Show only pretest result when participating in virtual contest in Codeforces
// ==UserScript==
// @name CF-virtual-pretest
// @version 0.1.1
// @description Show only pretest result when participating in virtual contest in Codeforces
// @match *://codeforces.com/*
// @grant GM_getValue
// @grant GM_setValue
// @run-at document-start
// @namespace https://greasyfork.org/users/410786
// ==/UserScript==
(function(){
//OK:1,
//COMPILATION_ERROR:1,
//CRASHED:1, // example: https://codeforces.com/contest/566/submission/42421894
//FAILED:1, // example: https://codeforces.com/contest/566/submission/16877130
/*
const wrong_verdicts={
WRONG_ANSWER:1,
TIME_LIMIT_EXCEEDED:1,
RUNTIME_ERROR:1,
MEMORY_LIMIT_EXCEEDED:1,
IDLENESS_LIMIT_EXCEEDED:1,
0:0}*/
const pretest_passed_verdicts={
SKIPPED:1,
CHALLENGED:1, // aka hacked
0:0}
function getPassedTestCount(x){
return x.passedTestCount
}
//let csrf_token=Codeforces.getCsrfToken()
//let csrf_token=document.getElementsByName('X-Csrf-Token')[0].content
let csrf_token=undefined // TODO
function parseCsrfToken(html){
if(typeof(html)==='string')
html=$.parseHTML(html)
return html.find(z=>z.name=='X-Csrf-Token').content
}
let logged_out=false // When the user is taking part in a virtual contest, it
// isn't possible to get submission result directly.
async function isValid(submissionId){
//return true; // HACK TODO 403 in virtual participation
// Return whether a skipped submission has no
// wrong answer/run time error/memory limit exceeded/etc. test case, excluding hacks (can
// happen when the user cheated in the contest). Example
// https://codeforces.com/contest/1221/submission/60879848.
/*
let data=$.post('//codeforces.com/data/submitSource',{
submissionId: submissionId,
csrf_token:Codeforces.getCsrfToken()
})
*/
console.log('isValid',submissionId)
const options={
url: '//codeforces.com/data/submitSource',
type:'post',
data: {submissionId: submissionId},
headers: {'X-Csrf-Token': csrf_token},
dataType: 'json',
}
let data
try{
console.log('url = ',options)
data=await $.ajax(options)
}catch(e){
/*
if(e.status===403){
const match=location.href.match('://codeforces.com/contest/(\\d+)')
const url=match ? '://codeforces.com/contest/'+match[1]+'/my?force_get=1' : undefined
document.body.innerHTML=(
'Failed to load. If you are taking part in a virtual contest, please open ' +
(match? `<a href="${url}">${url}</a>`: url) +
' in an incognito window, then reload this page.'
)
}
*/
console.log('trying again with new csrf_token | error =',e)
options.headers['X-Csrf-Token']=csrf_token=parseCsrfToken(await $.get('/'))
console.log('new csrf=',csrf_token)
try{
data=await $.ajax(options)
}catch(e){
console.log('trying again after logging out | error =',e)
options.headers['X-Csrf-Token']=csrf_token=parseCsrfToken(
await $.ajax({
type:'get',
url:document.querySelector('[href$="logout"]').href,
headers:{'X-Csrf-Token': csrf_token},
}))
logged_out=true
console.log('new csrf=',csrf_token)
try{
data=await $.ajax(options)
}catch(e){
console.log('??? | error =',e)
throw e
}
}
}
return Object.keys(data).filter(
x=>x.startsWith('verdict#')&&data[x]!='OK'
).length==0
}
function pretestCountFetched(contestId){
const key='pretest_count_'+contestId
return GM_getValue(key)!==undefined
}
async function getPretestCount(contestId){
if(searchParams.has('mock_pretest_count'))
return new Proxy({}, { get: _=>[10, 20] })
const key='pretest_count_'+contestId
{
const stored_result=GM_getValue(key)
if(stored_result!==undefined)
return JSON.parse(stored_result)
}
console.log('aaa')
const data=await (async function(url){
// cache the GET requests for development purposes
let data
//data=GM_getValue('stored_api_get_'+url)
//if(data!==undefined)
// return JSON.parse(data)
data=await $.get(url)
// compress data
data.result=data.result.filter(x=>x.author.participantType=="CONTESTANT")
console.log('length=',data.result.length)
// NOT WORK - always exceed the quota
//GM_setValue('stored_api_get_'+url, JSON.stringify(data))
return data
})('//codeforces.com/api/contest.status?contestId='+contestId+'&from=1&count=100000000')
console.log('bbb')
let result={} // {problemIndex /* A/B/C/... */: [minPretestCount, maxPretestCount]}
for(const problemIndex of new Set(data.result.map(x=>x.problem.index))){
let problemResult=data.result.filter(x=>
x.problem.index==problemIndex&&
x.author.participantType=="CONTESTANT"
)
let minPretestCount,maxPretestCount
s1=problemResult.filter(x=>
pretest_passed_verdicts[x.verdict]&&x.passedTestCount!=0
// it's possible for SKIPPED submissions to have 0 tests passed when
// the user submits the second solution before the first one is judged
)
s1.sort((a,b)=>b.passedTestCount-a.passedTestCount)
if(s1.length!=0&&(await isValid(s1[0].id))){
minPretestCount=maxPretestCount=s1[0].passedTestCount
}else{
minPretestCount=1+Math.max(...
problemResult.filter(
// x=>x.testset=="PRETESTS"&&wrong_verdicts[x.verdict]
// cannot be "skipped" -> must fail on pretest
x=>x.testset=="PRETESTS"
).map(getPassedTestCount)
)
maxPretestCount=Math.min(...
problemResult.filter(
x=>x.testset=="TESTS"
).map(getPassedTestCount)
)
}
result[problemIndex]=[minPretestCount,maxPretestCount]
}
GM_setValue(key,JSON.stringify(result))
console.log(result)
if(logged_out){
document.body.innerHTML='You are logged out. Please refresh the page.'
location.reload()
}
return result
}
/*
function getContestId(){
return location.pathname.match('^/contest/(\\d+)')[1]
}
const contestId=getContestId()
*/
let searchParams=new URL(location).searchParams
// always_show, reset_button, mock_pretest_count, force_get
let cache={} // problemId -> result
let cacheSubmissions={} // submissionId -> item
let participantId // assume participantId is fixed
/*
function get_csrf_token(){ // use Codeforces.getCsrfToken()
return csrf_token
}
*/
if(location.href.match('://codeforces.com/contestRegistration/\\d*/virtual/true')){
const contestId=location.href.match('://codeforces.com/contestRegistration/(\\d*)/virtual/true')[1]
if(pretestCountFetched(contestId))
return
window.addEventListener('load',function(){
if(!confirm('Do you want to prefetch the pretest count of this contest?')){
alert("Note: the pretest will still be fetched inside the contest, and that may log you out. "+
"If you don't want that to happen, you should disable the script.")
return
}
const registerButton=document.querySelector('[value="Register for virtual participation"]')
if(registerButton===null){
$.jGrowl('Something unexpected happened. Please wait until "Done" is displayed before registering.')
}else{
registerButton.disabled=true
registerButton.value="Fetching pretest data..."
}
getPretestCount(contestId).then(function(){
$.jGrowl('Done! You can register now.')
location.reload()
})
})
}else if(searchParams.has('force_get')&&location.href.match('://codeforces.com/contest/\\d*/my')){
console.log('force_get')
window.addEventListener('load',function(){
const contestId=location.href.match('://codeforces.com/contest/(\\d*)/my')[1]
getPretestCount(contestId).then(function(){
let url=new URL(location)
url.searchParams.delete('force_get')
document.body.innerHTML=`Done. Redirecting to <a href="${url}">${url}</a>...`
location.href=url
})
})
}else if(searchParams.has('always_show')||location.href.match('://codeforces.com/contest/\\d*/my')){
console.log('start')
function restoreAll(){
observer.disconnect()
document.querySelectorAll('span').forEach(function(t){
if(t.__oldTextContent!==undefined){
t.textContent=t.__oldTextContent
t.className=t.__oldClassName
}
})
}
let button
function clickResetButton(){
restoreAll()
if(searchParams.has('reset_button')){
document.body.removeChild(button)
button=undefined
}
}
function createResetButton(){
if(button===undefined){
if(searchParams.has('reset_button')){
button=document.createElement('button')
button.innerHTML='Reset'
button.onclick=clickResetButton
document.body.appendChild(button)
}
}
}
let pendingNodes=[]
let getPretestCountRunning=false
let pretestCount={}
function processPendingNodes(){
let oldPendingNodes=pendingNodes
pendingNodes=[]
oldPendingNodes.forEach(processSpan)
}
const loadingText='Loading...'
function processSpan(t){
if(t.textContent==='Running') // before any test
return
console.log('processSpan',t.textContent)
let modified=t.textContent===loadingText||t.textContent==='Pretest passed'||t.textContent.includes(' pretest ')
if(!modified){
t.__oldTextContent=t.textContent
t.__oldClassName=t.className
}
let contestId,problemIndex
{
let tableRow=t
console.log('tableRow=',tableRow)
while(tableRow.tagName!='TR'){
tableRow=tableRow.parentNode
console.log('tableRow=',tableRow)
if(tableRow===null){
console.log('??? not added to document?')
return
}
}
const problemUrl=tableRow.children[3].children[0].href
const match=problemUrl.match('/contest/(\\d*)/problem/(.*)$$$')||problemUrl.match('/problemset/problem/(\\d*)/(.*)$$$')
// the second format is only used in problemset status page (when always_show is on)
contestId=match[1]
problemIndex=match[2]
}
if(pretestCount[contestId]===undefined||pretestCount[contestId]==='running'){
t.textContent=loadingText
t.className=''
pendingNodes.push(t)
if(pretestCount[contestId]!=='running'){
getPretestCount(contestId).then(function(result){
pretestCount[contestId]=result
processPendingNodes() // for pages different from contest/my this may cause the span to be push back to pendingNodes list
})
pretestCount[contestId]='running'
}
return
}
if(['Accepted','Happy New Year!'].includes(t.__oldTextContent)){
createResetButton()
t.textContent='Pretest passed'
t.className=t.__oldClassName
return
}
t.classList.replace('verdict-accepted','verdict-rejected')
if(!(
t.__oldClassName.match(/\bverdict-rejected\b/)||
t.__oldClassName.match(/\bverdict-waiting\b/)
)) throw new Error
try{
let wrongTestIndex=t.__oldTextContent.match(/ on test (\d+)$/)[1]
if(wrongTestIndex<=pretestCount[contestId][problemIndex][0]){
t.textContent=t.__oldTextContent.replace('on test','on pretest')
t.className=t.__oldClassName // rejected || waiting
}else if(wrongTestIndex<=pretestCount[contestId][problemIndex][1]){
t.textContent='???'
t.className=''
}else{
t.textContent='Pretest passed'
t.className='verdict-accepted'
}
}catch(e){
console.log(t.__oldTextContent,e)
}
//let problemId=tableRow.children[3].getAttribute('data-problemId') // int-parseable string
//let submissionId=parseInt(tableRow.children[0].textContent)
//if(participantId===undefined)
// participantId=parseInt(tableRow.children[2].getAttribute('data-participantId'))
}
let observer=new MutationObserver(function(mutations, observer){
for (let r of mutations){
for (let t of r.addedNodes){ // t must be in local scope
if(t.tagName==='SPAN'){
// t.classList.contains('contest-state-phase') // 'Contest is running' | 'Finished'
if(t.classList.contains('contest-state-regular')&&!t.classList.contains('countdown')){
console.log('contest-state = ',t,t.textContent)
if(
t.querySelector('.toggle-favourite')===null&&
t.textContent!=='Virtual Participation' // | 'Practice' | '???'
&&!searchParams.has('always_show')
){
console.log('bad state')
clickResetButton()
observer.disconnect()
return
}
}else if(t.classList.contains('verdict-accepted')||t.classList.contains('verdict-rejected')||t.classList.contains('verdict-waiting')){
processSpan(t)
}
}else if(t.tagName==='DIV'){
// jGrowl
if(t.classList.contains('jGrowl-notification')){
let z=t.getElementsByClassName('message')
if(z.length!==0&&
z[0].textContent.match(/^Accepted$| on test \d+$/)
)
z[0].textContent='???'
}
}
}
}
})
observer.observe(document,{
childList:true,
subtree:true,
attributes:true
});
}
})()
// TODO incomplete (rewrite standings table)
// vim: set ts=4 sw=4 fdm=indent: