tool.03.balance.check.html

<html>
<body>

<script src="js/csv.js"></script>

<script src="js/modules.js"></script>
<script>
var bitcoin = modules.bitcoin;
//var Buffer = modules.buffer.Buffer;
//var Bip38 = modules.bip38;
//var bip38 = new Bip38()
</script>

<button onclick="addFiles()">Add Files</button>
<button id="computeBalanceButton" disabled onclick="computeBalance()">Compute Balance</button>
<div id="outputText"></div>
<br>

<table>
<tbody>
<tr><td>Files</td><td></td></tr>
</tbody>
</table>
<script>

var tbody = document.querySelector('tbody');
var generateButton = document.getElementById('computeBalanceButton');
var outputText = document.getElementById('outputText');

function getFileExtension(filename)
{
	var index = filename.lastIndexOf('.');
	if (index != -1)
	{
		return filename.slice(index+1);
	}
	return '';
}

function getFileBaseName(filename)
{
	var extIndex = filename.lastIndexOf('.');
	if (extIndex == -1)
	{
		extIndex = filename.length;
	}
	var pathIndex = filename.lastIndexOf('/');
	return filename.slice(pathIndex+1, extIndex);
}

function isAddress(string) {
	try {
		bitcoin.address.fromBase58Check(string)
	} catch (e) {
		return false
	}

	return true
}


var inputs = [];

function filesSelected()
{
	if (this.files.length == 0)
	{
		return;
	}
	for (var i = 0; i < this.files.length; i++)
	{
		var extension = getFileExtension(this.files[i].name);
		if (extension != 'csv' && extension != 'json')
		{
			alert('expecting csv or json file but got: ' + this.files[i].name);
			return;
		}
		if (extension == 'json')
		{
			var baseName = getFileBaseName(this.files[i].name);
			if (!isAddress(baseName))
			{
				alert('expected json file with bitcoin address as filename but got: ' + this.files[i].name);
				return;
			}
		}
	}
	var input = this;
	inputs.push(input);
	var tr = document.createElement('tr');
	var td = document.createElement('td');
	td.insertAdjacentHTML('beforeend', input.files[0].name);
	for (var i = 1; i < input.files.length; i++)
	{
		td.insertAdjacentHTML('beforeend', '<br>' + input.files[i].name);
	}
	tr.appendChild(td);
	var td = document.createElement('td');
	var button = document.createElement('button');
	button.onclick = function ()
	{
		var index = inputs.indexOf(input);
		inputs.splice(index, 1);
		tbody.removeChild(tr);
		if (inputs.length == 0)
		{
			computeBalanceButton.disabled = true;
		}
	}
	td.appendChild(button);
	tr.appendChild(td);
	button.textContent = 'Remove';
	tbody.appendChild(tr);
	computeBalanceButton.disabled = false;
}

function addFiles()
{
	var input = document.createElement('input');
	input.type = 'file';
	input.multiple = true;
	input.onchange = filesSelected;
	input.click();
}


var totalBalance = 0;

function integrateCSV(csv)
{
	for (var i = 0; i < csv.length; i++)
	{
		totalBalance += parseFloat(csv[i][1]);
	}
}

function integrateJSON(wallet, address)
{
	for (var t = 0; t < wallet.txs.length; t++)
	{
		var tx = wallet.txs[t];
		var balance = 0;
		for (var ti = 0; ti < tx.vin.length; ++ti)
		{
			if (tx.vin[ti].addr != address)
			{
				continue;
			}
			balance -= parseFloat(tx.vin[ti].value);
		}
		for (var to = 0; to < tx.vout.length; ++to)
		{
			var scriptAddresses = tx.vout[to].scriptPubKey.addresses;
			var sa = 0;
			for (; sa < scriptAddresses.length; sa++)
			{
				if (scriptAddresses[sa] == address)
				{
					break;
				}
			}
			if (sa == scriptAddresses.length)
			{
				continue;
			}
			balance += parseFloat(tx.vout[to].value);
		}
		totalBalance += balance;
	}
}


var files = [];
var fileName = '';
var fileIndex = 0;

function onDone()
{
	outputText.textContent = 'balance : ' + totalBalance;
}

function readerOnLoad(e)
{
	var extension = getFileExtension(fileName);
	if (extension == 'csv')
	{
		var csv = CSV.parse(this.result);
		integrateCSV(csv);
	}
	else
	{
		var json = JSON.parse(this.result);
		integrateJSON(json, getFileBaseName(fileName));
	}
	readNext();
}

function readNext()
{
	if (fileIndex >= files.length)
	{
		onDone();
		return;
	}
	var reader = new FileReader();
	reader.onload = readerOnLoad;
	reader.readAsText(files[fileIndex]);
	fileName = files[fileIndex].name;
	fileIndex++;
}

function computeBalance()
{
	totalBalance = 0;

	files = [];
	// gather files
	for (var i = 0; i < inputs.length; i++)
	{
		var input = inputs[i];
		for (var j = 0; j < input.files.length; j++)
		{
			files.push(input.files[j]);
		}
	}

	// start reading  files
	fileIndex = 0;
	readNext();
}

</script>

</body>
</html>