/*-
 * ============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.ra.rule.dao;

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

import org.openecomp.sdnc.ra.equip.data.EquipmentLevel;
import org.openecomp.sdnc.ra.rule.data.ResourceRule;
import org.openecomp.sdnc.ra.rule.data.ResourceThreshold;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;

public class ResourceRuleDaoImpl implements ResourceRuleDao {

	@SuppressWarnings("unused")
	private static final Logger log = LoggerFactory.getLogger(ResourceRuleDaoImpl.class);

	private static final String GET1_SQL =
	        "SELECT * FROM RESOURCE_RULE WHERE service_model = ? AND end_point_position = ? AND equipment_level = ?";
	private static final String GET2_SQL =
	        "SELECT * FROM RESOURCE_RULE WHERE service_model = ? AND end_point_position = ? AND equipment_level = ? AND resource_name = ?";
	private static final String THRESHOLD_SQL = "SELECT * FROM RESOURCE_THRESHOLD WHERE resource_rule_id = ?";

	private JdbcTemplate jdbcTemplate;
	ResourceRuleRowMapper resourceRuleRowMapper = new ResourceRuleRowMapper();
	ResourceThresholdRowMapper resourceThresholdRowMapper = new ResourceThresholdRowMapper();

	@Override
	public List<ResourceRule> getResourceRules(
	        String serviceModel,
	        String endPointPosition,
	        EquipmentLevel equipLevel) {
		List<ResourceRule> resourceRuleList = jdbcTemplate.query(GET1_SQL,
		        new Object[] { serviceModel, endPointPosition, equipLevel.toString() }, resourceRuleRowMapper);

		for (ResourceRule rr : resourceRuleList)
			rr.thresholdList = jdbcTemplate.query(THRESHOLD_SQL, new Object[] { rr.id }, resourceThresholdRowMapper);

		return resourceRuleList;
	}

	@Override
	public ResourceRule getResourceRule(
	        String serviceModel,
	        String endPointPosition,
	        EquipmentLevel equipLevel,
	        String resourceName) {
		List<ResourceRule> resourceRuleList = jdbcTemplate.query(GET2_SQL,
		        new Object[] { serviceModel, endPointPosition, equipLevel.toString(), resourceName },
		        resourceRuleRowMapper);

		if (resourceRuleList == null || resourceRuleList.isEmpty())
			return null;

		ResourceRule rr = resourceRuleList.get(0);
		rr.thresholdList = jdbcTemplate.query(THRESHOLD_SQL, new Object[] { rr.id }, resourceThresholdRowMapper);

		return rr;
	}

	private static class ResourceRuleRowMapper implements RowMapper<ResourceRule> {

		@Override
		public ResourceRule mapRow(ResultSet rs, int rowNum) throws SQLException {
			ResourceRule rl = new ResourceRule();
			rl.id = rs.getLong("resource_rule_id");
			rl.resourceName = rs.getString("resource_name");
			rl.serviceModel = rs.getString("service_model");
			rl.endPointPosition = rs.getString("end_point_position");
			rl.serviceExpression = rs.getString("service_expression");
			rl.equipmentLevel = rs.getString("equipment_level");
			rl.equipmentExpression = rs.getString("equipment_expression");
			rl.allocationExpression = rs.getString("allocation_expression");
			rl.softLimitExpression = rs.getString("soft_limit_expression");
			rl.hardLimitExpression = rs.getString("hard_limit_expression");
			return rl;
		}
	}

	private static class ResourceThresholdRowMapper implements RowMapper<ResourceThreshold> {

		@Override
		public ResourceThreshold mapRow(ResultSet rs, int rowNum) throws SQLException {
			ResourceThreshold th = new ResourceThreshold();
			th.expression = rs.getString("threshold_expression");
			th.message = rs.getString("threshold_message");
			return th;
		}
	}

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