story-research-zapwall/lib/reviewReward.ts

import { getAlbyService } from './alby'
import { calculateReviewSplit, PLATFORM_COMMISSIONS } from './platformCommissions'
import { automaticTransferService } from './automaticTransfer'
import { platformTracking } from './platformTracking'
import { nostrService } from './nostr'
import type { AlbyInvoice } from '@/types/alby'

/**
 * Review reward service
 * Handles Lightning payments for rewarding reviews with automatic commission split
 * 
 * Review reward: 70 sats total
 * - Reviewer: 49 sats
 * - Platform: 21 sats
 */
export interface ReviewRewardRequest {
  reviewId: string
  articleId: string
  reviewerPubkey: string
  reviewerLightningAddress?: string
  authorPubkey: string
  authorPrivateKey: string
}

export interface ReviewRewardResult {
  success: boolean
  invoice?: AlbyInvoice
  paymentHash?: string
  error?: string
  split: {
    reviewer: number
    platform: number
    total: number
  }
}

export class ReviewRewardService {
  /**
   * Create review reward payment with commission split
   */
  async createReviewRewardPayment(request: ReviewRewardRequest): Promise<ReviewRewardResult> {
    try {
      const split = calculateReviewSplit()

      // Verify author has permission to reward this review
      // (should be verified before calling this function)

      const alby = getAlbyService()
      await alby.enable()

      const invoice = await alby.createInvoice({
        amount: split.total,
        description: `Review reward: ${request.reviewId} (${split.reviewer} sats to reviewer, ${split.platform} sats commission)`,
        expiry: 3600, // 1 hour
      })

      console.log('Review reward invoice created', {
        reviewId: request.reviewId,
        articleId: request.articleId,
        reviewerPubkey: request.reviewerPubkey,
        amount: split.total,
        reviewerPortion: split.reviewer,
        platformCommission: split.platform,
        timestamp: new Date().toISOString(),
      })

      return {
        success: true,
        invoice,
        paymentHash: invoice.paymentHash,
        split,
      }
    } catch (error) {
      const errorMessage = error instanceof Error ? error.message : 'Unknown error'
      console.error('Error creating review reward payment', {
        reviewId: request.reviewId,
        articleId: request.articleId,
        error: errorMessage,
        timestamp: new Date().toISOString(),
      })
      return {
        success: false,
        error: errorMessage,
        split: calculateReviewSplit(),
      }
    }
  }

  /**
   * Process review reward payment after confirmation
   * Transfers reviewer portion and tracks commission
   */
  async processReviewRewardPayment(
    request: ReviewRewardRequest,
    paymentHash: string
  ): Promise<boolean> {
    try {
      const split = calculateReviewSplit()

      // Verify payment was made
      // (should be verified via zap receipt before calling this)

      // Transfer reviewer portion
      if (request.reviewerLightningAddress) {
        const transferResult = await automaticTransferService.transferReviewerPortion(
          request.reviewerLightningAddress,
          request.reviewId,
          request.reviewerPubkey,
          split.total
        )

        if (!transferResult.success) {
          console.error('Failed to transfer reviewer portion', {
            reviewId: request.reviewId,
            error: transferResult.error,
            timestamp: new Date().toISOString(),
          })
          // Continue anyway - transfer can be done manually later
        }
      }

      // Track the reward payment
      await this.trackReviewReward(request, split, paymentHash)

      // Update review event with reward tag
      await this.updateReviewWithReward(request.reviewId, request.authorPrivateKey)

      console.log('Review reward processed', {
        reviewId: request.reviewId,
        articleId: request.articleId,
        reviewerPubkey: request.reviewerPubkey,
        reviewerAmount: split.reviewer,
        platformCommission: split.platform,
        timestamp: new Date().toISOString(),
      })

      return true
    } catch (error) {
      console.error('Error processing review reward payment', {
        reviewId: request.reviewId,
        error: error instanceof Error ? error.message : 'Unknown error',
        timestamp: new Date().toISOString(),
      })
      return false
    }
  }

  /**
   * Track review reward payment
   */
  private async trackReviewReward(
    request: ReviewRewardRequest,
    split: { reviewer: number; platform: number; total: number },
    paymentHash: string
  ): Promise<void> {
    try {
      // In production, publish tracking event on Nostr similar to article payments
      console.log('Review reward tracked', {
        reviewId: request.reviewId,
        articleId: request.articleId,
        reviewerPubkey: request.reviewerPubkey,
        authorPubkey: request.authorPubkey,
        reviewerAmount: split.reviewer,
        platformCommission: split.platform,
        paymentHash,
        timestamp: new Date().toISOString(),
      })
    } catch (error) {
      console.error('Error tracking review reward', {
        reviewId: request.reviewId,
        error: error instanceof Error ? error.message : 'Unknown error',
        timestamp: new Date().toISOString(),
      })
    }
  }

  /**
   * Update review event with reward tag
   */
  private async updateReviewWithReward(reviewId: string, authorPrivateKey: string): Promise<void> {
    try {
      // In production, this would:
      // 1. Fetch the review event
      // 2. Add tags: ['rewarded', 'true'], ['reward_amount', '70']
      // 3. Publish updated event
      
      console.log('Review updated with reward tag', {
        reviewId,
        timestamp: new Date().toISOString(),
      })
    } catch (error) {
      console.error('Error updating review with reward', {
        reviewId,
        error: error instanceof Error ? error.message : 'Unknown error',
        timestamp: new Date().toISOString(),
      })
    }
  }
}

export const reviewRewardService = new ReviewRewardService()