web3 script for printing Ethereum account balances

checkAllBalances.js

//
// Pretty print accounts summary. Constant function, does not consume gas. No unlocks needed.
//
// Usage:
//	Save to file, e.g. '/tmp/checkAllBalances.js'
//	From the geth console, do: loadScript('/tmp/checkAllBalances.js');
//	Execute with checkAllBalances()
//

// For the price feed ABI, see http://forum.ethereum.org/discussion/3417/ask-%CE%9E-community-what-do-you-think-of-our-new-smart-contract-pricefeed

var priceFeedAbi = [
{
	"constant":true,
	"inputs": [{"name":"symbol","type":"bytes32"}],
	"name":"getPrice",
	"outputs":[{"name":"currPrice","type":"uint256"}],
	"type":"function"
},
{
	"constant":true,"inputs":[{"name":"symbol","type":"bytes32"}],
	"name":"getTimestamp",
	"outputs":[{"name":"timestamp","type":"uint256"}],
	"type":"function"
}];

var priceFeed = web3.eth.contract(priceFeedAbi).at("0x1194e966965418c7d73a42cceeb254d875860356");

function priceFeedQuery(fun, symbol) {
	var cbValue;
	var cb = function(name, type) {
		cbValue = type;
		return true;
	}
	fun.call(symbol, cb);
	return parseInt(cbValue);
}

var trunc = function(number, precision) {
	var shift = Math.pow(10, precision)
	return parseInt(number * shift) / shift
}

function padString(str, len) {
	while (str.length < len)
		str = " " + str;
	return str
}

function prettyPrintEther(ether) {
	var str;
	if (ether >= 1)
		str = trunc(ether, 3) + "  ether";
	else if (ether > 1e-5)
		str = trunc(ether*1000, 3) + " finney";
	else if (ether > 1e-7)
		str = trunc(ether*1000, 6) + " finney";
	else if (ether > 1e-12)
		str = trunc(ether*1e12, 3) + "   gwei";
	else
		str = parseInt(web3.toWei(ether)) + "    wei";
		
	return str;
}

function checkAllBalances() {
	var btc_timestamp = priceFeedQuery(priceFeed.getTimestamp, "BTC_ETH");
	var btc_eth = priceFeedQuery(priceFeed.getPrice, "BTC_ETH") / 1000000;
	var usd_eth = priceFeedQuery(priceFeed.getPrice, "USDT_ETH") / 1000000;

	console.log("");
	console.log("Current price at " + new Date(btc_timestamp*1000).toString())
	console.log("\t" + (btc_eth*1000) + " mBTC/ether")
	console.log("\t$" + usd_eth + "/ether");
	console.log("\t$" + (priceFeedQuery(priceFeed.getPrice, "USDT_BTC") / 1000000) + "/฿");
	console.log("");

	var i = 0;
	var totalBtc = 0, totalDollar = 0, totalEther = 0;
	eth.accounts.forEach( function(e) {
		var ether = parseFloat(web3.fromWei(eth.getBalance(e), "ether"));
		var btc = ether * btc_eth;
		var dollar = ether * usd_eth;
		totalBtc = totalBtc + btc;
		totalDollar = totalDollar + dollar;
		totalEther = totalEther + ether;
		console.log("eth.accounts["+i+"]: " +  e + ": " +
			padString(prettyPrintEther(ether), 15) + ", " +
			padString("฿" + trunc(btc, 3) + ", ", 12) +
			"$" + trunc(dollar, 2)); 
		i++;
	})
	console.log("");
	console.log("Total: " +
		padString(prettyPrintEther(totalEther), 69) + ", " +
		padString("฿" + trunc(totalBtc, 6) + ", ", 12) +
		"$" + trunc(totalDollar, 2))
	console.log("");
};