story-research-zapwall/lib/paymentNotes.ts

import { nostrService } from './nostr'
import { buildTags } from './nostrTagSystem'
import { PLATFORM_SERVICE } from './platformConfig'
import { generatePurchaseHashId, generateReviewTipHashId, generateSponsoringHashId } from './hashIdGenerator'
import { buildObjectId } from './urlGenerator'
import type { Event, EventTemplate } from 'nostr-tools'

/**
 * Publish an explicit payment note (kind 1) for a purchase
 * This note is published in addition to the zap receipt (kind 9735)
 */
export async function publishPurchaseNote(params: {
  articleId: string
  authorPubkey: string
  payerPubkey: string
  amount: number
  paymentHash: string
  zapReceiptId?: string
  category?: 'science-fiction' | 'scientific-research'
  seriesId?: string
  payerPrivateKey: string
}): Promise<Event | null> {
  const category = params.category === 'science-fiction' ? 'sciencefiction' : params.category === 'scientific-research' ? 'research' : 'sciencefiction'

  const purchaseData = {
    payerPubkey: params.payerPubkey,
    articleId: params.articleId,
    authorPubkey: params.authorPubkey,
    amount: params.amount,
    paymentHash: params.paymentHash,
  }

  const hashId = await generatePurchaseHashId(purchaseData)
  const id = buildObjectId(hashId, 0, 0)

  const tags = buildTags({
    type: 'payment',
    category,
    id: hashId,
    service: PLATFORM_SERVICE,
    version: 0,
    hidden: false,
    payment: true,
    paymentType: 'purchase',
    amount: params.amount,
    payerPubkey: params.payerPubkey,
    recipientPubkey: params.authorPubkey,
    paymentHash: params.paymentHash,
    zapReceiptId: params.zapReceiptId,
    articleId: params.articleId,
    ...(params.seriesId ? { seriesId: params.seriesId } : {}),
  })

  // Build JSON metadata
  const paymentJson = JSON.stringify({
    type: 'purchase',
    id,
    hash: hashId,
    version: 0,
    index: 0,
    ...purchaseData,
  })

  tags.push(['json', paymentJson])

  const eventTemplate: EventTemplate = {
    kind: 1,
    created_at: Math.floor(Date.now() / 1000),
    tags,
    content: `Purchase confirmed: ${params.amount} sats for article ${params.articleId}`,
  }

  nostrService.setPrivateKey(params.payerPrivateKey)
  return await nostrService.publishEvent(eventTemplate)
}

/**
 * Publish an explicit payment note (kind 1) for a review tip
 * This note is published in addition to the zap receipt (kind 9735)
 */
export async function publishReviewTipNote(params: {
  articleId: string
  reviewId: string
  authorPubkey: string
  reviewerPubkey: string
  payerPubkey: string
  amount: number
  paymentHash: string
  zapReceiptId?: string
  category?: 'science-fiction' | 'scientific-research'
  seriesId?: string
  text?: string
  payerPrivateKey: string
}): Promise<Event | null> {
  const category = params.category === 'science-fiction' ? 'sciencefiction' : params.category === 'scientific-research' ? 'research' : 'sciencefiction'

  const tipData = {
    payerPubkey: params.payerPubkey,
    articleId: params.articleId,
    reviewId: params.reviewId,
    reviewerPubkey: params.reviewerPubkey,
    authorPubkey: params.authorPubkey,
    amount: params.amount,
    paymentHash: params.paymentHash,
  }

  const hashId = await generateReviewTipHashId(tipData)
  const id = buildObjectId(hashId, 0, 0)

  const tags = buildTags({
    type: 'payment',
    category,
    id: hashId,
    service: PLATFORM_SERVICE,
    version: 0,
    hidden: false,
    payment: true,
    paymentType: 'review_tip',
    amount: params.amount,
    payerPubkey: params.payerPubkey,
    recipientPubkey: params.reviewerPubkey,
    paymentHash: params.paymentHash,
    zapReceiptId: params.zapReceiptId,
    articleId: params.articleId,
    reviewId: params.reviewId,
    ...(params.seriesId ? { seriesId: params.seriesId } : {}),
    ...(params.text ? { text: params.text } : {}),
  })

  // Build JSON metadata
  const paymentJson = JSON.stringify({
    type: 'review_tip',
    id,
    hash: hashId,
    version: 0,
    index: 0,
    ...tipData,
    ...(params.text ? { text: params.text } : {}),
  })

  tags.push(['json', paymentJson])

  const content = params.text
    ? `Review tip confirmed: ${params.amount} sats for review ${params.reviewId}\n\n${params.text}`
    : `Review tip confirmed: ${params.amount} sats for review ${params.reviewId}`

  const eventTemplate: EventTemplate = {
    kind: 1,
    created_at: Math.floor(Date.now() / 1000),
    tags,
    content,
  }

  nostrService.setPrivateKey(params.payerPrivateKey)
  return await nostrService.publishEvent(eventTemplate)
}

/**
 * Publish an explicit payment note (kind 1) for a sponsoring
 * This note is published in addition to the zap receipt (kind 9735) if applicable
 */
export async function publishSponsoringNote(params: {
  authorPubkey: string
  payerPubkey: string
  amount: number
  paymentHash: string
  category?: 'science-fiction' | 'scientific-research'
  seriesId?: string
  articleId?: string
  text?: string
  transactionId?: string // Bitcoin transaction ID for mainnet payments
  payerPrivateKey: string
}): Promise<Event | null> {
  const category = params.category === 'science-fiction' ? 'sciencefiction' : params.category === 'scientific-research' ? 'research' : 'sciencefiction'

  const sponsoringData = {
    payerPubkey: params.payerPubkey,
    authorPubkey: params.authorPubkey,
    amount: params.amount,
    paymentHash: params.paymentHash,
    ...(params.seriesId ? { seriesId: params.seriesId } : {}),
    ...(params.articleId ? { articleId: params.articleId } : {}),
  }

  const hashId = await generateSponsoringHashId(sponsoringData)
  const id = buildObjectId(hashId, 0, 0)

  const tags = buildTags({
    type: 'payment',
    category,
    id: hashId,
    service: PLATFORM_SERVICE,
    version: 0,
    hidden: false,
    payment: true,
    paymentType: 'sponsoring',
    amount: params.amount,
    payerPubkey: params.payerPubkey,
    recipientPubkey: params.authorPubkey,
    paymentHash: params.paymentHash,
    ...(params.seriesId ? { seriesId: params.seriesId } : {}),
    ...(params.articleId ? { articleId: params.articleId } : {}),
    ...(params.text ? { text: params.text } : {}),
  })

  // Add transaction ID if provided (for Bitcoin mainnet payments)
  if (params.transactionId) {
    tags.push(['transaction_id', params.transactionId])
  }

  // Build JSON metadata
  const paymentJson = JSON.stringify({
    type: 'sponsoring',
    id,
    hash: hashId,
    version: 0,
    index: 0,
    ...sponsoringData,
    ...(params.text ? { text: params.text } : {}),
    ...(params.transactionId ? { transactionId: params.transactionId } : {}),
  })

  tags.push(['json', paymentJson])

  const content = params.text
    ? `Sponsoring confirmed: ${params.amount} sats for author ${params.authorPubkey.substring(0, 16)}...\n\n${params.text}`
    : `Sponsoring confirmed: ${params.amount} sats for author ${params.authorPubkey.substring(0, 16)}...`

  const eventTemplate: EventTemplate = {
    kind: 1,
    created_at: Math.floor(Date.now() / 1000),
    tags,
    content,
  }

  nostrService.setPrivateKey(params.payerPrivateKey)
  return await nostrService.publishEvent(eventTemplate)
}