ValidExpiryDate.java

package com.checkout.paymentgw.payment.api.validation;

import jakarta.validation.Constraint;
import jakarta.validation.Payload;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Class-level validator that ensures the {@code (expiry_month, expiry_year)} pair
 * represents a future or current month.
 */
@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = ExpiryDateValidator.class)
public @interface ValidExpiryDate {

    String message() default "Expiry date should be in the future";

    Class<?>[] groups() default {};

    Class<? extends Payload>[] payload() default {};
}