var utils = require('./utils');
var bc = require('./blockchain');
var metamgr = require('./metamgr');

async function buyBox(req, rsp)
{
  try {
    let privateKey = metamgr.getServerConf()['private_key'];
    let paymentTokenAddress = metamgr.getContractByName('coin')['address'];

    let tokenId = 1001;
    let boxId = 1001;
    let type = 1001;
    let price = 100;
    let buyerAddress = metamgr.getServerConf()['user_address'];

    let nonce = Math.random()*1000|0;
    let signStr = bc.web3.utils.soliditySha3(type, paymentTokenAddress,  price, nonce);
    const { signature } = await bc.web3.eth.accounts.sign(signStr, privateKey);

    await bc.coinInstance.methods.increaseAllowance(
      metamgr.getContractByName('mall')['address'],
      price).send({ gas: 1000000 });

    let result = await bc.mallInstance.methods.buyBoxWithSignature(
      boxId,
      type,
      buyerAddress,
      price,
      paymentTokenAddress,
      nonce,
      signature).send({gas: 1000000});

    utils.rspData(rsp, {
      'signature' : signature,
      'result': result
    });
  } catch (err) {
    utils.rspErr(rsp, 1, '' + err);
  }
}

async function privateKeyToAccount(req, rsp)
{
  let privateKey = metamgr.getServerConf()['private_key'];
  let account = await bc.web3.eth.accounts.privateKeyToAccount(privateKey);
  utils.rspData(rsp, {
    'account' : account
  });
}


async function getAccounts(req, rsp)
{
  let accounts = await bc.web3.eth.getAccounts();
  utils.rspData(rsp, accounts);
}

async function getBalance(req, rsp)
{
  let balance = await bc.getBalance(metamgr.getServerConf()['user_address']);
  utils.rspData(rsp, {
    'user_address': metamgr.getServerConf()['user_address'],
    'balance': balance
  });
}

async function execCmd(req, rsp)
{
  let cmd = req.query.cmd;
  let handlers = {
    'buyBox': buyBox,
    'getAccounts': getAccounts,
    'getBalance': getBalance,
    'privateKeyToAccount': privateKeyToAccount,
  };
  let handle = handlers[cmd];
  if (handle) {
    handle(req, rsp);
  } else {
    utils.rspErr(rsp, 100, 'not found');
  }
}

exports.execCmd = execCmd;