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.User.Application
{
    /// <summary>
    /// 查询角色用户列表
    /// </summary>
    public class GetRoleUserInfosQueryHandler(
            IRepository<Role> repRole,
            IRepository<UserInfo> repUserInfo,
            IRepository<UserInfoRole> repUserInfoRole
        ) : IRequestHandler<GetRoleUserInfosQuery, List<GetRoleUserInfosQueryResultItem>>
    {
        private readonly IRepository<Role> repRole = repRole;
        private readonly IRepository<UserInfo> repUserInfo = repUserInfo;
        private readonly IRepository<UserInfoRole> repUserInfoRole = repUserInfoRole;

        /// <inheritdoc/>
        public async Task<List<GetRoleUserInfosQueryResultItem>> Handle(GetRoleUserInfosQuery request, CancellationToken cancellationToken)
        {
            var role = await repRole.AsQueryable().AsNoTracking()
                .Where(it => it.Id == request.RoleId)
                .Select(it => new
                {
                    it.UserType,
                })
                .FirstOrDefaultAsync(cancellationToken);
            if (role == null) throw Oops.Oh(EnumErrorCodeType.s404, "该角色");
            var userInfoIds = await repUserInfoRole.AsQueryable().AsNoTracking()
                .Where(it => it.RoleId == request.RoleId)
                .Select(it => it.UserInfoId)
                .ToListAsync(cancellationToken);
            var userInfos = await repUserInfo.AsQueryable().AsNoTracking()
                .Include(it => it.UserAuth)
                .Where(it => it.Type == role.UserType)
                .Select(it => new GetRoleUserInfosQueryResultItem
                {
                    Id = it.Id,
                    Name = it.UserAuth.Name,
                    UserName = it.UserAuth.UserName,
                })
                .ToListAsync(cancellationToken);
            foreach (var userInfo in userInfos)
            {
                userInfo.IsChecked = userInfoIds.Contains(userInfo.Id);
            }
            return userInfos;
        }
    }
}