import type { Event } from 'nostr-tools'
import { decryptArticleContentWithKey, getDecryptionKey, getPrivateContent as getPrivateContentFromPool } from '../nostrPrivateMessages'
import { getCachedEventById } from './cache'

export async function getPrivateContent(params: {
  pool: import('nostr-tools').SimplePool
  eventId: string
  authorPubkey: string
  privateKey: string
  publicKey: string
}): Promise<string | null> {
  return getPrivateContentFromPool({
    pool: params.pool,
    eventId: params.eventId,
    authorPubkey: params.authorPubkey,
    privateKey: params.privateKey,
    publicKey: params.publicKey,
  })
}

export async function getDecryptedArticleContent(params: {
  pool: import('nostr-tools').SimplePool
  eventId: string
  authorPubkey: string
  privateKey: string
  publicKey: string
}): Promise<string | null> {
  try {
    const event = await getEventById(params.eventId)
    if (!event) {
      console.error('[NostrService] Event not found', { eventId: params.eventId, authorPubkey: params.authorPubkey })
      return null
    }
    const decryptionKey = await retrieveDecryptionKey({
      pool: params.pool,
      eventId: params.eventId,
      authorPubkey: params.authorPubkey,
      recipientPrivateKey: params.privateKey,
      recipientPublicKey: params.publicKey,
    })
    if (!decryptionKey) {
      console.warn('[NostrService] Decryption key not found in private messages', { eventId: params.eventId, authorPubkey: params.authorPubkey })
      return null
    }
    return decryptArticleContentWithKey(event.content, decryptionKey)
  } catch (decryptError) {
    console.error('[NostrService] Error decrypting article content', {
      eventId: params.eventId,
      authorPubkey: params.authorPubkey,
      error: decryptError instanceof Error ? decryptError.message : 'Unknown error',
    })
    return null
  }
}

async function retrieveDecryptionKey(params: {
  pool: import('nostr-tools').SimplePool
  eventId: string
  authorPubkey: string
  recipientPrivateKey: string
  recipientPublicKey: string
}): Promise<{ key: string; iv: string } | null> {
  return getDecryptionKey({
    pool: params.pool,
    eventId: params.eventId,
    authorPubkey: params.authorPubkey,
    recipientPrivateKey: params.recipientPrivateKey,
    recipientPublicKey: params.recipientPublicKey,
  })
}

async function getEventById(eventId: string): Promise<Event | null> {
  return getCachedEventById(eventId)
}