using System;
using System.Collections.Generic;

namespace Store.Framework.Models
{
	public static class ResultCode
	{
		public const int Success = 200;
		public const int Fail = 500;

		public const int Unauthorized = 401;
		public const int Forbidden = 403;
		public const int NotFound = 404;
		/// <summary>
		/// 参数校验失败
		/// </summary>
		public const int ValidationError = 1001;
		/// <summary>
		/// 业务逻辑异常
		/// </summary>
		public const int BusinessError = 2001;
		/// <summary>
		/// 服务器内部错误
		/// </summary>
		public const int ServerError = 5000;
	}
	/// <summary>
	/// 非泛型基类，用于统一处理
	/// </summary>
	public abstract class ApiResultBase
	{
		/// <summary>业务状态码</summary>
		public int Code { get; set; } = ResultCode.Success;

		/// <summary>提示信息</summary>
		public string Msg { get; set; }

		/// <summary>请求是否成功</summary>
		public bool IsSuccess => Code == ResultCode.Success;

	}

	/// <summary>
	/// 泛型响应
	/// </summary>
	public class ApiResult<T> : ApiResultBase
	{
		public T Data { get; set; }

		public static ApiResult<T> Success(T data, string msg = "操作成功")
	   => new ApiResult<T> { Code = ResultCode.Success, Data = data, Msg = msg };

		public static ApiResult<T> Fail(string msg = "操作失败", int code = ResultCode.Fail, T data = default)
			=> new ApiResult<T> { Code = code, Msg = msg, Data = data };
	}

	/// <summary>
	/// 无数据响应（等同于 ApiResult<object>）
	/// </summary>
	public class ApiResult : ApiResult<object>
	{
		public static ApiResult Success(string msg = "操作成功")
		=> new ApiResult { Code = ResultCode.Success, Msg = msg };

		public static ApiResult Fail(string msg = "操作失败", int code = ResultCode.Fail)
			=> new ApiResult { Code = code, Msg = msg };
	}

	public class ApiPageResult<T>: ApiResult<T>
	{
		public long Total { get; set; }
		public int PageIndex { get; set; }
		public int PageSize { get; set; }
		public int TotalPages => PageSize > 0 ? (int)Math.Ceiling((double)Total / PageSize) : 0;
		public List<T> List { get; set; } = new();
		public ApiPageResult() { }

		public ApiPageResult(List<T> list, long total, int pageIndex, int pageSize)
		{
			List = list;
			Total = total;
			PageIndex = pageIndex;
			PageSize = pageSize;
		}
	}


}