using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using GxPress.EnumConst;
using GxPress.Repository.Interface.AppChannel;
using GxPress.Result.AppChannel;
using GxPress.Service.Interface.AppChannel;
using GxPress.Common.Tools;
using GxPress.Result.Media;
using GxPress.Request.AppChannel;
using GxPress.Repository.Interface.Media;
using System.Linq;
using GxPress.Common.Page;

namespace GxPress.Service.Implement.AppChannel
{
    /// <summary>
    /// app频道
    /// </summary>
    public class AppChannelService : IAppChannelService
    {
        private readonly IChannelCategoryMediaRepository channelCategoryMediaRepository;
        private readonly IChannelCategoryRepository channelCategoryRepository;
        private readonly IAppChannelRepository appChannelRepository;
        private readonly IMediaRepository mediaRepository;
        public AppChannelService(IChannelCategoryMediaRepository channelCategoryMediaRepository, IChannelCategoryRepository channelCategoryRepository, IAppChannelRepository appChannelRepository, IMediaRepository mediaRepository)
        {
            this.channelCategoryMediaRepository = channelCategoryMediaRepository;
            this.channelCategoryRepository = channelCategoryRepository;
            this.appChannelRepository = appChannelRepository;
            this.mediaRepository = mediaRepository;
        }
        /// <summary>
        /// 获取App频道
        /// </summary>
        /// <returns></returns>
        public async Task<IEnumerable<AppChannelModelResult>> GetAppChannelsAsync()
        {
            var result = new List<AppChannelModelResult>();
            //递归频道
            foreach (int v in Enum.GetValues(typeof(AppChannelConst)))
            {
                var constEnum = (AppChannelConst)v;
                var appChannelModelResult = new AppChannelModelResult()
                {
                    Name = constEnum.GetDescriptionOriginal(),
                    Id = constEnum,
                    Items = await appChannelRepository.GetAllAsync(constEnum)
                };
                result.Add(appChannelModelResult);
            }
            return result;
        }
        /// <summary>
        /// 查询 获取频道分类
        /// </summary>
        /// <returns></returns>
        public async Task<IEnumerable<ChannelCategoryResult>> GetAllAsync(int appChannelId)
        {
            var result = await channelCategoryRepository.GetAllAsync(appChannelId);
            foreach (var item in result)
            {
                if (!item.IsChildren)
                    item.MediaIds = await channelCategoryMediaRepository.GetAllAsync(item.Id);
                else
                {
                    foreach (var category in item.Children)
                    {
                        if (!category.IsChildren)
                            category.MediaIds = await channelCategoryMediaRepository.GetAllAsync(item.Id);
                    }
                }
            }
            return result;
        }

        /// <summary>
        /// 根据app频道分类id获取媒体分页数据
        /// </summary>
        /// <returns></returns>
        public async Task<PagedList<MediaCathedraResult>> GetChannelCategoryMediaPageAsync(AppChannelSearchRequest request)
        {
            //获取标签
            var ids = await channelCategoryMediaRepository.GetAllAsync(request.CategoryId);
            request.Ids = ids.ToList();
            return await mediaRepository.GetAppChannelsAsync(request);
        }


    }
}