package com.ibeetl.admin.core.web;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URLEncoder;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.ModelAndView;

import com.ibeetl.admin.core.entity.CoreOrg;
import com.ibeetl.admin.core.entity.CoreUser;
import com.ibeetl.admin.core.file.FileItem;
import com.ibeetl.admin.core.file.FileService;
import com.ibeetl.admin.core.service.CorePlatformService;
import com.ibeetl.admin.core.util.FileUtil;

@Controller
public class FileSystemContorller {
	private final Log log = LogFactory.getLog(this.getClass());
	
	@Autowired
	CorePlatformService platformService ;
	
	private static final String MODEL = "/core/file";
	
	/*附件类操作*/
	@PostMapping(MODEL + "/uploadAttachment.json")
    @ResponseBody
    public JsonResult uploadFile(@RequestParam("file") MultipartFile file,String batchFileUUID,String bizType,String bizId) throws IOException {
        if(file.isEmpty()) {
            return JsonResult.fail();
        }
        CoreUser user = platformService.getCurrentUser();
        CoreOrg  org = platformService.getCurrentOrg();
        FileItem fileItem = fileService.createFileItem(file.getOriginalFilename(), bizType, bizId, user.getId(), org.getId(), batchFileUUID,null);
        OutputStream os = fileItem.openOutpuStream();
        FileUtil.copy(file.getInputStream(), os);
        return JsonResult.success(fileItem);
    }
    
    @PostMapping(MODEL + "/deleteAttachment.json")
    @ResponseBody
    public JsonResult deleteFile(Long fileId,String batchFileUUID ) throws IOException {
        fileService.removeFile(fileId, batchFileUUID);
        return JsonResult.success();
    }
    
    @GetMapping(MODEL + "/download/{fileId}/{batchFileUUID}/{name}")
    public ModelAndView download(HttpServletResponse response,@PathVariable Long fileId,@PathVariable  String batchFileUUID ) throws IOException {
        FileItem item = fileService.getFileItemById(fileId,batchFileUUID);
        response.setHeader("Content-Disposition", "attachment; filename="+URLEncoder.encode(item.getName(),"UTF-8"));
        item.copy(response.getOutputStream());
        return null;
    }
    
	
	/*execl 导入导出*/
	
	@Autowired
	FileService fileService;
	@GetMapping(MODEL + "/get.do")
	public ModelAndView index(HttpServletResponse response,String id) throws IOException {
	     String path = id;
		 response.setContentType("text/html; charset = UTF-8");  
		 FileItem fileItem = fileService.loadFileItemByPath(path);
		 response.setHeader("Content-Disposition", "attachment; filename="+java.net.URLEncoder.encode(fileItem.getName(), "UTF-8"));  
		 fileItem.copy(response.getOutputStream());
		 if(fileItem.isTemp()) {
		     fileItem.delete();
		 }
		 return null;
	}
	
	@GetMapping(MODEL + "/downloadTemplate.do")
    public ModelAndView dowloadTemplate(HttpServletResponse response,String path) throws IOException {
         response.setContentType("text/html; charset = UTF-8");  
         int start1 = path.lastIndexOf("\\");
         int start2 = path.lastIndexOf("/");
         if(start2>start1) {
             start1 = start2;
         }
         String file = path.substring(start1+1);
         response.setHeader("Content-Disposition", "attachment; filename="+java.net.URLEncoder.encode(file,"UTF-8"));  
         InputStream input = Thread.currentThread().getContextClassLoader().getResourceAsStream("excelTemplates/"+path);
         FileUtil.copy(input, response.getOutputStream());
         return null;
    }
	
   @GetMapping(MODEL + "/simpleUpload.do")
    public ModelAndView simpleUploadPage(String uploadUrl,String templatePath,String fileType) throws IOException {
       ModelAndView view = new ModelAndView("/common/simpleUpload.html");
       view.addObject("uploadUrl",uploadUrl);
       view.addObject("templatePath",templatePath);
       view.addObject("fileType",fileType);
      
       return view;
   }
}