-
-    cur_timepoint = None
-    next_timepoint = None
-    distance_between_timepoints = 0
-    distance_traveled_between_timepoints = 0
-
-    for i, st in enumerate(stoptimes):
-      if st.GetTimeSecs() != None:
-        cur_timepoint = st
-        distance_between_timepoints = 0
-        distance_traveled_between_timepoints = 0
-        if i + 1 < len(stoptimes):
-          k = i + 1
-          distance_between_timepoints += util.ApproximateDistanceBetweenStops(stoptimes[k-1].stop, stoptimes[k].stop)
-          while stoptimes[k].GetTimeSecs() == None:
-            k += 1
-            distance_between_timepoints += util.ApproximateDistanceBetweenStops(stoptimes[k-1].stop, stoptimes[k].stop)
-          next_timepoint = stoptimes[k]
-        rv.append( (st.GetTimeSecs(), st, True) )
-      else:
-        distance_traveled_between_timepoints += util.ApproximateDistanceBetweenStops(stoptimes[i-1].stop, st.stop)
-        distance_percent = distance_traveled_between_timepoints / distance_between_timepoints
-        total_time = next_timepoint.GetTimeSecs() - cur_timepoint.GetTimeSecs()
-        time_estimate = distance_percent * total_time + cur_timepoint.GetTimeSecs()
-        rv.append( (int(round(time_estimate)), st, False) )
-
-    return rv*/
-}
-
-function tripStartTime($tripID) {
-    $query = 'SELECT arrival_secs,departure_secs FROM stop_times WHERE trip_id=? ORDER BY stop_sequence LIMIT 1';
-    
-}
-
-function viaPoints($tripid, $stopid, $timingPointsOnly = false)
-{
-	global $APIurl;
-	$url = $APIurl . "/json/tripstoptimes?trip=" . $tripid;
-	$json = json_decode(getPage($url));
-	debug(print_r($json, true));
-	$stops = $json[0];
-	$times = $json[1];
-	$foundStop = false;
-	$viaPoints = Array();
-	foreach ($stops as $key => $row) {
-		if ($foundStop) {
-			if (!$timingPointsOnly || !startsWith($row[5], "Wj")) {
-				$viaPoints[] = Array(
-					"id" => $row[0],
-					"name" => $row[1],
-					"time" => $times[$key]
-				);
-			}
-		}
-		else {
-			if ($row[0] == $stopid) $foundStop = true;
-		}
-	}
-	return $viaPoints;
-}
-function viaPointNames($tripid, $stopid)
-{
-	$points = viaPoints($tripid, $stopid, true);
-	$pointNames = Array();
-	foreach ($points as $point) {
-		$pointNames[] = $point['name'];
-	}
-	return implode(", ", $pointNames);
-}
-?>
+    global $conn;
+    $query = 'Select * from trips
+	join routes on trips.route_id = routes.route_id
+	where trip_id =	:tripID
+	LIMIT 1';
+    debug($query, 'database');
+    $query = $conn->prepare($query);
+    $query->bindParam(':tripID', $tripID);
+    $query->execute();
+    if (!$query) {
+        databaseError($conn->errorInfo());
+
+        return Array();
+    }
+    return $query->fetch(PDO :: FETCH_ASSOC);
+}
+
+function getTripStops($tripID) {
+    global $conn;
+    $query = 'SELECT stops.stop_id, stop_name, ST_AsKML(position) as positionkml,
+	stop_sequence, trips.trip_id
+FROM stop_times
+join trips on trips.trip_id = stop_times.trip_id
+join stops on stops.stop_id = stop_times.stop_id
+WHERE trips.trip_id = :tripID ORDER BY stop_sequence';
+    debug($query, 'database');
+    $query = $conn->prepare($query);
+    $query->bindParam(':tripID', $tripID);
+    $query->execute();
+    if (!$query) {
+        databaseError($conn->errorInfo());
+        return Array();
+    }
+    return $query->fetchAll();
+}
+
+function getTripHasStop($tripID, $stopID) {
+    global $conn;
+    $query = 'SELECT stop_id
+FROM stop_times
+join trips on trips.trip_id = stop_times.trip_id
+WHERE trips.trip_id = :tripID and stop_times.stop_id = :stopID';
+    debug($query, 'database');
+    $query = $conn->prepare($query);
+    $query->bindParam(':tripID', $tripID);
+    $query->bindParam(':stopID', $stopID);
+    $query->execute();
+    if (!$query) {
+        databaseError($conn->errorInfo());
+        return Array();
+    }
+    return ($query->fetchColumn() > 0);
+}
+
+function getTripShape($tripID) {
+    global $conn;
+    $query = 'SELECT ST_AsKML(ST_MakeLine(geometry(a.shape_pt))) as the_route
+FROM (SELECT shapes.shape_id,shape_pt from shapes
+inner join trips on shapes.shape_id = trips.shape_id
+WHERE trips.trip_id = :tripID ORDER BY shape_pt_sequence) as a group by a.shape_id';
+    debug($query, 'database');
+    $query = $conn->prepare($query);
+    $query->bindParam(':tripID', $tripID);
+    $query->execute();
+    if (!$query) {
+        databaseError($conn->errorInfo());
+        return Array();
+    }
+    return $query->fetchColumn(0);
+}
+
+function getTripStopTimes($tripID) {
+    global $conn;
+    $query = 'SELECT stop_times.trip_id,trip_headsign,arrival_time,stop_times.stop_id
+    ,stop_lat,stop_lon,stop_name,stop_desc,stop_code,
+	stop_sequence,service_id,trips.route_id,route_short_name,route_long_name
+FROM stop_times
+join trips on trips.trip_id = stop_times.trip_id
+join routes on trips.route_id = routes.route_id
+join stops on stops.stop_id = stop_times.stop_id
+WHERE trips.trip_id = :tripID ORDER BY stop_sequence';
+    debug($query, 'database');
+    $query = $conn->prepare($query);
+    $query->bindParam(':tripID', $tripID);
+    $query->execute();
+    if (!$query) {
+        databaseError($conn->errorInfo());
+        return Array();
+    }
+    $stopTimes = $query->fetchAll();
+    return $stopTimes;
+}
+
+function getTripAtStop($tripID, $stop_sequence) {
+    global $conn;
+    foreach (getTripStopTimes($tripID) as $tripStop) {
+        if ($tripStop['stop_sequence'] == $stop_sequence)
+            return $tripStop;
+    }
+    return Array();
+}
+
+function getTripStartTime($tripID) {
+    global $conn;
+    $query = 'Select * from stop_times
+	where trip_id = :tripID
+	AND arrival_time IS NOT NULL
+	AND stop_sequence = \'1\'';
+    debug($query, 'database');
+    $query = $conn->prepare($query);
+    $query->bindParam(':tripID', $tripID);
+    $query->execute();
+    if (!$query) {
+        databaseError($conn->errorInfo());
+        return Array();
+    }
+    $r = $query->fetch(PDO :: FETCH_ASSOC);
+    return $r['arrival_time'];
+}
+
+function getTripEndTime($tripID) {
+    global $conn;
+    $query = 'SELECT trip_id,max(arrival_time) as arrival_time from stop_times
+	WHERE stop_times.arrival_time IS NOT NULL and trip_id = :tripID group by trip_id';
+    debug($query, 'database');
+    $query = $conn->prepare($query);
+    $query->bindParam(':tripID', $tripID);
+    $query->execute();
+    if (!$query) {
+        databaseError($conn->errorInfo());
+        return Array();
+    }
+    $r = $query->fetch(PDO :: FETCH_ASSOC);
+    return $r['arrival_time'];
+}
+
+function getTripStartingPoint($tripID) {
+    global $conn;
+    $query = 'SELECT stops.stop_id, stops.stop_name, stops.stop_desc 
+        from stop_times inner join stops on stop_times.stop_id =  stops.stop_id
+	WHERE trip_id = :tripID and stop_sequence = \'1\' limit 1';
+    debug($query, 'database');
+    $query = $conn->prepare($query);
+    $query->bindParam(':tripID', $tripID);
+    $query->execute();
+    if (!$query) {
+        databaseError($conn->errorInfo());
+        return Array();
+    }
+    $r = $query->fetch(PDO :: FETCH_ASSOC);
+    return $r;
+}
+
+function getTripDestination($tripID) {
+    global $conn;
+    $query = 'SELECT stops.stop_id, stops.stop_name, stops.stop_desc 
+        from stop_times inner join stops on stop_times.stop_id =  stops.stop_id
+	WHERE trip_id = :tripID order by stop_sequence desc limit 1';
+    debug($query, 'database');
+    $query = $conn->prepare($query);
+    $query->bindParam(':tripID', $tripID);
+    $query->execute();
+    if (!$query) {
+        databaseError($conn->errorInfo());
+        return Array();
+    }
+    $r = $query->fetch(PDO :: FETCH_ASSOC);
+    return $r;
+}
+
+function getActiveTrips($time='') {
+    global $conn;
+    if ($time == '') {
+        $time = current_time();
+    }
+    $query = 'Select distinct stop_times.trip_id, start_times.arrival_time as start_time, end_times.arrival_time as end_time from stop_times, (SELECT trip_id,arrival_time from stop_times WHERE stop_times.arrival_time IS NOT NULL
+AND stop_sequence = \'1\') as start_times, (SELECT trip_id,max(arrival_time) as arrival_time from stop_times WHERE stop_times.arrival_time IS NOT NULL group by trip_id) as end_times
+WHERE start_times.trip_id = end_times.trip_id AND stop_times.trip_id = end_times.trip_id AND :time > start_times.arrival_time  AND :time < end_times.arrival_time';
+    debug($query, 'database');
+    $query = $conn->prepare($query);
+    $query->bindParam(':time', $time);
+    $query->execute();
+    if (!$query) {
+        databaseError($conn->errorInfo());
+        return Array();
+    }
+    return $query->fetchAll();
+}
+function getTripLastStop($tripid, $time='') {
+    global $conn;
+    if ($time == '') {
+        $time = current_time();
+    }
+    $query = 'Select trip_id,stops.stop_id,stop_sequence,stop_code,stop_name,stop_lat,stop_lon,arrival_time,(arrival_time - :time::time) as time_diff  from stop_times inner join stops on stop_times.stop_id = stops.stop_id WHERE trip_id = :tripid  and arrival_time >= :time::time order by stop_sequence limit 2';
+    debug($query, 'database');
+    $query = $conn->prepare($query);
+    $query->bindParam(':time', $time);
+    $query->bindParam(':tripid', $tripid);
+    $query->execute();
+    if (!$query) {
+        databaseError($conn->errorInfo());
+        return Array();
+    }
+    return $query->fetchAll();
+}
+
+function viaPoints($tripID, $stop_sequence = '') {
+    global $conn;
+    $query = 'SELECT stops.stop_id, stop_name, arrival_time
+FROM stop_times join stops on stops.stop_id = stop_times.stop_id
+WHERE stop_times.trip_id = :tripID
+' . ($stop_sequence != '' ? ' AND stop_sequence > :stop_sequence ' : '') . ' ORDER BY stop_sequence';
+    debug($query, 'database');
+    $query = $conn->prepare($query);
+    if ($stop_sequence != '')
+        $query->bindParam(':stop_sequence', $stop_sequence);
+    $query->bindParam(':tripID', $tripID);
+    $query->execute();
+    if (!$query) {
+        databaseError($conn->errorInfo());
+        return Array();
+    }
+    return $query->fetchAll();
+}
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