// 网络请求相关
import 'package:dio/dio.dart';
import 'package:json_annotation/json_annotation.dart';

// 文件处理
import 'package:path/path.dart' as path;

// 生成的代码
part 'advanced_api_service_api.g.dart';

/// 基础响应结果
@JsonSerializable(genericArgumentFactories: true)
class ApiResult<T> {
  /// 响应码
  final int code;

  /// 响应消息
  final String message;

  /// 响应数据
  final T? data;

  /// 是否成功
  bool get isSuccess => code == 200;

  const ApiResult({
    required this.code,
    required this.message,
    this.data,
  });

  factory ApiResult.fromJson(
    Map<String, dynamic> json,
    T Function(Object? json) fromJsonT,
  ) =>
      _$ApiResultFromJson(json, fromJsonT);

  Map<String, dynamic> toJson(Object Function(T value) toJsonT) =>
      _$ApiResultToJson(this, toJsonT);
}

/// 分页参数
@JsonSerializable()
class BasePageParameter {
  /// 页码（从1开始）
  final int page;

  /// 每页大小
  final int size;

  const BasePageParameter({
    this.page = 1,
    this.size = 20,
  });

  factory BasePageParameter.fromJson(Map<String, dynamic> json) =>
      _$BasePageParameterFromJson(json);

  Map<String, dynamic> toJson() => _$BasePageParameterToJson(this);
}

/// 分页响应结果
@JsonSerializable(genericArgumentFactories: true)
class PagedResult<T> {
  /// 数据列表
  final List<T> list;

  /// 总数量
  final int total;

  /// 当前页码
  final int page;

  /// 每页大小
  final int size;

  /// 总页数
  int get totalPages => (total / size).ceil();

  /// 是否有下一页
  bool get hasNext => page < totalPages;

  /// 是否有上一页
  bool get hasPrevious => page > 1;

  const PagedResult({
    required this.list,
    required this.total,
    required this.page,
    required this.size,
  });

  factory PagedResult.fromJson(
    Map<String, dynamic> json,
    T Function(Object? json) fromJsonT,
  ) =>
      _$PagedResultFromJson(json, fromJsonT);

  Map<String, dynamic> toJson(Object Function(T value) toJsonT) =>
      _$PagedResultToJson(this, toJsonT);
}

/// 文件上传请求
@JsonSerializable()
class FileUploadRequest {
  /// 文件
  @JsonKey(includeFromJson: false, includeToJson: false)
  final MultipartFile file;

  /// 文件名
  final String? filename;

  /// 文件类型
  final String? contentType;

  const FileUploadRequest({
    required this.file,
    this.filename,
    this.contentType,
  });

  factory FileUploadRequest.fromJson(Map<String, dynamic> json) =>
      _$FileUploadRequestFromJson(json);

  Map<String, dynamic> toJson() => _$FileUploadRequestToJson(this);
}

/// 文件上传响应
@JsonSerializable()
class FileUploadResult {
  /// 文件 URL
  final String url;

  /// 文件名
  final String filename;

  /// 文件大小
  final int size;

  /// 文件类型
  final String? contentType;

  const FileUploadResult({
    required this.url,
    required this.filename,
    required this.size,
    this.contentType,
  });

  factory FileUploadResult.fromJson(Map<String, dynamic> json) =>
      _$FileUploadResultFromJson(json);

  Map<String, dynamic> toJson() => _$FileUploadResultToJson(this);
}

/// 主 API 服务类
/// 包含所有模块的 API 接口
class AdvancedApiService {
  final Dio _dio;

  AdvancedApiService(this._dio, {String? baseUrl});
}

/// API 工具类
class ApiUtils {
  /// 创建文件上传对象
  static Future<MultipartFile> createFileUpload(String filePath) async {
    return MultipartFile.fromFile(
      filePath,
      filename: path.basename(filePath),
    );
  }

  /// 创建分页参数
  static BasePageParameter createPageParam({int page = 1, int size = 20}) {
    return BasePageParameter(page: page, size: size);
  }
}