/*
 * 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.carbondata.spark.testsuite.datacompaction

import scala.collection.JavaConverters._

import org.apache.spark.sql.Row
import org.apache.spark.sql.test.util.QueryTest
import org.scalatest.BeforeAndAfterAll

import org.apache.carbondata.core.constants.CarbonCommonConstants
import org.apache.carbondata.core.metadata.{AbsoluteTableIdentifier, CarbonTableIdentifier}
import org.apache.carbondata.core.statusmanager.SegmentStatusManager
import org.apache.carbondata.core.util.CarbonProperties

/**
 * FT for data compaction scenario.
 */
class DataCompactionCardinalityBoundryTest extends QueryTest with BeforeAndAfterAll {

  override def beforeAll {
    CarbonProperties.getInstance().addProperty(CarbonCommonConstants.ENABLE_AUTO_LOAD_MERGE, "true")
    sql("drop table if exists  cardinalityTest")
    CarbonProperties.getInstance()
      .addProperty(CarbonCommonConstants.CARBON_TIMESTAMP_FORMAT, "mm/dd/yyyy")
    sql("CREATE TABLE IF NOT EXISTS cardinalityTest (country String, ID String, date Timestamp, " +
        "name String, phonetype String, serialname String, salary Int) STORED AS carbondata"
    )


    val csvFilePath1 = s"$resourcesPath/compaction/compaction1.csv"

    // loading the rows greater than 256. so that the column cardinality crosses byte boundary.
    val csvFilePath2 = s"$resourcesPath/compaction/compactioncard2.csv"

    val csvFilePath3 = s"$resourcesPath/compaction/compaction3.csv"


    sql("LOAD DATA LOCAL INPATH '" + csvFilePath1 + "' INTO TABLE cardinalityTest OPTIONS" +
        "('DELIMITER'= ',', 'QUOTECHAR'= '\"')"
    )
    sql("LOAD DATA LOCAL INPATH '" + csvFilePath2 + "' INTO TABLE cardinalityTest  OPTIONS" +
        "('DELIMITER'= ',', 'QUOTECHAR'= '\"')"
    )
    // compaction will happen here.
    sql("LOAD DATA LOCAL INPATH '" + csvFilePath3 + "' INTO TABLE cardinalityTest  OPTIONS" +
        "('DELIMITER'= ',', 'QUOTECHAR'= '\"')"
    )
    // compaction will happen here.
    sql("alter table cardinalityTest compact 'major'"
    )

  }

  test("check if compaction is completed or not and  verify select query.") {
    var status = true
    var noOfRetries = 0
    while (status && noOfRetries < 10) {
      val segmentStatusManager: SegmentStatusManager = new SegmentStatusManager(
        AbsoluteTableIdentifier.from(
          CarbonProperties.getStorePath(),
          new CarbonTableIdentifier("default", "cardinalityTest", "1")
        )
      )
      val segments = segmentStatusManager.getValidAndInvalidSegments.getValidSegments.asScala.toList

      if (!segments.contains("0.1")) {
        // wait for 2 seconds for compaction to complete.
        Thread.sleep(500)
        noOfRetries += 1
      }
      else {
        status = false
      }
    }
    // now check the answers it should be same.
    checkAnswer(
      sql("select country,count(*) from cardinalityTest group by country"),
      Seq(Row("america", 1),
        Row("canada", 1),
        Row("chile", 1),
        Row("china", 2),
        Row("england", 1),
        Row("burma", 152),
        Row("butan", 101),
        Row("mexico", 1),
        Row("newzealand", 1),
        Row("westindies", 1),
        Row("india", 1),
        Row("iran", 1),
        Row("iraq", 1),
        Row("ireland", 1)
      )
    )
  }


  override def afterAll {
    CarbonProperties.getInstance()
      .addProperty(CarbonCommonConstants.CARBON_TIMESTAMP_FORMAT,
        CarbonCommonConstants.CARBON_TIMESTAMP_DEFAULT_FORMAT)
      .addProperty(CarbonCommonConstants.ENABLE_AUTO_LOAD_MERGE, "false")
    sql("drop table if exists  cardinalityTest")
  }

}
