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contract_interaction.js
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contract_interaction.js
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/**
* Created by milenradkov on 8.03.18.
*/
$(document).ready(function() {
let peerToPeerLendingContract = '0x8f0483125fcb9aaaefa9209d8e9d7b9c8b9fb90f';
let peerToPeerLendingContractABI = [ { "constant": true, "inputs": [ { "name": "", "type": "uint256" } ], "name": "credits", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "getCredits", "outputs": [ { "name": "", "type": "address[]" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [], "name": "destroy", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [], "name": "owner", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "requestedAmount", "type": "uint256" }, { "name": "repaymentsCount", "type": "uint256" }, { "name": "creditDescription", "type": "bytes32" } ], "name": "applyForCredit", "outputs": [ { "name": "_credit", "type": "address" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [ { "name": "", "type": "address" } ], "name": "users", "outputs": [ { "name": "credited", "type": "bool" }, { "name": "activeCredit", "type": "address" }, { "name": "fraudStatus", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "_borrower", "type": "address" } ], "name": "setFraudStatus", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "name": "_recipient", "type": "address" } ], "name": "destroyAndSend", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "inputs": [], "payable": false, "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_address", "type": "address" }, { "indexed": true, "name": "_borrower", "type": "address" }, { "indexed": true, "name": "timestamp", "type": "uint256" } ], "name": "LogCreditCreated", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_currentOwner", "type": "address" }, { "indexed": true, "name": "_newOwner", "type": "address" } ], "name": "LogOwnershipTransfered", "type": "event" } ];
let creditContractABI = [ { "constant": true, "inputs": [], "name": "getBalance", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "name": "", "type": "address" } ], "name": "lenders", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [], "name": "toggleActive", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [], "name": "withdraw", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [], "name": "repay", "outputs": [], "payable": true, "stateMutability": "payable", "type": "function" }, { "constant": false, "inputs": [], "name": "revokeVote", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [], "name": "refund", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [], "name": "destroy", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [], "name": "owner", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "_state", "type": "uint8" } ], "name": "changeStage", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [], "name": "fraudVote", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [], "name": "invest", "outputs": [], "payable": true, "stateMutability": "payable", "type": "function" }, { "constant": false, "inputs": [], "name": "requestInterest", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [], "name": "getCreditInfo", "outputs": [ { "name": "", "type": "address" }, { "name": "", "type": "bytes32" }, { "name": "", "type": "uint256" }, { "name": "", "type": "uint256" }, { "name": "", "type": "uint256" }, { "name": "", "type": "uint256" }, { "name": "", "type": "uint256" }, { "name": "", "type": "uint256" }, { "name": "", "type": "uint8" }, { "name": "", "type": "bool" }, { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "_recipient", "type": "address" } ], "name": "destroyAndSend", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "name": "_requestedAmount", "type": "uint256" }, { "name": "_requestedRepayments", "type": "uint256" }, { "name": "_description", "type": "bytes32" } ], "payable": false, "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_address", "type": "address" }, { "indexed": true, "name": "timestamp", "type": "uint256" } ], "name": "LogCreditInitialized", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "timestamp", "type": "uint256" } ], "name": "LogCreditRevoked", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_address", "type": "address" }, { "indexed": true, "name": "_amount", "type": "uint256" }, { "indexed": true, "name": "timestamp", "type": "uint256" } ], "name": "LogBorrowerWithdrawal", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_address", "type": "address" }, { "indexed": true, "name": "_amount", "type": "uint256" }, { "indexed": true, "name": "timestamp", "type": "uint256" } ], "name": "LogBorrowerRepaymentInstallment", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_address", "type": "address" }, { "indexed": true, "name": "_amount", "type": "uint256" }, { "indexed": true, "name": "timestamp", "type": "uint256" } ], "name": "LogBorrowerRepaymentFinished", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_address", "type": "address" }, { "indexed": true, "name": "_amount", "type": "uint256" }, { "indexed": true, "name": "timestamp", "type": "uint256" } ], "name": "LogBorrowerChangeReturned", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_address", "type": "address" }, { "indexed": true, "name": "_amount", "type": "uint256" }, { "indexed": true, "name": "timestamp", "type": "uint256" } ], "name": "LogLenderInvestment", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_address", "type": "address" }, { "indexed": true, "name": "_amount", "type": "uint256" }, { "indexed": true, "name": "timestamp", "type": "uint256" } ], "name": "LogLenderWithdrawal", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_address", "type": "address" }, { "indexed": true, "name": "_amount", "type": "uint256" }, { "indexed": true, "name": "timestamp", "type": "uint256" } ], "name": "LogLenderChangeReturned", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_address", "type": "address" }, { "indexed": true, "name": "timestamp", "type": "uint256" } ], "name": "LogLenderVoteForRevoking", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_address", "type": "address" }, { "indexed": true, "name": "timestamp", "type": "uint256" } ], "name": "LogLenderVoteForFraud", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_address", "type": "address" }, { "indexed": true, "name": "_amount", "type": "uint256" }, { "indexed": true, "name": "timestamp", "type": "uint256" } ], "name": "LogLenderRefunded", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_currentOwner", "type": "address" }, { "indexed": true, "name": "_newOwner", "type": "address" } ], "name": "LogOwnershipTransfered", "type": "event" } ];
if (typeof web3 === 'undefined')
return showError("Please install MetaMask to access the Ethereum Web3 API from your Web browser.");
let peerToPeerLendingContractInstance = web3.eth.contract(peerToPeerLendingContractABI).at(peerToPeerLendingContract);
peerToPeerLendingContractInstance.getCredits(function(err, result) {
if (err){
console.log(err);
return;
}
console.log(result);
result.forEach(function(index){
let creditAddress = index;
let creditContract = web3.eth.contract(creditContractABI).at(creditAddress);
creditContract.getCreditInfo(function(err, info) {
if (err){
console.log(err);
}
let creditContractInfo = {
address: creditAddress,
borrower: info[0],
description: web3.toAscii(info[1]),
requestedAmount: info[2].toString(10),
requestedRepayments: info[3].toString(10),
repaymentInstallment: info[4].toString(10),
remainingRepayments: info[5].toString(10),
interest: info[6].toString(10),
returnAmount: info[7].toString(10),
state: parseInt(info[8].toString(10)),
active: info[9],
balance: info[10].toString(10)
}
$('#activeCredits')
.append(`<div class="col-sm-6 mt-5">
<div class="card">
<div class="card-header">
<h5 class="card-title">${creditContractInfo.description}</h5>
</div>
<div class="card-body">
<p class="card-text">
<span class="credit-description-property">Address:</span> ${creditContractInfo.address}
</p>
<p class="card-text">
<span class="credit-description-property">Borrower:</span> <a class="text-primary" href="/check?address=${creditContractInfo.borrower}" >${creditContractInfo.borrower}</a>
</p>
<p class="card-text">
<span class="credit-description-property">Requested:</span> ${web3.fromWei(creditContractInfo.requestedAmount, "ether")} ETH
</p>
<p class="card-text">
<span class="credit-description-property">Funded:</span> ${web3.fromWei(creditContractInfo.balance, "ether")} ETH
</p>
<p class="card-text">
<span class="credit-description-property">Installments Count:</span> ${creditContractInfo.requestedRepayments}
</p>
<p class="card-text">
<span class="credit-description-property">Interest:</span> ${web3.fromWei(creditContractInfo.interest, "ether")} ETH
</p>
</div>
<div class="card-footer">
<div class="input-group mb-3 investment-card">
<input type="number" class="form-control" name="amount" placeholder="Amount" aria-label="Amount" aria-describedby="basic-addon2">
<div class="input-group-append">
<button class="btn btn-outline-success" type="button" name="invest" data-contract-address="${creditContractInfo.address}">Invest</button>
</div>
</div>
<div class="mb-3">
<button type="button" class="btn btn-info" name="requestInterest" data-contract-address="${creditContractInfo.address}">Get interest</button>
<button type="button" class="btn btn-warning" name="revokeVote" data-contract-address="${creditContractInfo.address}">Revoke vote</button>
<button type="button" class="btn btn-warning" name="refund" data-contract-address="${creditContractInfo.address}">Refund</button>
<button type="button" class="btn btn-danger" name="fraudVote" data-contract-address="${creditContractInfo.address}">Fraud</button>
</div>
</div>
</div>
</div>
`)
})
})
});
var filter = web3.eth.filter("latest");
// watch for changes
filter.watch(function(error, result){
if (!error)
web3.eth.getBlock(result, function(error, result){
result.transactions.forEach(function(index) {
web3.eth.getTransactionReceipt(index, function(error, result) {
console.log(result);
})
})
})
});
$('body').on('click', 'button[name="invest"]', function (e) {
e.preventDefault();
let address = $(this).attr('data-contract-address');
let amountField = $(this).closest('div.investment-card').find('input');
let amount = amountField.val();
let selectedCreditContract = web3.eth.contract(creditContractABI).at(address);
let getData = selectedCreditContract.invest.getData();
if (amount < 0 || amount == "" || amount == "undefined"){
swal({
type: 'error',
title: 'Oops...',
text: 'Amount is missing!',
})
return;
}
swal({
title: 'Are you sure?',
text: "You won't be able to revert this!",
type: 'warning',
showCancelButton: true,
confirmButtonColor: '#3085d6',
cancelButtonColor: '#d33',
confirmButtonText: 'Yes, invest!'
}).then((result) => {
if (result.value) {
web3.eth.sendTransaction({from: web3.eth.coinbase, to: address, data: getData, value:web3.toWei(amount, "ether")}, function (err, result) {
if (err){
console.log(err);
return;
}
swal(
'Invested!',
'Your investment was sent.',
'success'
)
amountField.val('');
console.log("tx.hash: "+result.transactionHash);
})
}
})
});
$('body').on('click', 'button[name="requestInterest"]', function (e) {
e.preventDefault();
let address = $(this).attr('data-contract-address');
console.log('requestInterest from ' + address);
let selectedCreditContract = web3.eth.contract(creditContractABI).at(address);
let getData = selectedCreditContract.requestInterest.getData();
web3.eth.sendTransaction({from: web3.eth.coinbase, to: address, data: getData}, function (err, result) {
if (err){
console.log(err);
return;
}
console.log(result);
})
});
$('body').on('click', 'button[name="refund"]', function (e) {
e.preventDefault();
let address = $(this).attr('data-contract-address');
console.log('refund request from ' + address);
let selectedCreditContract = web3.eth.contract(creditContractABI).at(address);
let getData = selectedCreditContract.refund.getData();
web3.eth.sendTransaction({from: web3.eth.coinbase, to: address, data: getData}, function (err, result) {
if (err){
console.log(err);
return;
}
console.log(result);
})
});
$('body').on('click', 'button[name="revokeVote"]', function (e) {
e.preventDefault();
let address = $(this).attr('data-contract-address');
console.log('revoke vote ' + address);
let selectedCreditContract = web3.eth.contract(creditContractABI).at(address);
let getData = selectedCreditContract.revokeVote.getData();
web3.eth.sendTransaction({from: web3.eth.coinbase, to: address, data: getData}, function (err, result) {
if (err){
console.log(err);
return;
}
console.log(result);
})
});
$('body').on('click', 'button[name="fraudVote"]', function (e) {
e.preventDefault();
let address = $(this).attr('data-contract-address');
let selectedCreditContract = web3.eth.contract(creditContractABI).at(address);
let getData = selectedCreditContract.fraudVote.getData();
console.log('fraud vote ' + address);
swal({
title: 'Are you sure?',
text: "You won't be able to revert this!",
type: 'warning',
showCancelButton: true,
confirmButtonColor: '#3085d6',
cancelButtonColor: '#d33',
confirmButtonText: 'Yes, vote!'
}).then((result) => {
if (result.value) {
web3.eth.sendTransaction({from: web3.eth.coinbase, to: address, data: getData}, function (err, result) {
if (err){
console.log(err);
return;
}
swal(
'Voted!',
'Your vote was saved.',
'success'
)
console.log(result);
})
}
})
});
$('body').on('submit', '#borrowRequest', function (e) {
e.preventDefault();
let creditDescription = $(this).find('input[name="creditDescription"]').val();
let creditRequestedAmount = $(this).find('input[name="creditRequestedAmount"]').val();
let creditRequestedInstallmentsCount = $(this).find('input[name="creditRequestedInstallmentsCount"]').val();
console.log(creditDescription);
console.log(creditRequestedAmount);
console.log(web3.toWei(creditRequestedAmount, "ether"));
console.log(creditRequestedInstallmentsCount);
console.log(peerToPeerLendingContractInstance);
peerToPeerLendingContractInstance.applyForCredit(web3.toWei(creditRequestedAmount, "ether").toString(10),creditRequestedInstallmentsCount,creditDescription, function(err, result) {
if (err){
console.log(err);
return showError("Smart contract call failed");
}
web3.eth.getTransactionReceipt(result, (err, result) => {
if (err) {
return showError("Smart contract call failed");
}
console.log(result);
showInfo(`Credit successfully requested.`);
});
});
});
if (top.location.pathname === '/lend') {
console.log('lend');
}
else if (top.location.pathname === "/borrow") {
peerToPeerLendingContractInstance.users(web3.eth.coinbase, function(err, result) {
if (err) {
console.log(err);
alert(err);
return;
}
console.log(result);
let user = {
credited: result[0],
lastCredit: result[1],
fraudStatus: result[2]
}
if (user.credited == true){
$('#borrowContent')
.append(`
<div class="col-sm-8 offset-sm-2 alert-info">
<p>You cannot request another credit until you repay the last one!</p>
</div>
`)
}
else {
$('#borrowContent')
.append(`
<form id="borrowRequest">
<h1 class="text-center">Borrow request</h1>
<div class="form-group">
<label for="inputAddress">Description</label>
<input type="text" class="form-control" name="creditDescription" placeholder="Why do you need the money?" required>
</div>
<div class="form-row">
<div class="form-group col-md-6">
<label for="inputEmail4">Requested Amount:</label>
<input type="number" class="form-control" name="creditRequestedAmount" placeholder="e.g. 0.01 ETH" required>
</div>
<div class="form-group col-md-6">
<label for="inputPassword4">Installments count:</label>
<input type="number" class="form-control" name="creditRequestedInstallmentsCount" placeholder="e.g. 2" required>
</div>
</div>
<button type="submit" class="btn btn-primary btn-lg btn-block">Ask for funding</button>
</form>
`)
}
})
}
else if (top.location.pathname === "/profile") {
console.log('profile');
}
else if (top.location.pathname === "/check") {
let address = getUrlParameter('address');
peerToPeerLendingContractInstance.users(address, function(err, result) {
if (err) {
console.log(err);
return;
}
console.log(result);
let user = {
credited: result[0],
lastCredit: result[1],
fraudStatus: result[2]
}
$('#checkContent')
.append(`<div class="col-sm-8 offset-sm-2 ${user.fraudStatus == true ? "alert-danger" : "alert-success"}">
<p>Credited: ${user.credited == true ? "Yes" : "No"} </p>
<p>Last credit: ${user.lastCredit} </p>
<p>Fraud status: ${user.fraudStatus == true ? "Fraudlent" : "Good"} </p>
</div>`)
})
}
// Attach AJAX "loading" event listener
$(document).on({
ajaxStart: function() { $("#loadingBox").show() },
ajaxStop: function() { $("#loadingBox").hide() }
});
function showSuccess(message) {
swal({
type: 'success',
title: message,
showConfirmButton: false,
timer: 1500
})
}
function showInfo(message) {
swal(
'Info?',
message,
'question'
)
console.log(message);
}
//
function showError(errorMsg) {
swal({
type: 'error',
title: 'Oops...',
text: errorMsg,
})
console.log(errorMsg);
}
function getUrlParameter(sParam) {
let sPageURL = decodeURIComponent(window.location.search.substring(1)),
sURLVariables = sPageURL.split('&'),
sParameterName,
i;
for (i = 0; i < sURLVariables.length; i++) {
sParameterName = sURLVariables[i].split('=');
if (sParameterName[0] === sParam) {
return sParameterName[1] === undefined ? true : sParameterName[1];
}
}
};
});