export function normalizeLayoutForEditor(layout) {
  if (!layout?.widgets) return layout
  return {
    ...layout,
    widgets: layout.widgets.map((w) => ({
      ...w,
      config: w.config && typeof w.config === 'object' ? { ...w.config } : {},
    })),
  }
}

export function moveWidget(layout, index, delta) {
  const next = [...layout.widgets]
  const j = index + delta
  if (j < 0 || j >= next.length) return layout
  const t = next[index]
  next[index] = next[j]
  next[j] = t
  return { ...layout, widgets: next }
}

export function toggleWidget(layout, index) {
  const next = layout.widgets.map((w, i) => (i === index ? { ...w, enabled: !w.enabled } : w))
  const anyOn = next.some((w) => w.enabled)
  if (!anyOn) return layout
  return { ...layout, widgets: next }
}

/**
 * Verschiebt eine Zeile von fromIndex nach dropIndex (Indizes im vollen layout.widgets).
 * Semantik wie üblich: Element landet an Position dropIndex (nach Entfernen an der alten Stelle).
 */
export function moveWidgetToIndex(layout, fromIndex, dropIndex) {
  if (!layout?.widgets?.length) return layout
  if (fromIndex < 0 || fromIndex >= layout.widgets.length) return layout
  if (dropIndex < 0 || dropIndex > layout.widgets.length) return layout
  if (fromIndex === dropIndex) return layout
  const next = [...layout.widgets]
  next.splice(dropIndex, 0, next.splice(fromIndex, 1)[0])
  return { ...layout, widgets: next }
}