use osm for rev geo

wersharks · Aug 25, 2022 · 9e51aae · 9e51aae
1 parent b1bcdb8
commit 9e51aae
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diff --git a/lib/api/map_api.dart b/lib/api/map_api.dart
@@ -3,9 +3,12 @@ import 'dart:convert';
 
 import 'package:flutter/material.dart';
 import 'package:http/http.dart' as http;
+import 'package:mera_aadhar/fixtures/nearby_center_fixture.dart';
 import 'package:mera_aadhar/models/operator_model.dart';
 import 'package:mera_aadhar/models/operator_data_model.dart';
 import 'package:mera_aadhar/models/nearby_api_model.dart';
+import 'package:mera_aadhar/models/osm_reverse_geo.dart' as OSM;
+
 import 'package:mera_aadhar/fixtures/nearby_center_fixture.dart';
 
 import 'package:mera_aadhar/firebase/operator_db.dart';
@@ -36,6 +39,21 @@ Future<NearbyApiResponse> fetchMapdataFixture(String lat, String lon, int rad) a
   return NearbyApiFixture.dummyNearbyApi();
 }
 
+Future<String?> getAddressByLatLonNomin(double lat, double lng) async {
+  int zoom = 14;
+  String path = "https://nominatim.openstreetmap.org/reverse.php?format=json&lat=$lat&lon=$lng&zoom=$zoom";
+  final response = await http
+    .get(Uri.parse(path));
+
+  if (response.statusCode == 200) {
+    var res = OSM.OSMReverse.fromJson(jsonDecode(response.body));
+    return res.displayName;
+  } else {
+    return "Unknown Location";
+  }
+
+}
+
 Future<String?> getAddressByLatLon(double lat, double lng) async{
   GeoCode geoCode = GeoCode();
   Address address = await geoCode.reverseGeocoding(latitude: lat, longitude: lng);

diff --git a/lib/models/osm_reverse_geo.dart b/lib/models/osm_reverse_geo.dart
@@ -0,0 +1,92 @@
+class OSMReverse {
+  int? placeId;
+  String? licence;
+  String? osmType;
+  int? osmId;
+  String? lat;
+  String? lon;
+  String? displayName;
+  Address? address;
+  List<String>? boundingbox;
+
+  OSMReverse(
+      {this.placeId,
+      this.licence,
+      this.osmType,
+      this.osmId,
+      this.lat,
+      this.lon,
+      this.displayName,
+      this.address,
+      this.boundingbox});
+
+  OSMReverse.fromJson(Map<String, dynamic> json) {
+    placeId = json['place_id'];
+    licence = json['licence'];
+    osmType = json['osm_type'];
+    osmId = json['osm_id'];
+    lat = json['lat'];
+    lon = json['lon'];
+    displayName = json['display_name'];
+    address =
+        json['address'] != null ? new Address.fromJson(json['address']) : null;
+    boundingbox = json['boundingbox'].cast<String>();
+  }
+
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = new Map<String, dynamic>();
+    data['place_id'] = this.placeId;
+    data['licence'] = this.licence;
+    data['osm_type'] = this.osmType;
+    data['osm_id'] = this.osmId;
+    data['lat'] = this.lat;
+    data['lon'] = this.lon;
+    data['display_name'] = this.displayName;
+    if (this.address != null) {
+      data['address'] = this.address!.toJson();
+    }
+    data['boundingbox'] = this.boundingbox;
+    return data;
+  }
+}
+
+class Address {
+  String? hamlet;
+  String? county;
+  String? iSO31662Lvl6;
+  String? state;
+  String? iSO31662Lvl4;
+  String? country;
+  String? countryCode;
+
+  Address(
+      {this.hamlet,
+      this.county,
+      this.iSO31662Lvl6,
+      this.state,
+      this.iSO31662Lvl4,
+      this.country,
+      this.countryCode});
+
+  Address.fromJson(Map<String, dynamic> json) {
+    hamlet = json['hamlet'];
+    county = json['county'];
+    iSO31662Lvl6 = json['ISO3166-2-lvl6'];
+    state = json['state'];
+    iSO31662Lvl4 = json['ISO3166-2-lvl4'];
+    country = json['country'];
+    countryCode = json['country_code'];
+  }
+
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = new Map<String, dynamic>();
+    data['hamlet'] = this.hamlet;
+    data['county'] = this.county;
+    data['ISO3166-2-lvl6'] = this.iSO31662Lvl6;
+    data['state'] = this.state;
+    data['ISO3166-2-lvl4'] = this.iSO31662Lvl4;
+    data['country'] = this.country;
+    data['country_code'] = this.countryCode;
+    return data;
+  }
+}
diff --git a/lib/screens/operator_selection.dart b/lib/screens/operator_selection.dart
@@ -151,7 +151,7 @@ class _OperatorSelectionScreenState extends State<OperatorSelectionScreen> {
       var match = matches.elementAt(0);
       pinLocation =
           LatLng(double.parse(match.group(1)!), double.parse(match.group(2)!));
-      _locationText = (await getAddressByLatLon(
+      _locationText = (await getAddressByLatLonNomin(
           pinLocation.latitude, pinLocation.longitude))!;
     } else {
       _locationText = place.formattedAddress!;