'use strict';

/** Define UI specific stuff.
 */
var UI = (function () {
  /** Introduce FastClick for faster clicking on mobile.
   */
  $(function() {
    FastClick.attach(document.body);
  });

  // $('.prevent-select').on('mousedown', function(e) {
  //   e.preventDefault();
  // });


  /** Show a bootstrap modal with dynamic content e.g. background info **/
  var showModal = function(title, text, level) {
    var $modal = $('#infoBox');
    $modal.find('#infoBoxLabel').html(title);
    $modal.find('.modal-body').html(text);
    $modal.modal({show: true});
  };

  /** Display only the elements with data-min-level above a certain
   * threshold.
   */
  var showLevels = function(level) {
    $('#infoBox').find('[data-min-level]').each(function() {
      if (level >= $(this).data('min-level')) {
        $(this).show();
      } else {
        $(this).hide();
      }
    });
  };

  var showUpdateValue = function(ident, num) {
    if (num != 0) {
      var formatted = Helpers.formatNumberPostfix(num);
      var insert;
      if (num > 0) {
        insert = $("<div></div>")
                  .attr("class", "update-plus")
                  .html("+" + formatted);
      } else {
        insert = $("<div></div>")
                  .attr("class", "update-minus")
                  .html(formatted);
      }
      showUpdate(ident, insert);
    }
  }

  var showUpdate = function(ident, insert) {
    var elem = $(ident);
    elem.append(insert);
    insert.animate({
      "bottom":"+=30px",
      "opacity": 0
    }, { duration: 500, complete: function() {
      $(this).remove();
    }});
  }

  var showAchievement = function(obj) {
    var alert = '<div class="alert alert-success alert-dismissible" role="alert">';
    alert += '<button type="button" class="close" data-dismiss="alert"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>';
    alert += '<span class="fa ' + obj.icon + ' alert-glyph"></span> <span class="alert-text">' + obj.description + '</span>';
    alert += '</div>';

    alert = $(alert);

    $('#achievements-container').prepend(alert);
    var remove = function(a)
    {
      return function()
      {
        a.slideUp(300, function() { a.remove(); });
      };
    };

    window.setTimeout(remove(alert), 2000);
  }

  // display cookie warning
  if (typeof $.cookie('cookielaw') === 'undefined') {
    var alert = '<div id="cookielaw" class="alert alert-info" role="alert">';
    alert += '<button type="button" class="btn btn-primary">OK</button>';
    alert += '<i class="fa fa-info-circle alert-glyph"></i> <span class="alert-text">Particle Clicker uses local storage to store your current progress.</span>';
    alert += '</div>';
    alert = $(alert);
    alert.find('button').click(function ()
    {
      $.cookie('cookielaw', 'informed', { expires: 365 });
      $('#cookielaw').slideUp(300, function() { $('#cookielaw').remove(); });
    })

    $('#messages-container').append(alert);
  }

  // display new user alert
  // if (typeof $.cookie('cern60') === 'undefined') {
  //   var alert = '<div id="cern60" class="alert alert-info" role="alert">';
  //   alert += '<button type="button" class="btn btn-primary">Close</button>';
  //   alert += '<i class="fa fa-area-chart alert-glyph"></i> <span class="alert-text"><a class="alert-link" href="http://home.web.cern.ch/about/updates/2014/12/take-part-cern-60-public-computing-challenge" target="_blank">Join the CERN 60 computing challenge!</a></span>';
  //   alert += '</div>';
  //   alert = $(alert);
  //   alert.find('button').click(function ()
  //   {
  //     $.cookie('cern60', 'closed', { expires: 365 });
  //     $('#cern60').slideUp(300, function() { $('#cern60').remove(); });
  //   })
  //
  //   $('#messages-container').append(alert);
  // }

  return {
    showAchievement: showAchievement,
    showModal: showModal,
    showLevels: showLevels,
    showUpdateValue: showUpdateValue
  }
})();


// I don't know what this is for, so I leave it here for the moment...
(function() {
    var hidden = "hidden";

    // Standards:
    if (hidden in document)
        document.addEventListener("visibilitychange", onchange);
    else if ((hidden = "mozHidden") in document)
        document.addEventListener("mozvisibilitychange", onchange);
    else if ((hidden = "webkitHidden") in document)
        document.addEventListener("webkitvisibilitychange", onchange);
    else if ((hidden = "msHidden") in document)
        document.addEventListener("msvisibilitychange", onchange);
    // IE 9 and lower:
    else if ('onfocusin' in document)
        document.onfocusin = document.onfocusout = onchange;
    // All others:
    else
        window.onpageshow = window.onpagehide
            = window.onfocus = window.onblur = onchange;

    function onchange (evt) {
        var v = 'visible', h = 'hidden',
            evtMap = {
                focus:v, focusin:v, pageshow:v, blur:h, focusout:h, pagehide:h
            };

        evt = evt || window.event;
        if (evt.type in evtMap)
            detector.visible = evtMap[evt.type] == 'visible';
        else
            detector.visible = !this[hidden];
    }
})();