feat: (broken) implement route map and address autocomplete widgets with associated infrastructure testing scripts

em2rp/scratch/test_google.dart

@@ -0,0 +1,93 @@
+import 'dart:convert';
+import 'dart:io';
+
+List<List<double>> decodePolyline(String encoded) {
+  List<List<double>> poly = [];
+  int index = 0, len = encoded.length;
+  int lat = 0, lng = 0;
+
+  while (index < len) {
+    int b, shift = 0, result = 0;
+    do {
+      if (index >= len) break;
+      b = encoded.codeUnitAt(index++) - 63;
+      result |= (b & 0x1f) << shift;
+      shift += 5;
+    } while (b >= 0x20);
+    int dlat = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
+    lat += dlat;
+
+    shift = 0;
+    result = 0;
+    do {
+      if (index >= len) break;
+      b = encoded.codeUnitAt(index++) - 63;
+      result |= (b & 0x1f) << shift;
+      shift += 5;
+    } while (b >= 0x20);
+    int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
+    lng += dlng;
+
+    poly.add([lat / 1e5, lng / 1e5]);
+  }
+  return poly;
+}
+
+void main() async {
+  final origin = "401 route du camping, 69850 Saint Martin en haut";
+  final destination = "Salle des fêtes, Orliénas";
+
+  final requestBody = jsonEncode({
+    "data": {
+      "origin": origin,
+      "destination": destination,
+      "vehicleTollCategory": 2
+    }
+  });
+
+  // Since we don't have the auth token, let's bypass auth if possible, or just call Google Maps directly!
+  // Wait, I can't call Google Maps directly without API_MAPS key.
+  // I will read .env file.
+  final envFile = File('functions/.env');
+  final lines = await envFile.readAsLines();
+  String apiKey = '';
+  for (var line in lines) {
+    if (line.startsWith('API_MAPS=')) {
+      apiKey = line.split('=')[1].replaceAll('"', '');
+    }
+  }
+
+  if (apiKey.isEmpty) {
+    print("API_MAPS not found");
+    return;
+  }
+
+  final url = 'https://routes.googleapis.com/directions/v2:computeRoutes';
+  final client = HttpClient();
+  final request = await client.postUrl(Uri.parse(url));
+  request.headers.set('Content-Type', 'application/json');
+  request.headers.set('X-Goog-Api-Key', apiKey);
+  request.headers.set('X-Goog-FieldMask', 'routes.distanceMeters,routes.duration,routes.polyline.encodedPolyline');
+  
+  final payload = jsonEncode({
+    "travelMode": "DRIVE",
+    "routingPreference": "TRAFFIC_AWARE",
+    "origin": { "address": origin },
+    "destination": { "address": destination }
+  });
+  
+  request.write(payload);
+  final response = await request.close();
+  final responseBody = await response.transform(utf8.decoder).join();
+  
+  try {
+    final json = jsonDecode(responseBody);
+    final routes = json['routes'] as List;
+    final polyStr = routes[0]['polyline']['encodedPolyline'];
+    print("POLYLINE_START");
+    print(polyStr);
+    print("POLYLINE_END");
+  } catch (e) {
+    print("Error: $e\n$responseBody");
+  }
+}