/**
 * POST /api/debug/history/fetch
 * Request message history on-demand
 */
import { baileysManager } from '../../../services/baileys/manager'

export default defineEventHandler(async (event) => {
  const username = getHeader(event, 'x-authentik-username')
  if (!username) {
    throw createError({ statusCode: 401, message: 'Unauthorized' })
  }

  const body = await readBody(event)
  const { instanceId, count, oldestMsgKey, oldestMsgTimestamp } = body

  if (!instanceId) {
    throw createError({ statusCode: 400, message: 'instanceId is required' })
  }

  if (!count || typeof count !== 'number') {
    throw createError({ statusCode: 400, message: 'count (number) is required' })
  }

  const socket = baileysManager.getSocket(instanceId)
  if (!socket) {
    throw createError({ statusCode: 400, message: 'Instance not connected' })
  }

  // Verificar que el método existe
  if (typeof socket.fetchMessageHistory !== 'function') {
    console.error('[History] fetchMessageHistory method not available on socket')
    console.error('[History] Available methods:', Object.keys(socket).filter(k => typeof (socket as any)[k] === 'function').join(', '))
    throw createError({ statusCode: 500, message: 'fetchMessageHistory not available on this Baileys version' })
  }

  // Log de parámetros
  console.log('[History] Requesting history with params:', {
    instanceId,
    count,
    oldestMsgKey: oldestMsgKey ? JSON.stringify(oldestMsgKey) : 'undefined',
    oldestMsgTimestamp: oldestMsgTimestamp || 'undefined'
  })

  try {
    const result = await socket.fetchMessageHistory(count, oldestMsgKey, oldestMsgTimestamp)
    console.log('[History] fetchMessageHistory returned:', result)
    return {
      success: true,
      result,
      message: `Requested ${count} messages from history. Check messaging-history.set event for results.`
    }
  } catch (error) {
    console.error('[History] fetchMessageHistory error:', error)
    throw createError({
      statusCode: 500,
      message: `Failed to fetch message history: ${(error as Error).message}`
    })
  }
})