login via github implemented

package.json

@@ -16,6 +16,7 @@
     "cookie-parser": "~1.4.4",
     "debug": "~2.6.9",
     "express": "~4.16.1",
+    "express-session": "^1.17.1",
     "hbs": "^4.1.1",
     "http-errors": "~1.6.3",
     "mocha": "^8.0.1",

routes/users/githubAPI.js

@@ -0,0 +1,72 @@
+const express = require('express');
+const router = express.Router()
+const axios = require('axios')
+var session = require('express-session')
+const {github} = require('./../../config/config')
+var clientId=github.clientId
+var clientSecret=github.clientSecret
+
+router.get('/auth',(req,res)=>{
+    const body = {
+      client_id: clientId,
+      client_secret: clientSecret,
+      code: req.query.code,
+      refresh_token:req.cookies["refresh"]
+    };
+
+    const opts = { headers: { accept: 'application/json' } };
+    axios.post(`https://github.com/login/oauth/access_token`, body, opts).
+      then(res =>{
+        return {token:res.data['access_token'],refresh:res.data['refresh_token']}
+      })
+      .then(tokens => {
+        token = tokens.token;
+        refresh = tokens.refresh;
+        oauth_token=token;
+        remember=false;
+        if(remember){
+          res.cookie('githubLogin',true)
+          res.cookie('token',token,{expires: new Date(Date.now() +  + 8*60*60*1000)}) // token expires in 10 years time
+          res.cookie('refresh',refresh,{expires: new Date(Date.now() +  + 315360000000)})
+        }
+        else{
+          session({
+            secret: 'codebadge token',
+            resave: false,
+            saveUninitialized: true,
+            cookie: { secure: true }
+          })
+          res.cookie('token',token) // token expires when session ends
+          res.cookie('githubLogin',true)
+        }
+        let config = {
+          headers: {
+            "Authorization":`token ${oauth_token}`
+          }
+        }
+
+        axios
+          .get(`https://api.github.com/user`,config=config)
+          .then(resp => {
+            res.cookie('username',resp.data["login"],{expires: new Date(Date.now() +  + 315360000000)}) //saves username for upcoming queries of logedin user
+            if(resp.data.type=="User"){
+              res.redirect('http://localhost:3000/user')
+            }
+            else{
+              res.redirect(`http://localhost:3000/org?username=${resp.data["login"]}`)
+            }
+          })
+          .catch(err=>res.sendStatus(400).json({"error":err}))
+
+      }).
+      catch(err => {
+        res.status(500).json({"error":err});
+      });
+  })
+
+  router.get('/',(req,res)=>{
+      res.redirect(`https://github.com/login/oauth/authorize?client_id=${clientId}&scope=user`);
+  })
+
+
+module.exports = router

routes/users/index.js

@@ -1,7 +1,9 @@
 const express = require('express');
 const router = express.Router();
 const codebadgeLocalAPI = require('./codebadge-local');
+const githubAPI = require('./githubAPI');
 
+router.use('/github',githubAPI);
 router.use('/codebadge',codebadgeLocalAPI);
 
 module.exports = router;