Initial commit

lib/features/login/services/authentication.service.dart

@@ -0,0 +1,57 @@
+import 'dart:convert';
+
+import 'package:flutter_paperless_mobile/core/model/error_message.dart';
+import 'package:flutter_paperless_mobile/core/store/local_vault.dart';
+import 'package:http/http.dart';
+import 'package:injectable/injectable.dart';
+import 'package:local_auth/local_auth.dart';
+
+@singleton
+class AuthenticationService {
+  final BaseClient httpClient;
+  final LocalVault localStore;
+  final LocalAuthentication localAuthentication;
+
+  AuthenticationService(
+    this.localStore,
+    this.localAuthentication,
+    @Named("timeoutClient") this.httpClient,
+  );
+
+  ///
+  /// Returns the authentication token.
+  ///
+  Future<String> login({
+    required String username,
+    required String password,
+    required String serverUrl,
+  }) async {
+    final response = await httpClient.post(
+      Uri.parse("/api/token/"),
+      body: {"username": username, "password": password},
+    );
+    if (response.statusCode == 200) {
+      final data = jsonDecode(response.body);
+      return data['token'];
+    } else if (response.statusCode == 400 &&
+        response.body.toLowerCase().contains("no required certificate was sent")) {
+      throw const ErrorMessage(ErrorCode.invalidClientCertificateConfiguration);
+    } else {
+      throw const ErrorMessage(ErrorCode.authenticationFailed);
+    }
+  }
+
+  Future<bool> authenticateLocalUser(String localizedReason) async {
+    if (await localAuthentication.isDeviceSupported()) {
+      return await localAuthentication.authenticate(
+        localizedReason: localizedReason,
+        options: const AuthenticationOptions(
+          stickyAuth: true,
+          biometricOnly: true,
+          useErrorDialogs: true,
+        ),
+      );
+    }
+    return false;
+  }
+}