/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.dubbo.rpc.protocol.tri.rest.support.spring;

import org.apache.dubbo.common.utils.StringUtils;
import org.apache.dubbo.rpc.protocol.tri.rest.argument.AbstractAnnotationBaseArgumentResolver;
import org.apache.dubbo.rpc.protocol.tri.rest.mapping.meta.AnnotationMeta;
import org.apache.dubbo.rpc.protocol.tri.rest.mapping.meta.NamedValueMeta;
import org.apache.dubbo.rpc.protocol.tri.rest.mapping.meta.ParameterMeta;

import java.lang.annotation.Annotation;
import java.util.Optional;

public abstract class AbstractSpringArgumentResolver extends AbstractAnnotationBaseArgumentResolver {

    @Override
    protected NamedValueMeta createNamedValueMeta(ParameterMeta param, AnnotationMeta<Annotation> ann) {
        boolean required = param.getType() != Optional.class && Helper.isRequired(ann);
        return new NamedValueMeta(ann.getValue(), required, Helper.defaultValue(ann));
    }

    @Override
    protected Object filterValue(Object value, NamedValueMeta meta) {
        return StringUtils.EMPTY_STRING.equals(value) ? meta.defaultValue() : value;
    }
}
