import { db } from '../config/firebase'
import { RevenueCatEvent } from '../types'

const PREMIUM_ACTIVE_TYPES = new Set([
  'INITIAL_PURCHASE',
  'RENEWAL',
  'PRODUCT_CHANGE',
  'TRANSFER',
  'UNCANCELLATION',
])

const PREMIUM_REVOKED_TYPES = new Set([
  'EXPIRATION',
  'CANCELLATION',
  'SUBSCRIBER_ALIAS',
])

export async function syncEntitlement(event: RevenueCatEvent): Promise<void> {
  const { type, app_user_id: uid } = event.event

  if (PREMIUM_ACTIVE_TYPES.has(type)) {
    await db().collection('users').doc(uid).update({ hasPremium: true })
    console.log(`[entitlement] hasPremium=true for ${uid} (${type})`)
    return
  }

  if (PREMIUM_REVOKED_TYPES.has(type)) {
    await db().collection('users').doc(uid).update({ hasPremium: false })
    console.log(`[entitlement] hasPremium=false for ${uid} (${type})`)
    return
  }

  console.log(`[entitlement] ignored event type: ${type}`)
}