ElPoyo
82 lines
2.4 KiB
Dart
82 lines
2.4 KiB
Dart
import 'dart:convert';
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import 'dart:io';
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void main() async {
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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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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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"routeModifiers": { "avoidTolls": true },
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"origin": { "address": "401 route du camping, 69850 Saint Martin en haut" },
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"destination": { "address": "25 Imp. du Puits du Suc, Saint-Martin-en-Haut, France" }
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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'] as String;
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print("Polyline found. Length: ${polyStr.length}");
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print("String: $polyStr");
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int index = 0, len = polyStr.length;
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int lat = 0, lng = 0;
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List poly = [];
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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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b = polyStr.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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b = polyStr.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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double finalLat = lat / 1e5;
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double finalLng = lng / 1e5;
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if (finalLat.abs() > 90.0 || finalLng.abs() > 180.0) {
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print("EXPLODED at index $index: $finalLat, $finalLng");
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break;
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}
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poly.add([finalLat, finalLng]);
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}
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print("Decode complete. Points:");
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for (var pt in poly) {
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print(pt);
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}
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} catch (e) {
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print("Error: $e");
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}
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}
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