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twilio-wp-plugin/mobile/lib/services/api_client.dart

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import 'package:dio/dio.dart';
import 'package:flutter_secure_storage/flutter_secure_storage.dart';
class ApiClient {
late final Dio dio;
final FlutterSecureStorage _storage = const FlutterSecureStorage();
VoidCallback? onForceLogout;
ApiClient() {
dio = Dio(BaseOptions(
connectTimeout: const Duration(seconds: 15),
receiveTimeout: const Duration(seconds: 30),
));
dio.interceptors.add(InterceptorsWrapper(
onRequest: (options, handler) async {
final token = await _storage.read(key: 'access_token');
if (token != null) {
options.headers['Authorization'] = 'Bearer $token';
}
handler.next(options);
},
onError: (error, handler) async {
if (error.response?.statusCode == 401) {
final refreshed = await _tryRefreshToken();
if (refreshed) {
final opts = error.requestOptions;
final token = await _storage.read(key: 'access_token');
opts.headers['Authorization'] = 'Bearer $token';
try {
final response = await dio.fetch(opts);
return handler.resolve(response);
} catch (e) {
return handler.next(error);
}
} else {
onForceLogout?.call();
}
}
handler.next(error);
},
));
}
Future<void> setBaseUrl(String serverUrl) async {
final url = serverUrl.endsWith('/')
? serverUrl.substring(0, serverUrl.length - 1)
: serverUrl;
dio.options.baseUrl = '$url/wp-json/twilio-mobile/v1';
await _storage.write(key: 'server_url', value: url);
}
Future<void> restoreBaseUrl() async {
final url = await _storage.read(key: 'server_url');
if (url != null) {
dio.options.baseUrl = '$url/wp-json/twilio-mobile/v1';
}
}
Future<bool> _tryRefreshToken() async {
try {
final refreshToken = await _storage.read(key: 'refresh_token');
if (refreshToken == null) return false;
final response = await dio.post(
'/auth/refresh',
data: {'refresh_token': refreshToken},
options: Options(headers: {'Authorization': ''}),
);
if (response.statusCode == 200 && response.data['success'] == true) {
await _storage.write(
key: 'access_token', value: response.data['access_token']);
if (response.data['refresh_token'] != null) {
await _storage.write(
key: 'refresh_token', value: response.data['refresh_token']);
}
return true;
}
} catch (_) {}
return false;
}
}
typedef VoidCallback = void Function();