<?php
// transit/trip/live.php — الراكب يسأل عن موقع الباص الحي

require_once __DIR__ . '/../../transit/connect_app.php';

$tripId  = filterRequest('trip_id', 'int');
$routeId = filterRequest('route_id', 'int');

if (!$tripId && $routeId) {
    $st = $transit_con->prepare(
        "SELECT id FROM transit_trips WHERE route_id=? AND trip_date=? AND status='started' LIMIT 1"
    );
    $st->execute([$routeId, date('Y-m-d')]);
    $row = $st->fetch();
    $tripId = $row ? (int)$row['id'] : 0;
}

if (!$tripId) jsonError('No active trip found', 404);

$st = $transit_con->prepare(
    "SELECT t.id, t.org_id, t.status, t.delay_minutes, t.current_stop_seq, t.started_at,
            r.name_ar AS route_name, sc.departure_time, d.name AS driver_name
     FROM transit_trips t
     JOIN transit_routes    r  ON r.id  = t.route_id
     JOIN transit_schedules sc ON sc.id = t.schedule_id
     JOIN transit_drivers   d  ON d.id  = t.driver_id
     WHERE t.id=? LIMIT 1"
);
$st->execute([$tripId]);
$trip = $st->fetch();
if (!$trip) jsonError('Trip not found', 404);

// الراكب يحتاج عضوية نشطة في مؤسسة هذا الخط قبل رؤية موقع الباص
$chk = $transit_con->prepare(
    "SELECT id FROM transit_enrollments WHERE org_id=? AND passenger_id=? AND status='active' LIMIT 1"
);
$chk->execute([$trip['org_id'], $transit_user_id]);
if (!$chk->fetch()) jsonError('Active enrollment required', 403);

$stStops = $transit_con->prepare(
    "SELECT s.id, s.sequence, s.name_ar, s.latitude, s.longitude,
            s.geofence_radius, s.eta_offset_min, s.is_major
     FROM transit_stops s
     JOIN transit_trips t ON t.route_id = s.route_id
     WHERE t.id=? ORDER BY s.sequence ASC"
);
$stStops->execute([$tripId]);

jsonSuccess([
    'trip'         => $trip,
    'bus_position' => transitGetBusPosition($tripId),
    'stops'        => $stStops->fetchAll(),
]);