Added reverse geocoder

lib/activeFires.dart

@@ -33,14 +33,12 @@ class _ActiveFiresPageState extends State<ActiveFiresPage> {
         ? loc.description
         : 'Position: ${loc.lat}, ${loc.lon}';
     return new ListTile(
-        dense: false,
+        dense: true,
         leading: const Icon(Icons.location_on),
-        // trailing: const Icon(Icons.delete),
+        trailing: const Icon(Icons.notifications_off),
         title: new Text(desc),
         onLongPress: () {
-          _scaffoldKey.currentState.showSnackBar(new SnackBar(
-            content: new Text('Slide horizontally to delete this location'),
-          ));
+          showSnackMsg('Slide horizontally to delete this location');
         },
         onTap: () {
           const String km = '100';
@@ -61,6 +59,12 @@ class _ActiveFiresPageState extends State<ActiveFiresPage> {
         });
   }
 
+  void showSnackMsg(String msg) {
+    _scaffoldKey.currentState.showSnackBar(new SnackBar(
+      content: new Text(msg),
+    ));
+  }
+
   Widget _buildSavedLocations() {
     return new ListView.builder(
         padding: const EdgeInsets.all(16.0),
@@ -172,8 +176,7 @@ class _ActiveFiresPageState extends State<ActiveFiresPage> {
                   backColor: fires600),
             ])),
       floatingActionButton: globals.yourLocations.length > 0
-          ? Column(
-              mainAxisAlignment: MainAxisAlignment.end,
+          ? Column(mainAxisAlignment: MainAxisAlignment.end,
               // crossAxisAlignment: CrossAxisAlignment.center,
               children: <Widget>[
                   FloatingActionButton.extended(
@@ -210,11 +213,15 @@ class _ActiveFiresPageState extends State<ActiveFiresPage> {
 
   void _saveLocation(Future<BasicLocation> location) {
     location.then((newLocation) {
-      if (newLocation != BasicLocation.noLocation)
-        this.setState(() {
-          globals.yourLocations.add(newLocation);
-          persist();
-        });
+      if (newLocation != BasicLocation.noLocation) {
+        if (globals.yourLocations.contains(newLocation)) {
+          showSnackMsg('You have already added this location');
+        } else
+          this.setState(() {
+            globals.yourLocations.add(newLocation);
+            persist();
+          });
+      }
     });
   }
 }

lib/basicLocation.dart

@@ -1,25 +1,28 @@
 import 'package:flutter/material.dart';
 
-class BasicLocation  {
+class BasicLocation extends Comparable<BasicLocation> {
   final double lat;
   final double lon;
-  final String description;
+  String description;
 
-  static BasicLocation noLocation = new BasicLocation(lat:0.0, lon:0.0);
+  static BasicLocation noLocation = new BasicLocation(lat: 0.0, lon: 0.0);
 
   BasicLocation({@required this.lat, @required this.lon, this.description});
 
+  int compareTo(BasicLocation other) {
+    return lat == other.lat && lon == other.lon ? 1 : 0;
+  }
+
+  bool operator ==(o) => o is BasicLocation && o.lat == lat && o.lon == lon;
+
   BasicLocation.fromJson(Map<String, dynamic> json)
       : lat = json['lat'],
-      lon = json['lon'],
-      description = json['description']
-  ;
-
-  Map<String, dynamic> toJson() =>
-    {
-      'lat': lat,
-      'lon': lon,
-      'description': description,
-    };
+        lon = json['lon'],
+        description = json['description'];
 
+  Map<String, dynamic> toJson() => {
+        'lat': lat,
+        'lon': lon,
+        'description': description,
+      };
 }

lib/locationUtils.dart

@@ -3,28 +3,53 @@ import 'package:flutter/services.dart';
 import 'dart:async';
 import 'basicLocation.dart';
 import 'package:flutter/material.dart';
+import 'package:geocoder/geocoder.dart';
+import 'globals.dart' as globals;
 
-Future<BasicLocation> getUserLocation(GlobalKey<ScaffoldState> scaffoldKey) async {
-    // Platform messages may fail, so we use a try/catch PlatformException.
+Future<BasicLocation> getUserLocation(
+    GlobalKey<ScaffoldState> scaffoldKey) async {
+  // Platform messages may fail, so we use a try/catch PlatformException.
+  try {
+    Location _location = new Location();
+    Map<String, double> location = await _location.getLocation;
+    // print('location $location');
+
+    // It seems that the lib fails with lat/lon values
+    var basicLocation = new BasicLocation(
+        lat: location['latitude'], lon: location['longitude']);
+    var address;
     try {
-      Location _location = new Location();
-      Map<String, double> location = await _location.getLocation;
-      // print('location $location');
-
-      // It seems that the lib fails with lat/lon values
-      return new BasicLocation(
-          lat: location['latitude'], lon: location['longitude']);
-    } on PlatformException catch (e) {
-      if (e.code == 'PERMISSION_DENIED') {
-        scaffoldKey.currentState.showSnackBar(new SnackBar(
-          content: new Text('We don\'t have permission to get your location'),
-        ));
-      } else if (e.code == 'PERMISSION_DENIED_NEVER_ASK') {
+      address = await getReverseLocation(basicLocation);
+      basicLocation.description = address;
+    } catch (e) {
+      try {
+        address = await getReverseLocation(basicLocation, true);
+        basicLocation.description = address;
+      } catch (e) {
+        print('We cannot reverse geolocate');
       }
-      scaffoldKey.currentState.showSnackBar(new SnackBar(
-        content: new Text(
-            'I cannot get your current location. It\'s your ubication enabled?'),
-      ));
-      return BasicLocation.noLocation;
     }
+    return basicLocation;
+  } on PlatformException catch (e) {
+    if (e.code == 'PERMISSION_DENIED') {
+      scaffoldKey.currentState.showSnackBar(new SnackBar(
+        content: new Text('We don\'t have permission to get your location'),
+      ));
+    } else if (e.code == 'PERMISSION_DENIED_NEVER_ASK') {}
+    scaffoldKey.currentState.showSnackBar(new SnackBar(
+      content: new Text(
+          'I cannot get your current location. It\'s your ubication enabled?'),
+    ));
+    return BasicLocation.noLocation;
   }
+}
+
+Future<String> getReverseLocation(BasicLocation loc,
+    [bool external = false]) async {
+  final coordinates = new Coordinates(loc.lat, loc.lon);
+  var geocoder = external ? Geocoder.google(globals.gmapKey) : Geocoder.local;
+  var addresses = await geocoder.findAddressesFromCoordinates(coordinates);
+  var first = addresses.first;
+  print("${first.featureName} : ${first.addressLine}");
+  return first.addressLine;
+}