feat: show return, cash and structure on account cards (#114)

src/shared/lib/display.ts

@@ -3,9 +3,17 @@ const CENTS_PRECISION = 2;
 
 type FormatMoneyOptions = {
 	withRoundedCents?: boolean;
+	withSign?: boolean;
 	withZeroCents?: boolean;
 };
 
+const portfolioCategoryPresentation = {
+	BOND: { color: "grape.6", label: "portfolio.bonds" },
+	CASH: { color: "green.6", label: "portfolio.structure.cash" },
+	OTHER: { color: "orange.6", label: "portfolio.structure.other" },
+	STOCK: { color: "blue.6", label: "portfolio.stocks" },
+} as const;
+
 type Money = { currency: string; value: string };
 
 const dateFormatter = new Intl.DateTimeFormat("ru-RU", {
@@ -40,7 +48,11 @@ function formatMoney(
 	money: Money
 		| null
 		| undefined,
-	{ withRoundedCents = false, withZeroCents = false }: FormatMoneyOptions = {},
+	{
+		withRoundedCents = false,
+		withSign = false,
+		withZeroCents = false,
+	}: FormatMoneyOptions = {},
 ): string {
 	if (!money) return "—";
 
@@ -62,8 +74,25 @@ function formatMoney(
 		: integerPart;
 
 	const currency = money.currency === "RUB" ? "₽" : money.currency;
+	const formatted = `${formatDecimal(decimal)} ${currency}`;
 
-	return `${formatDecimal(decimal)} ${currency}`;
+	if (!withSign) return formatted;
+	if (isZeroDecimal(value))
+		return value.startsWith("-") ? formatted.slice(1) : formatted;
+
+	return value.startsWith("-") ? `−${formatted.slice(1)}` : `+${formatted}`;
+}
+
+function isZeroDecimal(value: string) {
+	const unsigned = value.startsWith("-") ? value.slice(1) : value;
+
+	const [integer = "", fraction = ""] = unsigned.split(
+		".",
+		DECIMAL_PART_COUNT,
+	);
+
+	return integer.replaceAll("0", "") === ""
+		&& fraction.replaceAll("0", "") === "";
 }
 
 function roundDecimalToCents(value: string): string {
@@ -116,4 +145,5 @@ export {
 	formatMoney,
 	formatSnapshotTime,
 	instrumentLogoUrl,
+	portfolioCategoryPresentation,
 };