/// API Service - Main HTTP client using Dio
library;

import 'package:dio/dio.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:pretty_dio_logger/pretty_dio_logger.dart';

import '../../../core/constants/api_constants.dart';
import '../../providers/auth_provider.dart';

/// API Service provider
final apiServiceProvider = Provider<Dio>((ref) {
  final authState = ref.watch(authProvider);
  final token = authState?.accessToken;

  final options = BaseOptions(
    baseUrl: ApiConstants.baseUrl,
    connectTimeout: const Duration(milliseconds: ApiConstants.connectionTimeoutMs),
    receiveTimeout: const Duration(milliseconds: ApiConstants.receiveTimeoutMs),
    sendTimeout: const Duration(milliseconds: ApiConstants.sendTimeoutMs),
    headers: {
      'Content-Type': 'application/json',
      if (token != null) 'Authorization': 'Bearer $token',
    },
  );

  final dio = Dio(options);

  // Add logger in debug mode
  dio.interceptors.add(
    PrettyDioLogger(
      requestHeader: true,
      requestBody: true,
      responseBody: true,
      responseHeader: false,
      error: true,
      compact: true,
    ),
  );

  // Add token refresh interceptor
  dio.interceptors.add(
    InterceptorsWrapper(
      onError: (error, handler) async {
        if (error.response?.statusCode == 401) {
          // Try to refresh token
          try {
            final newToken = await ref.read(authProvider.notifier).refreshToken();
            if (newToken != null) {
              // Retry original request with new token
              final opts = options.copyWith(
                headers: {
                  ...options.headers,
                  'Authorization': 'Bearer $newToken',
                },
              );
              final clonedReq = await dio.fetch(opts..path = error.requestOptions.path);
              return handler.resolve(clonedReq);
            }
          } catch (e) {
            // Refresh failed, logout user
            ref.read(authProvider.notifier).logout();
          }
        }
        return handler.next(error);
      },
    ),
  );

  return dio;
});

/// Get API client
Dio getDio(Ref ref) {
  return ref.read(apiServiceProvider);
}