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/*
 * Copyright 2017-2022 original 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
 *
 * https://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 io.micronaut.data.document.processor.mapper;

import io.micronaut.core.annotation.AnnotationClassValue;
import io.micronaut.core.annotation.AnnotationValue;
import io.micronaut.core.annotation.AnnotationValueBuilder;
import io.micronaut.data.annotation.MappedProperty;
import io.micronaut.data.document.serde.CustomConverterDeserializer;
import io.micronaut.data.document.serde.CustomConverterSerializer;
import io.micronaut.data.model.runtime.convert.AttributeConverter;
import io.micronaut.inject.annotation.TypedAnnotationMapper;
import io.micronaut.inject.ast.ClassElement;
import io.micronaut.inject.visitor.VisitorContext;
import io.micronaut.serde.config.annotation.SerdeConfig;

import java.util.Collections;
import java.util.List;
import java.util.Map;

/**
 * Serdeable mapper of {@link MappedProperty}.
 *
 * @author Denis Stepanov
 * @since 3.3
 */
public class MappedPropertyMapper implements TypedAnnotationMapper {

    @Override
    public Class annotationType() {
        return MappedProperty.class;
    }

    @Override
    public List> map(AnnotationValue annotation, VisitorContext visitorContext) {
        AnnotationValueBuilder builder = AnnotationValue.builder(SerdeConfig.class);
        annotation.stringValue().ifPresent(property -> {
            builder.member(SerdeConfig.PROPERTY, property);
        });
        annotation.stringValue("converter").ifPresent(val -> {
            visitorContext.getClassElement(val).ifPresent(attributeConverterClassElement -> {
                ClassElement genericType = attributeConverterClassElement.getGenericType();
                Map typeArguments = genericType.getTypeArguments(AttributeConverter.class.getName());
                if (typeArguments.isEmpty()) {
                    typeArguments = genericType.getTypeArguments("javax.persistence.AttributeConverter");
                }
                if (typeArguments.isEmpty()) {
                    typeArguments = genericType.getTypeArguments("jakarta.persistence.AttributeConverter");
                }
                ClassElement converterPersistedType = typeArguments.get("Y");
                if (converterPersistedType != null) {
                    builder.member(SerdeConfig.SERIALIZE_AS, new AnnotationClassValue<>(converterPersistedType.getName()));
                    builder.member(SerdeConfig.DESERIALIZE_AS, new AnnotationClassValue<>(converterPersistedType.getName()));
                }
            });
            builder.member(SerdeConfig.SERIALIZER_CLASS, CustomConverterSerializer.class);
            builder.member(SerdeConfig.DESERIALIZER_CLASS, CustomConverterDeserializer.class);
        });
        return Collections.singletonList(builder.build());
    }

}