verify-mint.ts

/**
 * Verify if a mint transaction actually succeeded
 * Checks NFT balance or Transfer events to confirm mint
 */

import 'dotenv/config'
import { createPublicClient, http } from 'viem'
import { loadConfig, beraChain, ERC721_ABI } from './config.js'
import { privateKeyToAccount } from 'viem/accounts'

const ZERO_ADDRESS = '0x0000000000000000000000000000000000000000'
const TRANSFER_TOPIC = '0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef'

export async function verifyMintSuccess(
  txHash: string,
  walletAddress: string,
  expectedTokenId?: bigint
): Promise<{ success: boolean; mintedTokenId?: bigint; error?: string }> {
  const cfg = loadConfig()
  const client = createPublicClient({
    chain: beraChain,
    transport: http(cfg.rpcs[0], { timeout: 10000 }),
  })

  try {
    // Wait for transaction receipt
    const receipt = await client.waitForTransactionReceipt({ hash: txHash as `0x${string}` })
    
    if (receipt.status !== 'success') {
      return { success: false, error: 'Transaction reverted' }
    }

    const walletLower = walletAddress.toLowerCase()
    const miTeddyLower = cfg.sacrificeAddr.toLowerCase()

    for (const log of receipt.logs) {
      if (log.address.toLowerCase() !== miTeddyLower) {
        continue
      }
      if (!log.topics || log.topics[0]?.toLowerCase() !== TRANSFER_TOPIC) {
        continue
      }
      const fromTopic = log.topics[1]
      const toTopic = log.topics[2]
      const tokenTopic = log.topics[3]
      if (!fromTopic || !toTopic || !tokenTopic) {
        continue
      }
      const fromAddress = `0x${fromTopic.slice(-40)}`.toLowerCase()
      const toAddress = `0x${toTopic.slice(-40)}`.toLowerCase()
      if (fromAddress === ZERO_ADDRESS && toAddress === walletLower) {
        const tokenId = BigInt(tokenTopic)
        return { success: true, mintedTokenId: tokenId }
      }
    }

    return { success: false, error: 'No MiTeddy mint Transfer found in receipt' }
  } catch (error: any) {
    return { success: false, error: error.message || String(error) }
  }
}