/**
 * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Apereo
 * 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 the
 * following location:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>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.apereo.portal.io.xml.permission;

import com.google.common.base.Function;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.sql.DataSource;
import org.apereo.portal.io.xml.IPortalData;
import org.apereo.portal.io.xml.IPortalDataType;
import org.apereo.portal.io.xml.SimpleStringPortalData;
import org.apereo.portal.security.IPermission;
import org.springframework.beans.factory.annotation.Required;
import org.springframework.jdbc.core.JdbcOperations;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;

/**
 * Lists each Permission Set in the portal during the export process.
 *
 */
public class PermissionSetsDataFunction
        implements Function<IPortalDataType, Iterable<? extends IPortalData>> {
    private JdbcOperations jdbcOperations;

    /**
     * NOTE: Both SUBSCRIBE and BROWSE are handled inside the portlet-definition.xml file whenever
     * they apply to <em>portlets</em>. (They are handled here, per normal, when they apply to
     * categories.)
     */
    private static final String QUERY =
            "SELECT DISTINCT UPP.OWNER, UPET.ENTITY_TYPE_NAME, UPP.PRINCIPAL_KEY, UPP.ACTIVITY, UPP.PRINCIPAL_TYPE\n "
                    + "FROM UP_PERMISSION UPP\n "
                    + "LEFT JOIN UP_ENTITY_TYPE UPET ON UPP.PRINCIPAL_TYPE = UPET.ENTITY_TYPE_ID\n "
                    + "WHERE NOT (UPP.ACTIVITY = 'SUBSCRIBE' AND UPP.TARGET LIKE '"
                    + IPermission.PORTLET_PREFIX
                    + "%')\n "
                    + "AND NOT (UPP.ACTIVITY = 'BROWSE' AND UPP.TARGET LIKE '"
                    + IPermission.PORTLET_PREFIX
                    + "%')\n ";

    @Required
    public void setDataSource(DataSource dataSource) {
        final JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
        jdbcTemplate.afterPropertiesSet();
        this.jdbcOperations = jdbcTemplate;
    }

    @Override
    public Iterable<? extends IPortalData> apply(IPortalDataType input) {
        return this.jdbcOperations.query(
                QUERY,
                new RowMapper<IPortalData>() {
                    @Override
                    public IPortalData mapRow(ResultSet rs, int rowNum) throws SQLException {
                        final StringBuilder key = new StringBuilder();

                        key.append(rs.getString("OWNER")).append("|");
                        key.append(rs.getString("ENTITY_TYPE_NAME")).append("|");
                        key.append(rs.getString("PRINCIPAL_KEY")).append("|");
                        key.append(rs.getString("ACTIVITY")).append("|");
                        key.append(rs.getString("PRINCIPAL_TYPE"));

                        return new SimpleStringPortalData(key.toString(), null, null);
                    }
                });
    }
}