/*-
 * #%L
 * JSQLParser library
 * %%
 * Copyright (C) 2004 - 2021 JSQLParser
 * %%
 * Dual licensed under GNU LGPL 2.1 or Apache License 2.0
 * #L%
 */
package net.sf.jsqlparser.statement.alter;

import java.util.List;
import net.sf.jsqlparser.JSQLParserException;
import net.sf.jsqlparser.parser.CCJSqlParserUtil;
import net.sf.jsqlparser.schema.Table;
import net.sf.jsqlparser.statement.Statement;
import net.sf.jsqlparser.statement.StatementVisitorAdapter;
import net.sf.jsqlparser.test.TestUtils;
import net.sf.jsqlparser.util.TablesNamesFinder;
import net.sf.jsqlparser.util.validation.ValidationTestAsserts;
import net.sf.jsqlparser.util.validation.feature.DatabaseType;
import net.sf.jsqlparser.util.validation.validator.ExpressionValidator;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;
import org.junit.jupiter.api.Test;

/**
 *
 * @author <a href="mailto:andreas@manticore-projects.com">Andreas Reichel</a>
 */
public class RenameTableStatementTest {

    /**
     * This test will parse and deparse the statement and assures the functional coverage by JSQLParser.
     *
     * @throws net.sf.jsqlparser.JSQLParserException
     */
    @Test
    public void testStatement() throws JSQLParserException {
        String sqlStr = "RENAME oldTableName TO newTableName";
        TestUtils.assertSqlCanBeParsedAndDeparsed(sqlStr, true);

        sqlStr = "RENAME TABLE old_table TO backup_table, new_table TO old_table";
        TestUtils.assertSqlCanBeParsedAndDeparsed(sqlStr, true);

        sqlStr = "RENAME TABLE IF EXISTS old_table WAIT 20 TO backup_table, new_table TO old_table";
        TestUtils.assertSqlCanBeParsedAndDeparsed(sqlStr, true);

        sqlStr = "RENAME TABLE IF EXISTS old_table NOWAIT TO backup_table, new_table TO old_table";
        TestUtils.assertSqlCanBeParsedAndDeparsed(sqlStr, true);
    }

    /**
     * This test will trigger the method {@link StatementVisitorAdaptor#visit() Visit Method} in the
     * StatementVisitorAdaptor needed for the Code Coverage.
     *
     * @throws net.sf.jsqlparser.JSQLParserException
     */
    @Test
    public void testStatementVisitorAdaptor() throws JSQLParserException {
        String sqlStr = "RENAME oldTableName TO newTableName";

        CCJSqlParserUtil.parse(sqlStr).accept(new StatementVisitorAdapter());
    }

    /**
     * This test will trigger the method {@link TableNamesFinder#visit() Visit Method} in the TableNamesFinder needed
     * for the Code Coverage.
     *
     * @throws net.sf.jsqlparser.JSQLParserException
     */
    @Test
    public void testTableNamesFinder() throws JSQLParserException {
        String sqlStr = "RENAME oldTableName TO newTableName";

        Statement statement = CCJSqlParserUtil.parse(sqlStr);
        List<String> tables = new TablesNamesFinder().getTableList(statement);
        assertEquals(2, tables.size());
        assertTrue(tables.contains("oldTableName"));
        assertTrue(tables.contains("newTableName"));
    }

    /**
     * This test will trigger the method {@link ExpressionValidator#visit() Visit Method} in the ExpressionValidator
     * needed for the Code Coverage.
     *
     * @throws net.sf.jsqlparser.JSQLParserException
     */
    @Test
    public void testValidator() throws JSQLParserException {
        String sqlStr = "RENAME oldTableName TO newTableName";
        TestUtils.assertSqlCanBeParsedAndDeparsed(sqlStr, true);

        // this needs to succeed
        ValidationTestAsserts.validateNoErrors(sqlStr, 1, DatabaseType.ORACLE);

        // this should fail when not supported in Postgres
        ValidationTestAsserts.validateNoErrors(sqlStr, 1, DatabaseType.POSTGRESQL);

        sqlStr = "ALTER TABLE public.oldTableName RENAME TO newTableName";
        TestUtils.assertSqlCanBeParsedAndDeparsed(sqlStr, true);

        // this needs to succeed according to: https://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_3001.htm
        ValidationTestAsserts.validateNoErrors(sqlStr, 1, DatabaseType.ORACLE);

        // this needs to succeed
        ValidationTestAsserts.validateNoErrors(sqlStr, 1, DatabaseType.POSTGRESQL);

        sqlStr = "ALTER TABLE IF EXISTS public.oldTableName RENAME TO newTableName";
        TestUtils.assertSqlCanBeParsedAndDeparsed(sqlStr, true);

        //  should fail when IF EXISTS is not supported in Oracle 11
        ValidationTestAsserts.validateNoErrors(sqlStr, 1, DatabaseType.ORACLE);

        // this needs to succeed
        ValidationTestAsserts.validateNoErrors(sqlStr, 1, DatabaseType.POSTGRESQL);
    }

    @Test
    public void testObjectAccess() {
        Table oldTable = new Table("oldTableName");
        Table newTable = new Table("newTableName");

        RenameTableStatement renameTableStatement = new RenameTableStatement(oldTable, newTable);
        renameTableStatement.withUsingTableKeyword(true).setUsingTableKeyword(false);
        renameTableStatement.withUsingIfExistsKeyword(true).setUsingIfExistsKeyword(false);
        renameTableStatement.withWaitDirective("NOWAIT").setWaitDirective("WAIT 20");

        assertFalse(renameTableStatement.isTableNamesEmpty());
        assertTrue(renameTableStatement.getTableNamesSize() > 0);
        assertFalse(renameTableStatement.isUsingTableKeyword());
        assertFalse(renameTableStatement.isUsingIfExistsKeyword());
        assertEquals("WAIT 20", renameTableStatement.getWaitDirective());
    }
}
