import { singleton } from "./decorator/singleton.decorator";
import Web3 = require('./lib/web3.min');
import sth = require("./lib/ethSigUtil");
import { ZError } from "./common/ZError";

@singleton
export default class JCWallet {
  web3: Web3 = null
  wallet: any = null
  password: string = '111111'

  constructor() {
    this.web3 = new Web3('https://rpc-testnet.kcc.network')
    this.wallet = this.web3.eth.accounts.wallet.load(this.password)
    if (!this.wallet) {
      this.wallet = this.web3.eth.accounts.wallet;
      let key = '0xa6c4354fb93a55fb67117969a12465209395ec31089fea9e6e061f873b87a473'
      this.wallet.add(key);
      this.web3.eth.accounts.wallet.save(this.password);
    }
  }
  
  
  public saveLocal() {
    
  }

  public loadLocal() {

  }
  
  public saveRemove() {

  }

  public loadRemote() {

  }

  public currentAccount() {
    return this.wallet[0];
  }

  public accounts() {

  }

  public importAccount(privateKey: string) {

  }

  public async getBalance(address?: string) {
    console.log('get balance: ', address);
    if (!address) {
      let accountData = this.wallet[0]
      if (!accountData) {
        throw new ZError(10, 'no account found')
      }
      address = accountData.address
    }
    
    let balance = await this.web3.eth.getBalance(address);
    return balance
  }

  public signTypedData(signObj: any) {
    const account = this.currentAccount()
    return ethSigUtil.signTypedData({
      data: signObj,
      privateKey: Buffer.from(account.privateKey.replace('0x', ''), 'hex'),
      version: 'V4'
    })
  }

  public recoverTypedSignature(signObj: any, signature: string) {
    return ethSigUtil.recoverTypedSignature({
      data: signObj,
      signature,
      version: 'V4'
    })
  }
}