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// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF 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
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// 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.apache.doris.analysis;

import org.apache.doris.catalog.Column;
import org.apache.doris.catalog.ScalarType;
import org.apache.doris.cluster.ClusterNamespace;
import org.apache.doris.common.AnalysisException;
import org.apache.doris.common.ErrorCode;
import org.apache.doris.common.ErrorReport;
import org.apache.doris.common.UserException;
import org.apache.doris.common.proc.DeleteInfoProcDir;
import org.apache.doris.qe.ShowResultSetMetaData;

import com.google.common.base.Strings;

public class ShowDeleteStmt extends ShowStmt {

    private String dbName;

    public ShowDeleteStmt(String dbName) {
        this.dbName = dbName;
    }

    public String getDbName() {
        return dbName;
    }

    @Override
    public void analyze(Analyzer analyzer) throws AnalysisException, UserException {
        super.analyze(analyzer);

        if (Strings.isNullOrEmpty(dbName)) {
            dbName = analyzer.getDefaultDb();
            if (Strings.isNullOrEmpty(dbName)) {
                ErrorReport.reportAnalysisException(ErrorCode.ERR_NO_DB_ERROR);
            }
        } else {
            dbName = ClusterNamespace.getFullName(getClusterName(), dbName);
        }
    }

    @Override
    public ShowResultSetMetaData getMetaData() {
        ShowResultSetMetaData.Builder builder = ShowResultSetMetaData.builder();
        for (String title : DeleteInfoProcDir.TITLE_NAMES_FOR_USER) {
            builder.addColumn(new Column(title, ScalarType.createVarchar(30)));
        }
        return builder.build();
    }

    @Override
    public String toSql() {
        StringBuilder sb = new StringBuilder();
        sb.append("SHOW DELETE ");
        if (!Strings.isNullOrEmpty(dbName)) {
            sb.append("FROM `").append(dbName).append("`");
        }

        return sb.toString();
    }

    @Override
    public String toString() {
        return toSql();
    }

}
