using FlexJobApi.Core;
using Furion.DatabaseAccessor;
using Furion.FriendlyException;
using Mapster;
using MediatR;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace FlexJobApi.FlexJobServer.Application
{
    /// <summary>
    /// 任务查询处理器
    /// </summary>
    public class TaskInfoQueryHandler(
            IRepository<TaskInfo> rep
        ) :
        IRequestHandler<GetTaskInfoQuery, GetTaskInfoQueryResult>,
        IRequestHandler<GetTaskInfosQuery, PagedListQueryResult<GetTaskInfosQueryResultItem>>

    {
        private readonly IRepository<TaskInfo> rep = rep;

        /// <summary>
        /// 查询任务详情
        /// </summary>
        /// <param name="request"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<GetTaskInfoQueryResult> Handle(GetTaskInfoQuery request, CancellationToken cancellationToken)
        {
            var model = await TaskInfoRepository.GetQueryable(rep)
                .Where(it => it.Id == request.Id)
                .ProjectToType<GetTaskInfoQueryResult>()
                .FirstOrDefaultAsync(cancellationToken);
            model.TaskCount = await rep.AsQueryable().AsNoTracking()
                .Where(it => it.EnterpriseId == model.EnterpriseId && it.ReleaseStatus == EnumTaskReleaseStatus.Stopped)
                .CountAsync();
            return model;
        }

        /// <summary>
        /// 查询任务分页列表
        /// </summary>
        /// <param name="request"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public Task<PagedListQueryResult<GetTaskInfosQueryResultItem>> Handle(GetTaskInfosQuery request, CancellationToken cancellationToken)
        {
            var q = TaskInfoRepository.GetQueryable(rep);
            if (request.Keywords.IsNotNull())
            {
                q = q.Where(it => it.Name.Contains(request.Keywords));
            }
            if (request.BeginTime.HasValue && request.EndTime.HasValue)
            {
                q = q.Where(it => request.BeginTime <= it.BeginTime && it.BeginTime <= request.EndTime);
            }
            if (request.CityCode.IsNotNull())
            {
                q = q.Where(it => it.CityCode == request.CityCode);
            }
            if (request.SettlementCycle.HasValue)
            {
                q = q.Where(it => it.SettlementCycle == request.SettlementCycle);
            }
            if (request.BenefitCodes.IsNotNull())
            {
                q = q.Where(it => it.Benefits.Any(b => request.BenefitCodes.Contains(b.BenefitCode)));
            }
            if (request.GenderLimit.HasValue)
            {
                q = q.Where(it => it.GenderLimit == request.GenderLimit);
            }
            if (request.Status.HasValue)
            {
                q = q.Where(it => it.Status == request.Status);
            }
            if (request.ReleaseStatus.HasValue)
            {
                q = q.Where(it => it.ReleaseStatus == request.ReleaseStatus);
            }
            if (request.RecommendStatus.HasValue)
            {
                q = q.Where(it => it.RecommendStatus == request.RecommendStatus);
            }
            var s = from t in q.Include(it => it.Province).Include(it => it.City)
                    join tu in rep.Change<TaskInfoUser>().AsQueryable().AsNoTracking() on t.Id equals tu.TaskInfoId into tug
                    join tb in rep.Change<TaskInfoBenefit>().AsQueryable().AsNoTracking().Include(it => it.Benefit) on t.Id equals tb.TaskInfoId into tbg
                    join tc in rep.Change<TaskInfoCredentialLimit>().AsQueryable().AsNoTracking().Include(it => it.Type) on t.Id equals tc.TaskInfoId into tcg
                    select new GetTaskInfosQueryResultItem
                    {
                        Id = t.Id,
                        Name = t.Name,
                        Code = t.Code,
                        BillingMethod = t.BillingMethod,
                        ServiceFee = t.ServiceFee,
                        SettlementCycle = t.SettlementCycle,
                        Benefits = tbg.Select(it => new GetTaskInfoQueryResultBenefit
                        {
                            BenefitCode = it.BenefitCode,
                            BenefitContent = it.Benefit.Content
                        }).ToList(),
                        GenderLimit = t.GenderLimit,
                        CredentialLimits = tcg.Select(it => new GetTaskInfoQueryResultCredentialLimit
                        {
                            TypeCode = it.TypeCode,
                            TypeContent = it.Type.Content
                        }).ToList(),
                        ProvinceCode = t.ProvinceCode,
                        ProvinceContent =t.Province.Content,
                        CityCode = t.CityCode,
                        CityContent = t.City.Content,
                        AddressName = t.AddressName,
                        AddressDetail = t.AddressDetail,
                        Latitude = t.Latitude,
                        Longitude = t.Longitude,
                        UserCount = tug.Count(),
                        Status = t.Status,
                        BeginTime = t.BeginTime,
                        EndTime = t.EndTime,
                        ReleaseStatus = t.ReleaseStatus,
                        CheckReceiveStatus = t.CheckReceiveStatus,
                        CreatedTime = t.CreatedTime,
                        RecommendStatus = t.RecommendStatus,
                        SettlementStatus = t.SettlementStatus
                    };
            return request.PageModel.GetPagedListAsync(s, cancellationToken);
        }
    }
}