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/*
 * 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 com.arakelian.jdbc.store;

import org.immutables.value.Value;

import com.arakelian.jackson.utils.JacksonUtils;
import com.arakelian.jdbc.conn.ConnectionFactory;
import com.arakelian.jdbc.store.strategy.HasTimestampJdbcStrategy;
import com.arakelian.jdbc.store.strategy.JdbcStrategy;
import com.arakelian.jdbc.store.strategy.SimpleJdbcStrategy;
import com.arakelian.store.StoreConfig;
import com.arakelian.store.feature.HasId;
import com.arakelian.store.json.JacksonStoreObjectMapper;
import com.arakelian.store.json.StoreObjectMapper;

@Value.Immutable(copy = false)
@Value.Style(get = { "is*", "get*" })
public interface JdbcStoreConfig extends StoreConfig {
    public ConnectionFactory getConnectionFactory();

    /**
     * Returns SQL snippet that looks like 'delete from {table} where '
     *
     * @return a SQL snippet for delete
     */
    @Value.Derived
    public default String getDeleteSql() {
        return "delete from " + getTable();
    }

    /**
     * Return SQL snippet that looks like 'replace into {table}(id,document,created,updated)
     * values(?,?,?,?) on duplicate key update document=?,updated=?'
     *
     * @return a SQL snippet for insert
     **/
    @Value.Derived
    public default String getInsertSql() {
        return getStrategy().getInsertSql(getTable());
    }

    /**
     * Return SQL snippet that looks like 'select document from {table} '
     *
     * @return a SQL snippet for select
     **/
    @Value.Derived
    public default String getSelectSql() {
        return getStrategy().getSelectSql(getTable());
    }

    @Value.Default
    public default JdbcStrategy getStrategy() {
        final Class clazz = getClazz();
        final StoreObjectMapper serializer = new JacksonStoreObjectMapper<>(clazz,
                JacksonUtils.getObjectMapper());

        final JdbcStrategy strategy;
        if (HasTimestampJdbcStrategy.supports(clazz)) {
            strategy = new HasTimestampJdbcStrategy<>(serializer);
        } else {
            strategy = new SimpleJdbcStrategy<>(serializer);
        }
        return strategy;
    }
}