feat(accounts): enrich brokerage account list

src/entities/brokerage-account/model/display.ts

@@ -1,5 +1,17 @@
 import type { BrokerageAccount } from "../api/useBrokerageAccounts";
 
+type Money = NonNullable<
+	BrokerageAccount["portfolioSummary"]
+>["totalsByCurrency"][number];
+
+type BrokerageAccountCard = {
+	account: BrokerageAccount;
+	summary:
+		| { state: "unavailable" }
+		| { state: "empty" }
+		| { state: "available"; totals: Money[]; remainingCurrencyCount: number };
+};
+
 function accountTypeKey(type: BrokerageAccount["type"]) {
 	return `accounts.types.${type}` as const;
 }
@@ -10,4 +22,31 @@ function errorCode(error: unknown): string | undefined {
 		: undefined;
 }
 
-export { accountTypeKey, errorCode };
+function brokerageAccountCards(
+	accounts: BrokerageAccount[],
+): BrokerageAccountCard[] {
+	return accounts.map((account) => {
+		const summary = account.portfolioSummary;
+		if (!summary) return { account, summary: { state: "unavailable" } };
+		if (!summary.totalsByCurrency.length)
+			return { account, summary: { state: "empty" } };
+		return {
+			account,
+			summary: {
+				state: "available",
+				totals: summary.totalsByCurrency.slice(0, 2),
+				remainingCurrencyCount: Math.max(
+					summary.totalsByCurrency.length - 2,
+					0,
+				),
+			},
+		};
+	});
+}
+
+export {
+	accountTypeKey,
+	type BrokerageAccountCard,
+	brokerageAccountCards,
+	errorCode,
+};