package com.qxueyou.scc.controller;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import javax.servlet.http.HttpServletResponse;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;

import com.qxueyou.scc.base.model.FileMeta;
import com.qxueyou.scc.base.model.Result;
import com.qxueyou.scc.teach.res.service.IFileService;

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;

/**
 * 文件上传控制器
 * 
 * @author xiadehu
 */
@Api(tags="文件上传通用接口")
@Controller
@RequestMapping(value = "/base/file")
public class FileController {

	private final Logger log = LogManager.getLogger("FileController");

	@Autowired
	IFileService fileService;

	/**
	 * 通用上传接口
	 * 
	 * @TODO : 目前缺少对 各模块文件个数、文件格式、文件大小的上传控制,统一增加在configFileModule表里面即可实现 1 图片； 2 文档  3 视频 4 音频
	 * @param response
	 * @return
	 */
	@ApiOperation(value="通用上传接口", notes="目前缺少对 各模块文件个数、文件格式、文件大小的上传控制,统一增加在configFileModule表里面即可实现 1 图片； 2 文档  3 视频 4 音频")
	@RequestMapping(value = "/upload", headers = "content-type=multipart/*", method = RequestMethod.POST)
	public @ResponseBody List<FileMeta> doUpload(MultipartHttpServletRequest request, HttpServletResponse response) {

		// 2.循环取得文件
		Iterator<String> itr = request.getFileNames();
		MultipartFile mpf = null;
		List<FileMeta> files = new ArrayList<FileMeta>(2);
		FileMeta fileMeta = null;

		while (itr.hasNext()) {
			// 2.从request中取的下一个 MultipartFile
			mpf = request.getFile(itr.next());

			// 2.2 创建一个FileMeta
			fileMeta = new FileMeta();
			try {
				Result uploadResult = fileService.doUpload(mpf.getInputStream(), mpf.getOriginalFilename());

				fileMeta.setFileId(uploadResult.getDataT("fileId"));
				fileMeta.setPath(uploadResult.getDataT("path"));
			} catch (Exception e) {
				String desp = e.getMessage();
				desp = desp.length() > 120 ? desp.substring(0, 120) : desp;
				log.error("上传模块解析出错：" + e);
			}

			fileMeta.setFileName(mpf.getOriginalFilename());
			fileMeta.setFileSize(mpf.getSize() / 1024 + " Kb");
			fileMeta.setFileType(mpf.getContentType());

			// 2.4 add to files
			files.add(fileMeta);
		}

		return files;
	}
}