var svgEditorExtension_imagelib = (function () {
  'use strict';

  /**
   * @file ext-imagelib.js
   *
   * @license MIT
   *
   * @copyright 2010 Alexis Deveria
   *
   */
  var extImagelib = {
    name: 'imagelib',

    async init({
      $,
      decode64,
      importLocale,
      dropXMLInternalSubset
    }) {
      const imagelibStrings = await importLocale();
      const modularVersion = !('svgEditor' in window) || !window.svgEditor || window.svgEditor.modules !== false;
      const svgEditor = this;
      const {
        uiStrings,
        canvas: svgCanvas,
        curConfig: {
          extIconsPath
        }
      } = svgEditor;
      imagelibStrings.imgLibs = imagelibStrings.imgLibs.map(({
        name,
        url,
        description
      }) => {
        // Todo: Adopt some standard formatting library like `fluent.js` instead
        url = url // Keep these regexes as is in prep. for switching to `u` flag
        //  which will require escaping
        // eslint-disable-next-line unicorn/better-regex
        .replace(/\{path\}/g, extIconsPath).replace( // eslint-disable-next-line unicorn/better-regex
        /\{modularVersion\}/g, modularVersion ? imagelibStrings.moduleEnding || '-es' : '');
        return {
          name,
          url,
          description
        };
      });
      const allowedImageLibOrigins = imagelibStrings.imgLibs.map(({
        url
      }) => {
        try {
          return new URL(url).origin;
        } catch (err) {
          return location.origin;
        }
      });
      /**
      *
      * @returns {void}
      */

      function closeBrowser() {
        $('#imgbrowse_holder').hide();
        document.activeElement.blur(); // make sure focus is the body to correct issue #417
      }
      /**
      * @param {string} url
      * @returns {void}
      */


      function importImage(url) {
        const newImage = svgCanvas.addSVGElementFromJson({
          element: 'image',
          attr: {
            x: 0,
            y: 0,
            width: 0,
            height: 0,
            id: svgCanvas.getNextId(),
            style: 'pointer-events:inherit'
          }
        });
        svgCanvas.clearSelection();
        svgCanvas.addToSelection([newImage]);
        svgCanvas.setImageURL(url);
      }

      const pending = {};
      let mode = 's';
      let multiArr = [];
      let transferStopped = false;
      let preview, submit;
      /**
       * Contains the SVG to insert.
       * @typedef {PlainObject} ImageLibMessage
       * @property {"imagelib"} namespace Required to distinguish from any other messages of app.
       * @property {string} href Set to same value as previous `ImageLibMetaMessage` `id`.
       * @property {string} data The response (as an SVG string or URL)
      */

      /**
       * Used for setting meta-data before images are retrieved.
       * @typedef {PlainObject} ImageLibMetaMessage
       * @property {"imagelib"} namespace Required to distinguish from any other messages of app.
       * @property {string} name If the subsequent response is an SVG string or if `preview_url`
       *   is present, will be used as the title for the preview image. When an
       *   SVG string is present, will default to the first `<title>`'s contents or
       *   "(SVG #<Length of response>)" if none is present. Otherwise, if `preview_url`
       *   is present, will default to the empty string. Though `name` may be falsy,
       *   it is always expected to be present for meta messages.
       * @property {string} id Identifier (the expected `href` for a subsequent response message);
       * used for ensuring the subsequent response can be tied to this `ImageLibMetaMessage` object.
       * @property {string} [preview_url] When import mode is multiple, used to set an image
       * source along with the name/title. If the subsequent response is an SVG string
       * and there is no `preview_url`, the default will just be to show the
       * name/title. If the response is not an SVG string, the default will be to
       * show that response (i.e., the URL).
       * @property {string} entry Set automatically with div holding retrieving
       * message (until ready to delete)
       * @todo Should use a separate Map instead of `entry`
      */

      /**
       * @param {PlainObject} cfg
       * @param {string} cfg.origin
       * @param {ImageLibMetaMessage|ImageLibMessage|string} cfg.data String is deprecated when parsed to JSON `ImageLibMessage`
       * @returns {void}
       */

      async function onMessage({
        origin,
        data: response
      }) {
        // eslint-disable-line no-shadow
        if (!response || !['string', 'object'].includes(typeof response)) {
          // Do nothing
          return;
        }

        let id;
        let type;

        try {
          // Todo: This block can be removed (and the above check changed to
          //   insist on an object) if embedAPI moves away from a string to
          //   an object (if IE9 support not needed)
          response = typeof response === 'object' ? response : JSON.parse(response);

          if (response.namespace !== 'imagelib') {
            return;
          }

          if (!allowedImageLibOrigins.includes('*') && !allowedImageLibOrigins.includes(origin)) {
            // Todo: Surface this error to user?
            console.log(`Origin ${origin} not whitelisted for posting to ${window.origin}`); // eslint-disable-line no-console

            return;
          }

          const hasName = ('name' in response);
          const hasHref = ('href' in response);

          if (!hasName && transferStopped) {
            transferStopped = false;
            return;
          }

          if (hasHref) {
            id = response.href;
            response = response.data;
          } // Hide possible transfer dialog box


          $('#dialog_box').hide();
          type = hasName ? 'meta' : response.charAt(0);
        } catch (e) {
          // This block is for backward compatibility (for IAN and Openclipart);
          //   should otherwise return
          if (typeof response === 'string') {
            const char1 = response.charAt(0);

            if (char1 !== '{' && transferStopped) {
              transferStopped = false;
              return;
            }

            if (char1 === '|') {
              const secondpos = response.indexOf('|', 1);
              id = response.substr(1, secondpos - 1);
              response = response.substr(secondpos + 1);
              type = response.charAt(0);
            }
          }
        }

        let entry, curMeta, svgStr, imgStr;

        switch (type) {
          case 'meta':
            {
              // Metadata
              transferStopped = false;
              curMeta = response; // Should be safe to add dynamic property as passed metadata

              pending[curMeta.id] = curMeta; // lgtm [js/remote-property-injection]

              const name = curMeta.name || 'file';
              const message = uiStrings.notification.retrieving.replace('%s', name);

              if (mode !== 'm') {
                await $.process_cancel(message);
                transferStopped = true; // Should a message be sent back to the frame?

                $('#dialog_box').hide();
              } else {
                entry = $('<div>').text(message).data('id', curMeta.id);
                preview.append(entry);
                curMeta.entry = entry;
              }

              return;
            }

          case '<':
            svgStr = true;
            break;

          case 'd':
            {
              if (response.startsWith('data:image/svg+xml')) {
                const pre = 'data:image/svg+xml;base64,';
                const src = response.substring(pre.length);
                response = decode64(src);
                svgStr = true;
                break;
              } else if (response.startsWith('data:image/')) {
                imgStr = true;
                break;
              }
            }
          // Else fall through

          default:
            // TODO: See if there's a way to base64 encode the binary data stream
            // const str = 'data:;base64,' + svgedit.utilities.encode64(response, true);
            // Assume it's raw image data
            // importImage(str);
            // Don't give warning as postMessage may have been used by something else
            if (mode !== 'm') {
              closeBrowser();
            } else {
              pending[id].entry.remove();
            } // await $.alert('Unexpected data was returned: ' + response, function() {
            //   if (mode !== 'm') {
            //     closeBrowser();
            //   } else {
            //     pending[id].entry.remove();
            //   }
            // });


            return;
        }

        switch (mode) {
          case 's':
            // Import one
            if (svgStr) {
              svgCanvas.importSvgString(response);
            } else if (imgStr) {
              importImage(response);
            }

            closeBrowser();
            break;

          case 'm':
            {
              // Import multiple
              multiArr.push([svgStr ? 'svg' : 'img', response]);
              curMeta = pending[id];
              let title;

              if (svgStr) {
                if (curMeta && curMeta.name) {
                  title = curMeta.name;
                } else {
                  // Try to find a title
                  // `dropXMLInternalSubset` is to help prevent the billion laughs attack
                  const xml = new DOMParser().parseFromString(dropXMLInternalSubset(response), 'text/xml').documentElement; // lgtm [js/xml-bomb]

                  title = $(xml).children('title').first().text() || '(SVG #' + response.length + ')';
                }

                if (curMeta) {
                  preview.children().each(function () {
                    if ($(this).data('id') === id) {
                      if (curMeta.preview_url) {
                        $(this).html($('<span>').append($('<img>').attr('src', curMeta.preview_url), title));
                      } else {
                        $(this).text(title);
                      }

                      submit.removeAttr('disabled');
                    }
                  });
                } else {
                  preview.append($('<div>').text(title));
                  submit.removeAttr('disabled');
                }
              } else {
                if (curMeta && curMeta.preview_url) {
                  title = curMeta.name || '';
                  entry = $('<span>').append($('<img>').attr('src', curMeta.preview_url), title);
                } else {
                  entry = $('<img>').attr('src', response);
                }

                if (curMeta) {
                  preview.children().each(function () {
                    if ($(this).data('id') === id) {
                      $(this).html(entry);
                      submit.removeAttr('disabled');
                    }
                  });
                } else {
                  preview.append($('<div>').append(entry));
                  submit.removeAttr('disabled');
                }
              }

              break;
            }

          case 'o':
            {
              // Open
              if (!svgStr) {
                break;
              }

              closeBrowser();
              const ok = await svgEditor.openPrep();

              if (!ok) {
                return;
              }

              svgCanvas.clear();
              svgCanvas.setSvgString(response); // updateCanvas();

              break;
            }
        }
      } // Receive `postMessage` data


      window.addEventListener('message', onMessage, true);
      /**
      * @param {boolean} show
      * @returns {void}
      */

      function toggleMulti(show) {
        $('#lib_framewrap, #imglib_opts').css({
          right: show ? 200 : 10
        });

        if (!preview) {
          preview = $('<div id=imglib_preview>').css({
            position: 'absolute',
            top: 45,
            right: 10,
            width: 180,
            bottom: 45,
            background: '#fff',
            overflow: 'auto'
          }).insertAfter('#lib_framewrap');
          submit = $('<button disabled>Import selected</button>').appendTo('#imgbrowse').on('click touchend', function () {
            $.each(multiArr, function (i) {
              const type = this[0];
              const data = this[1];

              if (type === 'svg') {
                svgCanvas.importSvgString(data);
              } else {
                importImage(data);
              }

              svgCanvas.moveSelectedElements(i * 20, i * 20, false);
            });
            preview.empty();
            multiArr = [];
            $('#imgbrowse_holder').hide();
          }).css({
            position: 'absolute',
            bottom: 10,
            right: -10
          });
        }

        preview.toggle(show);
        submit.toggle(show);
      }
      /**
      *
      * @returns {void}
      */


      function showBrowser() {
        let browser = $('#imgbrowse');

        if (!browser.length) {
          $('<div id=imgbrowse_holder><div id=imgbrowse class=toolbar_button>' + '</div></div>').insertAfter('#svg_docprops');
          browser = $('#imgbrowse');
          const allLibs = imagelibStrings.select_lib;
          const libOpts = $('<ul id=imglib_opts>').appendTo(browser);
          const frame = $('<iframe src="javascript:0"/>').prependTo(browser).hide().wrap('<div id=lib_framewrap>');
          const header = $('<h1>').prependTo(browser).text(allLibs).css({
            position: 'absolute',
            top: 0,
            left: 0,
            width: '100%'
          });
          const cancel = $('<button>' + uiStrings.common.cancel + '</button>').appendTo(browser).on('click touchend', function () {
            $('#imgbrowse_holder').hide();
          }).css({
            position: 'absolute',
            top: 5,
            right: -10
          });
          const leftBlock = $('<span>').css({
            position: 'absolute',
            top: 5,
            left: 10
          }).appendTo(browser);
          const back = $('<button hidden>' + imagelibStrings.show_list + '</button>').appendTo(leftBlock).on('click touchend', function () {
            frame.attr('src', 'about:blank').hide();
            libOpts.show();
            header.text(allLibs);
            back.hide();
          }).css({
            'margin-right': 5
          }).hide();
          /* const type = */

          $('<select><option value=s>' + imagelibStrings.import_single + '</option><option value=m>' + imagelibStrings.import_multi + '</option><option value=o>' + imagelibStrings.open + '</option></select>').appendTo(leftBlock).change(function () {
            mode = $(this).val();

            switch (mode) {
              case 's':
              case 'o':
                toggleMulti(false);
                break;

              case 'm':
                // Import multiple
                toggleMulti(true);
                break;
            }
          }).css({
            'margin-top': 10
          });
          cancel.prepend($.getSvgIcon('cancel', true));
          back.prepend($.getSvgIcon('tool_imagelib', true));
          imagelibStrings.imgLibs.forEach(function ({
            name,
            url,
            description
          }) {
            $('<li>').appendTo(libOpts).text(name).on('click touchend', function () {
              frame.attr('src', url).show();
              header.text(name);
              libOpts.hide();
              back.show();
            }).append(`<span>${description}</span>`);
          });
        } else {
          $('#imgbrowse_holder').show();
        }
      }

      const buttons = [{
        id: 'tool_imagelib',
        type: 'app_menu',
        // _flyout
        icon: extIconsPath + 'imagelib.png',
        position: 4,
        events: {
          mouseup: showBrowser
        }
      }];
      return {
        svgicons: extIconsPath + 'ext-imagelib.xml',
        buttons: imagelibStrings.buttons.map((button, i) => {
          return Object.assign(buttons[i], button);
        }),

        callback() {
          $('<style>').text('#imgbrowse_holder {' + 'position: absolute;' + 'top: 0;' + 'left: 0;' + 'width: 100%;' + 'height: 100%;' + 'background-color: rgba(0, 0, 0, .5);' + 'z-index: 5;' + '}' + '#imgbrowse {' + 'position: absolute;' + 'top: 25px;' + 'left: 25px;' + 'right: 25px;' + 'bottom: 25px;' + 'min-width: 300px;' + 'min-height: 200px;' + 'background: #B0B0B0;' + 'border: 1px outset #777;' + '}' + '#imgbrowse h1 {' + 'font-size: 20px;' + 'margin: .4em;' + 'text-align: center;' + '}' + '#lib_framewrap,' + '#imgbrowse > ul {' + 'position: absolute;' + 'top: 45px;' + 'left: 10px;' + 'right: 10px;' + 'bottom: 10px;' + 'background: white;' + 'margin: 0;' + 'padding: 0;' + '}' + '#imgbrowse > ul {' + 'overflow: auto;' + '}' + '#imgbrowse > div {' + 'border: 1px solid #666;' + '}' + '#imglib_preview > div {' + 'padding: 5px;' + 'font-size: 12px;' + '}' + '#imglib_preview img {' + 'display: block;' + 'margin: 0 auto;' + 'max-height: 100px;' + '}' + '#imgbrowse li {' + 'list-style: none;' + 'padding: .5em;' + 'background: #E8E8E8;' + 'border-bottom: 1px solid #B0B0B0;' + 'line-height: 1.2em;' + 'font-style: sans-serif;' + '}' + '#imgbrowse li > span {' + 'color: #666;' + 'font-size: 15px;' + 'display: block;' + '}' + '#imgbrowse li:hover {' + 'background: #FFC;' + 'cursor: pointer;' + '}' + '#imgbrowse iframe {' + 'width: 100%;' + 'height: 100%;' + 'border: 0;' + '}').appendTo('head');
        }

      };
    }

  };

  return extImagelib;

}());
