/*
 * Solo - A small and beautiful blogging system written in Java.
 * Copyright (c) 2010-2018, b3log.org & hacpai.com
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
/**
 * @fileoverview util and every page should be used.
 *
 * @author <a href="http://vanessa.b3log.org">Liyuan Li</a>
 * @version 0.1.0.0, Feb 17, 2017
 */

/**
 * @description 皮肤脚本
 * @static
 */
var Skin = {
  _initCommon: function ($goTop) {
    $('body').on('click', '.content-reset img', function () {
      window.open(this.src)
    })

    var $banner = $('header .banner'),
      $navbar = $('header .navbar')

    $(window).scroll(function () {
      if ($(window).scrollTop() > 125) {
        $goTop.show()
      } else {
        $goTop.hide()
      }

      if ($(window).width() < 701) {
        return false
      }

      if ($(window).scrollTop() > $banner.height()) {
        $navbar.addClass('pin')
        $('.main-wrap').parent().css('margin-top', '86px')
      } else {
        $navbar.removeClass('pin')
        $('.main-wrap').parent().css('margin-top', '0')
      }
    })
  },
  init: function () {
    if (!('IntersectionObserver' in window)) {
      $('.item').addClass('item--active')
      return false
    }

    if (window.imageIntersectionObserver) {
      window.imageIntersectionObserver.disconnect()
      $('.item').each(function () {
        window.imageIntersectionObserver.observe(this)
      })
    } else {
      window.imageIntersectionObserver = new IntersectionObserver((entries) => {
        entries.forEach((entrie) => {
          if (typeof entrie.isIntersecting === 'undefined'
            ? entrie.intersectionRatio !== 0 : entrie.isIntersecting) {
            $(entrie.target).addClass('item--active')
          } else {
            if ($(entrie.target).closest('.side').length === 1) {
              return
            }
            $(entrie.target).removeClass('item--active')
          }
        })
      })
      $('.item').each(function () {
        window.imageIntersectionObserver.observe(this)
      })
    }

    this._initCommon($('.icon-up'))

    $('.navbar nav a').each(function () {
      if (this.href === location.href) {
        this.className = 'current'
      }
    })

    $('.responsive .list a').each(function () {
      if (this.href === location.href) {
        $(this).parent().addClass('current')
      }
    })

    $('.responsive .icon-list').click(function () {
      $('.responsive .list').slideToggle()
    })
  },
  _initArticleCommon: function (tocLabel, siteViewLabel) {
    // TOC
    if ($('.b3-solo-list li').length > 0 && $(window).width() > 1000) {
      // add color to sidebar menu
      $('aside').addClass('has-toc')

      // append toc to sidebar menu
      var articleTocHTML = '<ul class="fn-clear"><li class="current" data-tab="toc">' +
        tocLabel
        + '</li><li data-tab="site">' + siteViewLabel +
        '</li></ul><section></section>'
      $('aside').prepend(articleTocHTML)
      var $sectionF = $('aside section:first').html($('.b3-solo-list')),
        $sectionL = $('aside section:last')
      $sectionF.height($(window).height() - 154).
        css({'overflow': 'auto', 'width': $('aside').width() + 'px'})
      $sectionL.hide()
      // 切换 tab
      $('aside > ul > li').click(function () {
        if ($(this).data('tab') === 'toc') {
          $sectionL.animate({
            'opacity': '0',
            'top': '-50px',
          }, 300, function () {
            $sectionF.show().css('top', '-50px')
            $sectionF.animate({
              'opacity': '1',
              'top': '0',
            }, 300).show()
          })
        } else {
          $sectionF.animate({
            'opacity': '0',
            'top': '-50px',
          }, 300, function () {
            $sectionF.hide().css('top', '-50px')
            $sectionL.animate({
              'opacity': '1',
              'top': '0',
            }, 300).show()
          }).hide()
        }
        $('aside > ul > li').removeClass('current')
        $(this).addClass('current')
      })

      $(window).scroll(function () {
        if ($(window).scrollTop() > 125) {
          $('aside section:eq(0)').css({
            position: 'fixed',
            top: '51px',
            backgroundColor: '#fff',
          })
        } else {
          $('aside section:eq(0)').css({
            position: 'inherit',
            borderLeft: 0,
          })
        }
      })
    }
  },
  initArticle: function (tocLabel, siteViewLabel) {
    this._initArticleCommon(tocLabel, siteViewLabel)

    setTimeout(function () {
      if ($('#externalRelevantArticlesWrap li').length === 0) {
        $('#externalRelevantArticlesWrap').next().remove()
        $('#externalRelevantArticlesWrap').remove()
      }

      if ($('#relevantArticlesWrap li').length === 0) {
        $('#relevantArticlesWrap').prev().remove()
        $('#relevantArticlesWrap').remove()
      }

      if ($('#randomArticlesWrap li').length === 0) {
        $('#randomArticlesWrap').prev().remove()
        $('#randomArticlesWrap').remove()
      }
    }, 1000)
  },
}
Skin.init()