using FlexJobApi.Core;
using Furion.DatabaseAccessor;
using Furion.FriendlyException;
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>
    /// 任务人员命令处理器
    /// </summary>
    public class TaskUserCommandHandler(
            IRepository<TaskInfoUser> rep,
            IRepository<TaskUserCollect> repTaskUserCollect
        ) :
        IRequestHandler<CollectTaskCommand, int>,
        IRequestHandler<ClearTaskCollectCommand, int>,
        IRequestHandler<SetTaskUserHireCommand, Guid>,
        IRequestHandler<SetTaskUserArrangeCommand, Guid>
    {
        private readonly IRepository<TaskInfoUser> rep = rep;
        private readonly IRepository<TaskUserCollect> repTaskUserCollect = repTaskUserCollect;

        /// <summary>
        /// 收藏任务
        /// </summary>
        /// <param name="request"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<int> Handle(CollectTaskCommand request, CancellationToken cancellationToken)
        {
            var logier = JwtUtils.GetCurrentLogier();
            var collects = await repTaskUserCollect.AsQueryable().AsNoTracking()
                .Where(it => request.Ids.Contains(it.TaskInfoId) && it.UserId == logier.Id)
                .ToListAsync(cancellationToken);
            if (request.IsCollect)
            {
                var addIds = request.Ids.Where(it => !collects.Any(c => c.TaskInfoId == it)).ToList();
                foreach (var addId in addIds)
                {
                    var entity = new TaskUserCollect
                    {
                        TaskInfoId = addId,
                        UserId = logier.Id
                    };
                    await repTaskUserCollect.InsertAsync(entity);
                }
                return addIds.Count;
            }
            else
            {
                await repTaskUserCollect.DeleteAsync(collects);
                return collects.Count;
            }
        }

        /// <summary>
        /// 清空已停止的任务收藏
        /// </summary>
        /// <param name="request"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<int> Handle(ClearTaskCollectCommand request, CancellationToken cancellationToken)
        {
            var logier = JwtUtils.GetCurrentLogier();
            var entities = await repTaskUserCollect.AsQueryable()
                .Where(it => it.TaskInfo.ReleaseStatus == EnumTaskReleaseStatus.Stopped && it.UserId == logier.Id)
                .ToListAsync(cancellationToken);
            if (entities.IsNotNull())
            {
                foreach (var entity in entities)
                {
                    await repTaskUserCollect.DeleteAsync(entity);
                }
            }
            return entities.Count;
        }

        /// <summary>
        /// 任务录用
        /// </summary>
        /// <param name="request"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<Guid> Handle(SetTaskUserHireCommand request, CancellationToken cancellationToken)
        {
            var logier = JwtUtils.GetCurrentLogier();
            var entity = await rep.AsQueryable()
                .Include(it => it.EnterpriseEmployee)
                .Where(it =>
                    it.TaskInfo.EnterpriseId == logier.EnterpriseId
                    && it.Id == request.Id)
                .FirstOrDefaultAsync(cancellationToken);
            if (entity == null) throw Oops.Oh(EnumErrorCodeType.s404, "报名信息");
            if (entity.HireStatus == EnumTaskUserHireStatus.Pass) throw Oops.Oh(EnumErrorCodeType.s510, "灵工已录用");
            entity.HireStatus = request.HireStatus;
            if (entity.HireStatus == EnumTaskUserHireStatus.Pass)
            {
                entity.HireTime = DateTime.Now;
                if (entity.EnterpriseEmployee.EnterpriseSignContractStatus == EnumTaskUserSignContractStatus.Pass)
                {
                    entity.ArrangeStatus = EnumTaskUserArrangeStatus.Wait;
                }
            }
            await rep.UpdateAsync(entity);
            return entity.Id;
        }

        /// <summary>
        /// 任务安排
        /// </summary>
        /// <param name="request"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public async Task<Guid> Handle(SetTaskUserArrangeCommand request, CancellationToken cancellationToken)
        {
            var logier = JwtUtils.GetCurrentLogier();
            var entity = await rep.AsQueryable()
                .Include(it => it.TaskInfo)
                .Include(it => it.EnterpriseEmployee)
                .Where(it =>
                    it.TaskInfo.EnterpriseId == logier.EnterpriseId
                    && it.Id == request.Id)
                .FirstOrDefaultAsync(cancellationToken);
            if (entity == null) throw Oops.Oh(EnumErrorCodeType.s404, "报名信息");
            if (entity.EnterpriseEmployee.EnterpriseSignContractStatus != EnumTaskUserSignContractStatus.Pass) throw Oops.Oh(EnumErrorCodeType.s510, "灵工未签约");
            if (entity.ArrangeStatus == EnumTaskUserArrangeStatus.Complete) throw Oops.Oh(EnumErrorCodeType.s510, "灵工已安排");
            entity.ArrangeStatus = request.ArrangeStatus;
            if (entity.ArrangeStatus == EnumTaskUserArrangeStatus.Complete)
            {
                entity.ArrangeTime = DateTime.Now;
                entity.CheckReceiveStatus = EnumTaskCheckReceiveStatus.WaitSubmit;
                entity.TaskInfo.Status = EnumTaskStatus.Complete;
                entity.TaskInfo.CheckReceiveStatus = EnumTaskCheckReceiveStatus.WaitSubmit;
            }
            await rep.UpdateAsync(entity);
            return entity.Id;
        }
    }
}