/**

 * Forum background image selector.

 *

 * @author Luiz Felipe Gonçalves <https://luizfelipe.dev>

 * @see https://ajuda.forumeiros.com/t113492-

 * @see https://github.com/lffg/code-in-js/blob/master/fdf/t113492.js

 * @license MIT

 */



(function($, STORAGE_KEY, styles) {

  'use strict';



  var imageList = [

    'https://i.servimg.com/u/f15/20/01/43/25/yq2dqw10.png', // La primera es la imagen por defecto

    'https://i.servimg.com/u/f15/20/01/43/25/uelbrg10.jpg',

    'https://i.servimg.com/u/f15/20/01/43/25/aabt5510.jpg',

    'https://i.servimg.com/u/f15/20/01/43/25/qgaqh410.jpg',

    'https://i.servimg.com/u/f15/20/01/43/25/hgqzqj10.png'

  ];



  /**

   * Generates a new jQuery object to select the images.

   *

   * @return {object}

   */

  function generateElement() {

    var choicesList = $.map(imageList, function(image) {

      return $('<div class="lffg-bgimage__choice">')

        .attr('data-image', image)

        .html($('<img />', { src: image }).prop('outerHTML'))

        .prop('outerHTML');

    });



    return $(

      [

        '<div class="lffg-bgimage lffg-bgimage--hidden">',

        '  <a class="lffg-bgimage__toggler" title="Cambiar imagen de fondo">',

        '    <span><i class="fa fa-paint-brush"></i></span>',

        '  </a>',

        '  <div class="lffg-bgimage__inner">',

        '    <header class="lffg-bgimage__header">',

        '      <span>Seleccionar imagen de fondo</span>',

        '    </header>',

        '    <div class="lffg-bgimage__picker-wrapper">',

        '      <div class="lffg-bgimage__picker">',

        '        ' + choicesList.join('\n'),

        '      </div>',

        '    </div>',

        '  </div>',

        '</div>'

      ].join('\n')

    );

  }



  function handleToggle() {

    var $target = $(this);



    $target.parents('.lffg-bgimage').toggleClass('lffg-bgimage--hidden');

  }



  function setBg() {

    if (!'localStorage' in window) {

      return false;

    }



    var image = function() {

      return localStorage.getItem(STORAGE_KEY);

    };



    if (!image()) {

      // Set the first one of the list as the default.

      localStorage.setItem(STORAGE_KEY, imageList[0]);

    }



    $('body').css('background-image', 'url(' + image() + ')');

    return true;

  }



  function handleChange(event) {

    var $target = $(this);

    var image = $target.attr('data-image');



    localStorage.setItem(STORAGE_KEY, image);

    setBg();

  }



  $(function() {

    // Execute once and stop the script if the API is not supported.

    if (!setBg()) {

      return console.warn(

        '[LFFG Script] Your browser does not support the localStorage API.'

      );

    }



    generateElement()

      .on('click', function(event) {

        event.stopPropagation();

      })

      .on('click', '.lffg-bgimage__toggler', handleToggle)

      .on('click', '.lffg-bgimage__choice', handleChange)

      .appendTo('body');



    $(window).on('click', function() {

      if (!$('.lffg-bgimage').is('.lffg-bgimage--hidden')) {

        $('.lffg-bgimage').addClass('lffg-bgimage--hidden');

      }

    });



    $('<style>', { text: styles.join('\n') }).appendTo('head');

  });

})(jQuery, 'lffg-current-bgimage', [

  '.lffg-bgimage {',

  '  display: block;',

  '  border: solid 1px #ddd;',

  '  border-left: 0;',

  '  position: fixed;',

  '  top: 10vh;',

  '  left: 0;',

  '  background-color: #fff;',

  '  box-shadow: 4px 4px rgba(0, 0, 0, 0.39);',

  '  z-index: 9999;',

  '  transition: all ease-in-out 300ms;',

  '}',

  '',

  '.lffg-bgimage.lffg-bgimage--hidden {',

  '  transform: translateX(calc(-100% - 25px));',

  '}',

  '',

  '.lffg-bgimage__toggler {',

  '  display: flex;',

  '  justify-content: center;',

  '  align-items: center;',

  '  width: 45px;',

  '  height: 45px;',

  '  position: absolute;',

  '  border: solid 1px #ddd;',

  '  left: calc(100% + 1px + 1.5rem);',

  '  background-color: #fff;',

  '  font-size: 23px;',

  '  color: #39c !important;',

  '  box-shadow: 4px 4px rgba(0, 0, 0, 0.39);',

  '  transition: all linear 95ms;',

  '  cursor: pointer;',

  '}',

  '',

  '.lffg-bgimage__toggler::before {',

  '  content: "";',

  '  width: 15px;',

  '  height: 15px;',

  '  border: solid 1px transparent;',

  '  border-top-color: #ddd;',

  '  border-left-color: #ddd;',

  '  background-color: #fff;',

  '  transform: rotate(-45deg);',

  '  position: absolute;',

  '  left: -8px;',

  '  z-index: 2;',

  '  transition: all linear 95ms;',

  '}',

  '',

  '.lffg-bgimage__toggler:hover,',

  '.lffg-bgimage__toggler:hover::before {',

  '  color: #fff !important;',

  '  background-color: #39c;',

  '}',

  '',

  '.lffg-bgimage__toggler span {',

  '  position: relative;',

  '  z-index: 2;',

  '}',

  '',

  '.lffg-bgimage__header {',

  '  padding: 1rem;',

  '  border-bottom: solid 1px #ddd;',

  '  background-color: #39c;',

  '  color: #fff;',

  '  font-family: "Trebuchet MS", sans-serif;',

  '  font-size: 1.15rem;',

  '  text-transform: uppercase;',

  '}',

  '',

  '.lffg-bgimage__picker-wrapper {',

  '  max-height: 300px;',

  '  overflow-y: scroll;',

  '}',

  '',

  '.lffg-bgimage__picker {',

  '  display: flex;',

  '  justify-content: center;',

  '  align-items: center;',

  '  flex-direction: column;',

  '}',

  '',

  '.lffg-bgimage__choice {',

  '  display: block;',

  '  width: 120px;',

  '  height: 120px;',

  '  margin-bottom: 1rem;',

  '  border: solid 1px #ddd;',

  '  border-radius: 500px;',

  '  overflow: hidden;',

  '  cursor: pointer;',

  '  transition: all linear 100ms;',

  '}',

  '',

  '.lffg-bgimage__choice:hover {',

  '  box-shadow: 0 0 0 5px #39c;',

  '}',

  '',

  '.lffg-bgimage__choice:first-child {',

  '  margin-top: 1rem;',

  '}',

  '',

  '.lffg-bgimage__choice img {',

  '  width: 140px;',

  '  height: 140px;',

  '}'

]);