/**
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/.
 */
package org.mifosplatform.infrastructure.codes.service;

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

import org.mifosplatform.infrastructure.codes.data.CodeValueData;
import org.mifosplatform.infrastructure.codes.exception.CodeValueNotFoundException;
import org.mifosplatform.infrastructure.core.service.RoutingDataSource;
import org.mifosplatform.infrastructure.security.service.PlatformSecurityContext;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.dao.EmptyResultDataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.stereotype.Service;

@Service
public class CodeValueReadPlatformServiceImpl implements CodeValueReadPlatformService {

    private final JdbcTemplate jdbcTemplate;
    private final PlatformSecurityContext context;

    @Autowired
    public CodeValueReadPlatformServiceImpl(final PlatformSecurityContext context, final RoutingDataSource dataSource) {
        this.context = context;
        this.jdbcTemplate = new JdbcTemplate(dataSource);
    }

    private static final class CodeValueDataMapper implements RowMapper<CodeValueData> {

        public String schema() {
            return " cv.id as id, cv.code_value as value, cv.code_id as codeId, cv.code_description as description, cv.order_position as position,"
                    + " cv.is_active isActive from m_code_value as cv join m_code c on cv.code_id = c.id ";
        }

        @Override
        public CodeValueData mapRow(final ResultSet rs, @SuppressWarnings("unused") final int rowNum) throws SQLException {

            final Long id = rs.getLong("id");
            final String value = rs.getString("value");
            final Integer position = rs.getInt("position");
            final String description = rs.getString("description");
            final boolean isActive = rs.getBoolean("isActive");
            return CodeValueData.instance(id, value, position, description, isActive);
        }
    }

    @Override
    public Collection<CodeValueData> retrieveCodeValuesByCode(final String code) {

        this.context.authenticatedUser();

        final CodeValueDataMapper rm = new CodeValueDataMapper();
        final String sql = "select " + rm.schema() + "where c.code_name like ? and cv.is_active = 1 order by position";

        return this.jdbcTemplate.query(sql, rm, new Object[] { code });
    }

    @Override
    @Cacheable(value = "code_values", key = "T(org.mifosplatform.infrastructure.core.service.ThreadLocalContextUtil).getTenant().getTenantIdentifier().concat(#codeId+'cv')")
    public Collection<CodeValueData> retrieveAllCodeValues(final Long codeId) {

        this.context.authenticatedUser();

        final CodeValueDataMapper rm = new CodeValueDataMapper();
        final String sql = "select " + rm.schema() + "where cv.code_id = ? order by position";

        return this.jdbcTemplate.query(sql, rm, new Object[] { codeId });
    }

    @Override
    public CodeValueData retrieveCodeValue(final Long codeValueId) {

        try {
            this.context.authenticatedUser();

            final CodeValueDataMapper rm = new CodeValueDataMapper();
            final String sql = "select " + rm.schema() + "where cv.id = ? order by position";

            return this.jdbcTemplate.queryForObject(sql, rm, new Object[] { codeValueId });
        } catch (final EmptyResultDataAccessException e) {
            throw new CodeValueNotFoundException(codeValueId);
        }

    }
}