Initial commit

lib/pages/sign_in/view_model/model/public_homeserver_data.dart

@@ -0,0 +1,84 @@
+// SPDX-FileCopyrightText: 2019-Present Christian Kußowski
+// SPDX-FileCopyrightText: 2019-Present Contributors to FluffyChat
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+class PublicHomeserverData {
+  final String? name;
+  final String? clientDomain;
+  final String? website;
+  final String? isp;
+  final String? staffJur;
+  final String? rules;
+  final String? privacy;
+  final bool? usingVanillaReg;
+  final String? description;
+  final String? regMethod;
+  final String? regLink;
+  final String? software;
+  final String? version;
+  final bool? captcha;
+  final bool? email;
+  final List<String>? languages;
+  final List<String>? features;
+  final int? onlineStatus;
+  final String? serverDomain;
+  final int? verStatus;
+  final int? roomDirectory;
+  final bool? slidingSync;
+  final bool? ipv6;
+
+  PublicHomeserverData({
+    this.name,
+    this.clientDomain,
+    this.website,
+    this.isp,
+    this.staffJur,
+    this.rules,
+    this.privacy,
+    this.usingVanillaReg,
+    this.description,
+    this.regMethod,
+    this.regLink,
+    this.software,
+    this.version,
+    this.captcha,
+    this.email,
+    this.languages,
+    this.features,
+    this.onlineStatus,
+    this.serverDomain,
+    this.verStatus,
+    this.roomDirectory,
+    this.slidingSync,
+    this.ipv6,
+  });
+
+  factory PublicHomeserverData.fromJson(Map<String, dynamic> json) {
+    return PublicHomeserverData(
+      name: json['name'],
+      clientDomain: json['client_domain'],
+      website: json['website'],
+      isp: json['isp'],
+      staffJur: json['staff_jur'],
+      rules: json['rules'],
+      privacy: json['privacy'],
+      usingVanillaReg: json['using_vanilla_reg'],
+      description: json['description'],
+      regMethod: json['reg_method'],
+      regLink: json['reg_link'],
+      software: json['software'],
+      version: json['version'],
+      captcha: json['captcha'],
+      email: json['email'],
+      languages: List<String>.from(json['languages'] ?? []),
+      features: List<String>.from(json['features'] ?? []),
+      onlineStatus: json['online_status'],
+      serverDomain: json['server_domain'],
+      verStatus: json['ver_status'],
+      roomDirectory: json['room_directory'],
+      slidingSync: json['sliding_sync'],
+      ipv6: json['ipv6'],
+    );
+  }
+}

lib/pages/sign_in/view_model/sign_in_state.dart

@@ -0,0 +1,15 @@
+// SPDX-FileCopyrightText: 2019-Present Christian Kußowski
+// SPDX-FileCopyrightText: 2019-Present Contributors to FluffyChat
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+import 'package:tatchat/pages/sign_in/view_model/model/public_homeserver_data.dart';
+import 'package:material_ui/material_ui.dart';
+
+class SignInState {
+  PublicHomeserverData? selectedHomeserver;
+  AsyncSnapshot<List<PublicHomeserverData>> publicHomeservers =
+      const AsyncSnapshot.nothing();
+  List<PublicHomeserverData> filteredPublicHomeservers = [];
+  AsyncSnapshot<bool> loginLoading = const AsyncSnapshot.nothing();
+}

lib/pages/sign_in/view_model/sign_in_view_model.dart

@@ -0,0 +1,114 @@
+// SPDX-FileCopyrightText: 2019-Present Christian Kußowski
+// SPDX-FileCopyrightText: 2019-Present Contributors to FluffyChat
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+import 'dart:convert';
+
+import 'package:collection/collection.dart';
+import 'package:tatchat/config/app_config.dart';
+import 'package:tatchat/config/setting_keys.dart';
+import 'package:tatchat/pages/sign_in/view_model/model/public_homeserver_data.dart';
+import 'package:tatchat/pages/sign_in/view_model/sign_in_state.dart';
+import 'package:tatchat/widgets/matrix.dart';
+import 'package:flutter/widgets.dart';
+import 'package:matrix/matrix_api_lite/utils/logs.dart';
+
+class SignInViewModel extends ValueNotifier<SignInState> {
+  final MatrixState matrixService;
+  final bool signUp;
+  final TextEditingController filterTextController = TextEditingController();
+
+  SignInViewModel(this.matrixService, {required this.signUp})
+    : super(SignInState()) {
+    refreshPublicHomeservers();
+    filterTextController.addListener(_filterHomeservers);
+  }
+
+  @override
+  void dispose() {
+    filterTextController.removeListener(_filterHomeservers);
+    filterTextController.dispose();
+    super.dispose();
+  }
+
+  void _filterHomeservers() {
+    final filterText = filterTextController.text.trim().toLowerCase();
+    final filteredPublicHomeservers =
+        value.publicHomeservers.data
+            ?.where(
+              (homeserver) =>
+                  homeserver.name?.toLowerCase().contains(filterText) ?? false,
+            )
+            .toList() ??
+        [];
+    if (filterText.length >= 3 &&
+        (filterText.contains('.') || filterText.endsWith('localhost')) &&
+        Uri.tryParse(filterText) != null &&
+        !filteredPublicHomeservers.any(
+          (homeserver) => homeserver.name == filterText,
+        )) {
+      filteredPublicHomeservers.add(PublicHomeserverData(name: filterText));
+    }
+    value.filteredPublicHomeservers = filteredPublicHomeservers;
+    notifyListeners();
+  }
+
+  Future<void> refreshPublicHomeservers() async {
+    notifyListeners();
+    value.publicHomeservers = AsyncSnapshot.waiting();
+    final defaultHomeserverData = PublicHomeserverData(
+      name: AppSettings.defaultHomeserver.value,
+    );
+    try {
+      final client = await matrixService.getLoginClient();
+      final response = await client.httpClient.get(AppConfig.homeserverList);
+      final json = jsonDecode(response.body) as Map<String, dynamic>;
+      final homeserverJsonList = json['public_servers'] as List;
+
+      final publicHomeservers = homeserverJsonList
+          .map((json) => PublicHomeserverData.fromJson(json))
+          .toList();
+
+      if (signUp) {
+        publicHomeservers.removeWhere((server) {
+          return server.regMethod == null;
+        });
+      }
+
+      final defaultServer = publicHomeservers.singleWhereOrNull(
+        (server) => server.name == AppSettings.defaultHomeserver.value,
+      );
+
+      if (defaultServer == null) {
+        publicHomeservers.insert(0, defaultHomeserverData);
+      }
+
+      value.selectedHomeserver =
+          value.selectedHomeserver ?? publicHomeservers.first;
+      value.publicHomeservers = AsyncSnapshot.withData(
+        ConnectionState.done,
+        publicHomeservers,
+      );
+      notifyListeners();
+    } catch (e, s) {
+      Logs().w('Unable to fetch public homeservers...', e, s);
+      value.selectedHomeserver = defaultHomeserverData;
+      value.publicHomeservers = AsyncSnapshot.withData(ConnectionState.done, [
+        defaultHomeserverData,
+      ]);
+      notifyListeners();
+    }
+    _filterHomeservers();
+  }
+
+  void selectHomeserver(PublicHomeserverData? publicHomeserverData) {
+    value.selectedHomeserver = publicHomeserverData;
+    notifyListeners();
+  }
+
+  void setLoginLoading(AsyncSnapshot<bool> loginLoading) {
+    value.loginLoading = loginLoading;
+    notifyListeners();
+  }
+}