// just to ensure that the correct page is loaded iframe and http is checked again
/*
if(window.top!==window.self||window.top.location!=window.self.location||window.location.hostname !='youcount.github.io' || window.top.location.hostname != 'youcount.github.io')
window.top.location = window.self.location;
if(window.location.protocol != 'https:')
window.location.href = 'https:' + window.location.href.substring(window.location.protocol.length);
*/
// this is to hide email from spam bots
// MISC FUNCTIONS
// below, the ids are assigned their onclicks.
function idClickListener(ele, func) {
  document.getElementById(ele).addEventListener('click', func);
}

function queryClickListener(ele, func) {
  var elems = document.querySelectorAll(ele);
  elems.forEach(function(e) {
    e.addEventListener('click', func);
  });
}
function fx(str) {
  var ele = document.getElementById(str);
  var ini = 0;
  var op = 1;
  var parts = 1;
  fx.transition = function(val, fin, sign, func, t) {
    for(var i = 0; i < parts; i++) {
      setTimeout(function() {
        val += Number((fin - ini) / parts);
        func(val);
      }, 50*(i+1));
    }
  };
  fx.fadeIn = function(t){
    if(!t) t = 400;
    parts = t / 50;
    if(window.getComputedStyle(ele).getPropertyValue("display")=="none") {
      if(ele.dataset.fxDisplay)ele.style.display = ele.dataset.fxDisplay;
      else ele.style.display = "block";
      op = ele.dataset.fxOpacity || Number(ele.style.opacity) || 1;
      ele.style.opacity = 0;
      fx.transition(0, op, 1, function(v){ele.style.opacity = v; }, t);
      setTimeout(function(){
        ele.style.opacity = 1;
      }, t);
    }
  };
  fx.fadeOut = function(t){
    if(!t) t = 400;
    parts = t / 50;
    if (window.getComputedStyle(ele).getPropertyValue('display') != 'none'){
      ele.dataset.fxDisplay = window.getComputedStyle(ele).getPropertyValue('display');
      if (ele.style.opacity)op = Number(ele.style.opacity); else op = 1;
      ele.dataset.fxOpacity = op;
      ini = op;
      fx.transition(op, 0, -1, function(v){ele.style.opacity = v;}, t);
      setTimeout(function(){
        ele.style.display = 'none';
        ele.style.opacity = ele.dataset.fxOpacity;
      }, t);
    }
  };
  return fx;
}
var emailParts = ['manas.khurana20', 'gmail', 'com', '&#46;', '&#64;'];
document.getElementById('email').innerHTML = emailParts[0] + emailParts[4] + emailParts[1] + emailParts[3] + emailParts[2];
document.getElementById('email').href = 'mailto:' + document.getElementById('email').innerHTML;

var clickList = [
  ['fb', function() {
    window.open('https://www.facebook.com/sharer/sharer.php?u=' + encodeURIComponent(document.querySelector('#pageUrl input').getAttribute('value')), '_blank');
  }],
  ['tw', function() {
    window.open('https://twitter.com/share?text=' + document.getElementById('username').value + ' now has  ' + actualCount.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ',') + ' subscribers!&url= ' + encodeURIComponent(document.querySelector('#pageUrl input').getAttribute('value')) + '&hashtags=YouCount', '_blank');
  }],
  ['lnkdIn', function() {
    window.open('https://www.linkedin.com/shareArticle?mini=true&url=' + encodeURIComponent(document.querySelector('#pageUrl input').getAttribute('value')) + '&title=' + encodeURIComponent(channelname) + '\'s%20Live%20Subscriber%20Count&source=YouCount', '_blank');
  }],
  ['tb', function() {
    window.open('http://www.tumblr.com/share/link?url=' + encodeURIComponent(document.querySelector('#pageUrl input').getAttribute('value')), '_blank');
  }],
  ['rdit', function() {
    window.open('http://www.reddit.com/submit?url=' + encodeURIComponent(document.querySelector('#pageUrl input').getAttribute('value')) + '&title=' + encodeURIComponent(channelname) + 's%20Live%20Subscriber%20Count', '_blank');
  }],
  ['link', linkshare],
  ['bg2', function() {
    if (isTutorialOn) {
      tutorial(3);
    } else {
      fx('pageUrl').fadeOut(250);
      fx('bg2').fadeOut(500);
    }
  }]
];
clickList.forEach(function(e) {
  idClickListener(e[0], e[1]);
});
// below, the queries are assigned their onclicks(all elements except the ones with ids).
//
// only for single ids is a separate function created because getElementById is faster than
// querySelectorAll and there are a lot of single ids being assigned onclicks.
queryClickListener('#input button', getValue);
queryClickListener('.suggest', function(v) {
  var val = v.target.dataset.id;
  if (val) {
    getValue(val);
  }
});
['showextra','hideextra'].forEach(function(e) {
  idClickListener(e, extrabutton);
});

function tutorial(n) {
  if (!n) n = 0;
  isTutorialOn = 1;
  window.scrollTo(0, 0);
  var bottom = 0;
  switch (n) {
    case 0:
      document.getElementById('username').value = '';
      document.getElementById('input').style.zIndex = '1002';
      document.getElementById('tutorial').style.display = 'block';
      bottom = (document.getElementById('username').getBoundingClientRect()).bottom;
      document.getElementById('tutorial').style.top = bottom + 55;
      document.getElementById('bg2').style.display = 'block';
      break;
    case 1:
      document.getElementById('tutStep1').style.display = 'none';
      document.getElementById('tutStep2').style.display = 'block';
      bottom = (document.getElementById('username').getBoundingClientRect()).bottom;
      document.getElementById('tutorial').style.top = bottom + 55;
      break;
    case 2:
      document.getElementById('tutStep1').style.display = 'none';
      document.getElementById('tutStep2').style.display = 'block';
      document.getElementById('suggest').style.zIndex = '1002';
      bottom = (document.getElementById('suggest').getBoundingClientRect()).bottom;
      document.getElementById('tutorial').style.top = bottom + 55;
      document.getElementById('bg2').style.display = 'block';
      break;
    case 3:
      document.getElementById('tutorial').style.display = 'none';
      document.getElementById('bg2').style.display = 'none';
      document.getElementById('input').style.zIndex = 'auto';
      isTutorialOn = 0;
      break;
    default:
      break;
  }
}

if (isTutorialOn) tutorial();

// this function gives the share button its clicking function.
// if the button is clicked (ie shareswitch === 0),
// the sharing features are shown, meanwhile the shareswitch is set to 1.
// After transition is over, shareswitch === 2. running the func again will do the opposite
// When shareswitch === 1, it represents the transition, so the function will simply quit
// Hence neither body nor button when clicked during transition won't be able to do anything
var shareswitch = 0;
function shareFunc(isButton) {
  var t = 200; // time in milliconds
  if (isButton !== true && shareswitch < 2) {
    return;
  }
  var shareElems = document.querySelectorAll('.share');
  switch (shareswitch) {
    case 0:
      shareswitch = 1;
      shareElems.forEach(function(e, i) {
        setTimeout(function() {
          fx(e.id).fadeIn(t);
        }, 40 * (i - 1));
      });
      setTimeout(function() {
        shareswitch = 2;
      }, t + shareElems.length*40);
      break;
    case 1:break;
    case 2:
      shareswitch = 1;
      navState[0] = 0;
      shareElems.forEach(function(e, i) {
        fx(e.id).fadeOut(t);
      });
      setTimeout(function() {
        shareswitch = 0;
      }, t + shareElems.length*40);
      break;
    default:break;
  }
}
queryClickListener('body', shareFunc);
var navState = [0, 0];
function handleNavButtons(n) {
  if (navState[1]) return;
  if (navState[0]!=0) {
    navState[1] = 1;
    document.getElementById('bg1').style.height = '100%'
    document.getElementById('bg1').classList.add('ball');
    document.getElementById('mainPage').style.display = 'block';
    if(navState[0]==n) {
      setTimeout(function(){
        navState = [0, 0];
      },500);
    } else {
      setTimeout(function(){
        navState = [0, 0];
        handleNavButtons(n);
      },500);
    }
    switch (navState[0]) {
      case 2:
        document.getElementById('helpArt').style.display = 'none';
        break;
      case 3:
        document.getElementById('codeArt').style.display = 'none';
        break;
    }
  } else {
    switch (n) {
      case 1:
        if (location.hash)
        location.href = location.href.split(location.hash)[0];
        navState[0] = 1;
        break;
      case 2:
        document.getElementById('bg1').classList.remove('ball');
        setTimeout(function() {
          fx('helpArt').fadeIn(500);
          document.getElementById('bg1').style.height = 'auto';
          document.getElementById('mainPage').style.display = 'none';
        }, 500);
        setTimeout(function() {
          navState[1] = 0;
        }, 1000);
        navState = [2, 1];
        break;
      case 3:
        document.getElementById('bg1').classList.remove('ball');
        setTimeout(function() {
          fx('codeArt').fadeIn(500);
          document.getElementById('bg1').style.height = 'auto';
          document.getElementById('mainPage').style.display = 'none';
        }, 500);
        setTimeout(function() {
          navState[1] = 0;
        }, 1000);
        navState = [3, 1];
        break;
      case 4:
        shareFunc(true);
        navState[0] = 4;
        break;
      default: break;
    }
  }
}
// this thing gives the search box it's effects (material design thing + fading in search button)
// when it is clicked or focussed upon and effectively hides them as well.
document.getElementById('username').addEventListener('focusin', function() {
  if (isTutorialOn) {
    document.getElementById('username').value = '';
    tutorial(1);
  }
  document.getElementById('username').select();
});
document.getElementById('username').addEventListener('focusout', function() {
  setTimeout(function(){
    document.getElementById('suggest').style.display = 'none';
  }, 200);
});


document.getElementById('username').addEventListener('keyup', function() {
  var value = document.getElementById('username').value.trim();
  if (!internet) {
    document.getElementById('username').value = 'Refresh the page';
    return;
  }
  if (!value || value === 'Not Found!' || value === 'Loading...' || value === 'Refresh the page') {
    document.getElementById('suggest').style.display = 'none';
    if (isTutorialOn) {
      tutorial(1);
    }
    return;
  }
  document.getElementById('suggest').style.display = 'block';
  AJX('https://www.googleapis.com/youtube/v3/search?part=snippet&q=' + encodeURIComponent(value) + '&type=channel&maxResults=5&relevanceLanguage=en&key=' + getKey(),
    function(e) {
      try {
        if(!e.items) {
          throw new Error( "undef e.items in username keyup (script.js)");
        }
        if (e.pageInfo.totalResults < 1) {
          // if no result found, return
          return;
        }// else
        // show results in suggestions
        var suggests = document.querySelectorAll('.suggest');
        suggests.forEach(function(s, x) {
          s.style.display = 'block'
        });
        document.querySelectorAll('.suggest div').forEach(function(s, x) {
          try {
            s.dataset.id = e.items[x].snippet.channelId.trim();
            s.textContent = e.items[x].snippet.title;
          } catch (e) {
            suggests[x].style.display = 'none';
          }
        });
        document.querySelectorAll('.suggestImg').forEach(function(s, x) {
          try {
            s.dataset.id = e.items[x].snippet.channelId.trim();
            s.src = e.items[x].snippet.thumbnails.default.url;
          } catch (e) {
            suggests[x].style.display = 'none';
          }
        });
      } catch (e) {
        noInternet(e)
      }
    }, noInternet);
  if (isTutorialOn) {
    tutorial(2);
  }
});
// this allows inputting of value using enter.
function trigenter(e) {
  if (e.keyCode === 13) {
    getValue();
  }
}

// this shows/hides the sharable link of the page.
function linkshare() {
  fx('pageUrl').fadeIn(250);
  fx('bg2').fadeIn(500);
}
var views = [];
for (var l = 50; l > 0; l--)views.push(l);
function pushViews(url, i) {
  AJX(url, function(e) {
    views[i] = e.items[0].statistics.viewCount;
    if (i === ((vids * 2) - 1))upCharts();
  });
}
// this is used to show/hide the chart.
// if the chart is loading for the first time (ie firstload=0),
// first the script of chart is downloaded and then it is loaded.
var extraswitch = 0;
var myLineChart2;
var myLineChart3;
var myLineChart4;
var vids = 5;
function extrabutton() {
  if (firstload === 0) {
    if(!internet || notFound || isTutorialOn)return;
    document.getElementById('showextra').innerHTML = 'LOADING...';
    var reqType = (username.length >= 24 && username.substr(0, 2).toUpperCase() === 'UC') ? 'id' : 'forUsername';
    var url = 'https://www.googleapis.com/youtube/v3/channels?part=contentDetails&' + reqType + '=' + username + '&fields=items/contentDetails/relatedPlaylists/uploads&key=' + getKey();
    try {
      AJX(url, function(e) {
        if (!e.items[0].contentDetails.relatedPlaylists.uploads) {
          throw new Error( "1. undef e.items[0].contentDetails.relatedPlaylists.uploads in extrabutton(script.js)");
        }
        var url2 = 'https://www.googleapis.com/youtube/v3/playlistItems?part=snippet&playlistId=' + e.items[0].contentDetails.relatedPlaylists.uploads + '&maxResults=50&fields=items/snippet/resourceId/videoId&key=' + getKey();
        AJX(url2, function(e) {
          if (!e.items) {
            throw new Error( "2. undef e.items in extrabutton(script.js)");
          }
          for (var i = 0; e.items[i]; i ++) {
            var url3 = 'https://www.googleapis.com/youtube/v3/videos?part=statistics&id=' + e.items[i].snippet.resourceId.videoId + '&fields=items/statistics/viewCount&key=' + getKey();
            pushViews(url3, i);
          }
          getScript('https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.5.0/Chart.js', function() {
            isChart = 1;
            fx('showextra').fadeOut();
            fx('hideextra').fadeIn();
            extraswitch = 1;

            var data1 = []
            var labels1 = [];
            for (var i = 0; i < vids ; i ++) {
              data1[i] = views[i];
              labels1[i] = '';
            }
            var myLineChart2Data = {
              labels: labels1,
              datasets: [{
                label: 'Views of last' + vids + ' videos',
                fill: false,
                borderColor: 'rgba(255,50,50,0.5)',
                pointBorderColor: 'rgba(255,50,50,0.5)',
                pointBackgroundColor: 'rgba(255,50,50,1)',
                data: data1,
              }],
            };
            myLineChart2 = new Chart(document.getElementById('myChart2').getContext('2d'), {
              type: 'line',
              data: myLineChart2Data,
              gridLines: {
                display: false,
              },
              responsive: true,
              maintainAspectRatio: false,
            });
            var totviews = [(function() {
              var tot = 0;
              for (var i = 0; i < vids; i ++) {
                tot += Number(views[i]);
              }
              return tot;
            })(), (function() {
              var tot = 0;
              for (var i = vids; i < (vids * 2); i ++) {
                tot += Number(views[i]);
              }
              return tot;
            })()];
            var data2 = [Math.floor(totviews[0] / vids), Math.floor(totviews[1] / vids)];
            var labels2 = ['last ' + vids + ' videos', 'last to last ' + vids + ' videos'];
            var myLineChart3Data = {
              labels: labels2,
              datasets: [{
                label: 'Average Views',
                borderColor: ['rgba(0,0,255,1)', 'rgba(0,255,0,1)'],
                backgroundColor: ['rgba(50,50,255,0.2)', 'rgba(50,255,50,0.2)'],
                hoverBackgroundColor: ['rgba(0,0,255,1)', 'rgba(0,255,0,1)'],
                data: data2,
              }],
            };
            myLineChart3 = new Chart(document.getElementById('myChart3').getContext('2d'), {
              type: 'bar',
              data: myLineChart3Data,
              gridLines: {
                display: false,
              },
              responsive: true,
              maintainAspectRatio: false,
            });
            var data3 = [totviews[0], totviews[1]];
            var labels3 = ['last' + vids + ' videos (total views)', 'last to last ' + vids + ' videos (total views)'];
            var myLineChart4Data = {
              labels: labels3,
              datasets: [{
                label: 'Total Views',
                borderColor: ['rgba(0,0,255,1)', 'rgba(0,255,0,1)'],
                backgroundColor: ['rgba(50,50,255,0.2)', 'rgba(50,255,50,0.2)'],
                hoverBackgroundColor: ['rgba(0,0,255,1)', 'rgba(0,255,0,1)'],
                data: data3,
              }],
            };
            myLineChart4 = new Chart(document.getElementById('myChart4').getContext('2d'), {
              type: 'doughnut',
              data: myLineChart4Data,
              gridLines: {
                display: false,
              },
              responsive: true,
              maintainAspectRatio: false,
            });
            changeText(document.getElementById('pubDate'), channeldate);
            var url4 = 'https://www.googleapis.com/youtube/v3/channels?part=statistics&' + reqType + '=' + username + '&fields=items/statistics(videoCount,viewCount)&key=' + getKey();
            AJX(url4, function(b) {
              if (!b.items[0].statistics.videoCount || !b.items[0].statistics.viewCount) {
                throw new Error( "3. undef b.items[0].statistics.videoCount or b.items[0].statistics.viewCount in extrabutton(script.js)");
              }
              changeText(document.getElementById('totalVideos'), b.items[0].statistics.videoCount.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ','));
              changeText(document.getElementById('totalViews'), b.items[0].statistics.viewCount.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ','));
            });
          });
        });
      }, noInternet);
    } catch (e) {
      noInternet(e);
    }
    setTimeout(function() {
      document.getElementById('extraContent').style.display = 'block';
    }, 250);
    firstload = 1;
  } else {
    document.getElementById('showextra').innerHTML = 'SHOW STATS';
    if (extraswitch === 0) {
      isChart = 1;
      fx('showextra').fadeOut();
      fx('hideextra').fadeIn();
      setTimeout(function() {
        document.getElementById('extraContent').style.display = 'block';
      });
      extraswitch = 1;
    } else {
      myLineChart1.destroy();
      fx('showextra').fadeIn();
      fx('hideextra').fadeOut(100);
      setTimeout(function() {
        document.getElementById('extraContent').style.display = 'none';
      });
      extraswitch = 0;
      isChart = 0;
    }
  }
}

function upCharts() {
  if (Number(document.getElementById('vids').value)>25)return;
  vids = Number(document.getElementById('vids').value);
  var sum1=0,sum2=0;
  for(var i=0;i<vids;i++){
    myLineChart2.data.labels[i]='';
    myLineChart2.data.datasets[0].data[i]=views[i];
    sum1+=Number(views[i]);
  }
  for(i=vids;i<(vids*2);i++)sum2+=Number(views[i]);
  myLineChart2.data.labels.splice(vids);
  myLineChart2.data.datasets[0].data.splice(vids);
  myLineChart2.data.datasets[0].label = 'Views of last ' + vids + ' videos';

  myLineChart3.data.labels= ['last '+vids+' videos','last to last '+vids+' videos'];
  myLineChart3.data.datasets[0].data[0] = Math.floor(sum1/vids);
  myLineChart3.data.datasets[0].data[1] = Math.floor(sum2/vids);

  myLineChart4.data.labels= ['last '+vids+' videos (total views)','last to last '+vids+' videos (total views)'];
  myLineChart4.data.datasets[0].data[0] = sum1;
  myLineChart4.data.datasets[0].data[1] = sum2;

  myLineChart2.update();
  myLineChart3.update();
  myLineChart4.update();
}

//images are loaded after the whole page is loaded (since it has a big download size and sends multiple requests).
if(internet){
    var images = document.getElementsByTagName('img');
    for(var pl=0;pl<images.length;pl++){
      if(!images[pl].src && images[pl].id && images[pl].id!='dp'){
        images[pl].src = '/images/' + images[pl].id + '.png';
      }
    }
}