import { Controller } from "@hotwired/stimulus"

export default class extends Controller { static values = { url: String }

async pay() { if (!window.ethereum) { alert("⚠️ 请先安装钱包") return }

try {
  // 1️⃣ 请求资源
  const res = await fetch(this.urlValue)
  const payInfo = await res.json()
  
  if (res.status !== 402) {
    alert("✅ 已解锁或无需支付")
    return
  }

  // 2️⃣ 获取支付要求
  const accept = payInfo.accepts[0]
  const { payTo, asset, maxAmountRequired, network, scheme, extra } = accept
  
  console.log("🧾 支付要求:", accept)
  console.log("📦 Extra 信息:", extra)

  // 3️⃣ 连接钱包
  const accounts = await window.ethereum.request({ 
    method: "eth_requestAccounts" 
  })
  const from = accounts[0]

  // 4️⃣ 生成 nonce 和时间戳
  const nonce = this.generateNonce()
  const timestamp = Math.floor(Date.now() / 1000)
  const validAfter = timestamp - 300
  const validBefore = timestamp + 600

  // 5️⃣ 获取 Chain ID
  const chainId = await this.getChainId()
  console.log("🔗 Chain ID:", chainId)

  // 6️⃣ 读取合约信息（调试用）
  await this.debugContractInfo(asset)

  // 7️⃣ 构造 EIP-712 签名数据（尝试多个配置）
  const domainConfigs = [
    // 配置 1: 使用 extra 信息
    {
      name: extra?.name || "USD Coin",
      version: extra?.version?.toString() || "2",
      chainId: chainId,
 ...