/**
 * JSON-Editor für die Template-Bearbeitung.
 *
 * Generiert ein Formular aus JSON-Daten und extrahiert
 * die Werte zurück in ein JSON-Objekt.
 */

let editContainerRef = null;
let currentIndent = 2;

/**
 * Öffne Edit-Modal für eine Template-Datei
 * @param {string} path - Pfad zur Template-Datei
 */
function editModalContent(path) {
  window.currentEditTemplate = path;
  const title = path.split('/').pop();
  document.getElementById('edit-title').textContent = `Template bearbeiten: ${title}`;
  window._wasViewModalOpen = document.getElementById('modal').classList.contains('active');

  // Inhalt laden und editierbare Formulare abhängig vom Dateityp erstellen
  fetch(path)
    .then(r => r.text())
    .then(content => {
      const editContainer = document.getElementById('edit-content-content');
      editContainer.innerHTML = '';

      if (path.endsWith('.json')) {
        try {
          const jsonData = JSON.parse(content);
          // Original-Indent erkennen
          const indentMatch = content.match(/^\s{2,8}/m);
          currentIndent = indentMatch ? indentMatch[0].length : 2;
          createJsonEditUI(editContainer, jsonData, path);
        } catch (e) {
          // Falls JSON ungültig, als Text bearbeiten
          createTextEditUI(editContainer, content);
        }
      } else {
        // Markdown als einfaches Textfeld
        createTextEditUI(editContainer, content);
      }

      document.getElementById('edit-modal').classList.add('active');
    })
    .catch(e => showToast(`✗ Fehler beim Laden: ${e.message}`));
}

/**
 * Erstelle ein Textarea für die Bearbeitung
 * @param {HTMLElement} container - Ziel-Container
 * @param {string} content - Dateiinhalt
 */
function createTextEditUI(container, content) {
  const textarea = document.createElement('textarea');
  textarea.id = 'edit-textarea';
  textarea.value = content;
  textarea.style.cssText = 'width: 100%; min-height: 300px; background: var(--bg-input); color: var(--text-primary); border: 1px solid var(--border); border-radius: 4px; padding: 10px; font-family: var(--mono); font-size: 13px;';
  textarea.spellcheck = false;
  container.appendChild(textarea);
}

/**
 * Erstelle ein Formular aus JSON-Daten
 * @param {HTMLElement} container - Ziel-Container
 * @param {Object} jsonData - Zu bearbeitende JSON-Daten
 * @param {string} editPathHint - Pfad-Hinweis
 */
function createJsonEditUI(container, jsonData, editPathHint = '') {
  editContainerRef = container;
  container.innerHTML = '';

  const formDiv = document.createElement('div');
  formDiv.style.cssText = 'display: flex; flex-direction: column; gap: 16px; padding: 8px; background: var(--bg-card); border-radius: 4px; margin: 0; min-height: 300px; overflow-y: auto;';

  // Rekursive Funktion zum Erstellen von Eingabefeldern für alle Properties
  function buildJsonForm(data, prefix = '', level = 0, targetElement = null) {
    if (typeof data !== 'object' || data === null) return;

    const container = targetElement || document.getElementById('edit-content-content');
    if (!container) return;

    Object.keys(data).forEach(key => {
      const fullKey = prefix ? `${prefix}.${key}` : key;
      const value = data[key];
      const isObject = typeof value === 'object' && value !== null && !Array.isArray(value);
      const isArray = Array.isArray(value);

      // Für Objekte: Rekursiv alle inneren Properties anzeigen
      if (isObject) {
        const fieldContainer = document.createElement('div');
        fieldContainer.style.cssText = 'background: #1a1a1a; padding: 12px; border-radius: 4px; border-left: 3px solid #4CAF50;';

        const label = document.createElement('label');
        label.htmlFor = `edit-${fullKey.replace(/[.\s]/g, '-')}`;
        label.textContent = fullKey + ' (Objekt)';
        label.style.cssText = 'font-weight: 600; color: #4CAF50; margin-bottom: 8px; display: block; font-size: 14px;';
        fieldContainer.appendChild(label);

        // Rekursiv innere Properties in den Container einfügen
        const innerContainer = document.createElement('div');
        innerContainer.style.cssText = 'padding-left: 12px; margin-top: 4px;';

        buildJsonForm(value, fullKey, level + 1, innerContainer);

        fieldContainer.appendChild(innerContainer);

        container.appendChild(fieldContainer);
        return;
      }

      // Für Arrays: Rekursiv jedes Element als eigenes Feld anzeigen
      if (isArray) {
        const arrayContainer = document.createElement('div');
        arrayContainer.style.cssText = 'background: #1a1a1a; padding: 12px; border-radius: 4px; border-left: 3px solid #2196F3;';

        const arrayLabel = document.createElement('label');
        arrayLabel.htmlFor = `edit-${fullKey.replace(/[.\s]/g, '-')}`;
        arrayLabel.textContent = fullKey + ' (Array) - ' + value.length + ' Elemente';
        arrayLabel.style.cssText = 'font-weight: 600; color: #2196F3; margin-bottom: 8px; display: block; font-size: 14px;';
        arrayContainer.appendChild(arrayLabel);

        // Für jedes Array-Element ein separates Eingabefeld
        const arrayItemsContainer = document.createElement('div');
        arrayItemsContainer.style.cssText = 'margin-top: 4px; padding-left: 12px;';

        value.forEach((item, index) => {
          const itemKey = `${fullKey}[${index}]`;
          const itemContainer = document.createElement('div');
          itemContainer.style.cssText = 'background: #2a2a2a; padding: 8px; margin: 4px 0; border-radius: 3px; border-left: 2px solid #FF9800;';

          const itemLabel = document.createElement('label');
          itemLabel.htmlFor = `edit-${itemKey.replace(/[.\s]/g, '-')}`;
          itemLabel.textContent = `Element [${index}]`;
          itemLabel.style.cssText = 'font-weight: 500; color: #FF9800; margin-bottom: 4px; display: block; font-size: 13px;';
          itemContainer.appendChild(itemLabel);

          // Prüfen, ob das Array-Element selbst ein Objekt ist
          if (typeof item === 'object' && item !== null) {
            const innerObjContainer = document.createElement('div');
            innerObjContainer.style.cssText = 'padding-left: 12px; margin-top: 4px;';

            buildJsonForm(item, itemKey, level + 1, innerObjContainer);

            itemContainer.appendChild(innerObjContainer);
          } else {
            const itemFieldContainer = document.createElement('div');
            itemFieldContainer.style.cssText = 'background: var(--bg-input); padding: 8px; border-radius: 3px; margin-bottom: 4px;';

            const input = document.createElement('input');
            const type = typeof item === 'boolean' ? 'checkbox' : typeof item === 'number' ? 'number' : 'text';
            input.type = type;
            input.value = item !== null && item !== undefined ? item : '';
            input.dataset.key = itemKey;
            input.dataset.type = typeof item;
            input.dataset.arrayIndex = index;

            if (type === 'checkbox') input.checked = item;
            else input.value = String(item !== null && item !== undefined ? item : '');

            input.style.cssText = 'width: 100%; padding: 8px; background: #222222; color: #ffffff; border: 1px solid #555; border-radius: 3px; font-family: var(--mono); font-size: 13px;';
            itemFieldContainer.appendChild(input);
            itemContainer.appendChild(itemFieldContainer);
          }

          arrayItemsContainer.appendChild(itemContainer);
        });
        arrayContainer.appendChild(arrayItemsContainer);
        container.appendChild(arrayContainer);
        return;
      }

      // Für primitive Werte: Standard-Eingabefeld erstellen
      const fieldContainer = document.createElement('div');
      fieldContainer.style.cssText = 'background: var(--bg-input); padding: 8px; border-radius: 4px; border: 1px solid transparent;';

      const label = document.createElement('label');
      label.htmlFor = `edit-${fullKey.replace(/[.\s]/g, '-')}`;
      label.textContent = fullKey;
      label.style.cssText = 'font-weight: 600; color: var(--text-primary); display: block; margin-bottom: 4px; font-size: 14px; margin-top: 0;';
      fieldContainer.appendChild(label);

      const type = typeof value === 'boolean' ? 'checkbox' : typeof value === 'number' ? 'number' : 'text';
      const input = document.createElement('input');
      input.type = type;
      input.value = value !== null && value !== undefined ? value : '';
      input.dataset.key = fullKey;
      input.dataset.type = typeof value;

      if (type === 'checkbox') input.checked = value;
      else input.value = String(value !== null && value !== undefined ? value : '');

      input.style.cssText = 'width: 100%; padding: 8px; background: #222222; color: #ffffff; border: 1px solid #555; border-radius: 3px; font-family: var(--mono); font-size: 13px;';
      fieldContainer.appendChild(input);
      container.appendChild(fieldContainer);
    });
  }

  buildJsonForm(jsonData, '', 0, formDiv);
  container.appendChild(formDiv);
}

/**
 * Extrahiere den Wert aus einem Input-Element
 * @param {HTMLElement} input - Input-Element
 * @returns {*} Extrahierter Wert
 */
function extractInputValue(input) {
  if (input.type === 'checkbox') {
    return input.checked;
  }

  const value = input.value;

  try {
    // Nur wenn der Input-Typ "text" ist und Wert JSON-ähnlich formatiert
    if (input.type === 'text' && value.length > 0) {
      if ((value.startsWith('{') && value.endsWith('}')) ||
          (value.startsWith('[') && value.endsWith(']'))) {
        try {
          return JSON.parse(value);
        } catch (parseErr) {
          // Kein gültiges JSON, behalte String-Wert
        }
      }
    }
    if (input.dataset.type === 'number') {
      return Number(value);
    }
    return value;
  } catch (e) {
    return value;
  }
}

/**
 * Extrahiere JSON aus dem Formular-Container
 * @param {HTMLElement} formDiv - Formular-Container
 * @returns {Object} Extrahiertes JSON-Objekt
 */
function extractJsonFromForm(formDiv) {
  // Map: full key -> { value, type }
  const inputEntries = [];
  const inputs = formDiv.querySelectorAll('[data-key]');
  inputs.forEach(input => {
    const key = input.dataset.key || '';
    inputEntries.push({ key, value: extractInputValue(input) });
  });

  // Sort by key to ensure stable parent-first construction
  inputEntries.sort((a,b) => a.key.localeCompare(b.key));

  const result = {};
  inputEntries.forEach(({ key, value }) => {
    const parts = key.split('.');
    let cur = result;
    for (let i = 0; i < parts.length; i++) {
      const part = parts[i];
      const isLast = i === parts.length - 1;
      const m = part.match(/^([^\[\]]+)\[(\d+)\]$/);
      if (m && !isLast) {
        const base = m[1];
        const idx = Number(m[2]);
        if (!cur[base]) cur[base] = [];
        if (!cur[base][idx]) cur[base][idx] = {};
        cur = cur[base][idx];
      } else if (m && isLast) {
        // Array leaf
        const base = m[1];
        const idx = Number(m[2]);
        if (!cur[base]) cur[base] = [];
        cur[base][idx] = value;
      } else if (isLast) {
        cur[part] = value;
      } else {
        if (!cur[part]) cur[part] = {};
        cur = cur[part];
      }
    }
  });
  return result;
}

// Export for api.js (global scope, loaded before api.js)
// editModalContent, createTextEditUI, createJsonEditUI, extractInputValue, extractJsonFromForm
// sind als globale Funktionen verfügbar