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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.microstream.conf;

import io.micronaut.context.BeanContext;
import io.micronaut.context.annotation.Bean;
import io.micronaut.context.annotation.EachBean;
import io.micronaut.context.annotation.Factory;
import io.micronaut.context.annotation.Parameter;
import io.micronaut.context.exceptions.DisabledBeanException;
import io.micronaut.core.reflect.InstantiationUtils;
import io.micronaut.inject.qualifiers.Qualifiers;
import jakarta.inject.Singleton;
import one.microstream.persistence.binary.jdk17.types.BinaryHandlersJDK17;
import one.microstream.persistence.binary.jdk8.types.BinaryHandlersJDK8;
import one.microstream.storage.embedded.types.EmbeddedStorageFoundation;
import one.microstream.storage.embedded.types.EmbeddedStorageManager;
import one.microstream.storage.types.StorageManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author Sergio del Amo
 * @since 1.0.0
 */
@Factory
public class StorageManagerFactory {
    private static final Logger LOG = LoggerFactory.getLogger(StorageManagerFactory.class);

    private final BeanContext beanContext;

    /**
     * Constructor.
     * @param beanContext Bean Context.
     */
    public StorageManagerFactory(BeanContext beanContext) {
        this.beanContext = beanContext;
    }

    /**
     *
     * @param foundation EmbeddedStorageFoundation
     * @param name Name qualifier
     * @return EmbeddedStorageManager
     */
    @EachBean(EmbeddedStorageFoundation.class)
    @Bean(preDestroy = "shutdown")
    @Singleton
    public StorageManager createStorageManager(EmbeddedStorageFoundation foundation, @Parameter String name) {
        @SuppressWarnings("resource") // We don't want to close the storage manager
        EmbeddedStorageManager storageManager = foundation
            .onConnectionFoundation(BinaryHandlersJDK8::registerJDK8TypeHandlers)
            .onConnectionFoundation(BinaryHandlersJDK17::registerJDK17TypeHandlers)
            .createEmbeddedStorageManager()
            .start();

        if (storageManager.root() == null) {
            if (LOG.isTraceEnabled()) {
                LOG.trace("No data found");
            }

            if (!beanContext.containsBean(RootClassConfigurationProvider.class, Qualifiers.byName(name))) {
                throw new DisabledBeanException("Please, define a bean of type " + RootClassConfigurationProvider.class.getSimpleName() + " by name qualifier: " + name);
            }
            RootClassConfigurationProvider configuration = beanContext.getBean(RootClassConfigurationProvider.class, Qualifiers.byName(name));
            if (configuration.getRootClass() != null) {
                storageManager.setRoot(InstantiationUtils.instantiate(configuration.getRootClass()));
            }
            storageManager.storeRoot();
        }
        return storageManager;
    }
}