/* globals jQuery, svgEditor, svgedit, svgCanvas, canvg */
/*
 * ext-server_moinsave.js
 *
 * Licensed under the MIT License
 *
 * Copyright(c) 2010 Alexis Deveria
 *              2011 MoinMoin:ReimarBauer
 *                   adopted for moinmoins item storage. it sends in one post png and svg data
 *                   (I agree to dual license my work to additional GPLv2 or later)
 *
 */

svgEditor.addExtension('server_opensave', {
  callback () {
    const $ = jQuery;
    const Utils = svgedit.utilities;
    const saveSvgAction = '/+modify';

    // Create upload target (hidden iframe)
    /* const target = */ $('<iframe name="output_frame" src="#"/>').hide().appendTo('body');

    svgEditor.setCustomHandlers({
      save (win, data) {
        const svg = '<?xml version="1.0"?>\n' + data;
        const qstr = $.param.querystring();
        const name = qstr.substr(9).split('/+get/')[1];
        const svgData = Utils.encode64(svg);
        if (!$('#export_canvas').length) {
          $('<canvas>', {id: 'export_canvas'}).hide().appendTo('body');
        }
        const c = $('#export_canvas')[0];
        c.width = svgCanvas.contentW;
        c.height = svgCanvas.contentH;
        Utils.buildCanvgCallback(function () {
          canvg(c, svg, {renderCallback () {
            const datauri = c.toDataURL('image/png');
            // const {uiStrings} = svgEditor;
            const pngData = Utils.encode64(datauri); // Brett: This encoding seems unnecessary
            /* const form = */ $('<form>').attr({
              method: 'post',
              action: saveSvgAction + '/' + name,
              target: 'output_frame'
            }).append('<input type="hidden" name="png_data" value="' + pngData + '">')
              .append('<input type="hidden" name="filepath" value="' + svgData + '">')
              .append('<input type="hidden" name="filename" value="' + 'drawing.svg">')
              .append('<input type="hidden" name="contenttype" value="application/x-svgdraw">')
              .appendTo('body')
              .submit().remove();
          }});
        })();
        alert('Saved! Return to Item View!');
        top.window.location = '/' + name;
      }
    });
  }
});