/*-
 * ============LICENSE_START=======================================================
 * openECOMP : SDN-C
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property. All rights
 * 							reserved.
 * ================================================================================
 * 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
 * 
 *      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.
 * ============LICENSE_END=========================================================
 */

package org.openecomp.sdnc.lock.dao;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Date;
import java.util.List;

import org.openecomp.sdnc.lock.data.ResourceLock;
import org.openecomp.sdnc.util.db.CachedDataSourceWrap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;

public class ResourceLockDaoImpl implements ResourceLockDao {

	private static final Logger log = LoggerFactory.getLogger(ResourceLockDaoImpl.class);

	private JdbcTemplate jdbcTemplate;
	private boolean testing = false;

	@Override
	public void lockTable() {
		if (!testing) {
			jdbcTemplate.update("LOCK TABLES RESOURCE_LOCK WRITE");
		log.info("Table RESOURCE_LOCK locked.");
	}
	}

	@Override
	public void unlockTable() {
		if (!testing) {
			jdbcTemplate.update("UNLOCK TABLES");
		log.info("Table RESOURCE_LOCK unlocked.");

			CachedDataSourceWrap ds = (CachedDataSourceWrap) jdbcTemplate.getDataSource();
			ds.releaseConnection();
		}
	}

	@Override
	public void add(ResourceLock l) {
		jdbcTemplate.update(
		        "INSERT INTO RESOURCE_LOCK (resource_name, lock_holder, lock_count, lock_time, expiration_time)\n" +
		                "VALUES (?, ?, ?, ?, ?)",
		        new Object[] { l.resourceName, l.lockHolder, l.lockCount, l.lockTime, l.expirationTime });
	}

	@Override
	public void update(long id, Date lockTime, Date expirationTime, int lockCount) {
		jdbcTemplate.update(
		        "UPDATE RESOURCE_LOCK SET lock_time = ?, expiration_time = ?, lock_count = ? WHERE resource_lock_id = ?",
		        new Object[] { lockTime, expirationTime, lockCount, id });
	}

	@Override
	public ResourceLock getByResourceName(String resourceName) {
		List<ResourceLock> ll = jdbcTemplate.query("SELECT * FROM RESOURCE_LOCK WHERE resource_name = ?",
		        new Object[] { resourceName }, new RowMapper<ResourceLock>() {

			        @Override
			        public ResourceLock mapRow(ResultSet rs, int rowNum) throws SQLException {
				        ResourceLock rl = new ResourceLock();
				        rl.id = rs.getLong("resource_lock_id");
				        rl.resourceName = rs.getString("resource_name");
				        rl.lockHolder = rs.getString("lock_holder");
				        rl.lockCount = rs.getInt("lock_count");
				        rl.lockTime = rs.getTimestamp("lock_time");
				        rl.expirationTime = rs.getTimestamp("expiration_time");
				        return rl;
			        }
		        });
		return ll != null && !ll.isEmpty() ? ll.get(0) : null;
	}

	@Override
	public void delete(long id) {
		jdbcTemplate.update("DELETE FROM RESOURCE_LOCK WHERE resource_lock_id = ?", new Object[] { id });
	}

	@Override
	public void decrementLockCount(long id) {
		jdbcTemplate.update("UPDATE RESOURCE_LOCK SET lock_count = lock_count - 1 WHERE resource_lock_id = ?",
		        new Object[] { id });
	}

	public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
		this.jdbcTemplate = jdbcTemplate;
	}

	public void setTesting(boolean testing) {
		this.testing = testing;
	}
}