$(document).ready(function() {

  // ------------------------------
  // Settings
  // ------------------------------
  var apiUrl      = 'https://api.coinmarketcap.com/v1/ticker/?limit=0';
  var dataJson    = 'manifest.json';
  var formats     = ['svg', '128', '32', '32@2x'];
  var variants    = ['color', 'black', 'icon', 'white'];
  var iconDefault = 'black';
  var iconHover   = 'color';


  // ------------------------------
  // Init search
  // ------------------------------
  $('form .search').on('input', function() {
    search($(this));
  });

  $('form').submit(function( event ) {
    event.preventDefault();
    search($('form .search'));
  });


  // ------------------------------
  // Get icons
  // ------------------------------

  // Get icons from CoinMarketCap
  $.getJSON(apiUrl, function(coins){

    // Get icons in manifest
    $.getJSON(dataJson, function(data) {

      var icons = '';
      var count = 0;

      data.icons.forEach(function(icon) {

        // Get symbol
        var coin = coins.find(function(coin){
          return coin.symbol.toLowerCase() === icon;
        })

        // Get name
        var name     = coin ? coin.name : icon;
        var nameAttr = name.split(' ').join('-').toLowerCase();


        // Avoid duplicates
        if (icons.indexOf('data-icon="' + icon + '"') === -1) {

          // Construct icon
          icons += '<div class="col-6 col-lg-4 col-xl-3 text-left icon">';
          icons +=   '<a href="#' + icon + '" class="bg-light d-block pt-4 pr-3 pb-4 pl-3" data-toggle="modal" data-target="#infoIcon" data-icon="' + icon + '" data-name="' + nameAttr + '">';
          icons +=     '<div class="row align-items-center">';
          icons +=       '<div class="col container-img">';
          icons +=         '<img class="mr-2" src="svg/' + iconDefault + '/' + icon + '.svg" alt="' + icon + '" onerror="error(this);">';
          icons +=       '</div>';
          icons +=       '<div class="col name text-dark">';
          icons +=         name + '<span class="symbol text-muted text-uppercase small">' + icon + '</span></div>';
          icons +=       '</div>';
          icons +=     '</div>';
          icons +=   '</a>';
          icons += '</div>';
          count++;

        }
      });

      // Display
      $('.row.icons').html(icons);

      // Hover
      $('.icon').hover(function() {
        changeFolder($(this), iconDefault, iconHover);
      });

      // Mouseleave
      $('.icon').mouseleave(function() {
        changeFolder($(this), iconHover, iconDefault );
      });

      // Count icons
      $('.count-cryptos').text(count);

    });
  });


  // ------------------------------
  // Functions
  // ------------------------------

  // Search and Replace in Image src
  // ------------------------------
  function changeFolder(target, search, replace) {

    var target   = $(target).find('img');
    var srcInit  = $(target).attr('src');
    var srcAfter = srcInit.replace(search, replace);
    $(target).attr('src', srcAfter);

  }

  // Display icon info in Modal
  // ------------------------------
  $('#infoIcon').on('show.bs.modal', function (event) {

    // Modal settings
    var button = $(event.relatedTarget);
    var modal  = $(this);
    var icon   = button.data('icon');

    // Table settings
    var infos = '';
    var i = 0;
    var j = 0;

    // Construct table
    infos += '<table class="table info-icon mb-0">';

    // Construct titles
    infos +=   '<thead>';
    infos +=     '<tr>';
    infos +=       '<th class="text-center text-uppercase align-middle"><h5 class="mb-0">' + icon + '</h5></th>';
    while (variants[j]) {

      var formatCss = formats[i].replace('@', '-');
      infos +=       '<th class="variant-' + variants[j] + ' text-center font-weight-light text-muted align-middle">' + variants[j] + '</th>';
      j++;

    }

    j = 0;
    infos +=     '</tr>';
    infos +=   '</thead>';
    infos +=   '<tbody>';

    // Construct Row
    while (formats[i]) {

      var formatCss = formats[i].replace('@', '-');
      infos +=     '<tr>';

      // Construct titles of row
      infos +=       '<th class="format-' + formatCss + ' text-center font-weight-light text-muted align-middle" scope="row">' + formats[i] + '</th>';

      // File extension
      if (formats[i] == 'svg') {
        var extension = '.svg';
      }
      else if (formats[i] == '32@2x') {
        var extension = '@2x.png';
      }
      else {
        var extension = '.png';
      }

      // Construct icons cells
      while (variants[j]) {

        infos +=       '<td class="format-' + formatCss + ' variant-' + variants[j] + ' text-center">';
        infos +=         '<img src="' + formats[i] + '/' + variants[j] + '/' + icon + extension + '" alt="' + icon + '">';
        infos +=       '</td>';
        j++;

      }

      j = 0;
      i++;
      infos +=     '</tr>';

    }

    // Close table
    infos +=   '</tbody>';
    infos += '</table>';

    // Display
    modal.find('.modal-title').text(icon);
    modal.find('.modal-body').html(infos);

  });

  // Search
  // ------------------------------
  function search(target) {

    if ($(target).val().length > 0) {

      // Filter icons
      $('.icon').css('display', 'none');
      $('a[data-icon*="' + $(target).val().toLowerCase() + '"]').parent().css('display', 'block');
      $('a[data-name*="' + $(target).val().toLowerCase() + '"]').parent().css('display', 'block');

      // Close
      $('<div class="close-search"></div>').insertAfter(target);
      $('.close-search').click(function() {
        closeSearch(target);
      });

    }
    else {
      closeSearch(target);
    }

  }

  // Close search
  // ------------------------------
  function closeSearch(target) {
    $('.close-search').remove();
    $('.icon').css('display', 'block');
    $(target).val('');
  }

});


// Hide icons on error
// ------------------------------
function error(img) {
  $(img).parentsUntil('.icon').parent().remove();
}