3 files changed, 136 insertions, 0 deletions
diff --git a/lib/data/data_providers/app_launcher.dart b/lib/data/data_providers/app_launcher.dart
new file mode 100644
index 0000000..b0199d3
--- /dev/null
+++ b/lib/data/data_providers/app_launcher.dart
@@ -0,0 +1,108 @@
+import 'package:flutter_ics_homescreen/export.dart';
+import 'package:protos/protos.dart';
+
+class AppLauncher {
+  final Ref ref;
+
+  late ClientChannel aglShellChannel;
+  late AglShellManagerServiceClient aglShell;
+  late ClientChannel appLauncherChannel;
+  late AppLauncherClient appLauncher;
+
+  List<String> appStack = [ 'homescreen' ];
+
+  AppLauncher({required this.ref}) {
+    aglShellChannel =
+      ClientChannel('localhost',
+                    port: 14005,
+                    options: ChannelOptions(credentials: ChannelCredentials.insecure()));
+
+    aglShell = AglShellManagerServiceClient(aglShellChannel);
+
+    appLauncherChannel =
+      ClientChannel('localhost',
+                    port: 50052,
+                    options: ChannelOptions(credentials: ChannelCredentials.insecure()));
+    appLauncher = AppLauncherClient(appLauncherChannel);
+  }
+
+  run() async {
+    getAppList();
+
+    try {
+      var response = appLauncher.getStatusEvents(StatusRequest());
+      await for (var event in response) {
+        if (event.hasApp()) {
+          AppStatus app_status = event.app;
+          debugPrint("Got app status:");
+          debugPrint("$app_status");
+          if (app_status.hasId() && app_status.hasStatus()) {
+            if (app_status.status == "started") {
+              activateApp(app_status.id);
+            } else if (app_status.status == "terminated") {
+              deactivateApp(app_status.id);
+            }
+          }
+        }
+      }
+    } catch (e) {
+      print(e);
+    }
+  }
+
+  getAppList() async {
+    try {
+      var response = await appLauncher.listApplications(ListRequest());
+      List<AppLauncherInfo> apps = [];
+      for (AppInfo info in response.apps) {
+        debugPrint("Got app:");
+        debugPrint("$info");
+        // Existing icons are currently not usable, so leave blank for now
+        apps.add(AppLauncherInfo(id: info.id, name: info.name, icon: "", internal: false));
+      }
+      apps.sort((a, b) => a.name.compareTo(b.name));
+
+      // Add built-in app widgets
+      apps.insert(0, AppLauncherInfo(id: "clock", name: "Clock", icon: "clock.svg", internal: true));
+      apps.insert(0, AppLauncherInfo(id: "weather", name: "Weather", icon: "weather.svg", internal: true));
+
+      ref.read(appLauncherListProvider.notifier).update(apps);
+    } catch (e) {
+      print(e);
+    }
+  }
+
+  void startApp(String id) async {
+    await appLauncher.startApplication(StartRequest(id: id));
+  }
+
+  addAppToStack(String id) {
+    if (!appStack.contains(id)) {
+      appStack.add(id);
+    } else {
+      int current = appStack.indexOf(id);
+      if (current != (appStack.length - 1)) {
+        appStack.removeAt(current);
+        appStack.add(id);
+      }
+    }
+  }
+
+  activateApp(String id) async {
+    if (appStack.last != id) {
+      var req = ActivateRequest(appId: id);
+      var response = aglShell.activateApp(req);
+      addAppToStack(id);
+    }
+  }
+
+  deactivateApp(String id) async {
+    if (appStack.contains(id)) {
+      appStack.remove(id);
+      if (appStack.isNotEmpty) {
+        activateApp(appStack.last);
+      }
+    }
+  }
+
+}
diff --git a/lib/data/data_providers/app_launcher_info.dart b/lib/data/data_providers/app_launcher_info.dart
new file mode 100644
index 0000000..4d79cfe
--- /dev/null
+++ b/lib/data/data_providers/app_launcher_info.dart
@@ -0,0 +1,21 @@
+import 'package:flutter_ics_homescreen/export.dart';
+
+class AppLauncherInfo {
+  final String id;
+  final String name;
+  final String icon;
+  final bool internal;
+
+  AppLauncherInfo({required this.id, required this.name, required this.icon, required this.internal});
+}
+
+class AppLauncherList extends Notifier<List<AppLauncherInfo>> {
+  @override
+  List<AppLauncherInfo> build() {
+    return [];
+  }
+
+  void update(List<AppLauncherInfo> newAppList) {
+    state = newAppList;
+  }
+}
diff --git a/lib/data/data_providers/app_provider.dart b/lib/data/data_providers/app_provider.dart
index cfda370..1670eba 100644
--- a/lib/data/data_providers/app_provider.dart
+++ b/lib/data/data_providers/app_provider.dart
@@ -5,6 +5,7 @@ import 'package:flutter_ics_homescreen/data/data_providers/units_notifier.dart';
 import 'package:flutter_ics_homescreen/data/data_providers/audio_notifier.dart';
 import 'package:flutter_ics_homescreen/data/data_providers/users_notifier.dart';
 import 'package:flutter_ics_homescreen/data/data_providers/val_client.dart';
+import 'package:flutter_ics_homescreen/data/data_providers/app_launcher.dart';
 import 'package:flutter_ics_homescreen/export.dart';
 
 import '../models/users.dart';
@@ -43,6 +44,12 @@ final valClientProvider = Provider((ref) {
   return ValClient(config: config, ref: ref);
 });
 
+final appLauncherProvider = Provider((ref) {
+  return AppLauncher(ref: ref);
+});
+
+final appLauncherListProvider = NotifierProvider<AppLauncherList, List<AppLauncherInfo>>(AppLauncherList.new);
+
 final vehicleProvider =
     NotifierProvider<VehicleNotifier, Vehicle>(VehicleNotifier.new);