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

namespace ApiTools.UserServer.Application
{
    /// <summary>
    /// 查询渠道分页列表数据
    /// </summary>
    public class ChannelQueryHandler(
            IRepository<Channel> rep
        ) :
        IRequestHandler<GetChannelsQuery, GetChannelsQueryResult>
    {
        private readonly IRepository<Channel> rep = rep;

        /// <summary>
        /// 查询渠道分页列表数据
        /// </summary>
        /// <param name="request"></param>
        /// <param name="cancellationToken"></param>
        /// <returns></returns>
        public Task<GetChannelsQueryResult> Handle(GetChannelsQuery request, CancellationToken cancellationToken)
        {
            var q = rep.AsQueryable().AsNoTracking()
                .ProjectToType<GetChannelsQueryResultItem>();
            return request.PageModel.GetPagedListAsync<GetChannelsQueryResult, GetChannelsQueryResultItem>(q, cancellationToken);
        }
    }
}