js/90-tracker.js

   1 const TICK  = '<span class="tick tracker-mark">✔</span>';
   2 const XMARK = '<span class="x tracker-mark">✘</span>';
   3
   4 function clean_tracker(){
   5         $('.tracker-mark').each(e => e.parentNode.removeChild(e));
   6         $('.tracker-info').each(e => {
   7                 e.classList.remove('tracker-info');
   8                 e.classList.remove('info');
   9         });
  10 }
  11
  12 let tracker;
  13
  14 function update_tracker(){
  15         if(!localStorage.getItem('tracker_data'))
  16                 return;
  17         const data = JSON.parse(localStorage.getItem('tracker_data'));
  18         const user = localStorage.getItem('tracker_username');
  19         const contests = {}, solved = {}, attempted = {};
  20         let solvednr = 0, attemptednr = 0;
  21         data.problems.forEach(e => {
  22                 if(e.solved) {
  23                         solved[e.problem] = 1;
  24                         solvednr++;
  25                 } else {
  26                         attempted[e.problem] = 1;
  27                         attemptednr++;
  28                 }
  29         });
  30
  31         data.contests.forEach(e => contests[e.contest] = 1);
  32
  33         clean_tracker();
  34         q('#tracker_userlink').innerHTML = data.name;
  35         q('#tracker_solved').innerHTML = solvednr;
  36         q('#tracker_attempted').innerHTML = attemptednr;
  37         q('#tracker_contests').innerHTML = data.contests.length;
  38         q('#tracker_log').setAttribute('href', '/log/?owner=' + user);
  39
  40         if(location.pathname == '/pb/')
  41                 $('table .name a').each(el => {
  42                         const id = el.getAttribute('href').split('?', 2)[0];
  43                         if(solved[id])
  44                                 el.insertAdjacentHTML('beforebegin', TICK);
  45                         else if(attempted[id])
  46                                 el.insertAdjacentHTML('beforebegin', XMARK);
  47                 });
  48
  49         if(location.pathname == '/ct/')
  50                 $('table .name a').each(el => {
  51                         const id = el.getAttribute('href').substr(4);
  52                         if(contests[id])
  53                                 el.insertAdjacentHTML('beforebegin', TICK);
  54                 });
  55
  56         if(location.pathname == '/log/')
  57                 $('table tbody tr').each(el => {
  58                         const owner = el.querySelector('.owner a');
  59                         if(!owner || owner.getAttribute('href') != '/us/' + user)
  60                                 return;
  61                         const state = el.getElementsByClassName('r0').length ? TICK : XMARK;
  62                         el.getElementsByClassName('id')[0].innerHTML += state;
  63                 });
  64
  65         if(location.pathname.match(/^\/st\//) || location.pathname == '/us/')
  66                 $('table tbody tr').each(el => {
  67                         if(el.querySelector('.user a').getAttribute('href') == '/us/' + user){
  68                                 el.classList.add('info');
  69                                 el.classList.add('tracker-info');
  70                         }
  71                 });
  72 }
  73
  74 function start_tracking(user){
  75         localStorage.setItem('tracker_username', user);
  76         q('#tracker_userlink').setAttribute('href', '/us/' + user);
  77         q('#tracker_userlink').innerHTML = user;
  78         tracker.classList.remove('hidden');
  79         update_tracker();
  80         const lastfetch = localStorage.getItem('tracker_lastfetch');
  81         if(Date.now() - lastfetch > 60 * 10 * 1000)
  82                 refresh_tracker();
  83 }
  84
  85 function refresh_tracker(){
  86         const user = localStorage.getItem('tracker_username');
  87         const xhr = new XMLHttpRequest();
  88         xhr.open('GET', '/us/' + user + '?format=json');
  89         xhr.onload = () => {
  90                 localStorage.setItem('tracker_data', xhr.responseText);
  91                 localStorage.setItem('tracker_lastfetch', Date.now());
  92                 update_tracker();
  93         };
  94         xhr.send();
  95 }
  96
  97 function stop_tracking(){
  98         clean_tracker();
  99         localStorage.removeItem('tracker_username');
 100         localStorage.removeItem('tracker_data');
 101         localStorage.removeItem('tracker_lastfetch');
 102         tracker.classList.add('hidden');
 103 }
 104
 105 $(function(){
 106         tracker = m('<div id="tracker" class="hidden">Tracking <a id="tracker_userlink"></a>.<br><a id="tracker_stop" role="button">Stop tracking</a><br><a id="tracker_log">Job log</a><dl class="dl-horizontal"><dt>Solved</dt>    <dd id="tracker_solved">?</dd><dt>Attempted</dt> <dd id="tracker_attempted">?</dd><dt>Contests</dt>  <dd id="tracker_contests">?</dd></dl></div>');
 107         const sidebar = q('#sidebar');
 108         sidebar.insertBefore(tracker, sidebar.firstChild);
 109         $('#tracker_stop').on('click', stop_tracking);
 110         $('#track_user').on('click', function() { stop_tracking(); start_tracking(this.dataset.user) });
 111         $('#submitform').on('submit', () => localStorage.removeItem('tracker_lastfetch'));
 112
 113         if(localStorage.getItem('tracker_username'))
 114                 start_tracking(localStorage.getItem('tracker_username'));
 115 });