Add basic friends list

.gitignore

@@ -0,0 +1,44 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+/build/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release

.metadata

@@ -0,0 +1,33 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled.
+
+version:
+  revision: 2ad6cd72c040113b47ee9055e722606a490ef0da
+  channel: stable
+
+project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: 2ad6cd72c040113b47ee9055e722606a490ef0da
+      base_revision: 2ad6cd72c040113b47ee9055e722606a490ef0da
+    - platform: android
+      create_revision: 2ad6cd72c040113b47ee9055e722606a490ef0da
+      base_revision: 2ad6cd72c040113b47ee9055e722606a490ef0da
+    - platform: linux
+      create_revision: 2ad6cd72c040113b47ee9055e722606a490ef0da
+      base_revision: 2ad6cd72c040113b47ee9055e722606a490ef0da
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'

lib/api_client.dart

@@ -11,12 +11,20 @@ class ApiClient {
   static const String userIdKey = "userId";
   static const String machineIdKey = "machineId";
   static const String tokenKey = "token";
+  static const String passwordKey = "password";
 
   final AuthenticationData _authenticationData;
 
+  String get userId => _authenticationData.userId;
+
   const ApiClient({required AuthenticationData authenticationData}) : _authenticationData = authenticationData;
 
-  static Future<AuthenticationData> tryLogin({required String username, required String password, bool rememberMe=false}) async {
+  static Future<AuthenticationData> tryLogin({
+    required String username,
+    required String password,
+    bool rememberMe=true,
+    bool rememberPass=false
+  }) async {
     final body = {
       "username": username,
       "password": password,
@@ -24,21 +32,21 @@ class ApiClient {
       "secretMachineId": const Uuid().v4(),
     };
     final response = await http.post(
-        Uri.parse("${Config.apiBaseUrl}/api/UserSessions"),
+        buildFullUri("/UserSessions"),
         headers: {"Content-Type": "application/json"},
         body: jsonEncode(body));
     if (response.statusCode == 400) {
       throw "Invalid Credentials";
-    } else if (response.statusCode != 200) {
-      throw "Unknown Error${kDebugMode ? ": ${response.statusCode}|${response.body}" : ""}";
-    }
+    } 
+    checkResponse(response);
 
-    final authData = AuthenticationData.fromJson(jsonDecode(response.body));
+    final authData = AuthenticationData.fromMap(jsonDecode(response.body));
     if (authData.isAuthenticated) {
       const FlutterSecureStorage storage = FlutterSecureStorage();
       await storage.write(key: userIdKey, value: authData.userId);
       await storage.write(key: machineIdKey, value: authData.secretMachineId);
       await storage.write(key: tokenKey, value: authData.token);
+      if (rememberPass) await storage.write(key: passwordKey, value: password);
     }
     return authData;
   }
@@ -48,46 +56,67 @@ class ApiClient {
     String? userId = await storage.read(key: userIdKey);
     String? machineId = await storage.read(key: machineIdKey);
     String? token = await storage.read(key: tokenKey);
+    String? password = await storage.read(key: passwordKey);
 
-    if (userId == null || machineId == null || token == null) {
+    if (userId == null || machineId == null) {
       return AuthenticationData.unauthenticated();
     }
 
-    final response = await http.get(Uri.parse("${Config.apiBaseUrl}/api/users/$userId"), headers: {
-      "Authorization": "neos $userId:$token"
-    });
-    if (response.statusCode == 200) {
-      return AuthenticationData(userId: userId, token: token, secretMachineId: machineId, isAuthenticated: true);
+    if (token != null) {
+      final response = await http.get(buildFullUri("/users/$userId"), headers: {
+        "Authorization": "neos $userId:$token"
+      });
+      if (response.statusCode == 200) {
+        return AuthenticationData(userId: userId, token: token, secretMachineId: machineId, isAuthenticated: true);
+      }
+    }
+
+    if (password != null) {
+      try {
+        userId = userId.startsWith("U-") ? userId.replaceRange(0, 2, "") : userId;
+        final loginResult = await tryLogin(username: userId, password: password, rememberPass: true);
+        if (loginResult.isAuthenticated) return loginResult;
+      } catch (_) {
+        // We don't need to notify the user if the cached login fails behind the scenes, so just ignore any exceptions.
+      }
     }
     return AuthenticationData.unauthenticated();
   }
+  
+  static void checkResponse(http.Response response) {
+    if (response.statusCode != 200) {
+      throw "Unknown Error${kDebugMode ? ": ${response.statusCode}|${response.body}" : ""}";
+    }
+  }
 
   Map<String, String> get authorizationHeader => {
     "Authorization": "neos ${_authenticationData.userId}:${_authenticationData.token}"
   };
 
-  Future<http.Response> get(Uri uri, {Map<String, String>? headers}) {
+  static Uri buildFullUri(String path) => Uri.parse("${Config.apiBaseUrl}/api$path");
+
+  Future<http.Response> get(String path, {Map<String, String>? headers}) {
     headers ??= {};
     headers.addAll(authorizationHeader);
-    return http.get(uri, headers: headers);
+    return http.get(buildFullUri(path), headers: headers);
   }
 
-  Future<http.Response> post(Uri uri, {Object? body, Map<String, String>? headers}) {
+  Future<http.Response> post(String path, {Object? body, Map<String, String>? headers}) {
     headers ??= {};
     headers["Content-Type"] = "application/json";
     headers.addAll(authorizationHeader);
-    return http.post(uri, headers: headers, body: body);
+    return http.post(buildFullUri(path), headers: headers, body: body);
   }
 
-  Future<http.Response> put(Uri uri, {Object? body, Map<String, String>? headers}) {
+  Future<http.Response> put(String path, {Object? body, Map<String, String>? headers}) {
     headers ??= {};
     headers.addAll(authorizationHeader);
-    return http.put(uri, headers: headers, body: body);
+    return http.put(buildFullUri(path), headers: headers, body: body);
   }
 
-  Future<http.Response> delete(Uri uri, {Map<String, String>? headers}) {
+  Future<http.Response> delete(String path, {Map<String, String>? headers}) {
     headers ??= {};
     headers.addAll(authorizationHeader);
-    return http.delete(uri, headers: headers);
+    return http.delete(buildFullUri(path), headers: headers);
   }
 }

lib/apis/friend_api.dart

@@ -0,0 +1,19 @@
+
+import 'dart:convert';
+
+import 'package:contacts_plus/api_client.dart';
+import 'package:contacts_plus/models/friend.dart';
+
+class FriendApi {
+
+  const FriendApi({required apiClient}) : _apiClient = apiClient;
+
+  final ApiClient _apiClient;
+
+  Future<Iterable<Friend>> getFriendsList() async {
+    final response = await _apiClient.get("/users/${_apiClient.userId}/friends");
+    ApiClient.checkResponse(response);
+    final data = jsonDecode(response.body) as List;
+    return data.map((e) => Friend.fromMap(e));
+  }
+}

lib/apis/friends_api.dart

@@ -1,9 +0,0 @@
-
-import 'package:contacts_plus/models/friend.dart';
-
-class FriendsApi {
-
-  static Future<List<Friend>> getFriendsList() async {
-    return [];
-  }
-}

lib/apis/message_api.dart

@@ -0,0 +1,23 @@
+import 'dart:convert';
+
+import 'package:contacts_plus/api_client.dart';
+import 'package:contacts_plus/models/message.dart';
+
+class MessageApi {
+
+  const MessageApi({required ApiClient apiClient}) : _apiClient = apiClient;
+
+  final ApiClient _apiClient;
+
+  Future<Iterable<Message>> getUserMessages({String userId="", DateTime? fromTime, int maxItems=50, bool unreadOnly=false}) async {
+    final response = await _apiClient.get("/users/${_apiClient.userId}/messages"
+        "?maxItems=$maxItems"
+        "${fromTime == null ? "" : "&fromTime${fromTime.toLocal().toIso8601String()}"}"
+        "${userId.isEmpty ? "" : "&user=$userId"}"
+        "&unread=$unreadOnly"
+    );
+    ApiClient.checkResponse(response);
+    final data = jsonDecode(response.body) as List;
+    return data.map((e) => Message.fromMap(e));
+  }
+}

lib/main.dart

@@ -70,6 +70,12 @@ class AuthenticatedClient extends InheritedWidget {
     return result!;
   }
 
+  static AuthenticatedClient staticOf(BuildContext context) {
+    final result = context.findAncestorWidgetOfExactType<AuthenticatedClient>();
+    assert(result != null, 'No AuthenticatedClient found in context');
+    return result!;
+  }
+
   @override
   bool updateShouldNotify(covariant AuthenticatedClient oldWidget) => oldWidget.client != client;
 }

lib/models/authentication_data.dart

@@ -9,10 +9,10 @@ class AuthenticationData {
     required this.userId, required this.token, required this.secretMachineId, required this.isAuthenticated
   });
   
-  factory AuthenticationData.fromJson(Map json) {
-    final userId = json["userId"];
-    final token = json["token"];
-    final machineId = json["secretMachineId"];
+  factory AuthenticationData.fromMap(Map map) {
+    final userId = map["userId"];
+    final token = map["token"];
+    final machineId = map["secretMachineId"];
     if (userId == null || token == null || machineId == null) {
       return _unauthenticated;
     }

lib/models/friend.dart

@@ -1,13 +1,37 @@
-class Friend {
+import 'dart:developer';
+
+import 'package:flutter/foundation.dart';
+
+class Friend extends Comparable {
   final String id;
   final String username;
   final UserStatus userStatus;
 
   Friend({required this.id, required this.username, required this.userStatus});
+
+  factory Friend.fromMap(Map map) {
+    return Friend(id: map["id"], username: map["friendUsername"], userStatus: UserStatus.fromMap(map["userStatus"]));
+  }
+
+  @override
+  int compareTo(other) {
+    if (userStatus.onlineStatus == other.userStatus.onlineStatus) {
+      return userStatus.lastStatusChange.compareTo(other.userStatus.lastStatusChange);
+    } else {
+      if (userStatus.onlineStatus == OnlineStatus.online) {
+        return -1;
+      } else {
+        return 1;
+      }
+    }
+  }
 }
 
 enum OnlineStatus {
+  unknown,
   offline,
+  away,
+  busy,
   online,
 }
 
@@ -16,4 +40,18 @@ class UserStatus {
   final DateTime lastStatusChange;
 
   UserStatus({required this.onlineStatus, required this.lastStatusChange});
+
+  factory UserStatus.fromMap(Map map) {
+    final statusString = map["onlineStatus"] as String?;
+    final status = OnlineStatus.values.firstWhere((element) => element.name == statusString?.toLowerCase(),
+      orElse: () => OnlineStatus.unknown,
+    );
+    if (status == OnlineStatus.unknown && statusString != null) {
+      log("Unknown OnlineStatus '$statusString' in response");
+    }
+    return UserStatus(
+      onlineStatus: status,
+      lastStatusChange: DateTime.parse(map["lastStatusChange"]),
+    );
+  }
 }

lib/models/message.dart

@@ -0,0 +1,34 @@
+import 'dart:developer';
+
+enum MessageType {
+  unknown,
+  text,
+  sound,
+}
+
+class Message {
+  final String id;
+  final String recipientId;
+  final String senderId;
+  final MessageType type;
+  final String content;
+
+  Message({required this.id, required this.recipientId, required this.senderId, required this.type, required this.content});
+
+  factory Message.fromMap(Map map) {
+    final typeString = map["messageType"] as String?;
+    final type = MessageType.values.firstWhere((element) => element.name == typeString?.toLowerCase(),
+      orElse: () => MessageType.unknown,
+    );
+    if (type == MessageType.unknown && typeString != null) {
+      log("Unknown MessageType '$typeString' in response");
+    }
+    return Message(
+      id: map["id"],
+      recipientId: map["recipient_id"],
+      senderId: map["sender_id"],
+      type: type,
+      content: map["content"],
+    );
+  }
+}

lib/widgets/home_screen.dart

@@ -1,3 +1,7 @@
+import 'package:contacts_plus/apis/friend_api.dart';
+import 'package:contacts_plus/main.dart';
+import 'package:contacts_plus/models/friend.dart';
+import 'package:contacts_plus/widgets/messages.dart';
 import 'package:flutter/material.dart';
 
 class HomeScreen extends StatefulWidget {
@@ -9,6 +13,35 @@ class HomeScreen extends StatefulWidget {
 
 class _HomeScreenState extends State<HomeScreen> {
 
+  late final FriendApi _friendsApi;
+  Future<List<Friend>>? _friendsFuture;
+
+  @override
+  void initState() {
+    super.initState();
+    _friendsApi = FriendApi(apiClient: AuthenticatedClient
+        .staticOf(context)
+        .client);
+    _refreshFriendsList();
+  }
+
+  void _refreshFriendsList() {
+    _friendsFuture = _friendsApi.getFriendsList().then((Iterable<Friend> value) =>
+    value.toList()
+      ..sort((a, b) {
+        if (a.userStatus.onlineStatus == b.userStatus.onlineStatus) {
+          return a.userStatus.lastStatusChange.compareTo(b.userStatus.lastStatusChange);
+        } else {
+          if (a.userStatus.onlineStatus == OnlineStatus.online) {
+            return -1;
+          } else {
+            return 1;
+          }
+        }
+      },
+      ),
+    );
+  }
 
   @override
   Widget build(BuildContext context) {
@@ -16,31 +49,48 @@ class _HomeScreenState extends State<HomeScreen> {
       appBar: AppBar(
         title: const Text("Contacts+"),
       ),
-      body: FutureBuilder(
-          builder: (context, snapshot) {
-            if (snapshot.hasData) {
-              return ListView.builder(
-                itemBuilder: (context, index) {
-
-                },
-              );
-            } else if (snapshot.hasError) {
-              return Center(child: Padding(
-                padding: const EdgeInsets.all(64),
-                child: Text(
-                  "Something went wrong: ${snapshot.error}",
-                  softWrap: true,
-                  style: Theme
-                      .of(context)
-                      .textTheme
-                      .labelMedium,
-                ),
-              ),
-              );
-            } else {
-              return const LinearProgressIndicator();
+      body: RefreshIndicator(
+        onRefresh: () async {
+          _refreshFriendsList();
+          await _friendsFuture;
+        },
+        child: FutureBuilder(
+            future: _friendsFuture,
+            builder: (context, snapshot) {
+              if (snapshot.hasData) {
+                final data = snapshot.data as Iterable<Friend>;
+                return ListView.builder(
+                  itemCount: data.length,
+                  itemBuilder: (context, index) {
+                    final entry = data.elementAt(index);
+                    return ListTile(
+                      title: Text(entry.username),
+                      subtitle: Text(entry.userStatus.onlineStatus.name),
+                      onTap: () {
+                        Navigator.push(context, MaterialPageRoute(builder: (context) => Messages(friend: entry)));
+                      },
+                    );
+                  },
+                );
+              } else if (snapshot.hasError) {
+                return Center(
+                  child: Padding(
+                    padding: const EdgeInsets.all(64),
+                    child: Text(
+                      "Something went wrong: ${snapshot.error}",
+                      softWrap: true,
+                      style: Theme
+                          .of(context)
+                          .textTheme
+                          .labelMedium,
+                    ),
+                  ),
+                );
+              } else {
+                return const LinearProgressIndicator();
+              }
             }
-          }
+        ),
       ),
     );
   }

lib/widgets/messages.dart

@@ -0,0 +1,123 @@
+import 'package:contacts_plus/apis/message_api.dart';
+import 'package:contacts_plus/main.dart';
+import 'package:contacts_plus/models/friend.dart';
+import 'package:contacts_plus/models/message.dart';
+import 'package:flutter/material.dart';
+
+class Messages extends StatefulWidget {
+  const Messages({required this.friend, super.key});
+
+  final Friend friend;
+
+  @override
+  State<StatefulWidget> createState() => _MessagesState();
+
+}
+
+class _MessagesState extends State<Messages> {
+  Future<Iterable<Message>>? _messagesFuture;
+  late final MessageApi _messageApi;
+
+  void _refreshMessages() {
+    _messagesFuture = _messageApi.getUserMessages(userId: widget.friend.id)..then((value) => value.toList());
+  }
+
+  @override
+  void initState() {
+    super.initState();
+    _messageApi = MessageApi(
+      apiClient: AuthenticatedClient
+      .staticOf(context)
+      .client,
+    );
+    _refreshMessages();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final apiClient = AuthenticatedClient.of(context).client;
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(widget.friend.username),
+      ),
+      body: FutureBuilder(
+        future: _messagesFuture,
+        builder: (context, snapshot) {
+          if (snapshot.hasData) {
+            final data = snapshot.data as Iterable<Message>;
+            return ListView.builder(
+              itemCount: data.length,
+              itemBuilder: (context, index) {
+                final entry = data.elementAt(index);
+                if (entry.senderId == apiClient.userId) {
+                  return MyMessageBubble(message: entry);
+                } else {
+                  return OtherMessageBubble(message: entry);
+                }
+              },
+            );
+          } else if (snapshot.hasError) {
+            return Column(
+              children: [
+                Text("Failed to load messages:\n${snapshot.error}"),
+                TextButton.icon(
+                  onPressed: () {
+
+                  },
+                  icon: const Icon(Icons.refresh),
+                  label: const Text("Retry"),
+                ),
+              ],
+            );
+          } else {
+            return const LinearProgressIndicator();
+          }
+        },
+      ),
+    );
+  }
+}
+
+class MyMessageBubble extends StatelessWidget {
+  const MyMessageBubble({required this.message, super.key});
+
+  final Message message;
+
+  @override
+  Widget build(BuildContext context) {
+    return Row(
+      mainAxisAlignment: MainAxisAlignment.end,
+      mainAxisSize: MainAxisSize.max,
+      children: [
+        Container(
+          color: Theme.of(context).colorScheme.primaryContainer,
+          margin: const EdgeInsets.only(left:16),
+          padding: const EdgeInsets.all(12),
+          child: Text(message.content, softWrap: true,),
+        ),
+      ],
+    );
+  }
+}
+
+
+class OtherMessageBubble extends StatelessWidget {
+  const OtherMessageBubble({required this.message, super.key});
+
+  final Message message;
+
+  @override
+  Widget build(BuildContext context) {
+    return Row(
+      mainAxisAlignment: MainAxisAlignment.start,
+      children: [
+        Container(
+          color: Theme.of(context).colorScheme.secondaryContainer,
+          margin: const EdgeInsets.only(right: 16),
+          padding: const EdgeInsets.all(12),
+          child: Text(message.content, softWrap: true,),
+        ),
+      ],
+    );
+  }
+}