Escrow payment

app.js

// Import the page's CSS. Webpack will know what to do with it.
import "../stylesheets/app.css";

// Import libraries we need.
import { default as Web3} from 'web3';
import { default as contract } from 'truffle-contract'

// Import our contract artifacts and turn them into usable abstractions.
import purchase_artifacts from '../../build/contracts/Purchase.json'

// MetaCoin is our usable abstraction, which we'll use through the code below.
var Purchase = contract(purchase_artifacts);

// The following code is simple to show off interacting with your contracts.
// As your needs grow you will likely need to change its form and structure.
// For application bootstrapping, check out window.addEventListener below.
var accounts;
var account;

window.App = {

  start: function() {
    var self = this;
    var deployedContract;
    var valueElement;
    var contractValue;

    Purchase.setProvider(web3.currentProvider);

    // Get the initial account balance so it can be displayed
    web3.eth.getAccounts(function(err, accs) {
      if (err != null) {
        alert ("There was an error fetching your accounts.");
        return;
      }

      if (accs.length == 0) {
        alert("Couldn't get any accounts! Make sure your Ethereum client is configured correctly.");
        return;
      }
      console.log(accs)
      accounts = accs;
      account = accounts[0];

      self.refreshBalance();

    });
  },

  // Refreshes the contract balance
  refreshBalance: function(){
    var self = this;
    var deployedContract;
    var balance;

    Purchase.deployed().then(function(instance) {
      deployedContract = instance;

      balance = document.getElementById("balance");

      web3.eth.getBalance(account, function(err, value){
        if (!err){
          
          console.log(value.toNumber());
          balance.innerHTML = value.toNumber()
        }
      })

    }).catch(function(e) {
      console.log(e);
      // self.setStatus("Error getting balance; see log.");
    });
  },

  // This is the function being called to execute a transaction
  makePayment: function(amount) {
    var self = this;
    var deployedContract;
    var arbiter;

    Purchase.deployed().then(function(instance){
      deployedContract = instance;

      deployedContract.getArbiter().then(function(result){
        console.log(result)
        arbiter = result
      });

      web3.eth.sendTransaction({from: account, to: arbiter, value: web3.toWei(parseInt(amount),"ether")}, function(err, addr){
        if(!err){
          console.log(addr);
        }
      })

    }).then(function(){
      self.refreshBalance();

    }).catch(function(e){
      console.log(e)
    });
  },

};

window.addEventListener('load', function() {
  // Checking if Web3 has been injected by the browser (Mist/MetaMask)
  if (typeof web3 !== 'undefined') {
    console.warn("Using web3 detected from external source. If you find that your accounts don't appear or you have 0 Ether, ensure you've configured that source properly. If using MetaMask, see the following link. Feel free to delete this warning. :) http://truffleframework.com/tutorials/truffle-and-metamask")
    // Use Mist/MetaMask's provider
    window.web3 = new Web3(web3.currentProvider);
  } else {
    console.warn("No web3 detected. Falling back to http://localhost:8545. You should remove this fallback when you deploy live, as it's inherently insecure. Consider switching to Metamask for development. More info here: http://truffleframework.com/tutorials/truffle-and-metamask");
    // fallback - use your fallback strategy (local node / hosted node + in-dapp id mgmt / fail)
    window.web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));
  }

  App.start();
});