// Shared by both /invite rotate and the weekly cron job (inviteScheduler.js)
// so manual and automatic rotations log identically. maxAge is set to match
// the rotation cadence as defense-in-depth: if the scheduled rotation were
// ever to silently stop running, the invite still expires on its own instead
// of staying live forever.
const guildConfig = require('../model/guildConfig')
const inviteLog = require('../model/inviteLog')
const createLogger = require('../utils/logger')

const log = createLogger('invites')

const ROTATION_MAX_AGE_SECONDS = 7 * 24 * 60 * 60 // 7 days

async function rotate(client, guildId, { triggeredBy, triggeredByTag } = {}) {
  const channelId = await guildConfig.getInviteChannelId(guildId)
  if (!channelId) throw new Error('No invite channel configured — set one with /invite channel first.')

  const channel = await client.channels.fetch(channelId)
  if (!channel || !channel.isTextBased()) throw new Error('Configured invite channel is missing or not text-based.')

  const current = await inviteLog.getCurrent(guildId)
  if (current) {
    try {
      await channel.guild.invites.delete(current.invite_code, 'Invite rotation')
    } catch (err) {
      log.warn('failed to revoke previous invite (may already be gone)', { message: err.message })
    }
    await inviteLog.markRevoked(current.id)
  }

  const invite = await channel.createInvite({ maxAge: ROTATION_MAX_AGE_SECONDS, unique: true, reason: 'Invite rotation' })
  await inviteLog.record({ guildId, channelId, inviteCode: invite.code, triggeredBy, triggeredByTag })
  log.info('invite rotated', { code: invite.code, triggeredBy: triggeredByTag || 'automatic (scheduled)' })
  return invite
}

module.exports = { rotate }