var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var session = require('express-session');
var multer = require('multer');
var fs = require("fs");
import express from "express";
import path from "path";
import { getFileList, getFilePath, getFolderList, getCurFolderPath} from "./Server";
import { createFolder, removeFolder, removeFiles, joinFile } from "./file";
var app = express();
app.engine( '.html', require('ejs').renderFile );  // 注册html模板引擎 
app.set('views', path.join(__dirname, '../web/views'));
app.set('view engine', 'html');
app.set('view options', { filename: "views" });
// app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser("admin"));
app.use(session());
app.use(express.static(path.join(__dirname, '../web/views')));
// app.get('/',function(req,res){
//    res.render('index',{helloWorld: 'hello,world'});
// })

app.post('/readFolder',(req,res)=>{
  console.log(req.body);
})

app.get('/folderList',(req,res)=>{
  let result = getFolderList();
  console.log('我是服务器拿到的1：result',result);
  res.send(result);
})

app.get("/fileList",(req,res)=>{
  let result = getFileList(req.query.folderName);
  console.log('获取fileList：', req.query,result);

  res.send(result);
})

app.get("/create",(req,res)=>{
  // let filepath = path.resolve(getFilePath(),req.query.folderName);
  // let filepath = `${getFilePath()}/${req.query.folderName}`;
  let filepath = joinFile(getFilePath(),req.query.folderName)
  console.log("create", filepath)
  let result = createFolder(filepath);
  res.send(result);
})

app.get("/deleteFolder",(req,res)=>{
  // let filepath = path.resolve(getFilePath(),req.query.folderName);
  let filepath = joinFile(getFilePath(),req.query.folderName)
  console.log("delete folder:", filepath)
  removeFolder(filepath);
  res.send(true);
})


app.get("/download",(req,res)=>{
  let fileName = req.query.fileName;
  let folderName = req.query.folderName;
  let curpath = folderName+"/"+fileName;
  let currFile = `${getFilePath()}/${curpath}`
  let fReadStream;
  
  fs.exists(currFile,function(exist) {
    if(exist){
        res.set({
            "Content-type":"application/octet-stream",
            "Content-Disposition":"attachment;filename="+encodeURI(fileName)
        });
        fReadStream = fs.createReadStream(currFile);
        fReadStream.on("data",(chunk) => res.write(chunk,"binary"));
        fReadStream.on("end",function () {
            res.end();
        });
    }else{
        res.set("Content-type","text/html");
        res.send("file not exist!");
        res.end();
    }
});
})

var storage = multer.diskStorage({
  destination: function (req, file, callback) {
      let toPath = getCurFolderPath();
      callback(null,toPath);
  },
  filename: function (req, file, callback) {
      callback(null,file.originalname);
  }
});
var upload = multer({ storage: storage });
app.post("/upload",upload.single('avatar'),(req,res,next)=>{
  res.setHeader("Access-Control-Allow-Origin", "*"); 
  res.setHeader("Access-Control-Allow-Methods", "POST, GET");
  // res.setHeader("Access-Control-Allow-Credentials",true);
  // res.setHeader("Access-Control-Allow-Headers", "Content-Type");
  // res.setHeader("Access-Control-Allow-Headers", "application/octet-stream"); 
  
  if(req.file){
    res.send({result:true})
  }else{
    res.send({result:false})
  }
})

app.post("/deleteFiles",(req,res,next)=>{
  let folderName = req.body.folderName? joinFile(getFilePath(),req.body.folderName):getFilePath();
  let fileNames = req.body.fileNames;
  removeFiles(folderName,fileNames)
  res.send(true);
})


app.use(function(req, res, next) {
    var err:any = new Error('Not Found');
    err.status = 404;
    next(err);
  });
  
// error handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};

// render the error page
res.status(err.status || 500);
res.render('error');
});
  
// export function getFileList(){
//   let p = path.dirname(require.main.filename);
//   console.log(".....",dirname)
// }
export default app;