import 'package:dio/dio.dart';
import 'package:flutter/foundation.dart';
import 'package:package_info_plus/package_info_plus.dart';
import '../core/api/api_client.dart';
import '../core/exceptions.dart';

class FeedbackRepository {
  final ApiClient _client;
  const FeedbackRepository(this._client);

  /// 上传单张图片，返回服务器相对 URL（/images/feedback/...）。
  Future<String> uploadImage({
    Uint8List? bytes,
    String? filePath,
    String filename = 'image.jpg',
  }) async {
    try {
      final MultipartFile file;
      if (bytes != null) {
        file = MultipartFile.fromBytes(bytes, filename: filename);
      } else {
        file = await MultipartFile.fromFile(filePath!);
      }
      final formData = FormData.fromMap({'file': file});
      final resp = await _client.post('/feedback/images', data: formData);
      return (resp.data as Map<String, dynamic>)['url'] as String;
    } on DioException catch (e) {
      throw AppException(
        e.response?.data?['error'] as String? ?? '图片上传失败',
        statusCode: e.response?.statusCode,
      );
    }
  }

  /// 提交反馈（bug / suggestion），文字 + 图片 URL 列表。
  Future<void> submit({
    required String type,
    required String content,
    required List<String> images,
  }) async {
    String appVersion = '';
    try {
      appVersion = (await PackageInfo.fromPlatform()).version;
    } catch (_) {}
    try {
      await _client.post('/feedback', data: {
        'type': type,
        'content': content,
        'images': images,
        'app_version': appVersion,
        'platform': _platform(),
      });
    } on DioException catch (e) {
      throw AppException(
        e.response?.data?['error'] as String? ?? '提交失败',
        statusCode: e.response?.statusCode,
      );
    }
  }

  String _platform() {
    if (kIsWeb) return 'web';
    switch (defaultTargetPlatform) {
      case TargetPlatform.windows:
        return 'windows';
      case TargetPlatform.macOS:
        return 'macos';
      case TargetPlatform.android:
        return 'android';
      case TargetPlatform.iOS:
        return 'ios';
      case TargetPlatform.linux:
        return 'linux';
      default:
        return 'unknown';
    }
  }
}