chain-client/public/scripts/main.js

window.wallet = window.wallet = {}
const DEFAULT_CHAIN_DATA = {
  name: 'Matic Testnet RPC',
  type: 'Testnet',
  rpc: 'https://rpc-mumbai.maticvigil.com',
  id: 80001,
  symbol: 'MATIC',
  explorerurl: 'https://mumbai.polygonscan.com/',
}

const loader = document.getElementById('loader')

const WALLET_ADDRESS = ''
function toHexChainId(chainId) {
  return '0x' + chainId.toString(16)
}
// 显示加载动画
function showLoading() {
  // add style display: block
  loader.style.display = 'block'
}
// 隐藏加载动画
function hideLoading() {
  // add style display: none
  loader.style.display = 'none'
}
// 加载json
async function loadJson(url) {
  return fetch(url).then(response => response.json())
}

async function initInstance(user, address, jsonUrl) {
  let json = await loadJson(jsonUrl)
  return new wallet.web3.eth.Contract(json.abi, address, { from: user })
}

async function initWallet() {
  wallet.contract = await initInstance(wallet.account, wallet.walletAddress, '/public/abis/BEMultiSigWallet.json')
}

async function confirmTask() {
  console.log('confirm task')
  let ids = wallet.scheduleList
  showLoading()
  try {
    let gas = await wallet.contract.methods.confirmTransactionBatch(ids).estimateGas()
    gas = gas | 0
    await wallet.contract.methods.confirmTransactionBatch(ids).send({ gas })
  } catch (err) {
    console.log('error confirm task', err)
  }
  hideLoading()
}

async function rejectTask() {
  console.log('reject task')
  let ids = wallet.scheduleList
  showLoading()
  try {
    let gas = await wallet.contract.methods.revokeConfirmationBatch(ids).estimateGas()
    gas = gas | 0
    await wallet.contract.methods.revokeConfirmationBatch(ids).send({ gas })
  } catch (err) {
    console.log('error confirm task', err)
  }
  hideLoading()
}

function makeBatchRequest(calls, callFrom) {
  let batch = new wallet.web3.BatchRequest()
  let promises = calls.map(call => {
    return new Promise((resolve, reject) => {
      let request = call.request({ from: callFrom }, (error, data) => {
        if (error) {
          reject(error)
        } else {
          resolve(data)
        }
      })
      batch.add(request)
    })
  })

  batch.execute()

  return Promise.all(promises)
}
/**
 * 查询定时
 * @param {bytes32} id beginSchedule返回的id
 * @returns
 */
async function querySchedule(id) {
  let instance = wallet.contract
  return makeBatchRequest([
    instance.methods.isOperation(id).call,
    instance.methods.isOperationPending(id).call,
    instance.methods.isOperationReady(id).call,
    instance.methods.isOperationDone(id).call,
    instance.methods.isConfirmed(id).call,
    instance.methods.getTimestamp(id).call,
  ])
}

function initUIEvent() {
  var btnConfirm = document.getElementById('btn-confirm')
  btnConfirm.addEventListener('click', confirmTask, false)
  var btnReject = document.getElementById('btn-reject')
  btnReject.addEventListener('click', rejectTask, false)
}

async function connectMetaMask() {
  let provider = null
  if (typeof window.ethereum !== 'undefined') {
    provider = window.ethereum
    try {
      await provider.request({ method: 'eth_requestAccounts' })
    } catch (error) {
      if (error.code === -32002) {
        throw new Error('MeatMask not login, Open MeatMask and login first')
      } else {
        throw new Error('User Rejected')
      }
    }
  } else if (window.web3) {
    provider = window.web3.currentProvider
  } else if (window.celo) {
    provider = window.celo
  } else {
    throw new Error('No Web3 Provider found')
  }
  return provider
}

async function confirmNeededChain() {
  const chainId = wallet.chainId
  if (chainId !== DEFAULT_CHAIN_DATA.id) {
    await switchEthereumChain()
  }
}

async function switchEthereumChain() {
  let data = DEFAULT_CHAIN_DATA
  let hexChainId = toHexChainId(data.id)
  try {
    await wallet.provider.request({
      method: 'wallet_addEthereumChain',
      params: [
        {
          chainId: hexChainId,
          chainName: data.name,
          nativeCurrency: {
            name: data.symbol,
            symbol: data.symbol,
            decimals: data.decimals || 18,
          },
          blockExplorerUrls: [data.explorerurl],
          rpcUrls: [data.rpc],
        },
      ],
    })
    console.log('add chain success')
  } catch (addError) {
    console.error('add chain error: ', addError)
  }
  // try {
  //   await wallet.provider.request({
  //     method: 'wallet_switchEthereumChain',
  //     params: [{ chainId: hexChainId }],
  //   })
  //   console.log('switch chain success')
  // } catch (e) {
  //   console.log('switch chain error: ', e)
  //   if (e.code === 4902 || e.message.indexOf('Unrecognized chain ID') >= 0) {
  //     try {
  //       await wallet.provider.request({
  //         method: 'wallet_addEthereumChain',
  //         params: [
  //           {
  //             chainId: hexChainId,
  //             chainName: data.name,
  //             nativeCurrency: {
  //               name: data.symbol,
  //               symbol: data.symbol,
  //               decimals: data.decimals || 18,
  //             },
  //             blockExplorerUrls: [data.explorerurl],
  //             rpcUrls: [data.rpc],
  //           },
  //         ],
  //       })
  //       console.log('add chain success')
  //     } catch (addError) {
  //       console.error('add chain error: ', addError)
  //     }
  //   }
  // }
}

function subscribeToEvents(provider) {
  provider.on('accountsChanged', async accounts => {
    if (accounts && accounts.length > 0) {
      if (wallet.account !== accounts[0]) {
        console.log('account change', wallet.account, accounts[0])
        wallet.account = accounts
      }
    }
  })

  // Subscribe to chainId change
  provider.on('chainChanged', async chainId => {
    const chainIdNum = parseInt(chainId)
    console.log('chainChanged', chainId, chainIdNum)
    if (wallet.chainId !== chainIdNum) {
      wallet.chainId = chainIdNum
      await confirmNeededChain()
    }
  })

  // Subscribe to session disconnection
  provider.on('disconnect', err => {
    console.log('disconnect', err)
  })
}

function loadTaskData() {
  wallet.walletAddress = document.getElementById('wallet-address').value
  let nodes = document.getElementsByClassName('scheduleId')
  wallet.scheduleList = []
  for (let node of nodes) {
    wallet.scheduleList.push(node.value)
  }
  console.log(wallet.scheduleList)
}

;(async function () {
  loadTaskData()
  initUIEvent()

  let self = window.wallet
  self.provider = await connectMetaMask()
  self.web3 = new Web3(self.provider)
  let accounts = await self.web3.eth.getAccounts()
  if (accounts.length > 0) {
    self.account = accounts[0]
  }
  self.chainId = await self.web3.eth.getChainId()
  console.log('chainId: ', self.chainId, 'account: ', self.account)
  await confirmNeededChain()
  subscribeToEvents(self.provider)
  await initWallet()
  setTimeout(async () => {
    let result = await querySchedule('0xa5c35368cd44dbe805a4595d6813ed3afefa1bf667209dc8d63f99cdec117f58')
    console.log(result)
  }, 5000)
})()