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/*
 * Copyright (C) 2020 Graylog, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the Server Side Public License, version 1,
 * as published by MongoDB, Inc.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * Server Side Public License for more details.
 *
 * You should have received a copy of the Server Side Public License
 * along with this program. If not, see
 * .
 */
package org.graylog2.validation;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.nio.charset.StandardCharsets;

public class SizeInBytesValidator implements ConstraintValidator {
    private int min;
    private int max;

    @Override
    public void initialize(final SizeInBytes annotation) {
        this.min = annotation.min();
        this.max = annotation.max();
    }

    @Override
    public boolean isValid(final String object,
                           final ConstraintValidatorContext constraintContext) {
        if (object == null) {
            return true;
        }

        final int lengthInBytes = object.getBytes(StandardCharsets.UTF_8).length;
        return lengthInBytes >= this.min && lengthInBytes <= this.max;
    }
}