import 'dart:typed_data';
import 'package:dio/dio.dart';
import '../utils/app_config.dart';

class ApiService {
  late final Dio _dio;

  ApiService() {
    _dio = Dio(BaseOptions(
      baseUrl: AppConfig.apiBaseUrl,
      connectTimeout: const Duration(seconds: 10),
      receiveTimeout: const Duration(seconds: 10),
      headers: {
        'Content-Type': 'application/json',
      },
    ));

    // 添加日志拦截器
    _dio.interceptors.add(LogInterceptor(
      requestBody: false, // 不打印请求体（图片太大）
      responseBody: true,
      error: true,
    ));
  }

  /// 上传图像到后端
  Future<Map<String, dynamic>> uploadImage(Uint8List imageBytes) async {
    try {
      final formData = FormData.fromMap({
        'file': MultipartFile.fromBytes(
          imageBytes,
          filename: 'image_${DateTime.now().millisecondsSinceEpoch}.jpg',
        ),
      });

      final response = await _dio.post(
        '/api/v1/images/upload',
        data: formData,
      );

      return response.data;
    } catch (e) {
      print('上传图像失败: $e');
      rethrow;
    }
  }

  /// 请求 AI 分析
  Future<Map<String, dynamic>> analyzeImage(String imageUrl) async {
    try {
      final response = await _dio.post(
        '/api/v1/analysis/analyze',
        data: {'image_url': imageUrl},
      );

      return response.data;
    } catch (e) {
      print('分析图像失败: $e');
      rethrow;
    }
  }

  /// 一步到位：上传并分析
  Future<Map<String, dynamic>> uploadAndAnalyze(Uint8List imageBytes) async {
    try {
      // 1. 上传图像
      final uploadResult = await uploadImage(imageBytes);
      final imageUrl = uploadResult['url'];

      // 2. 请求分析
      final analysisResult = await analyzeImage(imageUrl);

      return analysisResult;
    } catch (e) {
      print('上传并分析失败: $e');
      rethrow;
    }
  }
}