something something login screen

lib/api/api.dart

@@ -9,6 +9,7 @@ part 'feed.dart';
 part 'item.dart';
 part 'group.dart';
 part 'feeds_group.dart';
+part 'cache.dart';
 part 'exceptions.dart';
 part 'util.dart';
 
@@ -16,19 +17,27 @@ part 'util.dart';
 /// https://github.com/dasmurphy/tinytinyrss-fever-plugin/blob/master/fever-api.md
 
 class FeverAPI {
-  String apiKey;
-  String apiUrl;
+  String? apiKey;
+  String? apiUrl;
 
   /// We use a shared HTTP client for all requests
   final _httpClient = http.Client();
 
-  FeverAPI({ required this.apiKey, required this.apiUrl });
+  late final APICache cache;
+
+  FeverAPI({ this.apiKey, this.apiUrl }) {
+    cache = APICache(this);
+  }
 
   static String generateApiKey(String username, String password) {
     var bytes = utf8.encode('$username:$password');
     return md5.convert(bytes).toString();
   }
 
+  bool loggedIn() {
+    return apiKey != null && apiUrl != null;
+  }
+
   APIRequestBuilder request() {
     return APIRequestBuilder(this, _httpClient);
   }
@@ -70,6 +79,8 @@ class APIRequestBuilder {
 
   /// Executes the API request and returns the JSON data
   Future<Map<String, dynamic>> fetch() async {
+    if (api.apiKey == null || api.apiUrl == null) throw Exception('API Key or API URL not set');
+
     final response = await _httpClient.post(generateUrl(), body: { 'api_key': api.apiKey });
     final data = jsonDecode((response).body);
     if (data['auth'] == 0) throw UnauthenticatedException(data['auth']);
@@ -80,48 +91,43 @@ class APIRequestBuilder {
   Future<void> execute() async {
     final data = await fetch();
 
-    List<Group> groups = [];
-    List<Feed> feeds = [];
-    List<Item> items = [];
-    List<FeedsGroup> feedsGroups = [];
-
     if (data.containsKey('groups')) {
-      groups = (data['groups'] as List<dynamic>)
+      List<Group> groups = (data['groups'] as List<dynamic>)
         .map((json) => Group.fromJSON(api, json))
         .toList();
+
+      for (var group in groups) {
+        api.cache.groups.set(group.id, group);
+      }
     }
 
     if (data.containsKey('feeds')) {
-      feeds = (data['feeds'] as List<dynamic>)
+      List<Feed> feeds = (data['feeds'] as List<dynamic>)
         .map((json) => Feed.fromJSON(api, json))
         .toList();
+
+      for (var feed in feeds) {
+        api.cache.feeds.set(feed.id, feed);
+      }
     }
 
     if (data.containsKey('items')) {
-      items = (data['items'] as List<dynamic>)
+      List<Item> items = (data['items'] as List<dynamic>)
         .map((json) => Item.fromJSON(api, json))
         .toList();
+
+      for (var item in items) {
+        api.cache.items.set(item.id, item);
+      }
     }
 
     if (data.containsKey('feeds_groups')) {
-      feedsGroups = (data['feeds_groups'] as List<dynamic>)
+      List<FeedsGroup> feedsGroups = (data['feeds_groups'] as List<dynamic>)
         .map((json) => FeedsGroup.fromJSON(api, json))
         .toList();
-    }
 
-    print(groups);
-    print(feeds);
-    print(items);
-    print(feedsGroups);
+      api.cache.feedsGroups.clear();
+      api.cache.feedsGroups.addAll(feedsGroups);
+    }
   }
 }
-
-void main() {
-  var api = FeverAPI(apiKey: "", apiUrl: "https://rss.amogus.cloud/api/fever.php");
-
-  api.request()
-    .withFeeds()
-    .withGroups()
-    .withItems()
-    .execute();
-}

lib/api/cache.dart

@@ -0,0 +1,48 @@
+part of fever_api;
+
+/// Caches items, feeds and groups
+class APICache {
+  final FeverAPI api;
+
+  late final ItemCache items;
+  late final ObjectCache<int, Feed> feeds;
+  late final ObjectCache<int, Group> groups;
+  final List<FeedsGroup> feedsGroups = [];
+
+  APICache(this.api) {
+    items = ItemCache(api);
+    feeds = ObjectCache(api);
+    groups = ObjectCache(api);
+  }
+}
+
+class ObjectCache<K, T> {
+  final FeverAPI api;
+  final Map<K, T> _items = {};
+
+  ObjectCache(this.api);
+
+  /// Returns an item from the cache, or null if it doesn't exist
+  T? get(K key) {
+    return _items.containsKey(key) ? _items[key] : null;
+  }
+
+  /// Returns a copy of the cache content
+  Map<K, T> getAll() {
+    return {..._items};
+  }
+
+  void set(K key, T value) {
+    _items[key] = value;
+  }
+}
+
+class ItemCache extends ObjectCache<int, Item> {
+  /// Get all items for a given feed
+  List<Item> getForFeed(int feed) {
+    if (api.cache.feeds.get(feed) == null) throw Exception('Feed $feed doesn\'t exist');
+    return _items.values.where((item) => item.feedId == feed).toList();
+  }
+
+  ItemCache(FeverAPI api) : super(api);
+}

lib/main.dart

@@ -1,115 +1,53 @@
+import 'package:feet/widgets/login_prompt.dart';
 import 'package:flutter/material.dart';
+import 'api/api.dart';
 
 void main() {
-  runApp(const MyApp());
+  runApp(MyApp());
 }
 
 class MyApp extends StatelessWidget {
-  const MyApp({super.key});
+  final api = FeverAPI();
+
+  MyApp({super.key});
 
-  // This widget is the root of your application.
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      title: 'Flutter Demo',
+      title: 'Feet',
       theme: ThemeData(
-        // This is the theme of your application.
-        //
-        // Try running your application with "flutter run". You'll see the
-        // application has a blue toolbar. Then, without quitting the app, try
-        // changing the primarySwatch below to Colors.green and then invoke
-        // "hot reload" (press "r" in the console where you ran "flutter run",
-        // or simply save your changes to "hot reload" in a Flutter IDE).
-        // Notice that the counter didn't reset back to zero; the application
-        // is not restarted.
-        primarySwatch: Colors.blue,
+        brightness: Brightness.light,
+        useMaterial3: true,
       ),
-      home: const MyHomePage(title: 'Flutter Demo Home Page'),
+      darkTheme: ThemeData(
+        brightness: Brightness.dark,
+        useMaterial3: true,
+      ),
+      themeMode: ThemeMode.system,
+      home: MyHomePage(title: 'Feet', api: api),
     );
   }
 }
 
 class MyHomePage extends StatefulWidget {
-  const MyHomePage({super.key, required this.title});
-
-  // This widget is the home page of your application. It is stateful, meaning
-  // that it has a State object (defined below) that contains fields that affect
-  // how it looks.
-
-  // This class is the configuration for the state. It holds the values (in this
-  // case the title) provided by the parent (in this case the App widget) and
-  // used by the build method of the State. Fields in a Widget subclass are
-  // always marked "final".
-
+  MyHomePage({ super.key, required this.title, required this.api });
   final String title;
+  final FeverAPI api;
 
   @override
   State<MyHomePage> createState() => _MyHomePageState();
 }
 
 class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
-
-  void _incrementCounter() {
-    setState(() {
-      // This call to setState tells the Flutter framework that something has
-      // changed in this State, which causes it to rerun the build method below
-      // so that the display can reflect the updated values. If we changed
-      // _counter without calling setState(), then the build method would not be
-      // called again, and so nothing would appear to happen.
-      _counter++;
-    });
-  }
-
   @override
   Widget build(BuildContext context) {
-    // This method is rerun every time setState is called, for instance as done
-    // by the _incrementCounter method above.
-    //
-    // The Flutter framework has been optimized to make rerunning build methods
-    // fast, so that you can just rebuild anything that needs updating rather
-    // than having to individually change instances of widgets.
     return Scaffold(
       appBar: AppBar(
-        // Here we take the value from the MyHomePage object that was created by
-        // the App.build method, and use it to set our appbar title.
         title: Text(widget.title),
       ),
-      body: Center(
-        // Center is a layout widget. It takes a single child and positions it
-        // in the middle of the parent.
-        child: Column(
-          // Column is also a layout widget. It takes a list of children and
-          // arranges them vertically. By default, it sizes itself to fit its
-          // children horizontally, and tries to be as tall as its parent.
-          //
-          // Invoke "debug painting" (press "p" in the console, choose the
-          // "Toggle Debug Paint" action from the Flutter Inspector in Android
-          // Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
-          // to see the wireframe for each widget.
-          //
-          // Column has various properties to control how it sizes itself and
-          // how it positions its children. Here we use mainAxisAlignment to
-          // center the children vertically; the main axis here is the vertical
-          // axis because Columns are vertical (the cross axis would be
-          // horizontal).
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            const Text(
-              'You have pushed the button this many times:',
-            ),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.headlineMedium,
-            ),
-          ],
-        ),
-      ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: _incrementCounter,
-        tooltip: 'Increment',
-        child: const Icon(Icons.add),
-      ), // This trailing comma makes auto-formatting nicer for build methods.
+      body: widget.api.loggedIn()
+        ? const Center(child: Text('Meep'))
+        : const Center(child: LoginPrompt()),
     );
   }
 }

lib/pages/login.dart

@@ -0,0 +1,39 @@
+import 'package:flutter/material.dart';
+
+class LoginPage extends StatefulWidget {
+  LoginPage({ super.key });
+
+  @override
+  State<LoginPage> createState() => _LoginPageState();
+}
+
+class _LoginPageState extends State<LoginPage> {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('Log in'),
+      ),
+      body: Column(
+        children: [
+          Container(
+            padding: const EdgeInsets.all(8.0),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: const [
+                Text("Fever compatible API URL"),
+                TextField(
+                  decoration: InputDecoration(
+                    border: OutlineInputBorder(),
+                    contentPadding: EdgeInsets.all(8.0),
+                    hintText: 'https://among-us.morbius.sus/api/fever.php',
+                  )
+                )
+              ],
+            ),
+          )
+        ],
+      ),
+    );
+  }
+}

lib/widgets/login_prompt.dart

@@ -0,0 +1,21 @@
+import 'package:flutter/material.dart';
+import 'package:feet/pages/login.dart';
+
+class LoginPrompt extends StatelessWidget {
+  const LoginPrompt({ super.key });
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      children: [
+        const Text('Please log in'),
+        ElevatedButton(
+          onPressed: () {
+            Navigator.push(context, MaterialPageRoute(builder: (context) => LoginPage()));
+          },
+          child: const Text('Log in')
+        ),
+      ],
+    );
+  }
+}