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

namespace FlexJobApi.UserServer.Application
{
    /// <summary>
    /// 获取运营端用户分页列表
    /// </summary>
    public class GetOperationUserInfosQueryHandler(
            IRepository<User> repUser,
            IRepository<UserRole> repUserRole
        ) : IRequestHandler<GetOperationUserInfosQuery, PagedListQueryResult<GetOperationUserInfosQueryResultItem>>
    {
        private readonly IRepository<User> repUser = repUser;
        private readonly IRepository<UserRole> repUserRole = repUserRole;

        /// <inheritdoc/>
        public async Task<PagedListQueryResult<GetOperationUserInfosQueryResultItem>> Handle(GetOperationUserInfosQuery request, CancellationToken cancellationToken)
        {
            var result = await request.PageModel.GetPagedListAsync<User, GetOperationUserInfosQueryResultItem>(
                q =>
                {
                    q = q.OrderByDescending(it => it.Level).ThenByDescending(it => it.CreatedTime)
                        .Where(it => it.Type == EnumUserType.Operation && it.Level != 999);
                    if (request.Keywords.IsNotNull())
                    {
                        q = q.Where(it =>
                            it.Name.Contains(request.Keywords)
                            || it.UserName.Contains(request.Keywords)
                            || it.PhoneNumber.Contains(request.Keywords)
                            || it.Remark.Contains(request.Keywords));
                    }
                    return q;
                }, null, cancellationToken);
            if (result.Data.Any())
            {
                var ids = result.Data.DistinctSelect(it => it.Id);
                var userRoles = await repUserRole.AsQueryable().AsNoTracking()
                    .Include(it => it.Role)
                    .Where(it => ids.Contains(it.UserId))
                    .Select(it => new GetOperationUserInfosQueryResultItemRole
                    {
                        UserId = it.UserId,
                        Id = it.RoleId,
                        Name = it.Role.Name
                    })
                    .ToListAsync(cancellationToken);
                foreach (var item in result.Data)
                {
                    item.Roles = userRoles.Where(it => it.UserId == item.Id).ToList();
                }
            }
            return result;
        }
    }
}