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/*
 * Copyright (C) 2011 Everit Kft. (http://www.everit.org)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.everit.json.schema;

import org.everit.json.schema.internal.*;

import static java.util.Objects.requireNonNull;

/**
 * Implementations perform the validation against the "format" keyword (see JSON Schema spec section
 * 7).
 */
public abstract class AbstractFormatValidator implements FormatValidator {

    /**
     * Static factory method for {@code FormatValidator} implementations supporting the
     * {@code formatName}s mandated by the json schema spec.
     * 
     * 

     * date-time
     * email
     * hostname
     * uri
     * ipv4
     * ipv6
     * 
     *
     * @param formatName one of the 6 built-in formats.
     * @return a {@code FormatValidator} implementation handling the {@code formatName} format.
     */
    static FormatValidator forFormat(final String formatName) {
        requireNonNull(formatName, "formatName cannot be null");
        switch (formatName) {
            case "date-time":
                return new DateTimeFormatValidator();
            case "email":
                return new EmailFormatValidator();
            case "hostname":
                return new HostnameFormatValidator();
            case "uri":
                return new URIFormatValidator();
            case "ipv4":
                return new IPV4Validator();
            case "ipv6":
                return new IPV6Validator();
            default:
                throw new IllegalArgumentException("unsupported format: " + formatName);
        }
    }

    @Override
    public String formatName() {
        return "unnamed-format";
    }

}