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

em2rp/scratch/test_api.dart

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+import 'dart:convert';
+import 'dart:io';
+import 'package:latlong2/latlong.dart';
+import '../lib/utils/polyline_utils.dart';
+
+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
+    }
+  });
+
+  print("Fetching route...");
+  final request = await HttpClient().postUrl(Uri.parse('https://googlemapscomputeroute-iarazmuuzq-od.a.run.app'));
+  request.headers.set('Content-Type', 'application/json');
+  request.write(requestBody);
+  
+  final response = await request.close();
+  final responseBody = await response.transform(utf8.decoder).join();
+  
+  print("Status: ${response.statusCode}");
+  
+  try {
+    final json = jsonDecode(responseBody);
+    final routes = json['routes'] as List;
+    for (int i = 0; i < routes.length; i++) {
+      final polyStr = routes[i]['encodedPolyline'];
+      print("Route $i polyline length: ${polyStr.length}");
+      final pts = safeDecodePolyline(polyStr);
+      print("Route $i points decoded: ${pts.length}");
+      if (pts.isNotEmpty) {
+        print("   Start: ${pts.first.latitude}, ${pts.first.longitude}");
+        print("   End:   ${pts.last.latitude}, ${pts.last.longitude}");
+      }
+    }
+  } catch (e) {
+    print("Error parsing: $e");
+    print(responseBody);
+  }
+}

em2rp/scratch/test_bad_depot.dart

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+import 'dart:convert';
+import 'dart:io';
+
+void main() async {
+  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('"', '');
+    }
+  }
+
+  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": "Mon depot" },
+    "destination": { "address": "25 Imp. du Puits du Suc, Saint-Martin-en-Haut, France" }
+  });
+  
+  request.write(payload);
+  final response = await request.close();
+  final responseBody = await response.transform(utf8.decoder).join();
+  
+  print(responseBody.length > 200 ? responseBody.substring(0, 200) : responseBody);
+}

em2rp/scratch/test_dart_decode.dart

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+import 'dart:convert';
+import 'dart:io';
+
+// Test la route Saint-Martin -> Paris (autoroute avec péage)
+// Pour vérifier que la polyline longue se décode correctement en Dart
+void main() async {
+  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('"', '').trim();
+    }
+  }
+
+  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",
+    "routeModifiers": { "avoidTolls": false },
+    "origin": { "address": "401 route du camping, 69850 Saint Martin en haut" },
+    "destination": { "address": "Paris, France" }
+  });
+  
+  request.write(payload);
+  final response = await request.close();
+  final responseBody = await response.transform(utf8.decoder).join();
+  
+  final json = jsonDecode(responseBody);
+  final routes = json['routes'] as List;
+  final polyStr = routes[0]['polyline']['encodedPolyline'] as String;
+  final dist = routes[0]['distanceMeters'];
+  
+  print('Distance: ${(dist/1000).round()} km');
+  print('Polyline longueur: ${polyStr.length} chars');
+  print('Polyline (50 premiers): ${polyStr.substring(0, 50)}');
+  
+  // Décoder
+  final pts = _decodePolyline(polyStr);
+  print('Points décodés: ${pts.length}');
+  
+  // Chercher les points invalides
+  var invalides = 0;
+  for (final pt in pts) {
+    if (pt[0].abs() > 90 || pt[1].abs() > 180) {
+      invalides++;
+      if (invalides <= 3) print('  *** INVALIDE: ${pt[0]}, ${pt[1]}');
+    }
+  }
+  
+  if (invalides == 0) {
+    print('✅ Tous les ${pts.length} points sont valides WGS84');
+    print('Premier: ${pts[0][0].toStringAsFixed(5)}, ${pts[0][1].toStringAsFixed(5)}');
+    print('Dernier: ${pts.last[0].toStringAsFixed(5)}, ${pts.last[1].toStringAsFixed(5)}');
+  } else {
+    print('❌ $invalides points invalides détectés');
+  }
+  
+  client.close();
+}
+
+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;
+
+    double finalLat = lat / 1e5;
+    double finalLng = lng / 1e5;
+    poly.add([finalLat, finalLng]);
+  }
+  return poly;
+}

em2rp/scratch/test_google.dart

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+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");
+  }
+}

em2rp/scratch/test_js.js

@@ -0,0 +1,45 @@
+const encoded = "qospGlrrB";
+
+function safeDecodePolyline(encoded) {
+    let index = 0, len = encoded.length;
+    let lat = 0, lng = 0;
+    const poly = [];
+
+    while (index < len) {
+        let b, shift = 0, result = 0;
+        do {
+            if (index >= len) break;
+            b = encoded.charCodeAt(index++) - 63;
+            result |= (b & 0x1f) << shift;
+            shift += 5;
+        } while (b >= 0x20);
+        let dlat = ((result & 1) !== 0 ? ~(result >> 1) : (result >> 1));
+        lat += dlat;
+
+        shift = 0;
+        result = 0;
+        do {
+            if (index >= len) break;
+            b = encoded.charCodeAt(index++) - 63;
+            result |= (b & 0x1f) << shift;
+            shift += 5;
+        } while (b >= 0x20);
+        let dlng = ((result & 1) !== 0 ? ~(result >> 1) : (result >> 1));
+        lng += dlng;
+
+        poly.push([lat / 1e5, lng / 1e5]);
+    }
+    return poly;
+}
+
+const pts = safeDecodePolyline(encoded);
+console.log("Decoded", pts.length, "points.");
+for(let i=0; i<5 && i<pts.length; i++) {
+    console.log(pts[i]);
+}
+if(pts.length > 5) {
+    console.log("...");
+    for(let i=pts.length-5; i<pts.length; i++) {
+        console.log(pts[i]);
+    }
+}

em2rp/scratch/test_js_api.js

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+const fs = require('fs');
+const https = require('https');
+
+async function main() {
+    const env = fs.readFileSync('functions/.env', 'utf8');
+    const apiKey = env.split('\n').find(l => l.startsWith('API_MAPS=')).split('=')[1].replace(/"/g, '').trim();
+
+    const data = JSON.stringify({
+        "travelMode": "DRIVE",
+        "routingPreference": "TRAFFIC_AWARE",
+        "origin": { "address": "401 route du camping, 69850 Saint Martin en haut" },
+        "destination": { "address": "Salle des fêtes, Orliénas" }
+    });
+
+    const options = {
+        hostname: 'routes.googleapis.com',
+        path: '/directions/v2:computeRoutes',
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/json',
+            'X-Goog-Api-Key': apiKey,
+            'X-Goog-FieldMask': 'routes.distanceMeters,routes.duration,routes.polyline.encodedPolyline',
+            'Content-Length': data.length
+        }
+    };
+
+    const req = https.request(options, res => {
+        let body = '';
+        res.on('data', d => body += d);
+        res.on('end', () => {
+            const json = JSON.parse(body);
+            const encoded = json.routes[0].polyline.encodedPolyline;
+            console.log("Encoded string length:", encoded.length);
+            
+            // decode
+            let index = 0, len = encoded.length;
+            let lat = 0, lng = 0;
+            const poly = [];
+            while (index < len) {
+                let b, shift = 0, result = 0;
+                do {
+                    b = encoded.charCodeAt(index++) - 63;
+                    result |= (b & 0x1f) << shift;
+                    shift += 5;
+                } while (b >= 0x20);
+                let dlat = ((result & 1) !== 0 ? ~(result >> 1) : (result >> 1));
+                lat += dlat;
+
+                shift = 0;
+                result = 0;
+                do {
+                    b = encoded.charCodeAt(index++) - 63;
+                    result |= (b & 0x1f) << shift;
+                    shift += 5;
+                } while (b >= 0x20);
+                let dlng = ((result & 1) !== 0 ? ~(result >> 1) : (result >> 1));
+                lng += dlng;
+
+                poly.push([lat / 1e5, lng / 1e5]);
+            }
+            
+            console.log("Decoded points:", poly.length);
+            for(let i=0; i<5; i++) console.log(poly[i]);
+            
+            // Search for exploding coordinates
+            for(let i=0; i<poly.length; i++) {
+                if (Math.abs(poly[i][0]) > 90 || Math.abs(poly[i][1]) > 180) {
+                    console.log("EXPLODED AT INDEX", i, "POINT:", poly[i]);
+                    break;
+                }
+            }
+        });
+    });
+
+    req.write(data);
+    req.end();
+}
+
+main();

em2rp/scratch/test_lambert.dart

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+import 'dart:convert';
+import 'dart:io';
+
+void main() async {
+  final origin = "401 route du camping, 69850 Saint Martin en haut";
+  final destination = "652431, 6853241"; // Lambert 93 example
+
+  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('"', '');
+    }
+  }
+
+  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();
+  print(response.statusCode);
+  print(responseBody);
+}

em2rp/scratch/test_lambert_origin.dart

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+import 'dart:convert';
+import 'dart:io';
+
+void main() async {
+  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('"', '');
+    }
+  }
+
+  final url = 'https://routes.googleapis.com/directions/v2:computeRoutes';
+  final client = HttpClient();
+  
+  // Test with origin = Lambert 93 coordinates
+  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": "652431, 6853241" },
+    "destination": { "address": "Salle des fêtes, Orliénas" }
+  });
+  
+  request.write(payload);
+  final response = await request.close();
+  final responseBody = await response.transform(utf8.decoder).join();
+  print(response.statusCode);
+  print(responseBody);
+}

em2rp/scratch/test_lambert_route.dart

@@ -0,0 +1,34 @@
+import 'dart:convert';
+import 'dart:io';
+
+void main() async {
+  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('"', '');
+    }
+  }
+
+  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": "401 route du camping, 69850 Saint Martin en haut" },
+    "destination": { "address": "652431, 6853241" }
+  });
+  
+  request.write(payload);
+  final response = await request.close();
+  final responseBody = await response.transform(utf8.decoder).join();
+  
+  print(responseBody);
+}

em2rp/scratch/test_ulys.js

@@ -0,0 +1,144 @@
+/**
+ * Test final :
+ * 1. 03003 → 03087 (tarif ?)
+ * 2. Google travelAdvisory.tollInfo pour Saint-Martin → Grenoble
+ * 3. Identifier pourquoi VOREPPE n'est pas détecté par Ulys
+ */
+const axios = require('axios');
+const polylineLib = require('@mapbox/polyline');
+const fs = require('fs');
+const path = require('path');
+
+let API_MAPS = '';
+const envContent = fs.readFileSync(path.join(__dirname, '.env'), 'utf-8');
+for (const line of envContent.split('\n')) {
+  const m = line.match(/^API_MAPS=(.+)/);
+  if (m) API_MAPS = m[1].trim().replace(/"/g, '');
+}
+
+async function testRate(vehicleCategory, tollPassages, label) {
+  try {
+    const res = await axios.post(
+      'https://api-ulys.azure-api.net/tollstation/v1/rate',
+      { vehicleCategory: String(vehicleCategory), paymentOption: 2, tollPassages },
+      { headers: { 'Content-Type': 'application/json' }, timeout: 8000 }
+    );
+    const data = res.data;
+    const total = Array.isArray(data) ? data.reduce((s, d) => s + (d.price || 0), 0) : 0;
+    const comment = Array.isArray(data) && data[0] ? (data[0].comments || []).join(', ') : '';
+    console.log(`  [cl${vehicleCategory}] ${label}: ${total}€ ${comment ? '('+comment+')' : ''}`);
+    return total;
+  } catch (e) {
+    console.log(`  ERROR: ${e.message}`);
+    return 0;
+  }
+}
+
+const now = new Date().toISOString();
+
+async function main() {
+  console.log('=== TEST 1: Combinations de gares A43+A48 pour Saint-Martin → Grenoble ===\n');
+  
+  // 03003 → 03087 (Isle d'Abeau → Voreppe) - système fermé?
+  await testRate(1, [
+    { toll: { operatorId: '03', tollId: '003' }, passageDate: now },
+    { toll: { operatorId: '03', tollId: '087' }, passageDate: now }
+  ], '03003→03087 (Isle d\'Abeau→Voreppe)');
+  await testRate(2, [
+    { toll: { operatorId: '03', tollId: '003' }, passageDate: now },
+    { toll: { operatorId: '03', tollId: '087' }, passageDate: now }
+  ], '03003→03087');
+
+  // Essayer toutes les paires gares sur A48
+  const a48gates = [
+    { op: '03', toll: '083', name: 'MOIRANS NORD' },
+    { op: '03', toll: '084', name: 'MOIRANS' },
+    { op: '03', toll: '085', name: 'RIVES' },
+    { op: '03', toll: '086', name: 'VOIRON' },
+    { op: '03', toll: '087', name: 'VOREPPE' },
+    { op: '03', toll: '091', name: 'CHATUZANGE' },
+    { op: '03', toll: '092', name: 'BAUME HOSTUN' },
+    { op: '03', toll: '093', name: 'ST MARCELLIN' },
+    { op: '03', toll: '094', name: 'VINAY' },
+    { op: '03', toll: '095', name: 'TULLINS' },
+  ];
+
+  console.log('\n03003 (Isle d\'Abeau) → toutes les gares A48:');
+  for (const g of a48gates) {
+    await testRate(2, [
+      { toll: { operatorId: '03', tollId: '003' }, passageDate: now },
+      { toll: { operatorId: g.op, tollId: g.toll }, passageDate: now }
+    ], `03003→${g.toll} ${g.name}`);
+  }
+
+  console.log('\n=== TEST 2: Google Routes API - travelAdvisory.tollInfo ===\n');
+  
+  const res = await axios.post('https://routes.googleapis.com/directions/v2:computeRoutes', {
+    travelMode: 'DRIVE',
+    routingPreference: 'TRAFFIC_AWARE',
+    routeModifiers: { avoidTolls: false },
+    origin: { address: '25 Impasse du Puits du Suc, Saint-Martin-en-Haut, France' },
+    destination: { address: 'Grenoble, France' },
+  }, {
+    headers: {
+      'Content-Type': 'application/json',
+      'X-Goog-Api-Key': API_MAPS,
+      'X-Goog-FieldMask': 'routes.distanceMeters,routes.duration,routes.polyline.encodedPolyline,routes.travelAdvisory.tollInfo',
+    },
+    timeout: 15000,
+  });
+  
+  const r = res.data.routes[0];
+  console.log(`Distance: ${Math.round(r.distanceMeters/1000)}km`);
+  console.log(`travelAdvisory:`, JSON.stringify(r.travelAdvisory, null, 2));
+
+  console.log('\n=== TEST 3: Diagnostiquer pourquoi VOREPPE n\'est pas dans Ulys ===\n');
+  
+  // Récupérer la polyline complète et identifier les points proches de VOREPPE
+  const poly = r.polyline.encodedPolyline;
+  const coords = polylineLib.decode(poly, 5);
+  
+  // VOREPPE BARRIERE: 45.28323°N, 5.622°E
+  const VOREPPE = [45.28323, 5.622];
+  
+  let minDist = Infinity;
+  let closestIdx = -1;
+  for (let i = 0; i < coords.length; i++) {
+    const [lat, lng] = coords[i];
+    const dist = Math.sqrt(Math.pow(lat - VOREPPE[0], 2) + Math.pow(lng - VOREPPE[1], 2));
+    if (dist < minDist) {
+      minDist = dist;
+      closestIdx = i;
+    }
+  }
+  
+  const minDistKm = minDist * 111; // approximation 1° ≈ 111km
+  console.log(`Point le plus proche de VOREPPE (45.283, 5.622):`);
+  console.log(`  Index ${closestIdx}/${coords.length-1}: ${JSON.stringify(coords[closestIdx])}`);
+  console.log(`  Distance: ${minDistKm.toFixed(2)} km`);
+  
+  if (minDistKm > 2) {
+    console.log(`  -> Le tracé NE PASSE PAS par VOREPPE (trop loin: ${minDistKm.toFixed(1)}km)`);
+    console.log('  -> Google route par une autre voie que A48 vers Grenoble!');
+  } else {
+    console.log(`  -> Le tracé passe PRÈS de VOREPPE (${minDistKm.toFixed(2)}km)`);
+  }
+  
+  // Vérifier aussi ST QUENTIN (03001): 45.641°N, 5.119°E (d'après le CSV)
+  const STQUENTIN001 = [45.641, 5.119];
+  let minDist2 = Infinity;
+  for (const [lat, lng] of coords) {
+    const d = Math.sqrt(Math.pow(lat - STQUENTIN001[0], 2) + Math.pow(lng - STQUENTIN001[1], 2));
+    if (d < minDist2) minDist2 = d;
+  }
+  console.log(`\nDistance du tracé à ST QUENTIN 03001 (45.641, 5.119): ${(minDist2*111).toFixed(2)} km`);
+  
+  // Regarder la zone géographique couverte par la route
+  const lats = coords.map(c => c[0]);
+  const lngs = coords.map(c => c[1]);
+  console.log(`\nBounding box de la route:`);
+  console.log(`  Lat: ${Math.min(...lats).toFixed(4)} → ${Math.max(...lats).toFixed(4)}`);
+  console.log(`  Lng: ${Math.min(...lngs).toFixed(4)} → ${Math.max(...lngs).toFixed(4)}`);
+}
+
+main().catch(console.error);

em2rp/scratch/test_user_route.dart

@@ -0,0 +1,81 @@
+import 'dart:convert';
+import 'dart:io';
+
+void main() async {
+  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('"', '');
+    }
+  }
+
+  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",
+    "routeModifiers": { "avoidTolls": true },
+    "origin": { "address": "401 route du camping, 69850 Saint Martin en haut" },
+    "destination": { "address": "25 Imp. du Puits du Suc, Saint-Martin-en-Haut, France" }
+  });
+  
+  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'] as String;
+    
+    print("Polyline found. Length: ${polyStr.length}");
+    print("String: $polyStr");
+    
+    int index = 0, len = polyStr.length;
+    int lat = 0, lng = 0;
+    List poly = [];
+    while (index < len) {
+      int b, shift = 0, result = 0;
+      do {
+        b = polyStr.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 {
+        b = polyStr.codeUnitAt(index++) - 63;
+        result |= (b & 0x1f) << shift;
+        shift += 5;
+      } while (b >= 0x20);
+      int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
+      lng += dlng;
+
+      double finalLat = lat / 1e5;
+      double finalLng = lng / 1e5;
+      
+      if (finalLat.abs() > 90.0 || finalLng.abs() > 180.0) {
+        print("EXPLODED at index $index: $finalLat, $finalLng");
+        break;
+      }
+      poly.add([finalLat, finalLng]);
+    }
+    print("Decode complete. Points:");
+    for (var pt in poly) {
+      print(pt);
+    }
+  } catch (e) {
+    print("Error: $e");
+  }
+}

em2rp/scratch/test_user_route.js.deps

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+file:///C:/Users/paulf/flutter/bin/cache/dart-sdk/lib/libraries.json
+file:///C:/src/EM2RP/em2rp/.dart_tool/package_config.json
+file:///C:/src/EM2RP/em2rp/scratch/test_user_route.dart
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