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// 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
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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package org.apache.doris.analysis;

import org.apache.doris.catalog.Env;
import org.apache.doris.common.AnalysisException;
import org.apache.doris.common.ErrorCode;
import org.apache.doris.common.ErrorReport;
import org.apache.doris.common.FeNameFormat;
import org.apache.doris.common.UserException;
import org.apache.doris.common.util.Util;
import org.apache.doris.datasource.InternalCatalog;
import org.apache.doris.mysql.privilege.PrivPredicate;
import org.apache.doris.qe.ConnectContext;

import com.google.common.base.Strings;

/**
 * Statement for alter the catalog name.
 */
public class AlterCatalogNameStmt extends DdlStmt {
    private final String catalogName;
    private final String newCatalogName;

    public AlterCatalogNameStmt(String catalogName, String newCatalogName) {
        this.catalogName = catalogName;
        this.newCatalogName = newCatalogName;
    }

    public String getCatalogName() {
        return catalogName;
    }

    public String getNewCatalogName() {
        return newCatalogName;
    }

    @Override
    public void analyze(Analyzer analyzer) throws UserException {
        super.analyze(analyzer);
        Util.checkCatalogAllRules(catalogName);

        if (catalogName.equals(InternalCatalog.INTERNAL_CATALOG_NAME)) {
            throw new AnalysisException("Internal catalog can't be alter.");
        }

        if (!Env.getCurrentEnv().getAccessManager().checkCtlPriv(
                ConnectContext.get(), catalogName, PrivPredicate.ALTER)) {
            ErrorReport.reportAnalysisException(ErrorCode.ERR_CATALOG_ACCESS_DENIED,
                    analyzer.getQualifiedUser(), catalogName);
        }

        if (Strings.isNullOrEmpty(newCatalogName)) {
            throw new AnalysisException("New catalog name is not set");
        }
        if (newCatalogName.equals(InternalCatalog.INTERNAL_CATALOG_NAME)) {
            throw new AnalysisException("Cannot alter a catalog into a build-in name.");
        }
        FeNameFormat.checkCommonName("catalog", newCatalogName);
    }

    @Override
    public String toSql() {
        return "ALTER CATALOG " + catalogName + " RENAME " + newCatalogName;
    }
}
