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/*
 * Copyright (c) 2013, Francis Galiegue 
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the Lesser GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * 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
 * Lesser GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */

package com.github.fge.jsonschema.format.helpers;

import com.github.fge.jackson.NodeType;
import com.github.fge.jsonschema.exceptions.ProcessingException;
import com.github.fge.jsonschema.format.AbstractFormatAttribute;
import com.github.fge.jsonschema.processors.data.FullData;
import com.github.fge.jsonschema.report.ProcessingReport;
import com.github.fge.msgsimple.bundle.MessageBundle;
import com.google.common.net.InternetDomainName;

/**
 * Validator for the {@code host-name} format attribute.
 *
 * Important note: the basis for host name format validation is RFC 1034. The RFC does not
 *  require that a host name have more than one domain name component. As
 * such, {@code foo} is a valid hostname.
 *
 * Guava's {@link InternetDomainName} is used for validation.
 */
public final class SharedHostNameAttribute
    extends AbstractFormatAttribute
{
    public SharedHostNameAttribute(final String fmt)
    {
        super(fmt, NodeType.STRING);
    }

    @Override
    public void validate(final ProcessingReport report,
        final MessageBundle bundle, final FullData data)
        throws ProcessingException
    {
        final String value = data.getInstance().getNode().textValue();

        try {
            InternetDomainName.from(value);
        } catch (IllegalArgumentException ignored) {
            report.error(newMsg(data, bundle, "err.format.invalidHostname")
                .putArgument("value", value));
        }
    }
}