text: "use strict";
  
  /**
   * Handle pasting images from clipboard.
   * @param e  - event
   * @param editor - editor instance
   */
  function editorPaste(e, editor) {
      if (!e.clipboardData) return;
      let items = e.clipboardData.items;
      if (!items) return;
      for (let i = 0; i < items.length; i++) {
          if (items[i].type.indexOf("image") === -1) return;
  
          let file = items[i].getAsFile();
          let formData = new FormData();
          let ext = 'png';
          let xhr = new XMLHttpRequest();
  
          if (file.name) {
              let fileNameMatches = file.name.match(/\.(.+)$/);
              if (fileNameMatches) {
                  ext = fileNameMatches[1];
              }
          }
  
          let id = "image-" + Math.random().toString(16).slice(2);
          let loadingImage = window.baseUrl('/loading.gif');
          editor.execCommand('mceInsertContent', false, `<img src="${loadingImage}" id="${id}">`);
  
          let remoteFilename = "image-" + Date.now() + "." + ext;
          formData.append('file', file, remoteFilename);
          formData.append('_token', document.querySelector('meta[name="token"]').getAttribute('content'));
  
          xhr.open('POST', window.baseUrl('/images/gallery/upload'));
          xhr.onload = function () {
              if (xhr.status === 200 || xhr.status === 201) {
                  let result = JSON.parse(xhr.responseText);
                  editor.dom.setAttrib(id, 'src', result.thumbs.display);
              } else {
                  console.log('An error occurred uploading the image', xhr.responseText);
                  editor.dom.remove(id);
              }
          };
          xhr.send(formData);
          
      }
  }
  
  function registerEditorShortcuts(editor) {
      // Headers
      for (let i = 1; i < 5; i++) {
          editor.addShortcut('meta+' + i, '', ['FormatBlock', false, 'h' + i]);
      }
  
      // Other block shortcuts
      editor.addShortcut('meta+q', '', ['FormatBlock', false, 'blockquote']);
      editor.addShortcut('meta+d', '', ['FormatBlock', false, 'p']);
      editor.addShortcut('meta+e', '', ['FormatBlock', false, 'pre']);
      editor.addShortcut('meta+shift+E', '', ['FormatBlock', false, 'code']);
  }
  
  export default function() {
      let settings = {
          selector: '#html-editor',
          content_css: [
              window.baseUrl('/css/styles.css'),
              window.baseUrl('/libs/material-design-iconic-font/css/material-design-iconic-font.min.css')
          ],
          body_class: 'page-content',
          relative_urls: false,
          remove_script_host: false,
          document_base_url: window.baseUrl('/'),
          statusbar: false,
          menubar: false,
          paste_data_images: false,
          extended_valid_elements: 'pre[*]',
          automatic_uploads: false,
          valid_children: "-div[p|pre|h1|h2|h3|h4|h5|h6|blockquote]",
          plugins: "image table textcolor paste link autolink fullscreen imagetools code customhr autosave lists",
          imagetools_toolbar: 'imageoptions',
          toolbar: "undo redo | styleselect | bold italic underline strikethrough superscript subscript | forecolor backcolor | alignleft aligncenter alignright alignjustify | bullist numlist outdent indent | table image-insert link hr | removeformat code fullscreen",
          content_style: "body {padding-left: 15px !important; padding-right: 15px !important; margin:0!important; margin-left:auto!important;margin-right:auto!important;}",
          style_formats: [
              {title: "Header Large", format: "h2"},
              {title: "Header Medium", format: "h3"},
              {title: "Header Small", format: "h4"},
              {title: "Header Tiny", format: "h5"},
              {title: "Paragraph", format: "p", exact: true, classes: ''},
              {title: "Blockquote", format: "blockquote"},
              {title: "Code Block", icon: "code", format: "pre"},
              {title: "Inline Code", icon: "code", inline: "code"},
              {title: "Callouts", items: [
                  {title: "Success", block: 'p', exact: true, attributes : {'class' : 'callout success'}},
                  {title: "Info", block: 'p', exact: true, attributes : {'class' : 'callout info'}},
                  {title: "Warning", block: 'p', exact: true, attributes : {'class' : 'callout warning'}},
                  {title: "Danger", block: 'p', exact: true, attributes : {'class' : 'callout danger'}}
              ]}
          ],
          style_formats_merge: false,
          formats: {
              alignleft: {selector: 'p,h1,h2,h3,h4,h5,h6,td,th,div,ul,ol,li,table,img', classes: 'align-left'},
              aligncenter: {selector: 'p,h1,h2,h3,h4,h5,h6,td,th,div,ul,ol,li,table,img', classes: 'align-center'},
              alignright: {selector: 'p,h1,h2,h3,h4,h5,h6,td,th,div,ul,ol,li,table,img', classes: 'align-right'},
          },
          file_browser_callback: function (field_name, url, type, win) {
  
              if (type === 'file') {
                  window.showEntityLinkSelector(function(entity) {
                      let originalField = win.document.getElementById(field_name);
                      originalField.value = entity.link;
                      $(originalField).closest('.mce-form').find('input').eq(2).val(entity.name);
                  });
              }
  
              if (type === 'image') {
                  // Show image manager
                  window.ImageManager.showExternal(function (image) {
  
                      // Set popover link input to image url then fire change event
                      // to ensure the new value sticks
                      win.document.getElementById(field_name).value = image.url;
                      if ("createEvent" in document) {
                          let evt = document.createEvent("HTMLEvents");
                          evt.initEvent("change", false, true);
                          win.document.getElementById(field_name).dispatchEvent(evt);
                      } else {
                          win.document.getElementById(field_name).fireEvent("onchange");
                      }
  
                      // Replace the actively selected content with the linked image
                      let html = `<a href="${image.url}" target="_blank">`;
                      html += `<img src="${image.thumbs.display}" alt="${image.name}">`;
                      html += '</a>';
                      win.tinyMCE.activeEditor.execCommand('mceInsertContent', false, html);
                  });
              }
  
          },
          paste_preprocess: function (plugin, args) {
              let content = args.content;
              if (content.indexOf('<img src="file://') !== -1) {
                  args.content = '';
              }
          },
          extraSetups: [],
          setup: function (editor) {
  
              // Run additional setup actions
              // Used by the angular side of things
              for (let i = 0; i < settings.extraSetups.length; i++) {
                  settings.extraSetups[i](editor);
              }
  
              registerEditorShortcuts(editor);
  
              let wrap;
  
              function hasTextContent(node) {
                  return node && !!( node.textContent || node.innerText );
              }
  
              editor.on('dragstart', function () {
                  let node = editor.selection.getNode();
  
                  if (node.nodeName !== 'IMG') return;
                  wrap = editor.dom.getParent(node, '.mceTemp');
  
                  if (!wrap && node.parentNode.nodeName === 'A' && !hasTextContent(node.parentNode)) {
                      wrap = node.parentNode;
                  }
              });
  
              editor.on('drop', function (event) {
                  let dom = editor.dom,
                      rng = tinymce.dom.RangeUtils.getCaretRangeFromPoint(event.clientX, event.clientY, editor.getDoc());
  
                  // Don't allow anything to be dropped in a captioned image.
                  if (dom.getParent(rng.startContainer, '.mceTemp')) {
                      event.preventDefault();
                  } else if (wrap) {
                      event.preventDefault();
  
                      editor.undoManager.transact(function () {
                          editor.selection.setRng(rng);
                          editor.selection.setNode(wrap);
                          dom.remove(wrap);
                      });
                  }
  
                  wrap = null;
              });
  
              // Custom Image picker button
              editor.addButton('image-insert', {
                  title: 'My title',
                  icon: 'image',
                  tooltip: 'Insert an image',
                  onclick: function () {
                      window.ImageManager.showExternal(function (image) {
                          let html = `<a href="${image.url}" target="_blank">`;
                          html += `<img src="${image.thumbs.display}" alt="${image.name}">`;
                          html += '</a>';
                          editor.execCommand('mceInsertContent', false, html);
                      });
                  }
              });
  
              // Paste image-uploads
              editor.on('paste', function(event) {
                  editorPaste(event, editor);
              });
          }
      };
      return settings;
  }