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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
//
// Unless required by applicable law or agreed to in writing,
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package org.apache.doris.analysis;

import org.apache.doris.catalog.ScalarType;
import org.apache.doris.common.AnalysisException;
import org.apache.doris.mysql.privilege.AccessControllerManager;
import org.apache.doris.mysql.privilege.PrivPredicate;
import org.apache.doris.qe.ConnectContext;
import org.apache.doris.qe.SessionVariable;
import org.apache.doris.qe.ShowResultSetMetaData;

import mockit.Mock;
import mockit.MockUp;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.jupiter.api.Assertions;

import java.util.concurrent.atomic.AtomicBoolean;

public class ShowBackendsStmtTest {
    private Analyzer analyzer;
    private ConnectContext ctx = new ConnectContext();

    @Before
    public void setUp() {
        analyzer = AccessTestUtil.fetchAdminAnalyzer(true);
        ctx.setSessionVariable(new SessionVariable());
        ctx.setThreadLocalInfo();
    }

    @After
    public void tearDown() {
        ConnectContext.remove();
    }

    @Test
    public void testAnalyze() throws Exception {
        AtomicBoolean privilege = new AtomicBoolean(false);
        new MockUp<AccessControllerManager>() {
            @Mock
            public boolean checkGlobalPriv(ConnectContext ctx, PrivPredicate wanted) {
                return privilege.get();
            }
        };

        ShowBackendsStmt stmt = new ShowBackendsStmt();
        Assertions.assertThrows(AnalysisException.class, () -> stmt.analyze(analyzer));

        privilege.set(true);
        stmt.analyze(analyzer);
    }

    @Test
    public void getMetaData() {
        ShowBackendsStmt stmt = new ShowBackendsStmt();
        ShowResultSetMetaData result = stmt.getMetaData();
        Assertions.assertEquals(result.getColumnCount(), 27);
        result.getColumns().forEach(col -> Assertions.assertEquals(col.getType(), ScalarType.createVarchar(30)));
    }

    @Test
    public void getRedirectStatus() {
        ShowBackendsStmt stmt = new ShowBackendsStmt();
        Assertions.assertEquals(RedirectStatus.FORWARD_NO_SYNC, stmt.getRedirectStatus());

        ctx.getSessionVariable().forwardToMaster = false;
        Assertions.assertEquals(RedirectStatus.NO_FORWARD, stmt.getRedirectStatus());
    }
}