/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * 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.iotdb.db.mpp.plan.plan;

import org.apache.iotdb.commons.exception.IllegalPathException;
import org.apache.iotdb.commons.path.PartialPath;
import org.apache.iotdb.db.mpp.common.MPPQueryContext;
import org.apache.iotdb.db.mpp.common.QueryId;
import org.apache.iotdb.db.mpp.plan.analyze.Analysis;
import org.apache.iotdb.db.mpp.plan.analyze.Analyzer;
import org.apache.iotdb.db.mpp.plan.analyze.FakePartitionFetcherImpl;
import org.apache.iotdb.db.mpp.plan.analyze.FakeSchemaFetcherImpl;
import org.apache.iotdb.db.mpp.plan.expression.Expression;
import org.apache.iotdb.db.mpp.plan.expression.leaf.TimeSeriesOperand;
import org.apache.iotdb.db.mpp.plan.parser.StatementGenerator;
import org.apache.iotdb.db.mpp.plan.plan.node.PlanNodeDeserializeHelper;
import org.apache.iotdb.db.mpp.plan.planner.LogicalPlanner;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.PlanNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.PlanNodeType;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.metedata.read.DevicesSchemaScanNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.metedata.read.NodeManagementMemoryMergeNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.metedata.read.NodePathsConvertNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.metedata.read.NodePathsCountNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.metedata.read.NodePathsSchemaScanNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.metedata.read.SchemaQueryMergeNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.metedata.read.SchemaQueryOrderByHeatNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.metedata.read.TimeSeriesSchemaScanNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.metedata.write.AlterTimeSeriesNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.metedata.write.CreateAlignedTimeSeriesNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.metedata.write.CreateMultiTimeSeriesNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.metedata.write.CreateTimeSeriesNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.process.GroupByTagNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.process.LimitNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.process.OffsetNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.source.AlignedSeriesAggregationScanNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.node.source.SeriesAggregationScanNode;
import org.apache.iotdb.db.mpp.plan.planner.plan.parameter.AggregationStep;
import org.apache.iotdb.db.mpp.plan.planner.plan.parameter.CrossSeriesAggregationDescriptor;
import org.apache.iotdb.db.mpp.plan.statement.Statement;
import org.apache.iotdb.db.mpp.plan.statement.component.Ordering;
import org.apache.iotdb.db.mpp.plan.statement.metadata.AlterTimeSeriesStatement;
import org.apache.iotdb.db.mpp.plan.statement.metadata.CreateMultiTimeSeriesStatement;
import org.apache.iotdb.db.query.aggregation.AggregationType;
import org.apache.iotdb.service.rpc.thrift.TSCreateMultiTimeseriesReq;
import org.apache.iotdb.tsfile.file.metadata.enums.CompressionType;
import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;
import org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding;

import org.junit.Assert;
import org.junit.Ignore;
import org.junit.Test;

import java.nio.ByteBuffer;
import java.time.ZonedDateTime;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import static org.apache.iotdb.db.mpp.plan.plan.QueryLogicalPlanUtil.querySQLs;
import static org.apache.iotdb.db.mpp.plan.plan.QueryLogicalPlanUtil.sqlToPlanMap;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.fail;

@Ignore
@Deprecated
public class LogicalPlannerTest {

  @Test
  public void testQueryPlan() {
    for (String sql : querySQLs) {
      try {
        Assert.assertEquals(sqlToPlanMap.get(sql), parseSQLToPlanNode(sql));
      } catch (Exception e) {
        System.err.println("Failed to generated logical plan for " + sql);
        e.printStackTrace();
        break;
      }
    }
  }

  @Test
  public void testCreateTimeseriesPlan() {
    String sql =
        "CREATE TIMESERIES root.ln.wf01.wt01.status(状态) BOOLEAN ENCODING=PLAIN COMPRESSOR=SNAPPY "
            + "TAGS('tag1'='v1', 'tag2'='v2') ATTRIBUTES('attr1'='v1', 'attr2'='v2')";
    try {
      CreateTimeSeriesNode createTimeSeriesNode = (CreateTimeSeriesNode) parseSQLToPlanNode(sql);
      Assert.assertNotNull(createTimeSeriesNode);
      Assert.assertEquals(
          new PartialPath("root.ln.wf01.wt01.status"), createTimeSeriesNode.getPath());
      Assert.assertEquals("状态", createTimeSeriesNode.getAlias());
      Assert.assertEquals(TSDataType.BOOLEAN, createTimeSeriesNode.getDataType());
      Assert.assertEquals(TSEncoding.PLAIN, createTimeSeriesNode.getEncoding());
      Assert.assertEquals(CompressionType.SNAPPY, createTimeSeriesNode.getCompressor());
      Assert.assertEquals(
          new HashMap<String, String>() {
            {
              put("tag1", "v1");
              put("tag2", "v2");
            }
          },
          createTimeSeriesNode.getTags());
      Assert.assertEquals(
          new HashMap<String, String>() {
            {
              put("attr1", "v1");
              put("attr2", "v2");
            }
          },
          createTimeSeriesNode.getAttributes());
    } catch (Exception e) {
      e.printStackTrace();
      fail();
    }
  }

  @Test
  public void testCreateAlignedTimeseriesPlan() {
    String sql =
        "CREATE ALIGNED TIMESERIES root.ln.wf01.GPS(latitude(meter1) FLOAT encoding=PLAIN compressor=SNAPPY tags('tag1'='t1') attributes('attr1'='a1'), longitude FLOAT encoding=PLAIN compressor=SNAPPY)";
    try {
      CreateAlignedTimeSeriesNode createAlignedTimeSeriesNode =
          (CreateAlignedTimeSeriesNode) parseSQLToPlanNode(sql);
      Assert.assertNotNull(createAlignedTimeSeriesNode);
      Assert.assertEquals(
          new PartialPath("root.ln.wf01.GPS"), createAlignedTimeSeriesNode.getDevicePath());
      Assert.assertEquals(
          new ArrayList<String>() {
            {
              add("meter1");
              add(null);
            }
          },
          createAlignedTimeSeriesNode.getAliasList());
      Assert.assertEquals(
          new ArrayList<TSDataType>() {
            {
              add(TSDataType.FLOAT);
              add(TSDataType.FLOAT);
            }
          },
          createAlignedTimeSeriesNode.getDataTypes());
      Assert.assertEquals(
          new ArrayList<TSEncoding>() {
            {
              add(TSEncoding.PLAIN);
              add(TSEncoding.PLAIN);
            }
          },
          createAlignedTimeSeriesNode.getEncodings());
      Assert.assertEquals(
          new ArrayList<CompressionType>() {
            {
              add(CompressionType.SNAPPY);
              add(CompressionType.SNAPPY);
            }
          },
          createAlignedTimeSeriesNode.getCompressors());
      Assert.assertEquals(
          new ArrayList<Map<String, String>>() {
            {
              add(
                  new HashMap<String, String>() {
                    {
                      put("attr1", "a1");
                    }
                  });
              add(null);
            }
          },
          createAlignedTimeSeriesNode.getAttributesList());
      Assert.assertEquals(
          new ArrayList<Map<String, String>>() {
            {
              add(
                  new HashMap<String, String>() {
                    {
                      put("tag1", "t1");
                    }
                  });
              add(null);
            }
          },
          createAlignedTimeSeriesNode.getTagsList());

      // Test serialize and deserialize
      ByteBuffer byteBuffer = ByteBuffer.allocate(1000);
      createAlignedTimeSeriesNode.serialize(byteBuffer);
      byteBuffer.flip();

      CreateAlignedTimeSeriesNode createAlignedTimeSeriesNode1 =
          (CreateAlignedTimeSeriesNode) PlanNodeDeserializeHelper.deserialize(byteBuffer);
      Assert.assertTrue(createAlignedTimeSeriesNode.equals(createAlignedTimeSeriesNode1));
    } catch (IllegalPathException e) {
      e.printStackTrace();
      fail();
    }
  }

  @Test
  public void testCreateMultiTimeSeriesPlan() {
    try {
      TSCreateMultiTimeseriesReq req = new TSCreateMultiTimeseriesReq();
      req.setPaths(
          new ArrayList<String>() {
            {
              add("root.sg1.d2.s1");
              add("root.sg1.d2.s2");
            }
          });
      req.setMeasurementAliasList(
          new ArrayList<String>() {
            {
              add("meter1");
              add(null);
            }
          });
      req.setDataTypes(
          new ArrayList<Integer>() {
            {
              add(TSDataType.FLOAT.ordinal());
              add(TSDataType.FLOAT.ordinal());
            }
          });
      req.setEncodings(
          new ArrayList<Integer>() {
            {
              add(TSEncoding.PLAIN.ordinal());
              add(TSEncoding.PLAIN.ordinal());
            }
          });
      req.setCompressors(
          new ArrayList<Integer>() {
            {
              add(CompressionType.SNAPPY.ordinal());
              add(CompressionType.SNAPPY.ordinal());
            }
          });
      req.setAttributesList(
          new ArrayList<Map<String, String>>() {
            {
              add(
                  new HashMap<String, String>() {
                    {
                      put("attr1", "a1");
                    }
                  });
              add(null);
            }
          });
      req.setTagsList(
          new ArrayList<Map<String, String>>() {
            {
              add(
                  new HashMap<String, String>() {
                    {
                      put("tag1", "t1");
                    }
                  });
              add(null);
            }
          });
      CreateMultiTimeSeriesStatement createMultiTimeSeriesStatement =
          (CreateMultiTimeSeriesStatement) StatementGenerator.createStatement(req);
      MPPQueryContext context = new MPPQueryContext(new QueryId("test_query"));
      Analyzer analyzer =
          new Analyzer(context, new FakePartitionFetcherImpl(), new FakeSchemaFetcherImpl());
      Analysis analysis = analyzer.analyze(createMultiTimeSeriesStatement);
      LogicalPlanner planner = new LogicalPlanner(context, new ArrayList<>());
      CreateMultiTimeSeriesNode createMultiTimeSeriesNode =
          (CreateMultiTimeSeriesNode) planner.plan(analysis).getRootNode();
      // Test serialize and deserialize
      ByteBuffer byteBuffer = ByteBuffer.allocate(1000);
      createMultiTimeSeriesNode.serialize(byteBuffer);
      byteBuffer.flip();
      CreateMultiTimeSeriesNode createMultiTimeSeriesNode1 =
          (CreateMultiTimeSeriesNode) PlanNodeDeserializeHelper.deserialize(byteBuffer);
      Assert.assertEquals(createMultiTimeSeriesNode, createMultiTimeSeriesNode1);
    } catch (IllegalPathException e) {
      e.printStackTrace();
      fail();
    }
  }

  @Test
  public void testAlterTimeseriesPlan() {
    String sql = "ALTER timeseries root.turbine.d1.s1 RENAME 'tag1' TO 'newTag1'";
    try {
      AlterTimeSeriesNode alterTimeSeriesNode = (AlterTimeSeriesNode) parseSQLToPlanNode(sql);
      Assert.assertNotNull(alterTimeSeriesNode);
      Assert.assertEquals(new PartialPath("root.turbine.d1.s1"), alterTimeSeriesNode.getPath());
      Assert.assertEquals(
          AlterTimeSeriesStatement.AlterType.RENAME, alterTimeSeriesNode.getAlterType());
      Assert.assertEquals(
          new HashMap<String, String>() {
            {
              put("tag1", "newTag1");
            }
          },
          alterTimeSeriesNode.getAlterMap());

      // Test serialize and deserialize
      ByteBuffer byteBuffer = ByteBuffer.allocate(1000);
      alterTimeSeriesNode.serialize(byteBuffer);
      byteBuffer.flip();

      AlterTimeSeriesNode alterTimeSeriesNode1 =
          (AlterTimeSeriesNode) PlanNodeDeserializeHelper.deserialize(byteBuffer);
      Assert.assertTrue(alterTimeSeriesNode.equals(alterTimeSeriesNode1));
    } catch (IllegalPathException e) {
      e.printStackTrace();
      fail();
    }

    sql = "ALTER timeseries root.turbine.d1.s1 SET 'newTag1'='newV1', 'attr1'='newV1'";
    try {
      AlterTimeSeriesNode alterTimeSeriesNode = (AlterTimeSeriesNode) parseSQLToPlanNode(sql);
      Assert.assertNotNull(alterTimeSeriesNode);
      Assert.assertEquals(new PartialPath("root.turbine.d1.s1"), alterTimeSeriesNode.getPath());
      Assert.assertEquals(
          AlterTimeSeriesStatement.AlterType.SET, alterTimeSeriesNode.getAlterType());
      Assert.assertEquals(
          new HashMap<String, String>() {
            {
              put("newTag1", "newV1");
              put("attr1", "newV1");
            }
          },
          alterTimeSeriesNode.getAlterMap());

      // Test serialize and deserialize
      ByteBuffer byteBuffer = ByteBuffer.allocate(1000);
      alterTimeSeriesNode.serialize(byteBuffer);
      byteBuffer.flip();

      AlterTimeSeriesNode alterTimeSeriesNode1 =
          (AlterTimeSeriesNode) PlanNodeDeserializeHelper.deserialize(byteBuffer);
      Assert.assertTrue(alterTimeSeriesNode.equals(alterTimeSeriesNode1));
    } catch (IllegalPathException e) {
      e.printStackTrace();
      fail();
    }

    sql = "ALTER timeseries root.turbine.d1.s1 DROP 'tag1', 'tag2'";
    try {
      AlterTimeSeriesNode alterTimeSeriesNode = (AlterTimeSeriesNode) parseSQLToPlanNode(sql);
      Assert.assertNotNull(alterTimeSeriesNode);
      Assert.assertEquals(new PartialPath("root.turbine.d1.s1"), alterTimeSeriesNode.getPath());
      Assert.assertEquals(
          AlterTimeSeriesStatement.AlterType.DROP, alterTimeSeriesNode.getAlterType());
      Assert.assertEquals(
          new HashMap<String, String>() {
            {
              put("tag1", null);
              put("tag2", null);
            }
          },
          alterTimeSeriesNode.getAlterMap());

      // Test serialize and deserialize
      ByteBuffer byteBuffer = ByteBuffer.allocate(1000);
      alterTimeSeriesNode.serialize(byteBuffer);
      byteBuffer.flip();

      AlterTimeSeriesNode alterTimeSeriesNode1 =
          (AlterTimeSeriesNode) PlanNodeDeserializeHelper.deserialize(byteBuffer);
      Assert.assertTrue(alterTimeSeriesNode.equals(alterTimeSeriesNode1));
    } catch (IllegalPathException e) {
      e.printStackTrace();
      fail();
    }

    sql = "ALTER timeseries root.turbine.d1.s1 ADD TAGS 'tag3'='v3', 'tag4'='v4'";
    try {
      AlterTimeSeriesNode alterTimeSeriesNode = (AlterTimeSeriesNode) parseSQLToPlanNode(sql);
      Assert.assertNotNull(alterTimeSeriesNode);
      Assert.assertEquals(new PartialPath("root.turbine.d1.s1"), alterTimeSeriesNode.getPath());
      Assert.assertEquals(
          AlterTimeSeriesStatement.AlterType.ADD_TAGS, alterTimeSeriesNode.getAlterType());
      Assert.assertEquals(
          new HashMap<String, String>() {
            {
              put("tag3", "v3");
              put("tag4", "v4");
            }
          },
          alterTimeSeriesNode.getAlterMap());

      // Test serialize and deserialize
      ByteBuffer byteBuffer = ByteBuffer.allocate(1000);
      alterTimeSeriesNode.serialize(byteBuffer);
      byteBuffer.flip();

      AlterTimeSeriesNode alterTimeSeriesNode1 =
          (AlterTimeSeriesNode) PlanNodeDeserializeHelper.deserialize(byteBuffer);
      Assert.assertTrue(alterTimeSeriesNode.equals(alterTimeSeriesNode1));
    } catch (IllegalPathException e) {
      e.printStackTrace();
      fail();
    }

    sql = "ALTER timeseries root.turbine.d1.s1 ADD ATTRIBUTES 'attr3'='v3', 'attr4'='v4'";
    try {
      AlterTimeSeriesNode alterTimeSeriesNode = (AlterTimeSeriesNode) parseSQLToPlanNode(sql);
      Assert.assertNotNull(alterTimeSeriesNode);
      Assert.assertEquals(new PartialPath("root.turbine.d1.s1"), alterTimeSeriesNode.getPath());
      Assert.assertEquals(
          AlterTimeSeriesStatement.AlterType.ADD_ATTRIBUTES, alterTimeSeriesNode.getAlterType());
      Assert.assertEquals(
          new HashMap<String, String>() {
            {
              put("attr3", "v3");
              put("attr4", "v4");
            }
          },
          alterTimeSeriesNode.getAlterMap());

      // Test serialize and deserialize
      ByteBuffer byteBuffer = ByteBuffer.allocate(1000);
      alterTimeSeriesNode.serialize(byteBuffer);
      byteBuffer.flip();

      AlterTimeSeriesNode alterTimeSeriesNode1 =
          (AlterTimeSeriesNode) PlanNodeDeserializeHelper.deserialize(byteBuffer);
      Assert.assertTrue(alterTimeSeriesNode.equals(alterTimeSeriesNode1));
    } catch (IllegalPathException e) {
      e.printStackTrace();
      fail();
    }

    sql =
        "ALTER timeseries root.turbine.d1.s1 UPSERT ALIAS='newAlias' "
            + "TAGS('tag2'='newV2', 'tag3'='v3') ATTRIBUTES('attr3'='v3', 'attr4'='v4')";
    try {
      AlterTimeSeriesNode alterTimeSeriesNode = (AlterTimeSeriesNode) parseSQLToPlanNode(sql);
      Assert.assertNotNull(alterTimeSeriesNode);
      Assert.assertEquals(new PartialPath("root.turbine.d1.s1"), alterTimeSeriesNode.getPath());
      Assert.assertEquals(
          AlterTimeSeriesStatement.AlterType.UPSERT, alterTimeSeriesNode.getAlterType());
      Assert.assertEquals(
          new HashMap<String, String>() {
            {
              put("tag2", "newV2");
              put("tag3", "v3");
            }
          },
          alterTimeSeriesNode.getTagsMap());
      Assert.assertEquals(
          new HashMap<String, String>() {
            {
              put("attr3", "v3");
              put("attr4", "v4");
            }
          },
          alterTimeSeriesNode.getAttributesMap());

      // Test serialize and deserialize
      ByteBuffer byteBuffer = ByteBuffer.allocate(1000);
      alterTimeSeriesNode.serialize(byteBuffer);
      byteBuffer.flip();

      AlterTimeSeriesNode alterTimeSeriesNode1 =
          (AlterTimeSeriesNode) PlanNodeDeserializeHelper.deserialize(byteBuffer);
      Assert.assertTrue(alterTimeSeriesNode.equals(alterTimeSeriesNode1));
    } catch (IllegalPathException e) {
      e.printStackTrace();
      fail();
    }
  }

  @Test
  public void testShowTimeSeries() {
    String sql =
        "SHOW LATEST TIMESERIES root.ln.wf01.wt01.status WHERE 'tagK' = 'tagV' limit 20 offset 10";

    try {
      LimitNode limitNode = (LimitNode) parseSQLToPlanNode(sql);
      OffsetNode offsetNode = (OffsetNode) limitNode.getChild();
      SchemaQueryOrderByHeatNode schemaQueryOrderByHeatNode =
          (SchemaQueryOrderByHeatNode) offsetNode.getChild();
      SchemaQueryMergeNode metaMergeNode =
          (SchemaQueryMergeNode) schemaQueryOrderByHeatNode.getChildren().get(0);
      metaMergeNode.getChildren().forEach(n -> System.out.println(n.toString()));
      TimeSeriesSchemaScanNode showTimeSeriesNode =
          (TimeSeriesSchemaScanNode) metaMergeNode.getChildren().get(0);
      Assert.assertNotNull(showTimeSeriesNode);
      Assert.assertEquals(
          new PartialPath("root.ln.wf01.wt01.status"), showTimeSeriesNode.getPath());
      Assert.assertEquals("root.ln.wf01.wt01", showTimeSeriesNode.getPath().getDevice());
      Assert.assertTrue(showTimeSeriesNode.isOrderByHeat());
      Assert.assertFalse(showTimeSeriesNode.isContains());
      Assert.assertEquals("tagK", showTimeSeriesNode.getKey());
      Assert.assertEquals("tagV", showTimeSeriesNode.getValue());
      Assert.assertEquals(0, showTimeSeriesNode.getLimit());
      Assert.assertEquals(0, showTimeSeriesNode.getOffset());
      Assert.assertFalse(showTimeSeriesNode.isHasLimit());

      // test serialize and deserialize
      ByteBuffer byteBuffer = ByteBuffer.allocate(1024);
      showTimeSeriesNode.serialize(byteBuffer);
      byteBuffer.flip();
      TimeSeriesSchemaScanNode showTimeSeriesNode2 =
          (TimeSeriesSchemaScanNode) PlanNodeType.deserialize(byteBuffer);
      Assert.assertNotNull(showTimeSeriesNode2);
      Assert.assertEquals(
          new PartialPath("root.ln.wf01.wt01.status"), showTimeSeriesNode2.getPath());
      Assert.assertEquals("root.ln.wf01.wt01", showTimeSeriesNode2.getPath().getDevice());
      Assert.assertTrue(showTimeSeriesNode2.isOrderByHeat());
      Assert.assertFalse(showTimeSeriesNode2.isContains());
      Assert.assertEquals("tagK", showTimeSeriesNode2.getKey());
      Assert.assertEquals("tagV", showTimeSeriesNode2.getValue());
      Assert.assertEquals(0, showTimeSeriesNode2.getLimit());
      Assert.assertEquals(0, showTimeSeriesNode2.getOffset());
      Assert.assertFalse(showTimeSeriesNode2.isHasLimit());
    } catch (Exception e) {
      e.printStackTrace();
      fail();
    }
  }

  @Test
  public void testShowDevices() {
    String sql = "SHOW DEVICES root.ln.wf01.wt01 WITH DATABASE limit 20 offset 10";
    try {
      LimitNode limitNode = (LimitNode) parseSQLToPlanNode(sql);
      OffsetNode offsetNode = (OffsetNode) limitNode.getChild();
      SchemaQueryMergeNode metaMergeNode = (SchemaQueryMergeNode) offsetNode.getChild();
      DevicesSchemaScanNode showDevicesNode =
          (DevicesSchemaScanNode) metaMergeNode.getChildren().get(0);
      Assert.assertNotNull(showDevicesNode);
      Assert.assertEquals(new PartialPath("root.ln.wf01.wt01"), showDevicesNode.getPath());
      Assert.assertTrue(showDevicesNode.isHasSgCol());
      Assert.assertEquals(30, showDevicesNode.getLimit());
      Assert.assertEquals(0, showDevicesNode.getOffset());
      Assert.assertTrue(showDevicesNode.isHasLimit());

      // test serialize and deserialize
      ByteBuffer byteBuffer = ByteBuffer.allocate(1024);
      showDevicesNode.serialize(byteBuffer);
      byteBuffer.flip();
      DevicesSchemaScanNode showDevicesNode2 =
          (DevicesSchemaScanNode) PlanNodeType.deserialize(byteBuffer);
      Assert.assertNotNull(showDevicesNode2);
      Assert.assertEquals(new PartialPath("root.ln.wf01.wt01"), showDevicesNode2.getPath());
      Assert.assertEquals(30, showDevicesNode2.getLimit());
      Assert.assertEquals(0, showDevicesNode2.getOffset());
      Assert.assertTrue(showDevicesNode2.isHasLimit());
    } catch (Exception e) {
      e.printStackTrace();
      fail();
    }
  }

  @Test
  public void testCountNodes() {
    String sql = "COUNT NODES root.ln LEVEL=1";
    try {
      NodePathsCountNode nodePathsCountNode = (NodePathsCountNode) parseSQLToPlanNode(sql);
      NodeManagementMemoryMergeNode nodeManagementMemoryMergeNode =
          (NodeManagementMemoryMergeNode) nodePathsCountNode.getChildren().get(0);
      SchemaQueryMergeNode schemaQueryMergeNode =
          (SchemaQueryMergeNode) nodeManagementMemoryMergeNode.getChildren().get(0);
      NodePathsSchemaScanNode nodePathsSchemaScanNode =
          (NodePathsSchemaScanNode) schemaQueryMergeNode.getChildren().get(0);
      Assert.assertNotNull(nodePathsSchemaScanNode);
      Assert.assertEquals(new PartialPath("root.ln"), nodePathsSchemaScanNode.getPrefixPath());
      Assert.assertEquals(1, nodePathsSchemaScanNode.getLevel());
    } catch (Exception e) {
      e.printStackTrace();
      fail();
    }
  }

  @Test
  public void testShowChildPaths() {
    String sql = "SHOW CHILD PATHS root.ln";
    try {
      NodeManagementMemoryMergeNode memorySourceNode =
          (NodeManagementMemoryMergeNode) parseSQLToPlanNode(sql);
      SchemaQueryMergeNode schemaQueryMergeNode =
          (SchemaQueryMergeNode) memorySourceNode.getChildren().get(0);
      NodePathsSchemaScanNode nodePathsSchemaScanNode =
          (NodePathsSchemaScanNode) schemaQueryMergeNode.getChildren().get(0);
      Assert.assertNotNull(nodePathsSchemaScanNode);
      Assert.assertEquals(new PartialPath("root.ln"), nodePathsSchemaScanNode.getPrefixPath());
    } catch (Exception e) {
      e.printStackTrace();
      fail();
    }
  }

  @Test
  public void testShowChildNodes() {
    String sql = "SHOW CHILD NODES root.ln";
    try {
      NodePathsConvertNode nodePathsConvertNode = (NodePathsConvertNode) parseSQLToPlanNode(sql);
      NodeManagementMemoryMergeNode memorySourceNode =
          (NodeManagementMemoryMergeNode) nodePathsConvertNode.getChildren().get(0);
      SchemaQueryMergeNode schemaQueryMergeNode =
          (SchemaQueryMergeNode) memorySourceNode.getChildren().get(0);
      NodePathsSchemaScanNode nodePathsSchemaScanNode =
          (NodePathsSchemaScanNode) schemaQueryMergeNode.getChildren().get(0);
      assertNotNull(nodePathsConvertNode);
      Assert.assertEquals(new PartialPath("root.ln"), nodePathsSchemaScanNode.getPrefixPath());
    } catch (Exception e) {
      e.printStackTrace();
      fail();
    }
  }

  @Test
  public void testGroupByTag() {
    String sql = "select max_value(s1) from root.** group by tags(key1)";
    try {
      PlanNode pn = parseSQLToPlanNode(sql);
      GroupByTagNode root = (GroupByTagNode) pn;

      Assert.assertEquals(Collections.singletonList("key1"), root.getTagKeys());

      Map<List<String>, List<CrossSeriesAggregationDescriptor>> tagValuesToAggregationDescriptors =
          root.getTagValuesToAggregationDescriptors();
      Assert.assertEquals(1, tagValuesToAggregationDescriptors.size());
      Assert.assertEquals(
          Collections.singleton(Collections.singletonList("value1")),
          tagValuesToAggregationDescriptors.keySet());
      List<CrossSeriesAggregationDescriptor> descriptors =
          tagValuesToAggregationDescriptors.get(Collections.singletonList("value1"));
      Assert.assertEquals(1, descriptors.size());
      CrossSeriesAggregationDescriptor descriptor = descriptors.get(0);
      Assert.assertEquals("s1", descriptor.getOutputExpression().toString());
      Assert.assertEquals(AggregationType.MAX_VALUE, descriptor.getAggregationType());
      Assert.assertEquals(AggregationStep.FINAL, descriptor.getStep());
      Assert.assertEquals(3, descriptor.getInputExpressions().size());
      for (Expression expression : descriptor.getInputExpressions()) {
        Assert.assertTrue(expression instanceof TimeSeriesOperand);
        Assert.assertEquals("s1", ((TimeSeriesOperand) expression).getPath().getMeasurement());
      }

      Assert.assertEquals(Arrays.asList("key1", "max_value(s1)"), root.getOutputColumnNames());

      Assert.assertNull(root.getGroupByTimeParameter());

      Assert.assertEquals(Ordering.ASC, root.getScanOrder());

      Assert.assertEquals(3, root.getChildren().size());
      for (PlanNode child : root.getChildren()) {
        Assert.assertTrue(
            child instanceof AlignedSeriesAggregationScanNode
                || child instanceof SeriesAggregationScanNode);
      }
    } catch (Exception e) {
      e.printStackTrace();
      fail();
    }
  }

  @Test
  public void testGroupByTagWithValueFilter() {
    String sql = "select max_value(s1) from root.** where s1>1 group by tags(key1)";
    try {
      parseSQLToPlanNode(sql);
      fail();
    } catch (Exception e) {
      Assert.assertTrue(
          e.getMessage().contains("Only time filters are supported in GROUP BY TAGS query"));
    }
  }

  @Test
  public void testGroupByTagWithIllegalSpecialLimitClause() {
    String[] inputSql =
        new String[] {
          "select max_value(s1) from root.** group by tags(key1) disable align",
          "select max_value(s1) from root.** group by tags(key1) align by device",
          "select max_value(s1) from root.** group by tags(key1) without null any",
          "select max_value(s1) from root.** group by tags(key1) limit 1",
          "select max_value(s1) from root.** group by([0, 10000), 5ms), tags(key1) limit 1 offset 1 slimit 1 soffset 1"
        };
    String[] expectedMsg =
        new String[] {
          "AGGREGATION doesn't support disable align clause",
          "GROUP BY TAGS does not support align by device now",
          "WITHOUT NULL clause is not supported yet",
          "Limit or slimit are not supported yet in GROUP BY TAGS",
          "Limit or slimit are not supported yet in GROUP BY TAGS",
        };
    for (int i = 0; i < inputSql.length; i++) {
      try {
        parseSQLToPlanNode(inputSql[i]);
        fail();
      } catch (Exception e) {
        Assert.assertTrue(inputSql[i], e.getMessage().contains(expectedMsg[i]));
      }
    }
  }

  @Test
  public void testGroupByTagWithDuplicatedAliasWithTagKey() {
    String sql = "select max_value(s1) as key1 from root.** group by tags(key1)";
    try {
      parseSQLToPlanNode(sql);
      fail();
    } catch (Exception e) {
      Assert.assertTrue(
          e.getMessage().contains("Output column is duplicated with the tag key: key1"));
    }
  }

  private PlanNode parseSQLToPlanNode(String sql) {
    Statement statement = StatementGenerator.createStatement(sql, ZonedDateTime.now().getOffset());
    MPPQueryContext context = new MPPQueryContext(new QueryId("test_query"));
    Analyzer analyzer =
        new Analyzer(context, new FakePartitionFetcherImpl(), new FakeSchemaFetcherImpl());
    Analysis analysis = analyzer.analyze(statement);
    LogicalPlanner planner = new LogicalPlanner(context, new ArrayList<>());
    return planner.plan(analysis).getRootNode();
  }
}
