Angular filter to replace parentheses with a negative and round big numbers

custom-currency

angular.module("app").filter("customCurrency", ["$filter", function($filter)
{
	return function(amount, currencySymbol, fractionSize)
	{
		var currency = $filter("currency");
		if (Math.abs(amount) > 1000)
		{
			fractionSize = 0;
			amount = Math.round(amount);
		}
		if (amount && amount < 0)
		{
			return currency(amount, currencySymbol, fractionSize).replace("(", "-").replace(")", "");
		}
		return currency(amount, currencySymbol, fractionSize);
	};
}]);