/*
 * Copyright Amazon.com, Inc. or its affiliates. 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.
 * A copy of the License is located at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * or in the "license" file accompanying this file. This file 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 software.aws.neptune.gremlin.adapter;

import com.google.common.collect.ImmutableList;
import org.junit.jupiter.api.Test;
import software.aws.neptune.gremlin.adapter.graphs.GraphConstants;

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

public class GremlinSqlBasicSelectTest extends GremlinSqlBaseTest {

    GremlinSqlBasicSelectTest() throws SQLException {
    }

    @Override
    protected DataSet getDataSet() {
        return DataSet.DATA_TYPES;
    }

    @Test
    void testStringQuery() throws SQLException {
        runQueryTestResults("SELECT \"key\" FROM stringtype", columns("key"), rows(r(GraphConstants.STRING_VALUE)));
    }

    @Test
    void testByteQuery() throws SQLException {
        runQueryTestResults("SELECT \"key\" FROM bytetype", columns("key"), rows(r(GraphConstants.BYTE_VALUE)));
    }

    @Test
    void testShortQuery() throws SQLException {
        runQueryTestResults("SELECT \"key\" FROM shorttype", columns("key"), rows(r(GraphConstants.SHORT_VALUE)));
    }

    @Test
    void testIntegerQuery() throws SQLException {
        runQueryTestResults("SELECT \"key\" FROM inttype", columns("key"), rows(r(GraphConstants.INTEGER_VALUE)));
    }

    @Test
    void testLongQuery() throws SQLException {
        runQueryTestResults("SELECT \"key\" FROM longtype", columns("key"), rows(r(GraphConstants.LONG_VALUE)));
    }

    @Test
    void testFloatQuery() throws SQLException {
        runQueryTestResults("SELECT \"key\" FROM floattype", columns("key"), rows(r(GraphConstants.FLOAT_VALUE)));
    }

    @Test
    void testDoubleQuery() throws SQLException {
        runQueryTestResults("SELECT \"key\" FROM doubletype", columns("key"), rows(r(GraphConstants.DOUBLE_VALUE)));
    }

    @Test
    void testDateQuery() throws SQLException {
        runQueryTestResults("SELECT \"key\" FROM datetype", columns("key"), rows(r(GraphConstants.DATE_VALUE)));
    }

    @Test
    void testEdgeQueries() throws SQLException {
        runQueryTestResults("SELECT key FROM stringtypeedge", columns("key"), rows(r(GraphConstants.STRING_VALUE)));
        runQueryTestResults("SELECT * FROM stringtypeedge",
                columns("stringtype_IN_ID", "stringtypeedge_ID", "stringtype_OUT_ID", "key"),
                rows(r(0L, 16L, 0L, GraphConstants.STRING_VALUE)));
    }

    String getAsOperatorQuery(final String column, final String asColumn, final String table) {
        return String.format("SELECT %s AS %s FROM %s", column, asColumn, table);
    }

    String getAsOperatorQuery(final String column, final String asColumn, final String table, final String asTable) {
        return String.format("SELECT %s.%s AS %s FROM %s %s", asTable, column, asColumn, table, asTable);
    }

    @Test
    void testAsOperator() throws SQLException {
        final List<String> columns = ImmutableList.of("key", "\"key\"");
        final List<String> asColumns = ImmutableList.of("key", "\"key\"", "k", "\"k\"");
        final List<String> tables = ImmutableList.of("stringtype", "\"stringtype\"");
        final List<String> asTables = ImmutableList.of("st", "\"st\"");
        for (final String column : columns) {
            for (final String asColumn : asColumns) {
                for (final String table : tables) {
                    runQueryTestResults(getAsOperatorQuery(column, asColumn, table),
                            columns(asColumn.replace("\"", "")), rows(r(GraphConstants.STRING_VALUE)));
                    for (final String asTable : asTables) {
                        runQueryTestResults(getAsOperatorQuery(column, asColumn, table, asTable),
                                columns(asColumn.replace("\"", "")), rows(r(GraphConstants.STRING_VALUE)));
                    }
                }
            }
        }
    }
}