using learun.iapplication;
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;

namespace learun.application
{
	/// <summary>
	/// 版 本 EasyCode EC管理后台
	/// Copyright (c) 2019-present EC管理有限公司
	/// 创建人：tobin
	/// 日 期：2019.09.25
	/// 描 述：附件管理
	/// </summary>
	public class AnnexesFileService : ServiceBase
	{
		#region 属性 构造函数

		private readonly string fieldSql;

		/// <summary>
		///
		/// </summary>
		public AnnexesFileService()
		{
			fieldSql = @"
                   t.F_Id,
                   t.F_FolderId,
                   t.F_FileName,
                   t.F_FilePath,
                   t.F_FileSize,
                   t.F_FileExtensions,
                   t.F_FileType,
                   t.F_DownloadCount,
                   t.F_CreateDate,
                   t.F_CreateUserId,
                   t.F_CreateUserName
                    ";
		}

		#endregion 属性 构造函数

		#region 获取数据

		/// <summary>
		/// 获取实体列表
		/// </summary>
		/// <param name="folderId">文件夹值</param>
		/// <returns></returns>
		public Task<IEnumerable<AnnexesFileEntity>> GetList(string folderId)
		{
			StringBuilder strSql = new StringBuilder();
			strSql.Append("SELECT " + fieldSql + " FROM LR_Base_AnnexesFile t WHERE t.F_FolderId = @folderId Order By t.F_CreateDate ");
			return this.BaseRepository().FindList<AnnexesFileEntity>(strSql.ToString(), new { folderId });
		}

		/// <summary>
		/// 获取附件名称集合
		/// </summary>
		/// <param name="folderId">主键值</param>
		/// <returns></returns>
		public async Task<string> GetFileNames(string folderId)
		{
			string res = "";
			IEnumerable<AnnexesFileEntity> list = await GetList(folderId);
			foreach (var item in list)
			{
				if (!string.IsNullOrEmpty(res))
				{
					res += ",";
				}
				res += item.F_FileName;
			}
			return res;
		}

		/// <summary>
		/// 获取附件实体
		/// </summary>
		/// <param name="keyValue">主键</param>
		/// <returns></returns>
		public Task<AnnexesFileEntity> GetEntity(string keyValue)
		{
			return this.BaseRepository().FindEntityByKey<AnnexesFileEntity>(keyValue);
		}

		#endregion 获取数据

		#region 提交数据

		/// <summary>
		/// 保存数据实体
		/// </summary>
		/// <param name="folderId">附件夹主键</param>
		/// <param name="annexesFileEntity">附件实体数据</param>
		public async Task SaveEntity(string folderId, AnnexesFileEntity annexesFileEntity)
		{
			annexesFileEntity.F_CreateDate = DateTime.Now;
			annexesFileEntity.F_FolderId = folderId;
			await this.BaseRepository().Insert(annexesFileEntity);
		}

		/// <summary>
		/// 删除附件
		/// </summary>
		/// <param name="fileId">文件主键</param>
		public async Task DeleteEntity(string fileId)
		{
			await this.BaseRepository().DeleteAny<AnnexesFileEntity>(new { F_Id = fileId });
		}

		#endregion 提交数据
	}
}