add locations by search

lib/services/openstreetmap_api_service.dart

@@ -0,0 +1,24 @@
+import 'dart:convert';
+
+import 'package:wetter/models/location_model.dart';
+import 'package:http/http.dart' as http;
+
+class OpenStreetMapAPI {
+  static Future<List<LocationModel>> getLocationsFromSearch(
+      String search) async {
+    final response = await http.get(
+        Uri.parse(
+            'https://nominatim.openstreetmap.org/search.php?q=$search&format=jsonv2'),
+        headers: {"Accept": "application/json"});
+    if (response.statusCode == 200) {
+      List<LocationModel> locations = [];
+      List<dynamic> results = jsonDecode(response.body);
+      for (Map<String, dynamic> result in results) {
+        locations.add(LocationModel.fromJson(result));
+      }
+      return locations;
+    } else {
+      throw Exception('Failed to load weather data');
+    }
+  }
+}