using DocumentServiceAPI.Model;
using Furion;
using Furion.DataValidation;
using Furion.FriendlyException;
using Furion.UnifyResult;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Filters;
using System;
using System.Threading.Tasks;

namespace DocumentServiceAPI.Web.Core
{
    /// <summary>
    /// 统一返回
    /// </summary>
    [UnifyModel(typeof(DSFulResult<>))]
    public class DSRESTFulResultProvider : IUnifyResultProvider
    {
        /// <summary>
        /// 异常返回值
        /// </summary>
        /// <param name="context"></param>
        /// <param name="metadata"></param>
        /// <returns></returns>
        public IActionResult OnException(ExceptionContext context, ExceptionMetadata metadata)
        {
          
            return new JsonResult(DsFulResult(metadata.StatusCode, Code:0, data: metadata.Data, errors: metadata.Errors)
                , UnifyContext.GetSerializerSettings(context)); // 当前行仅限 Furion 4.6.6+ 使用
        }

        /// <summary>
        /// 成功返回值
        /// </summary>
        /// <param name="context"></param>
        /// <param name="data"></param>
        /// <returns></returns>
        public IActionResult OnSucceeded(ActionExecutedContext context, object data)
        {
            return new JsonResult(DsFulResult(StatusCodes.Status200OK, 1, data)
                , UnifyContext.GetSerializerSettings(context)); // 当前行仅限 Furion 4.6.6+ 使用
        }

        /// <summary>
        /// 验证失败返回值
        /// </summary>
        /// <param name="context"></param>
        /// <param name="metadata"></param>
        /// <returns></returns>
        public IActionResult OnValidateFailed(ActionExecutingContext context, ValidationMetadata metadata)
        {
            //设置返回状态码
          
            return new JsonResult(DsFulResult(metadata.StatusCode ?? StatusCodes.Status400BadRequest, Code: 0, data: metadata.Data, errors: metadata.ValidationResult)
                , UnifyContext.GetSerializerSettings(context)); // 当前行仅限 Furion 4.6.6+ 使用
        }

        /// <summary>
        /// 特定状态码返回值
        /// </summary>
        /// <param name="context"></param>
        /// <param name="statusCode"></param>
        /// <param name="unifyResultSettings"></param>
        /// <returns></returns>
        public async Task OnResponseStatusCodes(HttpContext context, int statusCode, UnifyResultSettingsOptions unifyResultSettings)
        {
            // 设置响应状态码
            UnifyContext.SetResponseStatusCodes(context, statusCode, unifyResultSettings);

            switch (statusCode)
            {
                // 处理 401 状态码
                case StatusCodes.Status401Unauthorized:
                    await context.Response.WriteAsJsonAsync(DsFulResult(statusCode,Code:0, errors: "401 Unauthorized")
                        , App.GetOptions<JsonOptions>()?.JsonSerializerOptions);
                    break;
                // 处理 403 状态码
                case StatusCodes.Status403Forbidden:
                    await context.Response.WriteAsJsonAsync(DsFulResult(statusCode, Code: 0, errors: "403 Forbidden")
                        , App.GetOptions<JsonOptions>()?.JsonSerializerOptions);
                    break;

                default: break;
            }
        }

        /// <summary>
        /// 返回 RESTful 风格结果集
        /// </summary>
        /// <param name="statusCode"></param>
        /// <param name="Code">成功状态码</param>  
        /// <param name="data"></param>
        /// <param name="errors"></param>
        /// <returns></returns>
        private static DSFulResult<object> DsFulResult(int statusCode, int Code = 1, object data = default, object errors = default)
        {
            return new DSFulResult<object>
            {
                Code = Code,
                StatusCode= statusCode,
                Data = data,
                Error = errors,
                Extras = UnifyContext.Take(),
                Timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds()
            };
        }
    }
}