import 'server-only'
import { asAdmin } from '@/lib/db/with-user'
import { notificationsLog } from '@/lib/db/schema'

export interface InAppNotification {
  userId: string
  title: string
  link?: string
  incidentId?: string
  capaId?: string
}

export async function createInAppNotifications(
  notifications: InAppNotification[],
): Promise<{ created: number }> {
  const seen = new Set<string>()
  let created = 0

  for (const n of notifications) {
    if (!n.userId || !n.title) continue
    const key = `${n.userId}|${n.title}|${n.incidentId ?? ''}|${n.capaId ?? ''}`
    if (seen.has(key)) continue
    seen.add(key)

    try {
      await asAdmin(db =>
        db.insert(notificationsLog).values({
          channel: 'in_app',
          recipient: n.userId,
          recipientUserId: n.userId,
          title: n.title,
          link: n.link ?? null,
          incidentId: n.incidentId ?? null,
          capaId: n.capaId ?? null,
        })
      )
      created++
    } catch (e) {
      console.error('in-app notification error:', e)
    }
  }

  return { created }
}