/*
 * 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.shardingsphere.database.connector.core.type;

import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import org.apache.shardingsphere.database.connector.core.exception.UnsupportedStorageTypeException;
import org.apache.shardingsphere.infra.exception.ShardingSpherePreconditions;
import org.apache.shardingsphere.infra.spi.ShardingSphereServiceLoader;
import org.apache.shardingsphere.infra.spi.type.typed.TypedSPILoader;

import java.sql.DatabaseMetaData;
import java.sql.SQLException;
import java.util.Collection;
import java.util.stream.Collectors;

/**
 * Database type factory.
 */
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public final class DatabaseTypeFactory {
    
    /**
     * Get database type.
     *
     * @param url database URL
     * @return database type
     */
    public static DatabaseType get(final String url) {
        Collection<DatabaseType> databaseTypes = ShardingSphereServiceLoader.getServiceInstances(DatabaseType.class).stream().filter(each -> matchURLs(url, each)).collect(Collectors.toList());
        ShardingSpherePreconditions.checkNotEmpty(databaseTypes, () -> new UnsupportedStorageTypeException(url));
        for (DatabaseType each : databaseTypes) {
            if (!each.getTrunkDatabaseType().isPresent()) {
                return each;
            }
        }
        return databaseTypes.iterator().next();
    }
    
    /**
     * Get database type.
     *
     * @param metaData database meta data
     * @return database type
     * @throws SQLException SQL exception
     */
    public static DatabaseType get(final DatabaseMetaData metaData) throws SQLException {
        return metaData.getDatabaseProductName().contains("Hive") ? TypedSPILoader.getService(DatabaseType.class, "Hive") : get(metaData.getURL());
    }
    
    private static boolean matchURLs(final String url, final DatabaseType databaseType) {
        return databaseType.getJdbcUrlPrefixes().stream().anyMatch(url::startsWith);
    }
}
