Working Sidebar added

Unauthorized error fix
Settings Page (initial)
Redesinged PlaylistView with Table

lib/components/Home.dart

@@ -1,15 +1,26 @@
+import 'package:cached_network_image/cached_network_image.dart';
 import 'package:flutter/material.dart' hide Page;
 import 'package:infinite_scroll_pagination/infinite_scroll_pagination.dart';
 import 'package:provider/provider.dart';
 import 'package:shared_preferences/shared_preferences.dart';
-import 'package:spotify/spotify.dart';
+import 'package:spotify/spotify.dart' hide Image;
 import 'package:spotube/components/CategoryCard.dart';
 import 'package:spotube/components/Login.dart';
 import 'package:spotube/components/Player.dart' as player;
+import 'package:spotube/components/Settings.dart';
+import 'package:spotube/models/LocalStorageKeys.dart';
 import 'package:spotube/models/sideBarTiles.dart';
 import 'package:spotube/provider/Auth.dart';
 import 'package:spotube/provider/SpotifyDI.dart';
 
+List<String> spotifyScopes = [
+  "user-library-read",
+  "user-library-modify",
+  "user-read-private",
+  "user-read-email",
+  "playlist-read-collaborative"
+];
+
 class Home extends StatefulWidget {
   const Home({Key? key}) : super(key: key);
 
@@ -21,6 +32,8 @@ class _HomeState extends State<Home> {
   final PagingController<int, Category> _pagingController =
       PagingController(firstPageKey: 0);
 
+  int _selectedIndex = 0;
+
   @override
   void initState() {
     super.initState();
@@ -28,24 +41,36 @@ class _HomeState extends State<Home> {
       try {
         Auth authProvider = context.read<Auth>();
         SharedPreferences localStorage = await SharedPreferences.getInstance();
-        String? clientId = localStorage.getString('client_id');
+        var clientId = localStorage.getString(LocalStorageKeys.clientId);
-        String? clientSecret = localStorage.getString('client_secret');
+        var clientSecret =
+            localStorage.getString(LocalStorageKeys.clientSecret);
+        var accessToken = localStorage.getString(LocalStorageKeys.accessToken);
+        var refreshToken =
+            localStorage.getString(LocalStorageKeys.refreshToken);
+        var expirationStr = localStorage.getString(LocalStorageKeys.expiration);
+        var expiration =
+            expirationStr != null ? DateTime.parse(expirationStr) : null;
 
         if (clientId != null && clientSecret != null) {
           SpotifyApi spotifyApi = SpotifyApi(
-            SpotifyApiCredentials(clientId, clientSecret, scopes: [
+            SpotifyApiCredentials(
-              "user-library-read",
+              clientId,
-              "user-library-modify",
+              clientSecret,
-              "user-read-private",
+              accessToken: accessToken,
-              "user-read-email",
+              refreshToken: refreshToken,
-              "playlist-read-collaborative"
+              expiration: expiration,
-            ]),
+              scopes: spotifyScopes,
+            ),
           );
           SpotifyApiCredentials credentials = await spotifyApi.getCredentials();
           if (credentials.accessToken?.isNotEmpty ?? false) {
             authProvider.setAuthState(
-              clientId: credentials.clientId,
+              clientId: clientId,
-              clientSecret: credentials.clientSecret,
+              clientSecret: clientSecret,
+              accessToken:
+                  credentials.accessToken, // accessToken can be new/refreshed
+              refreshToken: refreshToken,
+              expiration: credentials.expiration,
               isLoggedIn: true,
             );
           }
@@ -89,75 +114,85 @@ class _HomeState extends State<Home> {
     return Scaffold(
       body: Column(
         children: [
-          // Side Tab Bar
           Expanded(
             child: Row(
               children: [
-                Container(
+                NavigationRail(
-                  color: Colors.blueGrey[50],
+                  backgroundColor: Colors.blueGrey[50],
-                  constraints: const BoxConstraints(maxWidth: 230),
+                  destinations: sidebarTileList
-                  child: Material(
+                      .map((e) => NavigationRailDestination(
-                    type: MaterialType.transparency,
+                            icon: Icon(e.icon),
-                    child: Column(
+                            label: Text(
-                      children: [
+                              e.title,
-                        Flexible(
+                              style: const TextStyle(
-                          flex: 1,
+                                fontWeight: FontWeight.bold,
-                          // TabButtons
+                                fontSize: 16,
-                          child: Column(
-                            children: [
-                              ListTile(
-                                title: Text("Spotube",
-                                    style:
-                                        Theme.of(context).textTheme.headline4),
-                                leading:
-                                    const Icon(Icons.miscellaneous_services),
                               ),
-                              const SizedBox(height: 20),
-                              ...sidebarTileList
-                                  .map(
-                                    (sidebarTile) => ListTile(
-                                      title: Text(sidebarTile.title),
-                                      leading: Icon(sidebarTile.icon),
-                                      onTap: () {},
                             ),
-                                  )
+                          ))
                       .toList(),
-                            ],
+                  selectedIndex: _selectedIndex,
+                  onDestinationSelected: (value) => setState(() {
+                    _selectedIndex = value;
+                  }),
+                  extended: true,
+                  leading: Padding(
+                    padding: const EdgeInsets.only(left: 15),
+                    child: Row(children: [
+                      Image.asset(
+                        "assets/spotube-logo.png",
+                        height: 50,
+                        width: 50,
                       ),
+                      const SizedBox(
+                        width: 10,
                       ),
-                        // user name & settings
+                      Text("Spotube",
+                          style: Theme.of(context).textTheme.headline4),
+                    ]),
+                  ),
+                  trailing:
                       Consumer<SpotifyDI>(builder: (context, data, widget) {
                     return FutureBuilder<User>(
                       future: data.spotifyApi.me.get(),
                       builder: (context, snapshot) {
+                        var avatarImg = snapshot.data?.images?.last.url;
                         return Padding(
                           padding: const EdgeInsets.all(8.0),
                           child: Row(
-                                  mainAxisAlignment:
+                            mainAxisAlignment: MainAxisAlignment.spaceBetween,
-                                      MainAxisAlignment.spaceBetween,
                             children: [
+                              if (avatarImg != null)
+                                CircleAvatar(
+                                  child: CachedNetworkImage(
+                                    imageUrl: avatarImg,
+                                  ),
+                                ),
                               Text(
-                                      snapshot.data?.displayName ??
+                                snapshot.data?.displayName ?? "User's name",
-                                          "User's name",
                                 style: const TextStyle(
                                   fontWeight: FontWeight.bold,
                                 ),
                               ),
                               IconButton(
-                                        icon:
+                                  icon: const Icon(Icons.settings_outlined),
-                                            const Icon(Icons.settings_outlined),
+                                  onPressed: () {
-                                        onPressed: () {}),
+                                    Navigator.of(context)
+                                        .push(MaterialPageRoute(
+                                      builder: (context) {
+                                        return const Settings();
+                                      },
+                                    ));
+                                  }),
                             ],
                           ),
                         );
                       },
                     );
-                        })
+                  }),
-                      ],
-                    ),
-                  ),
                 ),
                 // contents of the spotify
+                if (_selectedIndex == 0)
                   Expanded(
                     child: Scrollbar(
                       child: PagedListView(
@@ -170,6 +205,7 @@ class _HomeState extends State<Home> {
                       ),
                     ),
                   ),
+                // player itself
               ],
             ),
           ),

lib/components/Login.dart

@@ -2,8 +2,10 @@ import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:shared_preferences/shared_preferences.dart';
-import 'package:spotify/spotify.dart';
+import 'package:spotify/spotify.dart' hide Image;
+import 'package:spotube/components/Home.dart';
 import 'package:spotube/helpers/server_ipc.dart';
+import 'package:spotube/models/LocalStorageKeys.dart';
 import 'package:spotube/provider/Auth.dart';
 
 class Login extends StatefulWidget {
@@ -12,38 +14,65 @@ class Login extends StatefulWidget {
 }
 
 class _LoginState extends State<Login> {
-  String client_id = "";
+  String clientId = "";
-  String client_secret = "";
+  String clientSecret = "";
   bool _fieldError = false;
+  String? accessToken;
+  String? refreshToken;
+  DateTime? expiration;
 
   handleLogin(Auth authState) async {
     try {
-      if (client_id == "" || client_secret == "") {
+      if (clientId == "" || clientSecret == "") {
         return setState(() {
           _fieldError = true;
         });
       }
-      final credentials = SpotifyApiCredentials(client_id, client_secret);
+      final credentials = SpotifyApiCredentials(clientId, clientSecret);
       final grant = SpotifyApi.authorizationCodeGrant(credentials);
-      final redirectUri = "http://localhost:4304/auth/spotify/callback";
+      const redirectUri = "http://localhost:4304/auth/spotify/callback";
-      final scopes = ["user-library-read", "user-library-modify"];
 
-      final authUri =
+      final authUri = grant.getAuthorizationUrl(Uri.parse(redirectUri),
-          grant.getAuthorizationUrl(Uri.parse(redirectUri), scopes: scopes);
+          scopes: spotifyScopes);
 
       final responseUri = await connectIpc(authUri.toString(), redirectUri);
+      SharedPreferences localStorage = await SharedPreferences.getInstance();
       if (responseUri != null) {
         final SpotifyApi spotify =
             SpotifyApi.fromAuthCodeGrant(grant, responseUri);
+        var credentials = await spotify.getCredentials();
+        if (credentials.accessToken != null) {
+          accessToken = credentials.accessToken;
+          await localStorage.setString(
+              LocalStorageKeys.accessToken, credentials.accessToken!);
+        }
+        if (credentials.refreshToken != null) {
+          refreshToken = credentials.refreshToken;
+          await localStorage.setString(
+              LocalStorageKeys.refreshToken, credentials.refreshToken!);
+        }
+        if (credentials.expiration != null) {
+          expiration = credentials.expiration;
+          await localStorage.setString(LocalStorageKeys.expiration,
+              credentials.expiration?.toString() ?? "");
+        }
       }
 
-      SharedPreferences localStorage = await SharedPreferences.getInstance();
+      await localStorage.setString(LocalStorageKeys.clientId, clientId);
-      await localStorage.setString('client_id', client_id);
+      await localStorage.setString(
-      await localStorage.setString('client_secret', client_secret);
+        LocalStorageKeys.clientSecret,
+        clientSecret,
+      );
       authState.setAuthState(
-          clientId: client_id, clientSecret: client_secret, isLoggedIn: true);
+        clientId: clientId,
+        clientSecret: clientSecret,
+        accessToken: accessToken,
+        refreshToken: refreshToken,
+        expiration: expiration,
+        isLoggedIn: true,
+      );
     } catch (e) {
-      print(e);
+      print("[Login.handleLogin] $e");
     }
   }
 
@@ -57,6 +86,11 @@ class _LoginState extends State<Login> {
               mainAxisAlignment: MainAxisAlignment.center,
               crossAxisAlignment: CrossAxisAlignment.center,
               children: [
+                Image.asset(
+                  "assets/spotube-logo.png",
+                  width: 400,
+                  height: 400,
+                ),
                 Text("Add your spotify credentials to get started",
                     style: Theme.of(context).textTheme.headline4),
                 const Text(
@@ -77,7 +111,7 @@ class _LoginState extends State<Login> {
                         ),
                         onChanged: (value) {
                           setState(() {
-                            client_id = value;
+                            clientId = value;
                           });
                         },
                       ),
@@ -91,7 +125,7 @@ class _LoginState extends State<Login> {
                         ),
                         onChanged: (value) {
                           setState(() {
-                            client_secret = value;
+                            clientSecret = value;
                           });
                         },
                       ),

lib/components/PlayerControls.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:mpv_dart/mpv_dart.dart';
+import 'package:spotube/helpers/zero-pad-num-str.dart';
 
 class PlayerControls extends StatefulWidget {
   final MPVPlayer player;
@@ -43,10 +44,6 @@ class _PlayerControlsState extends State<PlayerControls> {
     super.dispose();
   }
 
-  String zeroPadNumStr(int input) {
-    return input < 10 ? "0$input" : input.toString();
-  }
-
   @override
   Widget build(BuildContext context) {
     var totalDuration = Duration(seconds: widget.duration.toInt());

lib/components/PlaylistView.dart

@@ -1,8 +1,11 @@
+import 'dart:ui';
+
+import 'package:cached_network_image/cached_network_image.dart';
+import 'package:spotube/helpers/zero-pad-num-str.dart';
 import 'package:spotube/provider/Playback.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:spotify/spotify.dart';
-import 'package:spotube/components/TrackButton.dart';
 import 'package:spotube/provider/SpotifyDI.dart';
 
 class PlaylistView extends StatefulWidget {
@@ -13,6 +16,70 @@ class PlaylistView extends StatefulWidget {
 }
 
 class _PlaylistViewState extends State<PlaylistView> {
+  List<TableRow> trackToTableRow(List<Track> tracks) {
+    return tracks.asMap().entries.map((track) {
+      var thumbnailUrl = track.value.album?.images?.last.url;
+      var duration =
+          "${track.value.duration?.inMinutes.remainder(60)}:${zeroPadNumStr(track.value.duration?.inSeconds.remainder(60) ?? 0)}";
+      return (TableRow(
+        children: [
+          TableCell(
+              child: Text(
+            track.key.toString(),
+            textAlign: TextAlign.center,
+          )),
+          TableCell(
+            child: Row(
+              children: [
+                if (thumbnailUrl != null)
+                  CachedNetworkImage(
+                    imageUrl: thumbnailUrl,
+                    maxHeightDiskCache: 40,
+                    maxWidthDiskCache: 40,
+                  ),
+                const SizedBox(width: 10),
+                Flexible(
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(
+                        track.value.name ?? "",
+                        style: const TextStyle(
+                          fontWeight: FontWeight.bold,
+                          fontSize: 17,
+                        ),
+                        overflow: TextOverflow.ellipsis,
+                      ),
+                      Text(
+                        (track.value.artists ?? [])
+                            .map((e) => e.name)
+                            .join(", "),
+                        overflow: TextOverflow.ellipsis,
+                      ),
+                    ],
+                  ),
+                ),
+              ],
+            ),
+          ),
+          TableCell(
+            child: Text(
+              track.value.album?.name ?? "",
+              overflow: TextOverflow.ellipsis,
+            ),
+          ),
+          TableCell(
+            child: Text(
+              duration,
+              textAlign: TextAlign.center,
+              overflow: TextOverflow.ellipsis,
+            ),
+          )
+        ],
+      ));
+    }).toList();
+  }
+
   @override
   Widget build(BuildContext context) {
     return Consumer<SpotifyDI>(builder: (_, data, __) {
@@ -23,6 +90,8 @@ class _PlaylistViewState extends State<PlaylistView> {
                 .all(),
             builder: (context, snapshot) {
               List<Track> tracks = snapshot.data?.toList() ?? [];
+              TextStyle tableHeadStyle =
+                  const TextStyle(fontWeight: FontWeight.bold, fontSize: 16);
               return Column(
                 children: [
                   Row(
@@ -72,39 +141,49 @@ class _PlaylistViewState extends State<PlaylistView> {
                           ? const CircularProgressIndicator.adaptive()
                           : Expanded(
                               child: Scrollbar(
-                                isAlwaysShown: true,
+                                child: ListView(
-                                child: ListView.builder(
-                                    itemCount: tracks.length + 1,
-                                    itemBuilder: (context, index) {
-                                      if (index == 0) {
-                                        return Column(
                                   children: [
-                                            TrackButton(
+                                    SingleChildScrollView(
-                                                index: "#",
+                                      child: Table(
-                                                trackName: "Title",
+                                        columnWidths: const {
-                                                artists: ["Artist"],
+                                          0: FixedColumnWidth(40),
-                                                album: "Album",
+                                          1: FlexColumnWidth(),
-                                                playback_time: "Time"),
+                                          2: FlexColumnWidth(),
-                                            const Divider()
+                                          3: FixedColumnWidth(40),
+                                        },
+                                        children: [
+                                          TableRow(
+                                            children: [
+                                              TableCell(
+                                                  child: Text(
+                                                "#",
+                                                textAlign: TextAlign.center,
+                                                style: tableHeadStyle,
+                                              )),
+                                              TableCell(
+                                                  child: Text(
+                                                "Title",
+                                                style: tableHeadStyle,
+                                              )),
+                                              TableCell(
+                                                  child: Text(
+                                                "Album",
+                                                style: tableHeadStyle,
+                                              )),
+                                              TableCell(
+                                                  child: Text(
+                                                "Time",
+                                                textAlign: TextAlign.center,
+                                                style: tableHeadStyle,
+                                              )),
                                             ],
-                                        );
+                                          ),
-                                      }
+                                          ...trackToTableRow(tracks),
-                                      Track track = tracks[index - 1];
+                                        ],
-                                      return TrackButton(
+                                      ),
-                                        index: (index - 1).toString(),
+                                    ),
-                                        thumbnail_url: track
+                                  ],
-                                                .album?.images?.last.url ??
+                                ),
-                                            "https://i.scdn.co/image/ab67616d00001e02b993cba8ff7d0a8e9ee18d46",
-                                        trackName: track.name!,
-                                        artists: track.artists!
-                                            .map((e) => e.name!)
-                                            .toList(),
-                                        album: track.album!.name!,
-                                        playback_time: track.duration!.inMinutes
-                                            .toString(),
-                                        onTap: () {},
-                                      );
-                                    }),
                               ),
                             ),
                 ],

lib/components/Settings.dart

@@ -0,0 +1,46 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:spotube/provider/Auth.dart';
+
+class Settings extends StatefulWidget {
+  const Settings({Key? key}) : super(key: key);
+
+  @override
+  _SettingsState createState() => _SettingsState();
+}
+
+class _SettingsState extends State<Settings> {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        backgroundColor: Colors.white,
+        elevation: 0,
+        iconTheme: Theme.of(context).iconTheme,
+        title: const Text(
+          "Settings",
+        ),
+        centerTitle: true,
+        titleTextStyle: Theme.of(context).textTheme.headline4,
+      ),
+      body: Column(
+        children: [
+          Builder(builder: (context) {
+            var auth = context.read<Auth>();
+            return ElevatedButton(
+              child: const Text("Logout"),
+              onPressed: () async {
+                SharedPreferences localStorage =
+                    await SharedPreferences.getInstance();
+                await localStorage.clear();
+                auth.logout();
+                Navigator.of(context).pop();
+              },
+            );
+          })
+        ],
+      ),
+    );
+  }
+}

lib/components/TrackButton.dart

@@ -1,77 +0,0 @@
-import 'package:cached_network_image/cached_network_image.dart';
-import 'package:flutter/material.dart';
-
-class TrackButton extends StatefulWidget {
-  final String index;
-  final String trackName;
-  final List<String> artists;
-  final String album;
-  final String playback_time;
-  final String? thumbnail_url;
-  final void Function()? onTap;
-  TrackButton({
-    required this.index,
-    required this.trackName,
-    required this.artists,
-    required this.album,
-    required this.playback_time,
-    this.thumbnail_url,
-    this.onTap,
-  });
-
-  @override
-  _TrackButtonState createState() => _TrackButtonState();
-}
-
-class _TrackButtonState extends State<TrackButton> {
-  @override
-  Widget build(BuildContext context) {
-    return Material(
-      child: InkWell(
-        onTap: widget.onTap,
-        child: Ink(
-          padding: const EdgeInsets.all(10),
-          child: Row(
-            mainAxisAlignment: MainAxisAlignment.spaceBetween,
-            children: [
-              Row(
-                children: [
-                  Text(
-                    widget.index,
-                    style: const TextStyle(fontSize: 20),
-                  ),
-                  const SizedBox(width: 15),
-                  if (widget.thumbnail_url != null)
-                    CachedNetworkImage(
-                      imageUrl: widget.thumbnail_url!,
-                      maxHeightDiskCache: 50,
-                      maxWidthDiskCache: 50,
-                    ),
-                  const SizedBox(width: 15),
-                  Container(
-                    child: Column(
-                      crossAxisAlignment: CrossAxisAlignment.start,
-                      children: [
-                        Text(
-                          widget.trackName,
-                          textAlign: TextAlign.justify,
-                          style: const TextStyle(
-                              fontWeight: FontWeight.bold, fontSize: 17),
-                        ),
-                        Text(widget.artists.join(", "))
-                      ],
-                    ),
-                  ),
-                ],
-              ),
-              const SizedBox(width: 15),
-              Text(widget.album),
-              const SizedBox(width: 15),
-              Text(widget.playback_time)
-            ],
-          ),
-        ),
-      ),
-    );
-  }
-}

lib/helpers/zero-pad-num-str.dart

@@ -0,0 +1,3 @@
+String zeroPadNumStr(int input) {
+  return input < 10 ? "0$input" : input.toString();
+}

lib/main.dart

@@ -1,7 +1,9 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 import 'package:spotify/spotify.dart';
 import 'package:spotube/components/Home.dart';
+import 'package:spotube/models/LocalStorageKeys.dart';
 import 'package:spotube/provider/Auth.dart';
 import 'package:spotube/provider/Playback.dart';
 import 'package:spotube/provider/SpotifyDI.dart';
@@ -18,8 +20,36 @@ class MyApp extends StatelessWidget {
         ChangeNotifierProvider<Auth>(create: (context) => Auth()),
         ChangeNotifierProvider<SpotifyDI>(create: (context) {
           Auth authState = Provider.of<Auth>(context, listen: false);
-          return SpotifyDI(SpotifyApi(SpotifyApiCredentials(
+          return SpotifyDI(
-              authState.cliendId, authState.clientSecret)));
+            SpotifyApi(
+              SpotifyApiCredentials(
+                authState.clientId,
+                authState.clientSecret,
+                accessToken: authState.accessToken,
+                refreshToken: authState.refreshToken,
+                expiration: authState.expiration,
+                scopes: spotifyScopes,
+              ),
+              onCredentialsRefreshed: (credentials) async {
+                SharedPreferences localStorage =
+                    await SharedPreferences.getInstance();
+                localStorage.setString(
+                  LocalStorageKeys.refreshToken,
+                  credentials.refreshToken!,
+                );
+                localStorage.setString(
+                  LocalStorageKeys.accessToken,
+                  credentials.accessToken!,
+                );
+                localStorage.setString(
+                    LocalStorageKeys.clientId, credentials.clientId!);
+                localStorage.setString(
+                  LocalStorageKeys.clientSecret,
+                  credentials.clientSecret!,
+                );
+              },
+            ),
+          );
         }),
         ChangeNotifierProvider<Playback>(create: (context) => Playback()),
       ],

lib/models/LocalStorageKeys.dart

@@ -0,0 +1,7 @@
+abstract class LocalStorageKeys {
+  static String clientId = 'client_id';
+  static String clientSecret = 'client_secret';
+  static String accessToken = 'access_token';
+  static String refreshToken = 'refresh_token';
+  static String expiration = " expiration";
+}

lib/provider/Auth.dart

@@ -3,10 +3,17 @@ import 'package:flutter/cupertino.dart';
 class Auth with ChangeNotifier {
   String? _clientId;
   String? _clientSecret;
+  String? _accessToken;
+  String? _refreshToken;
+  DateTime? _expiration;
+
   bool _isLoggedIn = false;
 
-  String? get cliendId => _clientId;
+  String? get clientId => _clientId;
   String? get clientSecret => _clientSecret;
+  String? get accessToken => _accessToken;
+  String? get refreshToken => _refreshToken;
+  DateTime? get expiration => _expiration;
   bool get isLoggedIn => _isLoggedIn;
 
   void setAuthState({
@@ -14,17 +21,34 @@ class Auth with ChangeNotifier {
     bool safe = true,
     String? clientId,
     String? clientSecret,
-    String? refresh_token,
+    String? refreshToken,
-    String? access_token,
+    String? accessToken,
+    DateTime? expiration,
   }) {
     if (safe) {
       if (clientId != null) _clientId = clientId;
       if (clientSecret != null) _clientSecret = clientSecret;
       if (isLoggedIn != null) _isLoggedIn = isLoggedIn;
+      if (refreshToken != null) _refreshToken = refreshToken;
+      if (accessToken != null) _accessToken = accessToken;
+      if (expiration != null) _expiration = expiration;
     } else {
       _clientId = clientId;
       _clientSecret = clientSecret;
+      _accessToken = accessToken;
+      _refreshToken = refreshToken;
+      _expiration = expiration;
     }
     notifyListeners();
   }
+
+  logout() {
+    _clientId = null;
+    _clientSecret = null;
+    _accessToken = null;
+    _refreshToken = null;
+    _expiration = null;
+    _isLoggedIn = false;
+    notifyListeners();
+  }
 }

pubspec.yaml

@@ -68,8 +68,8 @@ flutter:
   uses-material-design: true
 
   # To add assets to your application, add an assets section, like this:
-  # assets:
+  assets:
-  #   - images/a_dot_burr.jpeg
+    - assets/
   #   - images/a_dot_ham.jpeg
 
   # An image asset can refer to one or more resolution-specific "variants", see