refactor: utilize appstream lib

.github/workflows/lint.yaml

@@ -9,6 +9,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          submodules: recursive
       - name: Install flutter dependencies
         run: |
           sudo apt-get update -y && sudo apt-get upgrade -y;

.github/workflows/linux-build.yaml

@@ -17,6 +17,8 @@ jobs:
             artifact_name: outlet-linux-arm64
     steps:
       - uses: actions/checkout@v4
+        with:
+          submodules: recursive
       - name: Install flutter dependencies
         run: |
           sudo apt-get update -y;

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "lib/appstream.dart"]
+	path = lib/appstream.dart
+	url = git@github.com:jardon/appstream.dart.git

analysis_options.yaml

@@ -0,0 +1,30 @@
+# This file configures the analyzer, which statically analyzes Dart code to
+# check for errors, warnings, and lints.
+#
+# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
+# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
+# invoked from the command line by running `flutter analyze`.
+
+# The following line activates a set of recommended lints for Flutter apps,
+# packages, and plugins designed to encourage good coding practices.
+include: package:flutter_lints/flutter.yaml
+
+linter:
+  # The lint rules applied to this project can be customized in the
+  # section below to disable rules from the `package:flutter_lints/flutter.yaml`
+  # included above or to enable additional rules. A list of all available lints
+  # and their documentation is published at https://dart.dev/lints.
+  #
+  # Instead of disabling a lint rule for the entire project in the
+  # section below, it can also be suppressed for a single line of code
+  # or a specific dart file by using the `// ignore: name_of_lint` and
+  # `// ignore_for_file: name_of_lint` syntax on the line or in the file
+  # producing the lint.
+  rules:
+    # avoid_print: false  # Uncomment to disable the `avoid_print` rule
+    # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule
+analyzer:
+  exclude:
+    - lib/appstream.dart
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

lib/backends/backend.dart

@@ -4,10 +4,11 @@ import 'dart:core';
 import 'package:outlet/backends/flatpak_backend.dart';
 import 'package:outlet/core/application.dart';
 import 'package:outlet/core/flatpak_application.dart';
+import 'package:outlet/appstream.dart/lib/appstream.dart';
 
 interface class Backend {
-  Map<String, Application> getInstalledPackages() {
-    return {};
+  List<String> getInstalledPackages() {
+    return [];
   }
 
   Future<Map<String, Application>> getAllRemotePackages() async {
@@ -44,22 +45,19 @@ class TestBackend implements Backend {
           _pickRandomCategories(categoriesList, 2, random);
 
       apps[appId] = FlatpakApplication(
-        name: "App $i",
+        name: {"C": "App $i"},
         id: appId,
-        icon: "lib/views/assets/flatpak-icon.svg",
-        description: "Description for App $i",
+        icons: const [AppstreamLocalIcon("lib/views/assets/flatpak-icon.svg")],
+        description: {"C": "Description for App $i"},
+        package: null,
+        summary: {"C": "Summary text for App $i"},
+        type: AppstreamComponentType.generic,
         categories: pickedCategories, // Randomly picked categories
         installed: random.nextBool(),
-        verified: random.nextBool(),
-        featured: random.nextBool(),
-        reviews: [
-          {
-            "title": "Review for App $i",
-            "rating": random.nextInt(5) +
-                1, // Random rating between 1 and 5 for review
-            "message": "This is a review message for App $i.",
-          }
+        custom: [
+          {'flathub::verification::verified': "${random.nextBool()}"}
         ],
+        featured: random.nextBool(),
       );
     }
   }
@@ -71,8 +69,8 @@ class TestBackend implements Backend {
   }
 
   @override
-  Map<String, Application> getInstalledPackages() {
-    return apps;
+  List<String> getInstalledPackages() {
+    return ['app-3', 'app-7'];
   }
 
   @override