backend update

index.js

@@ -5,25 +5,38 @@ const ws = require('ws');
 const redis = require('redis')
 
 //redis client
-const redis_client = redis.createClient()
-redis_client.on("error", function (error) {
+const redis_cli = redis.createClient()
+redis_cli.on("error", function (error) {
   console.error(error)
 })
 
+const outpath = ['sym', '']
+
 //HTTP server
 http.createServer(function (req, res) {
   const q = url.parse(req.url, true);
   let filename = "./public" + q.pathname;
   if (filename === "./public/") filename = "./public/index.html";
-  fs.readFile(filename, function(err, data) {
-    if (err) {
-      res.writeHead(404, {'Content-Type': 'text/html'});
-      return res.end("404 Not Found");
-    }
-    res.writeHead(200, {'Content-Type': 'text/html'});
-    res.write(data);
+  //q.pathname.split("/", 2)[1] === "sym" || )
+  if (function valid_path(){
+    for (let i = 0; i < outpath.length; i++) if (q.pathname.split("/", 2)[1] === outpath[i]) return true
+    return false
+  }() === true){
+    fs.readFile(filename, function(err, data) {
+      if (err) {
+        res.writeHead(404, {'Content-Type': 'text/html'});
+        return res.end("404 Not Found");
+      }
+      res.writeHead(200, {'Content-Type': 'text/html'});
+      res.write(data);
+      return res.end();
+    })
+  }else{
+    let url = redis_cli.hget("surl;"+q.pathname.split("/", 2)[1], "url")
+    res.writeHead(302, {'Location': 'http://adb.sh'});
+    //res.write(data);
     return res.end();
-  });
+  }
 }).listen(8080);
 
 //WS server
@@ -56,12 +69,15 @@ wss.on('connection', ws => {
     console.log(`Received message => ${message}`)
     let msg = `${message}`.split(";", 2)
     if (msg[0] === 'long_url') {
-      if (msg[1] === '') ws.send('error;url is empty')
-      if (msg[1].length > 2000) ws.send('error;your url is too big')
-      else{
+      if (function valid_url(){
+        if (msg[1] === ''){ws.send('error;url is empty'); return false}
+        else if (msg[1].length > 2000){ws.send('error;your url is too long'); return false}
+        else return true
+      }() === true){
         let ran_key = get_key(8)
         //redis_client.set("key", "value", redis.print)
-        ws.send('short_url;http://127.0.0.1'+ran_key)
+        redis_cli.hmset("surl;"+ran_key, "url", msg[1], "time", Date.now())
+        ws.send('short_url;http://127.0.0.1/'+ran_key)
       }
     }
     //ws.send('got your request: '+msg)