GraphQL SDL to Zod Validation Schema Generator

import { z } from "zod";

// =========================================
// Custom Scalars
// =========================================

export const DateTimeSchema = z.string().datetime();
export type DateTime = z.infer<typeof DateTimeSchema>;

// =========================================
// Enums
// =========================================

export const CurrencySchema = z.enum(["USD", "EUR", "GBP", "JPY"]);
export type Currency = z.infer<typeof CurrencySchema>;

export const OrderStatusSchema = z.enum(["PENDING", "PROCESSING", "SHIPPED", "DELIVERED", "CANCELLED"]);
export type OrderStatus = z.infer<typeof OrderStatusSchema>;

// =========================================
// Object Types
// =========================================

export const UserSchema = z.object({
  id: z.string(),
  email: z.string(),
  fullName: z.string(),
  phoneNumber: z.string().nullish(),
  addresses: z.array(AddressSchema),
  primaryPaymentMethod: PaymentMethodSchema.nullish(),
  createdAt: z.string().datetime(),
});
export type User = z.infer<typeof UserSchema>;

export const AddressSchema = z.object({
  id: z.string(),
  street: z.string(),
  city: z.string(),
  postalCode: z.string(),
  countryCode: z.string(),
  isDefault: z.boolean(),
});
export type Address = z.infer<typeof AddressSchema>;

export const MoneySchema = z.object({
  amount: z.number(),
  currency: CurrencySchema,
});
export type Money = z.infer<typeof MoneySchema>;

export const PaymentMethodSchema = z.object({
  id: z.string(),
  type: z.string(),
  last4: z.string(),
  expMonth: z.number().int(),
  expYear: z.number().int(),
});
export type PaymentMethod = z.infer<typeof PaymentMethodSchema>;

export const OrderSchema = z.object({
  id: z.string(),
  orderNumber: z.string(),
  customer: UserSchema,
  status: OrderStatusSchema,
  total: MoneySchema,
  itemsCount: z.number().int(),
  createdAt: z.string().datetime(),
});
export type Order = z.infer<typeof OrderSchema>;

// =========================================
// Input Object Types
// =========================================

export const CheckoutInputSchema = z.object({
  userId: z.string(),
  shippingAddressId: z.string(),
  paymentMethodId: z.string(),
  notes: z.string().nullish(),
  couponCode: z.string().nullish(),
});
export type CheckoutInput = z.infer<typeof CheckoutInputSchema>;