(function () {
    'use strict';

    var textarea = document.getElementById('description');
    if (!textarea) return;

    var form = textarea.closest('form');
    if (!form) return;

    // Create editor container
    var editorContainer = document.createElement('div');
    editorContainer.id = 'description-editor';
    textarea.parentNode.insertBefore(editorContainer, textarea.nextSibling);

    // Hide original textarea
    textarea.style.display = 'none';

    // Determine initial content
    var initialContent = textarea.value || '';
    var isHtml = /<[a-z][\s\S]*>/i.test(initialContent);

    // Better-Table-Modul registrieren (idempotent)
    if (typeof quillBetterTable !== 'undefined') {
        Quill.register({ 'modules/better-table': quillBetterTable }, true);
    }

    // Initialize Quill auf Goldstandard-Compact (kein Image/Video)
    var quill = new Quill('#description-editor', {
        theme: 'snow',
        placeholder: 'Beschreibung eingeben...',
        modules: {
            toolbar: {
                container: window.QuillToolbarPresets.compact(),
                handlers: {
                    table: function () {
                        var tableModule = this.quill.getModule('better-table');
                        if (tableModule) tableModule.insertTable(3, 3);
                    }
                }
            },
            table: false,
            'better-table': window.QuillToolbarPresets.betterTableConfig(),
            keyboard: (typeof quillBetterTable !== 'undefined')
                ? { bindings: quillBetterTable.keyboardBindings }
                : undefined,
            imageResize: true
        }
    });

    // Load existing content via dangerouslyPasteHTML statt innerHTML —
    // so behält Quill 2.x auch alte Listen-Strukturen korrekt.
    if (initialContent !== '') {
        if (isHtml) {
            quill.clipboard.dangerouslyPasteHTML(0, initialContent, 'silent');
        } else {
            // Plain text: convert newlines to paragraphs
            var paragraphs = initialContent.split(/\n\n+/);
            var html = paragraphs.map(function (p) {
                var escaped = p.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
                escaped = escaped.replace(/\n/g, '<br>');
                return '<p>' + escaped + '</p>';
            }).join('');
            quill.clipboard.dangerouslyPasteHTML(0, html, 'silent');
        }
    }

    // Sync Quill content to textarea before form submit
    form.addEventListener('submit', function () {
        var html = quill.root.innerHTML || '';

        // Treat Quill empty state as empty string
        if (html === '<p><br></p>' || html.replace(/<p>\s*<br\s*\/?>\s*<\/p>/g, '').trim() === '') {
            textarea.value = '';
        } else {
            textarea.value = html;
        }
    });
})();