using learun.iapplication;
using learun.util;
using Microsoft.AspNetCore.Mvc;
using System.IO;
using System.Text;
using System.Threading.Tasks;

namespace EC.Web.Areas.LR_SystemModule.Controllers
{
	/// <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：2020.03.03
	/// 描 述：行政区域
	/// </summary>
	[Area("LR_SystemModule")]
	public class AnnexesController : MvcControllerBase
	{
		private readonly AnnexesFileIBLL _annexesFileIBLL;

		public AnnexesController(AnnexesFileIBLL annexesFileIBLL)
		{
			_annexesFileIBLL = annexesFileIBLL;
		}

		#region 视图功能

		/// <summary>
		/// 上传列表页面
		/// </summary>
		/// <returns></returns>
		[HttpGet]
		public IActionResult UploadForm()
		{
			return View();
		}

		/// <summary>
		/// 下载列表页面
		/// </summary>
		/// <returns></returns>
		[HttpGet]
		public IActionResult DownForm()
		{
			return View();
		}

		#region 文件预览

		/// <summary>
		/// 文件预览
		/// </summary>
		/// <returns></returns>
		[HttpGet]
		public IActionResult PreviewForm()
		{
			return View();
		}

		#endregion 文件预览

		#endregion 视图功能

		#region 提交数据

		/// <summary>
		/// 上传附件分片数据
		/// </summary>
		/// <param name="fileGuid">文件主键</param>
		/// <param name="chunk">分片序号</param>
		/// <param name="Filedata">文件数据</param>
		/// <returns></returns>
		[HttpPost]
		public IActionResult UploadAnnexesFileChunk(string fileGuid, int chunk, int chunks)
		{
			var files = Request.Form.Files;
			//没有文件上传，直接返回
			if (files[0].Length == 0 || string.IsNullOrEmpty(files[0].FileName))
			{
				return Fail("没有文件信息");
			}
			byte[] bytes = new byte[files[0].Length];
			MemoryStream ms = new MemoryStream();
			files[0].CopyTo(ms);
			ms.Flush();
			ms.Position = 0;
			ms.Read(bytes, 0, bytes.Length);
			ms.Close();
			ms.Dispose();
			_annexesFileIBLL.SaveChunkAnnexes(fileGuid, chunk, bytes);
			return Success("保存成功");
		}

		/// <summary>
		/// 移除附件分片数据
		/// </summary>
		/// <param name="fileGuid">文件主键</param>
		/// <param name="chunks">总分片数</param>
		/// <returns></returns>
		[HttpPost]
		public IActionResult RemoveAnnexesFileChunk(string fileGuid, int chunks)
		{
			_annexesFileIBLL.RemoveChunkAnnexes(fileGuid, chunks);
			return Success("移除成功");
		}

		/// <summary>
		/// 合并上传附件的分片数据(固定文件夹)
		/// </summary>
		/// <param name="folderId">附件夹主键</param>
		/// <param name="fileGuid">文件主键</param>
		/// <param name="fileName">文件名</param>
		/// <param name="chunks">文件总分片数</param>
		/// <returns></returns>
		[HttpPost]
		public async Task<IActionResult> MergeAnnexesFile(string folderId, string fileGuid, string fileName, int chunks)
		{
			bool res = await _annexesFileIBLL.SaveAnnexes(folderId, fileGuid, fileName, chunks);
			if (res)
			{
				return Success("保存文件成功");
			}
			else
			{
				return Fail("保存文件失败");
			}
		}

		/// <summary>
		/// 删除文件
		/// </summary>
		/// <param name="fileId">文件主键</param>
		/// <returns></returns>
		[HttpPost]
		public async Task<IActionResult> DeleteAnnexesFile(string fileId)
		{
			AnnexesFileEntity fileInfoEntity = await _annexesFileIBLL.GetEntity(fileId);
			await _annexesFileIBLL.DeleteEntity(fileId);
			//删除文件
			if (System.IO.File.Exists(fileInfoEntity.F_FilePath))
			{
				System.IO.File.Delete(fileInfoEntity.F_FilePath);
			}
			return Success("删除附件成功");
		}

		#endregion 提交数据

		#region 获取数据

		/// <summary>
		/// 下载文件
		/// </summary>
		/// <param name="fileId">文件id</param>
		/// <returns></returns>
		public async Task<IActionResult> DownAnnexesFile(string fileId)
		{
			var data = await _annexesFileIBLL.GetEntity(fileId);
			byte[] arr2 = FileHelper.Read(data.F_FilePath);
			return File(arr2, FileHelper.getContentType(data.F_FileType), data.F_FileName);
		}

		/// <summary>
		/// 获取附件列表
		/// </summary>
		/// <param name="folderId">附件夹主键</param>
		/// <returns></returns>
		[HttpGet]
		public async Task<IActionResult> GetAnnexesFileList(string folderId)
		{
			var data = await _annexesFileIBLL.GetList(folderId);
			return Success(data);
		}

		/// <summary>
		/// 获取附件夹信息
		/// </summary>
		/// <param name="folderId">附件夹主键</param>
		/// <returns></returns>
		[HttpGet]
		public async Task<IActionResult> GetFileNames(string folderId)
		{
			var data = await _annexesFileIBLL.GetFileNames(folderId);
			return Success(data);
		}

		#endregion 获取数据

		#region 预览附件

		/// <summary>
		/// 文件预览
		/// </summary>
		/// <param name="fileId">文件ID</param>
		/// <returns></returns>
		[HttpGet]
		public async Task<IActionResult> PreviewFile(string fileId)
		{
			var data = await _annexesFileIBLL.GetEntity(fileId);
			byte[] content = new byte[0];
			string fileExt;
			switch (data.F_FileType)
			{
				case "xls":
				case "xlsx":
					fileExt = "html";
					if (DirFileHelper.IsExistFile(data.F_FilePath))
					{
						content = Encoding.Default.GetBytes(ce.office.extension.ExcelHelper.ToHtml(data.F_FilePath));
					}
					break;

				case "docx":
					fileExt = "html";
					if (DirFileHelper.IsExistFile(data.F_FilePath))
					{
						content = Encoding.Default.GetBytes(ce.office.extension.WordHelper.ToHtml(data.F_FilePath));
					}
					break;

				case "jpg":
				case "gif":
				case "png":
				case "bmp":
				case "jpeg":
				case "txt":
				case "csv":
				case "html":
				case "pdf":
					fileExt = data.F_FileType;
					content = FileHelper.Read(data.F_FilePath);
					break;

				case "doc":
				case "ppt":
				case "pptx":
					fileExt = "txt";
					content = Encoding.Default.GetBytes("当前类型文件不支持预览！");
					break;

				default:
					fileExt = "txt";
					content = Encoding.Default.GetBytes("当前类型文件不支持预览！");
					break;
			}
			return File(content, FileHelper.getContentType(fileExt));
		}

		#endregion 预览附件
	}
}