freeCodeCamp/client/main.js

var main = window.main || {};

main.mapShareKey = 'map-shares';

main.ga = window.ga || function() {};

main = (function(main) {

  // should be set before gitter script loads
  ((window.gitter = {}).chat = {}).options = {
    disableDefaultChat: true
  };
  // wait for sidecar to load

  main.chat = {};
  main.chat.isOpen = false;
  main.chat.createHelpChat = function createHelpChat() {
    throw new Error('Sidecar chat has not initialized');
  };

  document.addEventListener('gitter-sidecar-ready', function(e) {
    main.chat.GitterChat = e.detail.Chat;

    main.chat.createHelpChat = function(room, helpChatBtnClass, roomTitle) {
      roomTitle = roomTitle || 'Waypoint Help';

      $('body').append(
        '<aside id="chat-embed-help" class="gitter-chat-embed is-collapsed" />'
      );

      main.chat.helpChat = new main.chat.GitterChat({
        room: room,
        activationElement: false,
        targetElement: $('#chat-embed-help')
      });

      $(helpChatBtnClass).on('click', function() {
        // is button already pressed?
        // no? open chat
        // yes? close chat
        var shouldChatBeOpen = !$(this).hasClass('active');
        main.chat.helpChat.toggleChat(shouldChatBeOpen);
        if (shouldChatBeOpen) {
          $(helpChatBtnClass).addClass('active');
        }
      });

      var helpTitleAdd = false;
      $('#chat-embed-help').on('gitter-chat-toggle', function(e) {
        var shouldButtonBePressed = !!e.originalEvent.detail.state;

        if (!helpTitleAdd) {
          helpTitleAdd = true;
          $('#chat-embed-help > .gitter-chat-embed-action-bar').prepend(
            '<div class="chat-embed-main-title">' +
              '<span>' +
                roomTitle +
              '</span>' +
            '</div>'
          );
        }

        if (shouldButtonBePressed) {
          return $(helpChatBtnClass).addClass('active');
        }
        return $(helpChatBtnClass).removeClass('active');
      });
    };

    $('body').append(
      '<aside id="chat-embed-main" class="gitter-chat-embed is-collapsed" />'
    );

    main.chat.mainChat = new main.chat.GitterChat({
      room: 'freecodecamp/freecodecamp',
      activationElement: false,
      targetElement: $('#chat-embed-main')
    });

    var mainChatTitleAdded = false;
    $('#chat-embed-main').on('gitter-chat-toggle', function() {
      if (mainChatTitleAdded) {
        return null;
      }
      mainChatTitleAdded = true;

      $('#chat-embed-main > .gitter-chat-embed-action-bar').prepend(
        '<div class="chat-embed-main-title">' +
          '<span>Free Code Camp\'s Main Chat</span>' +
        '</div>'
      );
    });


    $('#nav-chat-btn').on('click', function() {
      if (!main.chat.isOpen) {

        main.chat.mainChat.toggleChat(true);
      }
    });
  });

  return main;
}(main));

var lastCompleted = typeof lastCompleted !== 'undefined' ?
  lastCompleted :
  '';

main.getMapShares = function getMapShares() {
  var alreadyShared = JSON.parse(
    localStorage.getItem(main.mapShareKey) ||
    '[]'
  );

  if (!alreadyShared || !Array.isArray(alreadyShared)) {
    localStorage.setItem(main.mapShareKey, JSON.stringify([]));
    alreadyShared = [];
  }
  return alreadyShared;
};

main.setMapShare = function setMapShare(id) {
  var alreadyShared = main.getMapShares();
  var found = false;
  alreadyShared.forEach(function(_id) {
    if (_id === id) {
      found = true;
    }
  });
  if (!found) {
    alreadyShared.push(id);
  }
  localStorage.setItem(main.mapShareKey, JSON.stringify(alreadyShared));
  return alreadyShared;
};

$(document).ready(function() {

  var CSRF_HEADER = 'X-CSRF-Token';

  var setCSRFToken = function(securityToken) {
    jQuery.ajaxPrefilter(function(options, _, xhr) {
      if (!xhr.crossDomain) {
        xhr.setRequestHeader(CSRF_HEADER, securityToken);
      }
    });
  };

  setCSRFToken($('meta[name="csrf-token"]').attr('content'));

  $('img').error(function() {
    $(this)
      .unbind('error')
      .attr(
        'src',
        'https://s3.amazonaws.com/freecodecamp/camper-image-placeholder.png'
      );
  });

  function upvoteHandler(e) {
    e.preventDefault();
    var upvoteBtn = this;
    var id = upvoteBtn.id;
    var upVotes = $(upvoteBtn).data().upVotes;
    var username = typeof username !== 'undefined' ? username : '';
    var alreadyUpvoted = false;
    for (var i = 0; i < upVotes.length; i++) {
      if (upVotes[i].upVotedBy === username) {
        alreadyUpvoted = true;
        break;
      }
    }
    if (!alreadyUpvoted) {
      $.post('/stories/upvote', { id: id })
        .fail(function() {
          $(upvoteBtn).bind('click', upvoteHandler);
        })
        .done(function(data) {
          $(upvoteBtn)
            .text('Upvoted!')
            .addClass('disabled');

          $('#storyRank').text(data.rank + ' points');
        });
    }
  }

  $('#story-list').on('click', 'button.btn-upvote', upvoteHandler);

  var storySubmitButtonHandler = function storySubmitButtonHandler() {

    if (!$('#story-submission-form')[0].checkValidity()) {
      return null;
    }

    var link = $('#story-url').val();
    var headline = $('#story-title').val();
    var description = $('#description-box').val();
    var data = {
      data: {
        link: link,
        headline: headline,
        timePosted: Date.now(),
        description: description,
        storyMetaDescription: main.storyMetaDescription,
        rank: 1,
        image: main.storyImage
      }
    };

    $('#story-submit').unbind('click');
    $.post('/stories/', data)
      .fail(function() {
        $('#story-submit').bind('click', storySubmitButtonHandler);
      })
      .done(function(data) {
        window.location = '/stories/' + data.storyLink;
      });
  };

  $('#story-submit').on('click', storySubmitButtonHandler);


  // map sharing
  var alreadyShared = main.getMapShares();

  if (lastCompleted && alreadyShared.indexOf(lastCompleted) === -1) {
    $('div[id="' + lastCompleted + '"]')
      .parent()
      .parent()
      .removeClass('hidden');
  }

  // on map view
  $('.map-challenge-block-share').on('click', function(e) {
    e.preventDefault();
    var challengeBlockName = $(this).children().attr('id');
    var challengeBlockEscapedName = challengeBlockName.replace(/\s/, '%20');
    var username = typeof window.username !== 'undefined' ?
      window.username :
      '';

    var link = 'https://www.facebook.com/dialog/feed?' +
      'app_id=1644598365767721' +
      '&display=page&' +
      'caption=I%20just%20completed%20the%20' +
      challengeBlockEscapedName +
      '%20section%20on%20Free%20Code%20Camp%2E' +
      '&link=http%3A%2F%2Ffreecodecamp%2Ecom%2F' +
      username +
      '&redirect_uri=http%3A%2F%2Ffreecodecamp%2Ecom%2Fmap';

    main.setMapShare(challengeBlockName);
    window.ga('send', 'event', 'FB_LINK', 'SHARE', 'Facebook map share');
    window.location.href = link;
  });
});