add client ID fetching support, rip out old logins

.vscode/settings.json

@@ -10,6 +10,7 @@
         "msgtype",
         "muks",
         "prefs",
-        "unban"
+        "unban",
+        "unredact"
     ]
 }

gomuks

@@ -1 +1 @@
-Subproject commit 23638a8d2b5ad7ed9f72a0ec39f56cac119c45fb
+Subproject commit d7506029a62299515356f72061d36ae35e9c9590

lib/controllers/client.dart

@@ -20,8 +20,8 @@ import "package:nexus/models/requests/get_event.dart";
 import "package:nexus/models/requests/get_related_events.dart";
 import "package:nexus/models/requests/get_room_state.dart";
 import "package:nexus/models/requests/join_room.dart";
-import "package:nexus/models/requests/login.dart";
 import "package:nexus/models/profile.dart";
+import "package:nexus/models/requests/oauth/register_client.dart";
 import "package:nexus/models/requests/paginate.dart";
 import "package:nexus/models/requests/redact_event.dart";
 import "package:nexus/models/requests/report.dart";
@@ -275,14 +275,11 @@ class ClientController extends AsyncNotifier<int> {
     });
   }
 
-  Future<String?> login(LoginRequest login) async {
-    try {
-      await _sendCommand("login", login.toJson());
-      return null;
-    } catch (error) {
-      return error.toString();
-    }
-  }
+  Future<String> registerClient(OAuthRegisterClientRequest request) async =>
+      (await _sendCommand(
+        "oauth_register_client",
+        request.toJson(),
+      ))["client_id"];
 
   Future<Uri?> discoverHomeserver(Uri homeserver) async {
     try {

lib/controllers/client_id_controller.dart

@@ -0,0 +1,33 @@
+import "package:flutter_riverpod/flutter_riverpod.dart";
+import "package:nexus/controllers/client.dart";
+import "package:nexus/controllers/shared_prefs.dart";
+
+class ClientIdController extends AsyncNotifier<String> {
+  static const prefString = "client_id";
+
+  @override
+  Future<String> build() async {
+    final prefs = await ref.watch(SharedPrefsController.provider.future);
+    final fromPref = prefs.getString(prefString);
+
+    if (fromPref != null) return fromPref;
+
+    final fetched = await ref
+        .watch(ClientController.provider.notifier)
+        .registerClient(
+          .new(
+            homeserverUrl: Uri.https("matrix.federated.nexus"),
+            clientUri: Uri.https("nexus.federated.nexus"),
+          ),
+        );
+
+    await prefs.setString(prefString, fetched);
+
+    return fetched;
+  }
+
+  static final provider =
+      AsyncNotifierProvider.autoDispose<ClientIdController, String>(
+        ClientIdController.new,
+      );
+}

lib/models/requests/get_event.dart

@@ -2,9 +2,8 @@ import "package:freezed_annotation/freezed_annotation.dart";
 part "get_event.freezed.dart";
 part "get_event.g.dart";
 
-@Freezed()
+@freezed
 abstract class GetEventRequest with _$GetEventRequest {
-  const GetEventRequest._();
   const factory GetEventRequest({
     required String roomId,
     required String eventId,

lib/models/requests/login.dart

@@ -1,15 +0,0 @@
-import "package:freezed_annotation/freezed_annotation.dart";
-part "login.freezed.dart";
-part "login.g.dart";
-
-@freezed
-abstract class LoginRequest with _$LoginRequest {
-  const factory LoginRequest({
-    required String username,
-    required String password,
-    required String homeserverUrl,
-  }) = _LoginRequest;
-
-  factory LoginRequest.fromJson(Map<String, Object?> json) =>
-      _$LoginRequestFromJson(json);
-}

lib/models/requests/oauth/register_client.dart

@@ -0,0 +1,47 @@
+import "package:fast_immutable_collections/fast_immutable_collections.dart";
+import "package:freezed_annotation/freezed_annotation.dart";
+part "register_client.freezed.dart";
+part "register_client.g.dart";
+
+@freezed
+abstract class OAuthRegisterClientRequest with _$OAuthRegisterClientRequest {
+  const factory OAuthRegisterClientRequest({
+    required Uri homeserverUrl,
+    ApplicationType? applicationType,
+    String? clientName,
+    required Uri clientUri,
+    Uri? logoUri,
+    Uri? policyUri,
+    Uri? tosUri,
+    IList<GrantType>? grantTypes,
+    IList<Uri>? redirectUris,
+    IList<ResponseType>? responseTypes,
+    AuthMethod? authMethod,
+  }) = _OAuthRegisterClientRequest;
+
+  factory OAuthRegisterClientRequest.fromJson(Map<String, Object?> json) =>
+      _$OAuthRegisterClientRequestFromJson(json);
+}
+
+enum ApplicationType { native, web }
+
+@JsonEnum(fieldRename: .snake)
+enum ResponseType { code, idToken }
+
+@JsonEnum(fieldRename: .snake)
+enum AuthMethod {
+  clientSecretPost,
+  clientSecretBasic,
+  clientSecretJwt,
+  privateKeyJwt,
+  none,
+}
+
+@JsonEnum(fieldRename: .snake)
+enum GrantType {
+  authorizationCode,
+  refreshToken,
+  clientCredentials,
+  @JsonValue("urn:ietf:params:oauth:grant-type:device_code")
+  deviceCode,
+}

lib/pages/login.dart

@@ -2,6 +2,8 @@ import "package:flutter/material.dart";
 import "package:flutter_hooks/flutter_hooks.dart";
 import "package:hooks_riverpod/hooks_riverpod.dart";
 import "package:nexus/controllers/client.dart";
+import "package:nexus/controllers/client_id_controller.dart";
+import "package:nexus/helpers/extensions/better_when.dart";
 import "package:nexus/widgets/appbar.dart";
 import "package:nexus/helpers/required_validator_helper.dart";
 
@@ -10,90 +12,9 @@ class LoginPage extends HookConsumerWidget {
   const LoginPage({super.key, required this.homeserver});
 
   @override
-  Widget build(BuildContext context, WidgetRef ref) {
-    final client = ref.watch(ClientController.provider.notifier);
-
-    final isLoading = useState(false);
-    final username = useTextEditingController();
-    final password = useTextEditingController();
-
-    final inputError = useState<String?>(null);
-    final formKey = useRef(GlobalKey<FormState>());
-
-    Future<void> tryLogin() async {
-      isLoading.value = true;
-
-      try {
-        if (formKey.value.currentState?.validate() != true) return;
-
-        final error = await client.login(
-          .new(
-            username: username.text,
-            password: password.text,
-            homeserverUrl: homeserver.origin,
-          ),
+  Widget build(BuildContext context, WidgetRef ref) => Scaffold(
+    body: ref
+        .watch(ClientIdController.provider)
+        .betterWhen(data: (value) => Text(value)),
   );
-
-        if (error != null) {
-          inputError.value = error;
-          isLoading.value = false;
-        } else {
-          if (context.mounted) Navigator.of(context).pop();
-        }
-      } finally {
-        isLoading.value = false;
-      }
-    }
-
-    return Scaffold(
-      appBar: Appbar(
-        leading: IconButton(
-          icon: Icon(Icons.arrow_back),
-          onPressed: Navigator.of(context).pop,
-        ),
-      ),
-      body: AlertDialog(
-        title: Text("Login to ${homeserver.host}"),
-        content: Form(
-          key: formKey.value,
-          child: Column(
-            mainAxisSize: .min,
-            crossAxisAlignment: .start,
-            children: [
-              TextFormField(
-                autofocus: true,
-                textInputAction: .next,
-                autovalidateMode: .onUserInteraction,
-                validator: requiredValidator,
-                decoration: .new(label: Text("Username")),
-                controller: username,
-              ),
-              SizedBox(height: 12),
-              TextFormField(
-                textInputAction: .done,
-                decoration: .new(
-                  label: Text("Password"),
-                  errorText: inputError.value,
-                  errorMaxLines: 5,
-                ),
-                autovalidateMode: .onUserInteraction,
-                validator: requiredValidator,
-                controller: password,
-                obscureText: true,
-                onFieldSubmitted: (_) => tryLogin(),
-                // Don't defocus on submit
-                onEditingComplete: () {},
-              ),
-            ],
-          ),
-        ),
-        actions: [
-          TextButton(
-            onPressed: isLoading.value ? null : tryLogin,
-            child: Text("Sign In"),
-          ),
-        ],
-      ),
-    );
-  }
 }