/**
 * Copyright (C) 2010-16 the original author or authors.
 *
 * 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 com.github.rvesse.airline.examples.userguide.restrictions.custom;

import java.lang.annotation.Annotation;
import java.util.Collections;
import java.util.List;

import com.github.rvesse.airline.restrictions.ArgumentsRestriction;
import com.github.rvesse.airline.restrictions.OptionRestriction;
import com.github.rvesse.airline.restrictions.factories.ArgumentsRestrictionFactory;
import com.github.rvesse.airline.restrictions.factories.OptionRestrictionFactory;

public class MultipleRestrictionFactory implements OptionRestrictionFactory, ArgumentsRestrictionFactory {

    @Override
    public ArgumentsRestriction createArgumentsRestriction(Annotation annotation) {
        if (annotation instanceof MultipleOf) {
            return create((MultipleOf) annotation);
        }
        return null;
    }

    @Override
    public List<Class<? extends Annotation>> supportedArgumentsAnnotations() {
        return Collections.<Class<? extends Annotation>> singletonList(MultipleOf.class);
    }

    @Override
    public OptionRestriction createOptionRestriction(Annotation annotation) {
        if (annotation instanceof MultipleOf) {
            return create((MultipleOf) annotation);
        }
        return null;
    }

    @Override
    public List<Class<? extends Annotation>> supportedOptionAnnotations() {
        return Collections.<Class<? extends Annotation>> singletonList(MultipleOf.class);
    }
    
    private MultipleOfRestriction create(MultipleOf multipleOf) {
        return new MultipleOfRestriction(multipleOf.value());
    }

}
