import {AllChains} from './allchain'

export class BlockChain{

  constructor() {
    this.rpc= {}
    for (const d of AllChains) {
      const id = d.id
      this.rpc[id] = d.rpc
    }
  }

  async connectWallet() {
    this.provider = await this.connectWalletConnect()
    if (!this.provider) {
      return
    }
    this.web3 = new Web3(this.provider)
    const chainId = await this.web3.eth.getChainId()
    this.subscribeToEvents()
  }

  async connectWalletConnect() {
    const provider = new WalletConnectProvider.default({
      infuraId: 'e7743d46923911fa8850619b7a7f6d9d',
      rpc: this.rpc
    })
    try {
      await provider.enable()
    } catch (err) {
      console.log('connect to wallet connect error: ', err)
      await Promise.reject(err)
    }

    return provider
  }

  subscribeToEvents = () => {
    // Subscribe to accounts change
    this.provider.on('accountsChanged', async(accounts) => {
      console.log('accountsChanged: ', accounts)
      if (accounts && accounts.length > 0) {
        this.accountId = accounts[0]
      }
    })

    this.provider.on('wc_uri_change', async(uri) => {
      console.log('wc_uri_change: ', uri)
      jsb.reflection.callStaticMethod(
        'org/cocos2dx/javascript/AppActivity',
        'connectwallet',
        '(Ljava/lang/String;)V',
        uri
      )
    })


    // Subscribe to chainId change
    this.provider.on('chainChanged', async(chainId) => {
      console.log('chainChanged', chainId)
      const chainIdNum = parseInt(chainId)
      this.chainId = chainIdNum
      // this.saveProvider()
    })

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