update: make contests fetching async

Author: SysSn13

services/contests.js

@@ -20,7 +20,6 @@ const fetchContestRankings = async function (contestSlug) {
         // TODO: remove hard coded lines
 
         let pages = Math.floor(response.user_num / 25)
-        pages = 2
         for (let i = 1; i <= pages; i++) {
             console.log("fetching page no.: " + i)
             let res = await fetch(`https://leetcode.com/contest/api/ranking/${contestSlug}/?pagination=${i}&region=global`);

services/scheduling.js

@@ -26,10 +26,10 @@ const fetchNow = async function(){
     let contestList = await fetchContest()
     if(!contestList)
         return
-    for(let i=0;i<contestList.length;i++){
-        let endTime = contestList[i].startTime*1000 + contestList[i].duration*1000
+    let promises = contestList.map(async (contest)=>{
+        let endTime = contest.startTime*1000 + contest.duration*1000
         if(Date.now()> endTime)
-            await getContestRankings(contestList[i].titleSlug)
-    }
+            await getContestRankings(contest.titleSlug)
+    })
 }
 exports.fetchAllContests = fetchNow