const STATUS_FALLBACKS = {
  temp_accept: ['temp_accept', 'accept', 'pending'],
}

/**
 * Save post; fall back to older status enum values if server schema is outdated.
 */
async function savePostWithModerationStatus(Model, payload) {
  const preferredStatus = payload.status || 'pending'
  const candidates = STATUS_FALLBACKS[preferredStatus] ?? [preferredStatus]

  let lastError = null
  for (let i = 0; i < candidates.length; i += 1) {
    const status = candidates[i]
    const doc = new Model({ ...payload, status })
    try {
      await doc.save()
      return doc
    } catch (err) {
      lastError = err
      const isLast = i === candidates.length - 1
      if (err?.name === 'ValidationError' && !isLast) {
        continue
      }
      throw err
    }
  }

  throw lastError ?? new Error('Failed to save post')
}

module.exports = {
  savePostWithModerationStatus,
}