refactor: enforce frontend view model boundaries

src/entities/bank-card/model/form.schema.ts

@@ -0,0 +1,81 @@
+import { z } from "zod";
+
+import { validationMessage } from "@/shared/i18n";
+
+import { bankToday, moneyCents } from "./form-validation";
+const ISO_DATE_LENGTH = 10;
+const MAX_CARD_NAME_LENGTH = 100;
+const MIN_BALANCE_KOPECKS = -9_223_372_036_854_775_808n;
+const MAX_BALANCE_KOPECKS = 9_223_372_036_854_775_807n;
+
+const moneySchema = z.string().refine(
+	(value) => {
+		const cents = moneyCents(value);
+
+		return (
+			cents !== null
+			&& cents >= MIN_BALANCE_KOPECKS
+			&& cents <= MAX_BALANCE_KOPECKS
+		);
+	},
+	{ error: validationMessage("bank.validation.money") },
+);
+
+const positiveMoneySchema = moneySchema.refine(
+	(value) => {
+		const cents = moneyCents(value);
+
+		return cents === null || cents > 0n;
+	},
+	{ error: validationMessage("bank.validation.positive") },
+);
+
+const bankDateSchema = z
+	.string()
+	.refine(
+		value =>
+			/^\d{4}-\d{2}-\d{2}$/.test(value)
+			&& value >= "0001-01-01"
+			&& !Number.isNaN(Date.parse(`${value}T00:00:00Z`))
+			&& new Date(`${value}T00:00:00Z`).toISOString().slice(0, ISO_DATE_LENGTH)
+			=== value
+			&& value <= bankToday(),
+		{ error: validationMessage("bank.validation.date") },
+	);
+
+const bankCardSchema = z.object({
+	bankName: z
+		.string()
+		.trim()
+		.max(
+			MAX_CARD_NAME_LENGTH,
+			validationMessage("bank.validation.bankName")(undefined),
+		),
+	lastFour: z.string().refine(value => !value || /^\d{4}$/.test(value), {
+		error: validationMessage("bank.validation.lastFour"),
+	}),
+	name: z
+		.string()
+		.trim()
+		.min(1, validationMessage("bank.validation.name")(undefined))
+		.max(
+			MAX_CARD_NAME_LENGTH,
+			validationMessage("bank.validation.name")(undefined),
+		),
+	openingBalance: moneySchema,
+	openingDate: bankDateSchema,
+	paymentSystem: z
+		.enum(["", "mir", "visa", "mastercard"], {
+			error: validationMessage("bank.validation.paymentSystem"),
+		})
+		.optional(),
+});
+
+type BankCardValues = z.infer<typeof bankCardSchema>;
+
+export {
+	bankCardSchema,
+	type BankCardValues,
+	bankDateSchema,
+	positiveMoneySchema,
+};