import { ValidationOptions } from "../ValidationOptions";
import { buildMessage, ValidateBy } from "../common/ValidateBy";

export const MAX_DATE = "maxDate";

 /**
 * Checks if the value is a date that's before the specified date.
 */
export function maxDate(date: unknown, maxDate: Date): boolean {
    return date instanceof Date && date.getTime() <= maxDate.getTime();
}

/**
 * Checks if the value is a date that's after the specified date.
 */
export function MaxDate(date: Date, validationOptions?: ValidationOptions): PropertyDecorator {
    return ValidateBy(
        {
            name: MAX_DATE,
            constraints: [date],
            validator: {
                validate: (value, args): boolean => maxDate(value, args.constraints[0]),
                defaultMessage: buildMessage(
                    (eachPrefix) => "maximal allowed date for " + eachPrefix + "$property is $constraint1",
                    validationOptions
                )
            }
        },
        validationOptions
    );
}