import type { Article } from '@/types/nostr'
import type { AlbyInvoice } from '@/types/alby'

/**
 * Resolve invoice for article payment
 * Uses invoice from event tags only
 */
export async function resolveArticleInvoice(article: Article): Promise<AlbyInvoice> {
  if (!article.invoice || !article.paymentHash) {
    throw new Error('Article does not have an invoice. The author must create an invoice when publishing the article.')
  }

  // Parse invoice from event tags
  // Note: We don't have expiresAt from tags, so we'll assume it's valid
  // In production, you'd decode BOLT11 to get expiry
  const invoice: AlbyInvoice = {
    invoice: article.invoice,
    paymentHash: article.paymentHash,
    amount: article.zapAmount,
    expiresAt: Math.floor(Date.now() / 1000) + 86400, // Assume 24h validity
  }

  return invoice
}