Login function using puppeteer

@@ -7,6 +7,7 @@
     "@testing-library/react": "^13.2.0",
     "@testing-library/user-event": "^13.5.0",
     "localforage": "^1.10.0",
+    "puppeteer": "^14.1.1",
     "react": "^18.1.0",
     "react-dom": "^18.1.0",
     "react-router-dom": "^6.3.0",

 function login(id, pw) {
-  return `I got data { id:"${id}"  pw:"${pw}" }`;
+  const crawler = async() => {
+      try{
+          const browser = await puppeteer.launch({headless: false, args:['--window-size=1920,1080']});
+          // for observing the process of login, headless -> false
+          const page = await browser.newPage();
+          await page.setViewport({
+              width:1920,
+              height:1080
+          })
+          await page.goto('https://e-campus.khu.ac.kr/xn-sso/login.php?auto_login=&sso_only=&cvs_lgn=&return_url=https%3A%2F%2Fe-campus.khu.ac.kr%2Fxn-sso%2Fgw-cb.php%3Ffrom%3D%26login_type%3Dstandalone%26return_url%3Dhttps%253A%252F%252Fe-campus.khu.ac.kr%252Flogin%252Fcallback');
+          await page.evaluate(() => {
+              document.querySelector("#login_user_id").value = id
+              document.querySelector("#login_user_password").value = pw
+              document.querySelector('#form1 > div > div.login_btn > a > span').click();
+          })
+
+      }catch(err){
+          console.log(err)
+      }
+      if(page.url() === 'https://e-campus.khu.ac.kr/xn-sso/login.php?auto_login=&sso_only=&cvs_lgn=&return_url=https%3A%2F%2Fe-campus.khu.ac.kr%2Fxn-sso%2Fgw-cb.php%3Ffrom%3D%26login_type%3Dstandalone%26return_url%3Dhttps%253A%252F%252Fe-campus.khu.ac.kr%252Flogin%252Fcallback'){
+        return "the account id or password you entered is incorrect";}
+      else {
+        return `I got data { id:"${id}"  pw:"${pw}" }`;
+      }
+  }
+  crawler();
 }
 
 export { login };
+
+