/* /assets/js/bridge/blocks-placeholder.js (LOG-KONTROLLIERT) */
(function () {
    const PluginName = 'blocks-placeholder';
    const B = window.BridgeParts || (window.BridgeParts = {});

    if (B.LOG_CONFIG && B.LOG_CONFIG.PLUGINS) {
        B.LOG_CONFIG.PLUGINS[PluginName] = false; // Lokaler Schalter für dieses Plugin
    }

    const log = (type, message, color = '#FFD700', logType = 'info', force = false) => {
        if (typeof B.log === 'function') {
            B.log(PluginName, `[${type}] ${message}`, color, logType, force);
        } else if (logType === 'error') {
            console.error(`%c[${PluginName} - ${type}] %c${message}`, `color:red; font-weight:bold;`, 'color:inherit;');
        }
    };

    log('FILE CHECK', 'Placeholder-Datei-IIFE startet.');

    if (window.__PLACEHOLDER_BLOCKS_LOADED) return;
    window.__PLACEHOLDER_BLOCKS_LOADED = true;

    const TARGET_CAT_ID = 'placeholders';
    const PLACEHOLDER_COMPONENT = 'placeholder-block';
    const ALL_PLACEHOLDER_BLOCK_IDS = [];

    const placeholderSchemaStore = {
        promise: null,
        tables: [],
        status: null,
        statusPromise: null,
    };

    const createEl = (tag, props = {}, children = []) => {
        const el = document.createElement(tag);
        Object.entries(props || {}).forEach(([key, value]) => {
            if (value === undefined || value === null) return;
            if (key === 'className') {
                el.className = value;
            } else if (key === 'text') {
                el.textContent = value;
            } else if (key === 'html') {
                el.innerHTML = value;
            } else if (key in el) {
                el[key] = value;
            } else {
                el.setAttribute(key, value);
            }
        });
        (Array.isArray(children) ? children : [children]).forEach(child => {
            if (child) el.appendChild(child);
        });
        return el;
    };

    const applyInputStyles = (el) => {
        if (!el) return el;
        el.style.width = '100%';
        el.style.boxSizing = 'border-box';
        el.style.padding = '6px 8px';
        el.style.border = '1px solid #cbd5f5';
        el.style.borderRadius = '4px';
        el.style.fontSize = '13px';
        el.style.fontFamily = 'inherit';
        return el;
    };

    const syncSelectOptions = (selectEl, options, selected) => {
        if (!selectEl) return;
        while (selectEl.firstChild) {
            selectEl.removeChild(selectEl.firstChild);
        }
        (options || []).forEach(opt => {
            const optionEl = document.createElement('option');
            optionEl.value = opt.id ?? opt.value ?? '';
            optionEl.textContent = opt.label ?? opt.text ?? '';
            if (opt.disabled) optionEl.disabled = true;
            selectEl.appendChild(optionEl);
        });
        if (selected !== undefined && selected !== null) {
            selectEl.value = selected;
        }
    };

    const buildField = (labelText, control) => {
        const controlId = `bridge-placeholder-field-${Math.random().toString(36).slice(2)}`;
        control.id = controlId;
        const label = createEl('label', { htmlFor: controlId, text: labelText });
        label.style.display = 'block';
        label.style.fontWeight = '600';
        label.style.fontSize = '13px';
        label.style.marginBottom = '4px';
        const wrapper = createEl('div', { className: 'bridge-placeholder-field' }, [label, control]);
        wrapper.style.marginBottom = '12px';
        return wrapper;
    };

    const openPlaceholderModal = (editor, component) => {
        if (!editor || !component || !component.is || !component.is(PLACEHOLDER_COMPONENT)) return;
        const modal = editor.Modal;
        if (!modal) return;

        const attrs = component.getAttributes ? component.getAttributes() : {};
        const initialType = attrs['data-placeholder-type'] || 'custom';
        const initialKey = attrs['data-placeholder-key'] || 'UEBERSCHRIFT';
        const initialTable = attrs['data-placeholder-table'] || '';
        const initialColumn = attrs['data-placeholder-column'] || '';

        const container = createEl('div', { className: 'bridge-placeholder-modal' });
        container.style.padding = '8px 4px';

        const form = createEl('form', { className: 'bridge-placeholder-form' });
        form.style.display = 'flex';
        form.style.flexDirection = 'column';

        const typeSelect = applyInputStyles(createEl('select'));
        [
            { id: 'custom', label: 'Placeholder (Text)' },
            { id: 'database', label: 'Placeholder (DB)' },
        ].forEach(opt => {
            const optionEl = createEl('option', { value: opt.id, text: opt.label });
            typeSelect.appendChild(optionEl);
        });
        typeSelect.value = initialType;

        const keyInput = applyInputStyles(createEl('input', { type: 'text', value: initialKey }));
        keyInput.placeholder = 'z.B. UEBERSCHRIFT';

        const tableSelect = applyInputStyles(createEl('select'));
        const columnSelect = applyInputStyles(createEl('select'));
        tableSelect.disabled = true;
        columnSelect.disabled = true;

        const dbMessage = createEl('p', { className: 'bridge-placeholder-hint', text: '' });
        dbMessage.style.fontSize = '12px';
        dbMessage.style.margin = '4px 0 0';
        dbMessage.style.color = '#475569';

        const columnMessage = createEl('p', { className: 'bridge-placeholder-hint', text: '' });
        columnMessage.style.fontSize = '12px';
        columnMessage.style.margin = '4px 0 0';
        columnMessage.style.color = '#475569';

        const customWrap = createEl('div', { className: 'bridge-placeholder-section' }, [
            buildField('Bezeichner', keyInput),
        ]);

        const dbWrap = createEl('div', { className: 'bridge-placeholder-section' }, [
            buildField('Tabelle', tableSelect),
            dbMessage,
            buildField('Feld', columnSelect),
            columnMessage,
        ]);

        const errorBox = createEl('p', { className: 'bridge-placeholder-error', text: '' });
        errorBox.style.fontSize = '12px';
        errorBox.style.color = '#b91c1c';
        errorBox.style.margin = '4px 0 0';

        form.appendChild(buildField('Typ', typeSelect));
        form.appendChild(customWrap);
        form.appendChild(dbWrap);
        form.appendChild(errorBox);

        const actions = createEl('div', { className: 'bridge-placeholder-actions' });
        actions.style.marginTop = '16px';
        actions.style.display = 'flex';
        actions.style.justifyContent = 'flex-end';
        actions.style.gap = '8px';

        const cancelBtn = createEl('button', { type: 'button', text: 'Abbrechen' });
        cancelBtn.style.padding = '6px 12px';
        cancelBtn.style.border = '1px solid #cbd5f5';
        cancelBtn.style.borderRadius = '4px';
        cancelBtn.style.background = '#f8fafc';
        cancelBtn.style.cursor = 'pointer';

        const saveBtn = createEl('button', { type: 'submit', text: 'Speichern' });
        saveBtn.style.padding = '6px 16px';
        saveBtn.style.border = '1px solid #0ea5e9';
        saveBtn.style.background = '#0ea5e9';
        saveBtn.style.color = '#fff';
        saveBtn.style.borderRadius = '4px';
        saveBtn.style.cursor = 'pointer';

        actions.appendChild(cancelBtn);
        actions.appendChild(saveBtn);
        form.appendChild(actions);
        container.appendChild(form);

        let tablesCache = placeholderSchemaStore.tables || [];

        const toggleSections = () => {
            const type = typeSelect.value || 'custom';
            customWrap.style.display = type === 'custom' ? '' : 'none';
            dbWrap.style.display = type === 'database' ? '' : 'none';
        };

        const populateColumns = (tableName, preferredColumn) => {
            const table = (tablesCache || []).find(tbl => (tbl.name || '').toLowerCase() === (tableName || '').toLowerCase());
            const columns = table && Array.isArray(table.columns) ? table.columns : [];
            if (!columns.length) {
                syncSelectOptions(columnSelect, [{ id: '', label: columns.length ? '– Feld wählen –' : 'Keine Felder verfügbar' }], '');
                columnSelect.disabled = true;
                columnMessage.textContent = table ? 'Diese Tabelle enthält keine Felder.' : 'Bitte zuerst eine Tabelle wählen.';
                return;
            }
            const opts = columns.map(col => ({
                id: col.name,
                label: col.name + (col.type ? ` (${col.type})` : ''),
            }));
            syncSelectOptions(columnSelect, opts, preferredColumn || initialColumn || opts[0].id);
            columnSelect.disabled = false;
            columnMessage.textContent = '';
        };

        const populateTables = (tables) => {
            tablesCache = Array.isArray(tables) ? tables : [];
            if (!tablesCache.length) {
                syncSelectOptions(tableSelect, [{ id: '', label: 'Keine Tabellen gefunden' }], '');
                tableSelect.disabled = true;
                columnSelect.disabled = true;
                dbMessage.textContent = 'Kein Tabellen-Schema verfügbar. Bitte Bridge-Setup prüfen.';
                columnMessage.textContent = '';
                return;
            }
            const opts = tablesCache.map(tbl => ({ id: tbl.name, label: tbl.name }));
            syncSelectOptions(tableSelect, opts, initialTable || opts[0].id);
            tableSelect.disabled = false;
            dbMessage.textContent = '';
            populateColumns(tableSelect.value, initialColumn);
        };

        const loadTables = () => {
            if (placeholderSchemaStore.tables && placeholderSchemaStore.tables.length) {
                populateTables(placeholderSchemaStore.tables);
                return;
            }
            dbMessage.textContent = 'Tabellen werden geladen …';
            fetchPlaceholderSchema()
                .then(populateTables)
                .catch(() => {
                    populateTables([]);
                });
        };

        tableSelect.addEventListener('change', () => {
            populateColumns(tableSelect.value);
        });

        typeSelect.addEventListener('change', () => {
            toggleSections();
            if (typeSelect.value === 'database' && (!tablesCache || !tablesCache.length)) {
                loadTables();
            }
        });

        cancelBtn.addEventListener('click', (e) => {
            e.preventDefault();
            modal.close();
        });

        form.addEventListener('submit', (e) => {
            e.preventDefault();
            errorBox.textContent = '';
            const type = typeSelect.value || 'custom';
            if (type === 'custom') {
                const key = (keyInput.value || '').trim();
                if (!key) {
                    errorBox.textContent = 'Bitte einen Bezeichner eingeben.';
                    keyInput.focus();
                    return;
                }
                component.addAttributes({
                    'data-placeholder-type': 'custom',
                    'data-placeholder-key': key,
                    'data-placeholder-table': '',
                    'data-placeholder-column': '',
                });
            } else {
                const table = tableSelect.value || '';
                const column = columnSelect.value || '';
                if (!table || !column) {
                    errorBox.textContent = 'Bitte Tabelle und Feld auswählen.';
                    if (!table) {
                        tableSelect.focus();
                    } else {
                        columnSelect.focus();
                    }
                    return;
                }
                component.addAttributes({
                    'data-placeholder-type': 'database',
                    'data-placeholder-key': '',
                    'data-placeholder-table': table,
                    'data-placeholder-column': column,
                });
            }
            modal.close();
        });

        toggleSections();
        if (typeSelect.value === 'database') {
            loadTables();
        }

        modal.setTitle('Placeholder bearbeiten');
        modal.setContent(container);
        modal.open();
        if (editor.getSelected() !== component) {
            editor.select && editor.select(component);
        }
    };

    function addOnce(bm, id, def, category = TARGET_CAT_ID) {
        try {
            bm.add(id, { ...def, category });
            ALL_PLACEHOLDER_BLOCK_IDS.push(id);
            log('BLOCK ADD', `Block '${id}' erfolgreich hinzugefügt.`, '#B8860B');
        } catch (e) {
            log('BLOCK ERROR', `Fehler beim Hinzufügen von Block '${id}': ${e.message}`, 'red', 'error');
        }
    }

    const ensureBridgeAvailability = () => {
        if (placeholderSchemaStore.status !== null) {
            return Promise.resolve(placeholderSchemaStore.status);
        }
        if (placeholderSchemaStore.statusPromise) {
            return placeholderSchemaStore.statusPromise;
        }
        const base = B.API_KERNEL_URL || '/api.php';
        const sep = base.includes('?') ? '&' : '?';
        const url = `${base}${sep}action=placeholders.status`;
        placeholderSchemaStore.statusPromise = fetch(url, { credentials: 'include' })
            .then(res => {
                if (!res.ok) throw new Error(`HTTP ${res.status}`);
                return res.json();
            })
            .then(data => {
                const available = !!(data && (data.available || (data.settings && data.settings.available)));
                placeholderSchemaStore.status = available;
                placeholderSchemaStore.statusPromise = null;
                if (!available) {
                    log('PLACEHOLDER INFO', 'Bridge-Placeholders nicht konfiguriert – DB-Funktionen deaktiviert.', '#64748b');
                }
                return available;
            })
            .catch(err => {
                placeholderSchemaStore.status = false;
                placeholderSchemaStore.statusPromise = null;
                log('PLACEHOLDER WARN', `Bridge-Status konnte nicht geprüft werden: ${err && err.message ? err.message : err}`, '#b45309');
                return false;
            });
        return placeholderSchemaStore.statusPromise;
    };

    const fetchPlaceholderSchema = () => {
        if (placeholderSchemaStore.promise) return placeholderSchemaStore.promise;
        placeholderSchemaStore.promise = ensureBridgeAvailability().then(isAvailable => {
            if (!isAvailable) throw new Error('Bridge not available');
            const base = B.API_KERNEL_URL || '/api.php';
            const sep = base.includes('?') ? '&' : '?';
            const url = `${base}${sep}action=placeholders.schema`;
            return fetch(url, { credentials: 'include' })
                .then(res => {
                    if (!res.ok) throw new Error(`HTTP ${res.status}`);
                    return res.json();
                })
                .then(data => {
                    const tbls = data && Array.isArray(data.tables) ? data.tables : [];
                    placeholderSchemaStore.tables = tbls;
                    return placeholderSchemaStore.tables;
                });
        }).catch(err => {
            placeholderSchemaStore.tables = [];
            placeholderSchemaStore.promise = null;
            const msg = err && err.message ? err.message : err;
            if (msg === 'Bridge not available') {
                log('PLACEHOLDER INFO', 'Schema-Abfrage übersprungen (keine Bridge verfügbar).', '#64748b');
            } else {
                log('PLACEHOLDER ERROR', `Schema konnte nicht geladen werden: ${msg}`, 'red', 'error');
            }
            throw err;
        });
        return placeholderSchemaStore.promise;
    };

    const getTraitByName = (model, name) => {
        if (typeof model.getTrait === 'function') return model.getTrait(name);
        const traits = model.get('traits');
        if (!traits) return null;
        if (typeof traits.where === 'function') {
            const found = traits.where({ name });
            return found && found[0];
        }
        if (Array.isArray(traits.models)) {
            return traits.models.find(t => t.get && t.get('name') === name) || null;
        }
        return null;
    };

    const ensurePlaceholderComponent = (editor) => {
        const domc = editor.DomComponents;
        if (domc.getType(PLACEHOLDER_COMPONENT)) return;

        const baseType = domc.getType('text') || domc.getType('default') || {};
        const BaseModel = baseType.model || editor.DomComponents.Component;
        const BaseView = baseType.view || editor.DomComponents.View;

        const placeholderDefaults = {};
        if (BaseModel.prototype && BaseModel.prototype.defaults) {
            for (const key in BaseModel.prototype.defaults) {
                placeholderDefaults[key] = BaseModel.prototype.defaults[key];
            }
        }
        placeholderDefaults.name = 'Placeholder';
        placeholderDefaults.tagName = 'span';
        placeholderDefaults.droppable = false;
        placeholderDefaults.attributes = {
            'data-placeholder-type': 'custom',
            'data-placeholder-key': 'UEBERSCHRIFT',
        };
        placeholderDefaults.traits = [
            {
                type: 'select',
                name: 'data-placeholder-type',
                label: 'Typ',
                options: [
                    { id: 'custom', label: 'Allgemein' },
                    { id: 'database', label: 'Datenbank' },
                ],
                changeProp: true,
            },
            {
                type: 'text',
                name: 'data-placeholder-key',
                label: 'Bezeichner',
                placeholder: 'UEBERSCHRIFT',
                changeProp: true,
            },
            {
                type: 'select',
                name: 'data-placeholder-table',
                label: 'Tabelle',
                options: [],
                changeProp: true,
            },
            {
                type: 'select',
                name: 'data-placeholder-column',
                label: 'Feld',
                options: [],
                changeProp: true,
            },
        ];
        const baseToolbar = Array.isArray(placeholderDefaults.toolbar) ? placeholderDefaults.toolbar.slice() : [];
        baseToolbar.push({
            attributes: { class: 'fa fa-edit', title: 'Placeholder bearbeiten' },
            command: 'bridge-placeholder:edit',
        });
        placeholderDefaults.toolbar = baseToolbar;

        const PlaceholderModel = BaseModel.extend({
            init() {
                this.listenTo(this, 'change:attributes', this.updatePlaceholderState);
                this.updatePlaceholderState();
                fetchPlaceholderSchema()
                    .then(() => this.updateSchemaTraits())
                    .catch(() => this.updateSchemaTraits([]));
            },

            updatePlaceholderState() {
                const attrs = this.getAttributes();
                const type = attrs['data-placeholder-type'] || 'custom';
                if (type === 'database' && placeholderSchemaStore.tables.length === 0) {
                    this.addAttributes({ 'data-placeholder-type': 'custom' });
                }
                this.updateTraitVisibility();
                this.updateSchemaTraits();
                this.updateLabel();
            },

            updateTraitVisibility() {
                const attrs = this.getAttributes();
                const type = attrs['data-placeholder-type'] || 'custom';
                const isDb = type === 'database';
                const tableTrait = getTraitByName(this, 'data-placeholder-table');
                const columnTrait = getTraitByName(this, 'data-placeholder-column');
                const keyTrait = getTraitByName(this, 'data-placeholder-key');

                if (tableTrait && tableTrait.view && tableTrait.view.el) {
                    tableTrait.view.el.style.display = isDb ? '' : 'none';
                }
                if (columnTrait && columnTrait.view && columnTrait.view.el) {
                    columnTrait.view.el.style.display = isDb ? '' : 'none';
                }
                if (keyTrait && keyTrait.view && keyTrait.view.el) {
                    keyTrait.view.el.style.display = isDb ? 'none' : '';
                }
            },

            updateSchemaTraits(tablesOverride) {
                const tables = Array.isArray(tablesOverride) ? tablesOverride : placeholderSchemaStore.tables;
                const tableTrait = getTraitByName(this, 'data-placeholder-table');
                const columnTrait = getTraitByName(this, 'data-placeholder-column');
                const loading = !tablesOverride && placeholderSchemaStore.promise && !tables.length;

                if (tableTrait) {
                    let opts;
                    if (tables.length) {
                        opts = tables.map(function (tbl) { return { id: tbl.name, label: tbl.name }; });
                    } else if (loading) {
                        opts = [{ id: '', label: 'Tabellen werden geladen…', disabled: true }];
                    } else {
                        opts = [{ id: '', label: 'Keine Tabellen verfügbar', disabled: true }];
                    }
                    setTraitOptions(tableTrait, opts);
                }

                if (columnTrait) {
                    const attrs = this.getAttributes();
                    const tableName = (attrs['data-placeholder-table'] || '').toLowerCase();
                    const table = tables.find(function (tbl) { return tbl.name.toLowerCase() === tableName; });
                    const colOpts = table
                        ? table.columns.map(function (col) { return { id: col.name, label: col.name + ' (' + col.type + ')' }; })
                        : [{ id: '', label: table ? 'Keine Felder' : 'Feld wählen', disabled: !table }];
                    setTraitOptions(columnTrait, colOpts);
                }
            },

            updateLabel() {
                const attrs = this.getAttributes();
                const type = attrs['data-placeholder-type'] || 'custom';
                let label;
                if (type === 'database') {
                    const table = attrs['data-placeholder-table'] || 'TABELLE';
                    const column = attrs['data-placeholder-column'] || 'FELD';
                    label = (table + '.' + column).toUpperCase();
                } else {
                    label = (attrs['data-placeholder-key'] || 'PLATZHALTER').toUpperCase();
                }
                const text = '{{' + label + '}}';
                const comps = this.components();
                const onlyText = comps.length === 1 && comps.at(0).is('textnode');
                if (onlyText) {
                    comps.at(0).set('content', text);
                } else {
                    comps.reset([{ type: 'textnode', content: text }]);
                }
            }
        });

        PlaceholderModel.prototype.defaults = placeholderDefaults;

        PlaceholderModel.isComponent = function (el) {
            if (el && el.hasAttribute && el.hasAttribute('data-placeholder-type')) {
                return { type: PLACEHOLDER_COMPONENT };
            }
            return false;
        };

        const PlaceholderView = BaseView.extend({
            render() {
                BaseView.prototype.render.apply(this, arguments);
                this.el.classList.add('placeholder-block');
                this.el.style.display = 'inline-block';
                this.el.style.padding = '2px 8px';
                this.el.style.border = '1px dashed #94a3b8';
                this.el.style.borderRadius = '6px';
                this.el.style.background = '#f1f5f9';
                this.el.style.fontFamily = 'monospace';
                this.el.style.fontSize = '12px';
                return this;
            },
        });

        domc.addType(PLACEHOLDER_COMPONENT, {
            model: PlaceholderModel,
            view: PlaceholderView,
        });
    };

    function setTraitOptions(trait, options) {
        if (!trait) return;
        trait.set('options', options);
        if (trait.view && typeof trait.view.render === 'function') {
            trait.view.render();
        }
    }

    function register(editor) {
        log('EXECUTION', `Starte Placeholder-Registrierung für ${TARGET_CAT_ID}.`, '#DAA520');

        const bm = editor.BlockManager;
        ensurePlaceholderComponent(editor);

        if (!editor.Commands.get('bridge-placeholder:edit')) {
            editor.Commands.add('bridge-placeholder:edit', {
                run(ed, sender, opts = {}) {
                    const component = opts.component || ed.getSelected();
                    if (component && component.is && component.is(PLACEHOLDER_COMPONENT)) {
                        openPlaceholderModal(ed, component);
                    } else {
                        log('PLACEHOLDER INFO', 'Kein Placeholder ausgewählt.', '#888');
                    }
                },
            });
        }

        if (!editor.__bridgePlaceholderEventsBound) {
            editor.__bridgePlaceholderEventsBound = true;

            editor.on('component:dblclick', (cmp) => {
                if (cmp && cmp.is && cmp.is(PLACEHOLDER_COMPONENT)) {
                    openPlaceholderModal(editor, cmp);
                    return false;
                }
                return undefined;
            });

            editor.on('component:add', (cmp) => {
                if (!cmp || !cmp.is || !cmp.is(PLACEHOLDER_COMPONENT)) return;
                if (window.__GJS_IS_PARSING) return;
                if (cmp.__bridgePlaceholderPrompted) return;
                cmp.__bridgePlaceholderPrompted = true;
                setTimeout(() => openPlaceholderModal(editor, cmp), 50);
            });
        }

        addOnce(bm, 'cust-placeholder-custom', {
            id: 'cust-placeholder-custom',
            label: '🔖 Placeholder (Text)',
            content: `<span data-gjs-type="${PLACEHOLDER_COMPONENT}" data-placeholder-type="custom" data-placeholder-key="UEBERSCHRIFT">{{UEBERSCHRIFT}}</span>`
        });

        fetchPlaceholderSchema()
            .then(tables => {
                if (!tables || !tables.length) {
                    log('PLACEHOLDER INFO', 'Keine Tabellen – DB Placeholder Block wird nicht angezeigt.', '#888');
                    return;
                }
                const firstTable = tables[0] || {};
                const tableName = firstTable.name || 'tabelle';
                const columns = Array.isArray(firstTable.columns) ? firstTable.columns : [];
                const firstColumn = columns.length ? columns[0].name : 'feld';
                const placeholderLabel = (tableName + '.' + firstColumn).toUpperCase();
                addOnce(bm, 'cust-placeholder-db', {
                    id: 'cust-placeholder-db',
                    label: '🗄️ Placeholder (DB)',
                    content: `<span data-gjs-type="${PLACEHOLDER_COMPONENT}" data-placeholder-type="database" data-placeholder-table="${tableName}" data-placeholder-column="${firstColumn}">{{${placeholderLabel}}}</span>`
                });
            })
            .catch(() => {
                log('PLACEHOLDER WARN', 'DB Placeholder Block ausgeblendet (Schemafehler).', '#b45309');
            });

        log('SUCCESS', `Placeholder-Registrierung abgeschlossen. ${ALL_PLACEHOLDER_BLOCK_IDS.length} Blöcke erstellt.`, '#008000', 'info', true);
    }

    window.BridgeBlocksPlaceholder = {
        IDS: ALL_PLACEHOLDER_BLOCK_IDS,
        register,
        openModal: openPlaceholderModal
    };

    if (B && B.registerGrapesJSPlugin && typeof register === 'function') {
        B.registerGrapesJSPlugin('bridge-blocks-placeholder', register);
        log('PLUGIN REGISTER', `'bridge-blocks-placeholder' erfolgreich registriert.`, '#008000');
    } else {
        log('CRITICAL ERROR', `BridgeParts oder registerGrapesJSPlugin fehlt! Placeholder Plugin-Registrierung gescheitert.`, 'red', 'error');
    }
})();