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