From 2c72c43c29b922867944c4e017bdf2bffee927a7 Mon Sep 17 00:00:00 2001
From: CaramelDunes <dev@carameldunes.fr>
Date: Thu, 24 Sep 2020 18:22:00 +0200
Subject: [PATCH] Add background location recording.

---
 android/app/src/main/AndroidManifest.xml |  6 ++++--
 lib/main.dart                            |  2 +-
 lib/{ => map}/flight_map.dart            |  2 +-
 lib/{ => map}/map_screen.dart            | 16 ++++++++--------
 lib/record_button.dart                   | 14 ++++++++++++++
 pubspec.lock                             |  7 +++++++
 pubspec.yaml                             |  6 +++++-
 7 files changed, 40 insertions(+), 13 deletions(-)
 rename lib/{ => map}/flight_map.dart (99%)
 rename lib/{ => map}/map_screen.dart (96%)

diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
index 557805d..a1f125e 100644
--- a/android/app/src/main/AndroidManifest.xml
+++ b/android/app/src/main/AndroidManifest.xml
@@ -4,11 +4,11 @@
     <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
-    <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION"/>
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
 
     <application
             android:name="io.flutter.app.FlutterApplication"
-            android:label="nofussppg"
+            android:label="No Fuss PPG"
             android:icon="@mipmap/launcher_icon">
         <activity
                 android:name=".MainActivity"
@@ -44,5 +44,7 @@
         <meta-data
                 android:name="flutterEmbedding"
                 android:value="2"/>
+
+        <service android:name="changjoopark.com.flutter_foreground_plugin.FlutterForegroundService"/>
     </application>
 </manifest>
diff --git a/lib/main.dart b/lib/main.dart
index 494d919..e3faaaf 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -1,5 +1,5 @@
 import 'package:flutter/material.dart';
-import 'map_screen.dart';
+import 'map/map_screen.dart';
 
 void main() {
   runApp(MyApp());
diff --git a/lib/flight_map.dart b/lib/map/flight_map.dart
similarity index 99%
rename from lib/flight_map.dart
rename to lib/map/flight_map.dart
index 8757767..9000914 100644
--- a/lib/flight_map.dart
+++ b/lib/map/flight_map.dart
@@ -6,7 +6,7 @@ import 'package:flutter_map/flutter_map.dart';
 
 import 'package:nofussppg/instruments_data_source.dart';
 import 'package:latlong/latlong.dart';
-import 'preset_layers.dart';
+import '../preset_layers.dart';
 
 class FlightMap extends StatefulWidget {
   final Stream<InstrumentsData> dataStream;
diff --git a/lib/map_screen.dart b/lib/map/map_screen.dart
similarity index 96%
rename from lib/map_screen.dart
rename to lib/map/map_screen.dart
index 303c518..8352ef0 100644
--- a/lib/map_screen.dart
+++ b/lib/map/map_screen.dart
@@ -7,15 +7,15 @@ import 'package:font_awesome_flutter/font_awesome_flutter.dart';
 import 'package:latlong/latlong.dart';
 import 'package:wakelock/wakelock.dart';
 
-import 'record_button.dart';
-import 'route_manager.dart';
+import '../record_button.dart';
+import '../route_manager.dart';
 import 'flight_map.dart';
-import 'instruments.dart';
-import 'instruments_data_source.dart';
-import 'over_cities_screen.dart';
-import 'navigation_data_source.dart';
-import 'navigation_info.dart';
-import 'settings_screen.dart';
+import '../instruments.dart';
+import '../instruments_data_source.dart';
+import '../over_cities_screen.dart';
+import '../navigation_data_source.dart';
+import '../navigation_info.dart';
+import '../settings_screen.dart';
 
 class MapScreen extends StatefulWidget {
   @override
diff --git a/lib/record_button.dart b/lib/record_button.dart
index 6bd47f9..0841fe9 100644
--- a/lib/record_button.dart
+++ b/lib/record_button.dart
@@ -2,6 +2,7 @@ import 'dart:async';
 import 'dart:io';
 
 import 'package:flutter/material.dart';
+import 'package:flutter_foreground_plugin/flutter_foreground_plugin.dart';
 import 'package:path_provider/path_provider.dart';
 
 import 'flight_recorder.dart';
@@ -53,6 +54,8 @@ class _RecordButtonState extends State<RecordButton> {
       _recorderSubscription = null;
       _flightRecorder.dispose();
       _flightRecorder = null;
+
+      FlutterForegroundPlugin.stopForegroundService();
     } else {
       getExternalStorageDirectory().then((value) {
         DateTime now = DateTime.now();
@@ -60,6 +63,7 @@ class _RecordButtonState extends State<RecordButton> {
             '${value.path}/${now.year}-${now.month}-${now.day}_${now.hour}-${now.minute}.csv';
 
         File outputFile = File(path);
+        print('Saving trace to $path');
 
         if (!outputFile.existsSync()) {
           _flightRecorder = FlightRecorder(outputFile);
@@ -71,7 +75,17 @@ class _RecordButtonState extends State<RecordButton> {
           _recorderSubscription = widget.dataSource.data.listen((event) {
             _flightRecorder.appendData(event);
           });
+        } else {
+          print('File already exists!');
         }
+
+        // Start a foreground service to keep receiving location updates when
+        // the app is in the background.
+        // Turns out I don't need any special background location library :-)
+        FlutterForegroundPlugin.startForegroundService(
+          title: "No Fuss PPG location service",
+          iconName: "ic_launcher",
+        );
       });
     }
   }
diff --git a/pubspec.lock b/pubspec.lock
index e5e1363..41c381d 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -146,6 +146,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.4.2"
+  flutter_foreground_plugin:
+    dependency: "direct main"
+    description:
+      name: flutter_foreground_plugin
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.5.0"
   flutter_image:
     dependency: transitive
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index 5775f10..64ae793 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -20,6 +20,7 @@ dependencies:
 
   cupertino_icons: ^0.1.3
 
+  flutter_foreground_plugin: ^0.5.0
 
   cached_network_image: ^2.3.1
 
@@ -38,5 +39,8 @@ flutter:
   uses-material-design: true
 
   assets:
-    - assets/offline_layers/oaci_vfr
+    - assets/offline_layers/oaci_vfr/8/
+    - assets/offline_layers/oaci_vfr/9/
+    - assets/offline_layers/oaci_vfr/10/
+    - assets/offline_layers/oaci_vfr/11/
     - assets/survol.png