/**
 * 批量用户买入模拟脚本
 *
 * 功能:
 * 1. 从 HD 钱包派生多个测试账户
 * 2. 从主账户给测试账户转 WUSD
 * 3. 批量执行 depositYT 买入交易
 *
 * 使用方法:
 * npx tsx scripts/batch-buy-simulation.ts
 */

import {
  createPublicClient,
  createWalletClient,
  http,
  parseUnits,
  formatUnits,
  type Address,
  type Hex
} from 'viem'
import { arbitrumSepolia } from 'viem/chains'
import { privateKeyToAccount, mnemonicToAccount } from 'viem/accounts'

// ============ 配置 ============

// 合约地址
const CONTRACTS = {
  WUSD: '0x6d2bf81a631dFE19B2f348aE92cF6Ef41ca2DF98' as Address,
  FACTORY: '0x982716f32F10BCB5B5944c1473a8992354bF632b' as Address,
  VAULTS: {
    YT_A: '0x0cA35994F033685E7a57ef9bc5d00dd3cf927330' as Address,
    YT_B: '0x333805C9EE75f59Aa2Cc79DfDe2499F920c7b408' as Address,
    YT_C: '0x6DF0ED6f0345F601A206974973dE9fC970598587' as Address,
  }
}

// 模拟配置
const CONFIG = {
  // 主账户私钥 (用于分发 WUSD)
  MAIN_PRIVATE_KEY: '0xa082a7037105ebd606bee80906687e400d89899bbb6ba0273a61528c2f5fab89' as Hex,

  // HD 钱包助记词 (用于生成测试账户)
  // 测试用，请勿在生产环境使用
  TEST_MNEMONIC: 'test test test test test test test test test test test junk',

  // 模拟用户数量
  USER_COUNT: 3,

  // 每个用户的买入金额范围 (WUSD)
  MIN_BUY_AMOUNT: 10,
  MAX_BUY_AMOUNT: 100,

  // 目标金库
  TARGET_VAULT: CONTRACTS.VAULTS.YT_A,

  // 交易间隔 (毫秒)
  TX_INTERVAL: 2000,

  // RPC URL
  RPC_URL: 'https://sepolia-rollup.arbitrum.io/rpc',
}

// ============ ABI ============

const WUSD_ABI = [
  {
    inputs: [{ name: 'to', type: 'address' }, { name: 'amount', type: 'uint256' }],
    name: 'transfer',
    outputs: [{ type: 'bool' }],
    stateMutability: 'nonpayable',
    type: 'function',
  },
  {
    inputs: [{ name: 'spender', type: 'address' }, { name: 'amount', type: 'uint256' }],
    name: 'approve',
    outputs: [{ type: 'bool' }],
    stateMutability: 'nonpayable',
    type: 'function',
  },
  {
    inputs: [{ name: 'account', type: 'address' }],
    name: 'balanceOf',
    outputs: [{ type: 'uint256' }],
    stateMutability: 'view',
    type: 'function',
  },
] as const

const VAULT_ABI = [
  {
    inputs: [{ name: '_wusdAmount', type: 'uint256' }],
    name: 'depositYT',
    outputs: [],
    stateMutability: 'nonpayable',
    type: 'function',
  },
  {
    inputs: [{ name: '_wusdAmount', type: 'uint256' }],
    name: 'previewBuy',
    outputs: [{ type: 'uint256' }],
    stateMutability: 'view',
    type: 'function',
  },
  {
    inputs: [{ name: 'account', type: 'address' }],
    name: 'balanceOf',
    outputs: [{ type: 'uint256' }],
    stateMutability: 'view',
    type: 'function',
  },
  {
    inputs: [],
    name: 'symbol',
    outputs: [{ type: 'string' }],
    stateMutability: 'view',
    type: 'function',
  },
] as const

// ============ 工具函数 ============

function randomAmount(min: number, max: number): bigint {
  const amount = Math.random() * (max - min) + min
  return parseUnits(amount.toFixed(2), 18)
}

function sleep(ms: number): Promise<void> {
  return new Promise(resolve => setTimeout(resolve, ms))
}

// ============ 主逻辑 ============

async function main() {
  console.log('🚀 批量用户买入模拟开始\n')

  // 创建客户端
  const publicClient = createPublicClient({
    chain: arbitrumSepolia,
    transport: http(CONFIG.RPC_URL),
  })

  // 主账户
  const mainAccount = privateKeyToAccount(CONFIG.MAIN_PRIVATE_KEY)
  const mainWalletClient = createWalletClient({
    account: mainAccount,
    chain: arbitrumSepolia,
    transport: http(CONFIG.RPC_URL),
  })

  console.log(`📍 主账户: ${mainAccount.address}`)

  // 检查主账户 WUSD 余额
  const mainBalance = await publicClient.readContract({
    address: CONTRACTS.WUSD,
    abi: WUSD_ABI,
    functionName: 'balanceOf',
    args: [mainAccount.address],
  })
  console.log(`💰 主账户 WUSD 余额: ${formatUnits(mainBalance, 18)}`)

  // 获取金库 symbol
  const vaultSymbol = await publicClient.readContract({
    address: CONFIG.TARGET_VAULT,
    abi: VAULT_ABI,
    functionName: 'symbol',
  })
  console.log(`🏦 目标金库: ${vaultSymbol} (${CONFIG.TARGET_VAULT})`)

  // 生成测试账户
  console.log(`\n👥 生成 ${CONFIG.USER_COUNT} 个测试账户...\n`)

  const testAccounts = []
  for (let i = 0; i < CONFIG.USER_COUNT; i++) {
    const account = mnemonicToAccount(CONFIG.TEST_MNEMONIC, { addressIndex: i })
    const buyAmount = randomAmount(CONFIG.MIN_BUY_AMOUNT, CONFIG.MAX_BUY_AMOUNT)
    testAccounts.push({ account, buyAmount })
    console.log(`  账户 ${i + 1}: ${account.address} | 计划买入: ${formatUnits(buyAmount, 18)} WUSD`)
  }

  // 计算总需要的 WUSD
  const totalNeeded = testAccounts.reduce((sum, a) => sum + a.buyAmount, 0n)
  console.log(`\n📊 总计需要: ${formatUnits(totalNeeded, 18)} WUSD`)

  if (mainBalance < totalNeeded) {
    console.error(`❌ 主账户余额不足! 需要 ${formatUnits(totalNeeded, 18)}, 只有 ${formatUnits(mainBalance, 18)}`)
    return
  }

  // 第一步: 给测试账户转 ETH (gas 费)
  console.log('\n⛽ 步骤 1: 分发 ETH (gas 费) 到测试账户...\n')

  const gasAmount = parseUnits('0.05', 18) // 0.05 ETH 足够多次交易 (Arbitrum Sepolia gas 较高)

  for (let i = 0; i < testAccounts.length; i++) {
    const { account } = testAccounts[i]

    // 检查 ETH 余额
    const ethBalance = await publicClient.getBalance({ address: account.address })

    if (ethBalance >= gasAmount) {
      console.log(`  ✓ 账户 ${i + 1} 已有足够 ETH: ${formatUnits(ethBalance, 18)} ETH`)
      continue
    }

    const transferAmount = gasAmount - ethBalance
    console.log(`  → 转 ETH 给账户 ${i + 1}: ${formatUnits(transferAmount, 18)} ETH...`)

    try {
      const hash = await mainWalletClient.sendTransaction({
        to: account.address,
        value: transferAmount,
      })
      await publicClient.waitForTransactionReceipt({ hash })
      console.log(`    ✓ ETH 转账成功`)
    } catch (error: any) {
      console.error(`    ✗ ETH 转账失败: ${error.message}`)
    }

    await sleep(500)
  }

  // 第二步: 给测试账户转 WUSD
  console.log('\n📤 步骤 2: 分发 WUSD 到测试账户...\n')

  for (let i = 0; i < testAccounts.length; i++) {
    const { account, buyAmount } = testAccounts[i]

    // 检查是否已有足够余额
    const currentBalance = await publicClient.readContract({
      address: CONTRACTS.WUSD,
      abi: WUSD_ABI,
      functionName: 'balanceOf',
      args: [account.address],
    })

    if (currentBalance >= buyAmount) {
      console.log(`  ✓ 账户 ${i + 1} 已有足够余额: ${formatUnits(currentBalance, 18)} WUSD`)
      continue
    }

    const transferAmount = buyAmount - currentBalance
    console.log(`  → 转账给账户 ${i + 1}: ${formatUnits(transferAmount, 18)} WUSD...`)

    try {
      const hash = await mainWalletClient.writeContract({
        address: CONTRACTS.WUSD,
        abi: WUSD_ABI,
        functionName: 'transfer',
        args: [account.address, transferAmount],
      })

      await publicClient.waitForTransactionReceipt({ hash })
      console.log(`    ✓ 转账成功: ${hash}`)
    } catch (error: any) {
      console.error(`    ✗ 转账失败: ${error.message}`)
    }

    await sleep(1000)
  }

  // 第三步: 批量买入
  console.log('\n🛒 步骤 3: 执行批量买入...\n')

  const results: { address: string; amount: string; ytReceived: string; status: string; hash?: string }[] = []

  for (let i = 0; i < testAccounts.length; i++) {
    const { account, buyAmount } = testAccounts[i]

    console.log(`\n[${i + 1}/${testAccounts.length}] 账户: ${account.address}`)
    console.log(`  买入金额: ${formatUnits(buyAmount, 18)} WUSD`)

    const walletClient = createWalletClient({
      account,
      chain: arbitrumSepolia,
      transport: http(CONFIG.RPC_URL),
    })

    try {
      // 预览买入
      const previewYT = await publicClient.readContract({
        address: CONFIG.TARGET_VAULT,
        abi: VAULT_ABI,
        functionName: 'previewBuy',
        args: [buyAmount],
      })
      console.log(`  预计获得: ${formatUnits(previewYT, 18)} ${vaultSymbol}`)

      // 授权
      console.log(`  → 授权 WUSD...`)
      const approveHash = await walletClient.writeContract({
        address: CONTRACTS.WUSD,
        abi: WUSD_ABI,
        functionName: 'approve',
        args: [CONFIG.TARGET_VAULT, buyAmount],
      })
      await publicClient.waitForTransactionReceipt({ hash: approveHash })
      console.log(`    ✓ 授权成功`)

      // 买入
      console.log(`  → 执行买入...`)
      const buyHash = await walletClient.writeContract({
        address: CONFIG.TARGET_VAULT,
        abi: VAULT_ABI,
        functionName: 'depositYT',
        args: [buyAmount],
      })
      await publicClient.waitForTransactionReceipt({ hash: buyHash })

      // 检查 YT 余额
      const ytBalance = await publicClient.readContract({
        address: CONFIG.TARGET_VAULT,
        abi: VAULT_ABI,
        functionName: 'balanceOf',
        args: [account.address],
      })

      console.log(`  ✓ 买入成功! YT 余额: ${formatUnits(ytBalance, 18)} ${vaultSymbol}`)
      console.log(`    交易哈希: ${buyHash}`)

      results.push({
        address: account.address,
        amount: formatUnits(buyAmount, 18),
        ytReceived: formatUnits(ytBalance, 18),
        status: 'success',
        hash: buyHash,
      })

    } catch (error: any) {
      console.error(`  ✗ 买入失败: ${error.message}`)
      results.push({
        address: account.address,
        amount: formatUnits(buyAmount, 18),
        ytReceived: '0',
        status: 'failed',
      })
    }

    // 交易间隔
    if (i < testAccounts.length - 1) {
      console.log(`  ⏳ 等待 ${CONFIG.TX_INTERVAL / 1000} 秒...`)
      await sleep(CONFIG.TX_INTERVAL)
    }
  }

  // 输出汇总
  console.log('\n' + '='.repeat(60))
  console.log('📊 模拟结果汇总')
  console.log('='.repeat(60))

  const successCount = results.filter(r => r.status === 'success').length
  const failCount = results.filter(r => r.status === 'failed').length
  const totalBought = results
    .filter(r => r.status === 'success')
    .reduce((sum, r) => sum + parseFloat(r.amount), 0)
  const totalYT = results
    .filter(r => r.status === 'success')
    .reduce((sum, r) => sum + parseFloat(r.ytReceived), 0)

  console.log(`\n成功: ${successCount} 笔`)
  console.log(`失败: ${failCount} 笔`)
  console.log(`总买入 WUSD: ${totalBought.toFixed(2)}`)
  console.log(`总获得 ${vaultSymbol}: ${totalYT.toFixed(2)}`)

  console.log('\n详细记录:')
  console.table(results.map(r => ({
    地址: r.address.slice(0, 10) + '...',
    买入WUSD: r.amount,
    获得YT: r.ytReceived,
    状态: r.status,
  })))

  console.log('\n✅ 模拟完成!')
}

// 运行
main().catch(console.error)