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app.js
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app.js
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var BigNumber = require('bignumber.js');
/** Updates the trust address field with the users address. */
function populateUserData () {
if (typeof web3 !== 'undefined') {
var account = web3.eth.defaultAccount;
if (account) {
var icon = document.getElementById('account-icon');
icon.style.backgroundImage = 'url(' + blockies.create({
seed:account,
size: 15,
scale: 3
}).toDataURL()+')'
$('#inputTrustAddress').val(account);
} else {
window.location.assign("sign-in.html");
}
}
}
/** Generates a random kitty for the display canvas */
function randomKitty() {
generateKittyCoinImage(generateRandomCoinImageHex(), 10);
}
/** Randomizes a 5byte hex value for the kitty generation */
function generateRandomCoinImageHex() {
var output_string = "0x00" +
Math.floor(Math.random() * 255).toString(16) +
Math.floor(Math.random() * 255).toString(16) +
Math.floor(Math.random() * 255).toString(16) +
Math.floor(Math.random() * 255).toString(16);
$('#randKittySeed').val(output_string);
return output_string;
}
/**
* Using the random 5 byte hex value, this generates and
* displays the kitty image.
* @param {string} catId - Id of the kitty to display.
* @param {int} size - Scale size of the kitty image.
*/
function generateKittyCoinImage(catId, size) {
size = size || 10;
var data = kittycoinparser(catId);
var canvas = document.getElementById('kitty-canvas');
canvas.width = size * data.length;
canvas.height = size * data[1].length;
var ctx = canvas.getContext('2d');
for (var i = 0; i < data.length; i++) {
for (var j = 0; j < data[i].length; j++) {
var color = data[i][j];
if (color) {
ctx.fillStyle = color;
ctx.fillRect(i * size, j * size, size, size);
}
}
}
return canvas.toDataURL();
}
/** Using the json definitions, load in sample kitties */
function loadKittiesFromJson() {
$.getJSON('../kitties.json', (data) => {
const kittyRow = $('#kitty-row');
const kittyTemplate = $('#kitty-template');
for (var i = 0; i < data.length; i++) {
kittyTemplate.find('.card-title').text(data[i].name);
kittyTemplate.find('.card-img-top').attr('src', data[i].picture);
kittyTemplate.find('.card-text').text(data[i].description);
kittyTemplate.find('.btn-donate').attr('data-id', data[i].id);
kittyRow.append(kittyTemplate.html());
}
});
}
var App = {
contracts: {},
init() {
loadKittiesFromJson();
return App.initWeb3();
},
initWeb3() {
if (typeof web3 !== 'undefined') {
web3 = new Web3(web3.currentProvider);
} else {
// set the provider you want from Web3.providers
web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));
}
return App.initContract();
},
initContract() {
$.getJSON('KittyCoinClub.json', (data) => {
// Get the necessary contract artifact file and instantiate it with truffle-contract
const KittyCoinClubArtifact = data;
App.contracts.KittyCoinClub = TruffleContract(KittyCoinClubArtifact);
// Set the provider for our contract
App.contracts.KittyCoinClub.setProvider(web3.currentProvider);
// Load Account information
App.getAccountDetails();
// User our contract to retrieve the kitties that can be donated to
return App.loadKitties();
});
return App.bindEvents();
},
getAccountDetails() {
let kittyCoinClubInstance;
var account = web3.eth.defaultAccount;
App.contracts.KittyCoinClub.deployed().then((instance) => {
kittyCoinClubInstance = instance;
return kittyCoinClubInstance.pendingWithdrawals(account);
}).then((amount) => {
$('#accountWalletAmount').text(web3.fromWei(amount).toNumber());
}).catch((err) => {
console.log(err.message);
});
},
loadKitties() {
let kittyCoinClubInstance;
App.contracts.KittyCoinClub.deployed().then((instance) => {
kittyCoinClubInstance = instance;
return kittyCoinClubInstance.getKitties.call();
}).then((kitties) => {
for (var i = 0; i < kitties.length; i++) {
App.getKittyDetails(kitties[i]);
}
}).catch((err) => {
console.log(err.message);
});
},
loadDonations() {
let kittyCoinClubInstance;
App.contracts.KittyCoinClub.deployed().then((instance) => {
kittyCoinClubInstance = instance;
return kittyCoinClubInstance.getDonations.call();
}).then((donations) => {
for (var i = 0; i < donations.length; i++) {
App.getDonationDetails(donations[i]);
}
}).catch((err) => {
console.log(err.message);
});
},
getKittyDetails(kittyId) {
let kittyCoinClubInstance;
App.contracts.KittyCoinClub.deployed().then((instance) => {
kittyCoinClubInstance = instance;
return kittyCoinClubInstance.getKitty(kittyId);
}).then((kitty) => {
var kittyJson = {
'kittyId' : kittyId.toNumber(),
'isEnabled' : kitty[0],
'trustAddress' : kitty[1],
'fosterAddress' : kitty[2],
'traitSeed' : kitty[3],
'donationCap' : web3.fromWei(kitty[4]).toNumber()
};
console.log(kittyJson);
}).catch((err) => {
console.log(err.message);
});
},
getDonationDetails(donationId) {
let kittyCoinClubInstance;
App.contracts.KittyCoinClub.deployed().then((instance) => {
kittyCoinClubInstance = instance;
return kittyCoinClubInstance.getDonation(donationId);
}).then((donation) => {
var donationJson = {
'donationId' : donationId.toNumber(),
'kittyId' : donation[0],
'trustAddress' : donation[1],
'fosterAddress' : donation[2],
'trustAmount' : web3.fromWei(donation[3]).toNumber(),
'fosterAmount' : web3.fromWei(donation[4]).toNumber()
};
console.log(donationJson);
}).catch((err) => {
console.log(err.message);
});
},
/** Event Bindings for Form submits */
bindEvents() {
$(document).on('submit', 'form.donate-kitty', App.handleDonation);
$(document).on('submit', 'form.create-kitty', App.handleCreateKitty);
$(document).on('submit', 'form.create-trust', App.handleCreateTrust);
},
handleDonation(event) {
event.preventDefault();
// Get the form fields
var kittyId = parseInt($(event.target.elements).closest('.btn-donate').data('id'));
var donationAmount = parseFloat($(event.target.elements)[0].value);
var donationRatio = parseInt($(event.target.elements)[2].value);
var kittyCoinClubInstance;
web3.eth.getAccounts((error, accounts) => {
if (error) {
console.log(error);
}
var account = accounts[0];
App.contracts.KittyCoinClub.deployed().then((instance) => {
kittyCoinClubInstance = instance;
// Compute the ratio of the donation
var foster = new BigNumber(donationAmount).times(donationRatio).dividedBy(100);
var trust = new BigNumber(donationAmount).minus(foster);
var totalAmount = web3.toWei(donationAmount, 'ether');
var trustAmount = web3.toWei(trust.toNumber(), 'ether');
var fosterAmount = web3.toWei(foster.toNumber(), 'ether');
// Execute donate as a transaction by sending account
return kittyCoinClubInstance.makeDonation(kittyId, trustAmount, fosterAmount, {
from: account,
value: totalAmount,
});
}).then(result => App.loadDonations()).catch((err) => {
console.log(err.message);
});
});
},
handleCreateKitty (event) {
event.preventDefault();
// Get the form fields
var kittyName = $(event.target.elements)[0].value;
var kittySeed = $(event.target.elements)[1].value;
var trustAddress = $(event.target.elements)[2].value;
var fosterAddress = $(event.target.elements)[3].value;
var donationCap = parseFloat($(event.target.elements)[4].value);
var kittyCoinClubInstance;
web3.eth.getAccounts((error, accounts) => {
if (error) {
console.log(error);
}
var account = accounts[0];
App.contracts.KittyCoinClub.deployed().then((instance) => {
kittyCoinClubInstance = instance;
// Execute create kitty function
var donateCap = web3.toWei(donationCap, 'ether');
return kittyCoinClubInstance.createKitty(fosterAddress, kittySeed, donateCap, {
from: account,
});
}).then(result => App.loadKitties()).catch((err) => {
console.log(err.message);
});
});
},
handleCreateTrust (event) {
event.preventDefault();
// Get the form fields
var trustAddress = $(event.target.elements)[0].value;
var kittyCoinClubInstance;
web3.eth.getAccounts((error, accounts) => {
if (error) {
console.log(error);
}
var account = accounts[0];
App.contracts.KittyCoinClub.deployed().then((instance) => {
kittyCoinClubInstance = instance;
// Execute create trust function
return kittyCoinClubInstance.createTrust(trustAddress, {
from: account,
});
}).then().catch((err) => {
console.log(err.message);
});
});
}
};
jQuery(document).ready(
function ($) {
App.init();
populateUserData();
randomKitty();
}
);