background.js

console.log("Background is running");


function sendMessagetToGetInfo(url, id, xcsrf){

  chrome.tabs.query({url: "https://www.codechef.com/*/submit/*", title : "CodeChef | Competitive Programming | Participate & Learn | CodeChef"}, function(tabs) {

    // console.log(tabs);
    var problem_details = {};
    var problem_url = url;
    chrome.tabs.sendMessage(tabs[0].id, {greeting: "hello"}, function(response) {

      console.log('preoblem details', response);

      problem_details = response;
      //  console.log("problem_details ", problem_details);
      checkResult(url, id, xcsrf, problem_details, problem_url);

    });
     
      
    });
  
}

function checkResult(url, id, xcsrf, problem_details, problem_url){
  $.ajax({
 
    url: url,

    dataType: "json",

    headers: {
      "x-csrf-token" : xcsrf
    },

    /*
    * function to handle success of XHR request
    * check if the response shows verdict available
    * if verdict available then notify user else
    * user setTimeout function to do recursive call
    * to this function after some seconds.
    */
    success: function(data, status, XHR){
        console.log(status, data.result_code);

        if(data.result_code == "wait"){
          checkResult(url, id, xcsrf, problem_details, problem_url);
        }
        else{
           var notify_details  = {
            type: "list",
            title: "Problem Name: "+problem_details.name+".",
            message: "Verdict: "+data.result_code+".",
            iconUrl: "logo.jpg",
            items: [{title: "Verdict: ", message: ""+data.result_code+""},
                    { title: "Id: ", message: ""+problem_details.id+""},
                    { title: "Time: ", message: ""+data.time+""}]
           }

           chrome.notifications.create("Hello , you have a notification here", notify_details,
              function(details){ console.log(details); }
            )

          //  chrome.notifications.onButtonClicked.addListener(function(problem_url){
          //   console.log(problem_url);
          //   chrome.tabs.create({
          //     url : problem_url
          //   });
          //  });
        }

    },

    /* function to handle errors*/
    error: function(XHR, status, error){
      console.log(error, status, XHR);
    }
});
}




chrome.webRequest.onBeforeSendHeaders.addListener((details) =>{

    // check the URL from details object
    //  if the url matches the required codechef url then
    //  extract the submission id from the url
    const url = new URL(details.url);
    // console.log(url);
   

    if(url.search.length > 0){
    
    
      let id = url.searchParams.get('solution_id');
      let xcsrf =  details.requestHeaders[2].value;

      
      var store={};
      store[id]=id;
    

      // check if a request with that submission id is already present in your storage
      //  The above check is necessary because codechef repeatedly sends this
      //  request until the result is obtained.

    
            
      chrome.storage.sync.get(id,function(key_values){
     
        if(Object.keys(key_values).length!=0)
        {
            // console.log('submission id already saved',key_values[id])
        }
        else{
          chrome.storage.sync.set(store, function() {

            console.log('Value is now set to ' + id);
            
          });
          sendMessagetToGetInfo(url, id, xcsrf);
        }
      })
    }
    

},
{
    urls : ["https://www.codechef.com/api/ide/submit*"],
    types : ["xmlhttprequest"]
},
["requestHeaders"]);