text: /* eslint-disable func-names, prefer-arrow-callback, space-before-function-paren, no-var, prefer-rest-params, wrap-iife, one-var, one-var-declaration-per-line, consistent-return, no-param-reassign, max-len */
  
  (function() {
    window.SingleFileDiff = (function() {
      var COLLAPSED_HTML, ERROR_HTML, LOADING_HTML, WRAPPER;
  
      WRAPPER = '<div class="diff-content"></div>';
  
      LOADING_HTML = '<i class="fa fa-spinner fa-spin"></i>';
  
      ERROR_HTML = '<div class="nothing-here-block"><i class="fa fa-warning"></i> Could not load diff</div>';
  
      COLLAPSED_HTML = '<div class="nothing-here-block diff-collapsed">This diff is collapsed. <a class="click-to-expand">Click to expand it.</a></div>';
  
      function SingleFileDiff(file) {
        this.file = file;
        this.toggleDiff = this.toggleDiff.bind(this);
        this.content = $('.diff-content', this.file);
        this.$toggleIcon = $('.diff-toggle-caret', this.file);
        this.diffForPath = this.content.find('[data-diff-for-path]').data('diff-for-path');
        this.isOpen = !this.diffForPath;
        if (this.diffForPath) {
          this.collapsedContent = this.content;
          this.loadingContent = $(WRAPPER).addClass('loading').html(LOADING_HTML).hide();
          this.content = null;
          this.collapsedContent.after(this.loadingContent);
          this.$toggleIcon.addClass('fa-caret-right');
        } else {
          this.collapsedContent = $(WRAPPER).html(COLLAPSED_HTML).hide();
          this.content.after(this.collapsedContent);
          this.$toggleIcon.addClass('fa-caret-down');
        }
  
        $('.js-file-title, .click-to-expand', this.file).on('click', (function (e) {
          this.toggleDiff($(e.target));
        }).bind(this));
      }
  
      SingleFileDiff.prototype.toggleDiff = function($target, cb) {
        if (!$target.hasClass('js-file-title') && !$target.hasClass('click-to-expand') && !$target.hasClass('diff-toggle-caret')) return;
        this.isOpen = !this.isOpen;
        if (!this.isOpen && !this.hasError) {
          this.content.hide();
          this.$toggleIcon.addClass('fa-caret-right').removeClass('fa-caret-down');
          this.collapsedContent.show();
          if (typeof gl.diffNotesCompileComponents !== 'undefined') {
            gl.diffNotesCompileComponents();
          }
        } else if (this.content) {
          this.collapsedContent.hide();
          this.content.show();
          this.$toggleIcon.addClass('fa-caret-down').removeClass('fa-caret-right');
          if (typeof gl.diffNotesCompileComponents !== 'undefined') {
            gl.diffNotesCompileComponents();
          }
        } else {
          this.$toggleIcon.addClass('fa-caret-down').removeClass('fa-caret-right');
          return this.getContentHTML(cb);
        }
      };
  
      SingleFileDiff.prototype.getContentHTML = function(cb) {
        this.collapsedContent.hide();
        this.loadingContent.show();
        $.get(this.diffForPath, (function(_this) {
          return function(data) {
            _this.loadingContent.hide();
            if (data.html) {
              _this.content = $(data.html);
              _this.content.syntaxHighlight();
            } else {
              _this.hasError = true;
              _this.content = $(ERROR_HTML);
            }
            _this.collapsedContent.after(_this.content);
  
            if (typeof gl.diffNotesCompileComponents !== 'undefined') {
              gl.diffNotesCompileComponents();
            }
  
            if (cb) cb();
          };
        })(this));
      };
  
      return SingleFileDiff;
    })();
  
    $.fn.singleFileDiff = function() {
      return this.each(function() {
        if (!$.data(this, 'singleFileDiff')) {
          return $.data(this, 'singleFileDiff', new window.SingleFileDiff(this));
        }
      });
    };
  }).call(window);
  