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   * 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
   *
   *     https://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.avro.data;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import java.time.Instant;
  import java.time.LocalDate;
  import java.time.LocalTime;
  import java.time.ZoneOffset;
  import java.time.ZonedDateTime;
  import org.apache.avro.Conversion;
  import org.apache.avro.LogicalTypes;
  import org.apache.avro.Schema;
  import org.apache.avro.data.TimeConversions.DateConversion;
  import org.apache.avro.data.TimeConversions.TimeMicrosConversion;
  import org.apache.avro.data.TimeConversions.TimeMillisConversion;
  import org.apache.avro.data.TimeConversions.TimestampMicrosConversion;
  import org.apache.avro.data.TimeConversions.TimestampMillisConversion;
  import org.apache.avro.reflect.ReflectData;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.Test;
  
  public class TestTimeConversions {
  
    public static Schema DATE_SCHEMA;
    public static Schema TIME_MILLIS_SCHEMA;
    public static Schema TIME_MICROS_SCHEMA;
    public static Schema TIMESTAMP_MILLIS_SCHEMA;
    public static Schema TIMESTAMP_MICROS_SCHEMA;
  
    @BeforeAll
    public static void createSchemas() {
      TestTimeConversions.DATE_SCHEMA = LogicalTypes.date().addToSchema(Schema.create(Schema.Type.INT));
      TestTimeConversions.TIME_MILLIS_SCHEMA = LogicalTypes.timeMillis().addToSchema(Schema.create(Schema.Type.INT));
      TestTimeConversions.TIME_MICROS_SCHEMA = LogicalTypes.timeMicros().addToSchema(Schema.create(Schema.Type.LONG));
      TestTimeConversions.TIMESTAMP_MILLIS_SCHEMA = LogicalTypes.timestampMillis()
          .addToSchema(Schema.create(Schema.Type.LONG));
      TestTimeConversions.TIMESTAMP_MICROS_SCHEMA = LogicalTypes.timestampMicros()
          .addToSchema(Schema.create(Schema.Type.LONG));
    }
  
    @Test
    void dateConversion() throws Exception {
      DateConversion conversion = new DateConversion();
      LocalDate Jan_6_1970 = LocalDate.of(1970, 1, 6); // 5
      LocalDate Jan_1_1970 = LocalDate.of(1970, 1, 1); // 0
      LocalDate Dec_27_1969 = LocalDate.of(1969, 12, 27); // -5
  
      assertEquals(5, (int) conversion.toInt(Jan_6_1970, DATE_SCHEMA, LogicalTypes.date()), "6 Jan 1970 should be 5");
      assertEquals(0, (int) conversion.toInt(Jan_1_1970, DATE_SCHEMA, LogicalTypes.date()), "1 Jan 1970 should be 0");
      assertEquals(-5, (int) conversion.toInt(Dec_27_1969, DATE_SCHEMA, LogicalTypes.date()), "27 Dec 1969 should be -5");
  
      assertEquals(conversion.fromInt(5, DATE_SCHEMA, LogicalTypes.date()), Jan_6_1970, "6 Jan 1970 should be 5");
      assertEquals(conversion.fromInt(0, DATE_SCHEMA, LogicalTypes.date()), Jan_1_1970, "1 Jan 1970 should be 0");
      assertEquals(conversion.fromInt(-5, DATE_SCHEMA, LogicalTypes.date()), Dec_27_1969, "27 Dec 1969 should be -5");
    }
  
    @Test
    void timeMillisConversion() {
      TimeMillisConversion conversion = new TimeMillisConversion();
      LocalTime oneAM = LocalTime.of(1, 0);
      LocalTime afternoon = LocalTime.of(15, 14, 15, 926_000_000);
      int afternoonMillis = ((15 * 60 + 14) * 60 + 15) * 1000 + 926;
  
      assertEquals(0, (int) conversion.toInt(LocalTime.MIDNIGHT, TIME_MILLIS_SCHEMA, LogicalTypes.timeMillis()),
          "Midnight should be 0");
      assertEquals(3_600_000, (int) conversion.toInt(oneAM, TIME_MILLIS_SCHEMA, LogicalTypes.timeMillis()),
          "01:00 should be 3,600,000");
      assertEquals(afternoonMillis, (int) conversion.toInt(afternoon, TIME_MILLIS_SCHEMA, LogicalTypes.timeMillis()),
          "15:14:15.926 should be " + afternoonMillis);
  
      assertEquals(LocalTime.MIDNIGHT, conversion.fromInt(0, TIME_MILLIS_SCHEMA, LogicalTypes.timeMillis()),
          "Midnight should be 0");
      assertEquals(oneAM, conversion.fromInt(3600000, TIME_MILLIS_SCHEMA, LogicalTypes.timeMillis()),
          "01:00 should be 3,600,000");
      assertEquals(afternoon, conversion.fromInt(afternoonMillis, TIME_MILLIS_SCHEMA, LogicalTypes.timeMillis()),
          "15:14:15.926 should be " + afternoonMillis);
    }
  
    @Test
    void timeMicrosConversion() throws Exception {
      TimeMicrosConversion conversion = new TimeMicrosConversion();
      LocalTime oneAM = LocalTime.of(1, 0);
      LocalTime afternoon = LocalTime.of(15, 14, 15, 926_551_000);
      long afternoonMicros = ((long) (15 * 60 + 14) * 60 + 15) * 1_000_000 + 926_551;
  
      assertEquals(LocalTime.MIDNIGHT, conversion.fromLong(0L, TIME_MICROS_SCHEMA, LogicalTypes.timeMicros()),
          "Midnight should be 0");
      assertEquals(oneAM, conversion.fromLong(3_600_000_000L, TIME_MICROS_SCHEMA, LogicalTypes.timeMicros()),
          "01:00 should be 3,600,000,000");
      assertEquals(afternoon, conversion.fromLong(afternoonMicros, TIME_MICROS_SCHEMA, LogicalTypes.timeMicros()),
          "15:14:15.926551 should be " + afternoonMicros);
  
      assertEquals(0, (long) conversion.toLong(LocalTime.MIDNIGHT, TIME_MICROS_SCHEMA, LogicalTypes.timeMicros()),
          "Midnight should be 0");
      assertEquals(3_600_000_000L, (long) conversion.toLong(oneAM, TIME_MICROS_SCHEMA, LogicalTypes.timeMicros()),
          "01:00 should be 3,600,000,000");
      assertEquals(afternoonMicros, (long) conversion.toLong(afternoon, TIME_MICROS_SCHEMA, LogicalTypes.timeMicros()),
          "15:14:15.926551 should be " + afternoonMicros);
    }
  
    @Test
    void timestampMillisConversion() throws Exception {
      TimestampMillisConversion conversion = new TimestampMillisConversion();
      long nowInstant = Instant.now().toEpochMilli(); // ms precision
  
      // round trip
      Instant now = conversion.fromLong(nowInstant, TIMESTAMP_MILLIS_SCHEMA, LogicalTypes.timestampMillis());
      long roundTrip = conversion.toLong(now, TIMESTAMP_MILLIS_SCHEMA, LogicalTypes.timestampMillis());
      assertEquals(nowInstant, roundTrip, "Round-trip conversion should work");
  
      long May_28_2015_21_46_53_221_instant = 1432849613221L;
      Instant May_28_2015_21_46_53_221 = ZonedDateTime.of(2015, 5, 28, 21, 46, 53, 221_000_000, ZoneOffset.UTC)
          .toInstant();
  
      // known dates from https://www.epochconverter.com/
      // > Epoch
      assertEquals(May_28_2015_21_46_53_221,
          conversion.fromLong(May_28_2015_21_46_53_221_instant, TIMESTAMP_MILLIS_SCHEMA, LogicalTypes.timestampMillis()),
          "Known date should be correct");
      assertEquals(May_28_2015_21_46_53_221_instant,
          (long) conversion.toLong(May_28_2015_21_46_53_221, TIMESTAMP_MILLIS_SCHEMA, LogicalTypes.timestampMillis()),
          "Known date should be correct");
  
      // Epoch
      assertEquals(Instant.EPOCH, conversion.fromLong(0L, TIMESTAMP_MILLIS_SCHEMA, LogicalTypes.timestampMillis()),
          "1970-01-01 should be 0");
      assertEquals(0L, (long) conversion.toLong(ZonedDateTime.ofInstant(Instant.EPOCH, ZoneOffset.UTC).toInstant(),
          TIMESTAMP_MILLIS_SCHEMA, LogicalTypes.timestampMillis()), "1970-01-01 should be 0");
  
      // < Epoch
      long Jul_01_1969_12_00_00_123_instant = -15854400000L + 123;
      Instant Jul_01_1969_12_00_00_123 = ZonedDateTime.of(1969, 7, 1, 12, 0, 0, 123_000_000, ZoneOffset.UTC).toInstant();
  
      assertEquals(Jul_01_1969_12_00_00_123,
          conversion.fromLong(Jul_01_1969_12_00_00_123_instant, TIMESTAMP_MILLIS_SCHEMA, LogicalTypes.timestampMillis()),
          "Pre 1970 date should be correct");
      assertEquals(Jul_01_1969_12_00_00_123_instant,
          (long) conversion.toLong(Jul_01_1969_12_00_00_123, TIMESTAMP_MILLIS_SCHEMA, LogicalTypes.timestampMillis()),
          "Pre 1970 date should be correct");
    }
  
    @Test
    void timestampMicrosConversion() throws Exception {
      TimestampMicrosConversion conversion = new TimestampMicrosConversion();
  
      // known dates from https://www.epochconverter.com/
      // > Epoch
      long May_28_2015_21_46_53_221_843_instant = 1432849613221L * 1000 + 843;
      Instant May_28_2015_21_46_53_221_843 = ZonedDateTime.of(2015, 5, 28, 21, 46, 53, 221_843_000, ZoneOffset.UTC)
          .toInstant();
  
      assertEquals(May_28_2015_21_46_53_221_843, conversion.fromLong(May_28_2015_21_46_53_221_843_instant,
          TIMESTAMP_MICROS_SCHEMA, LogicalTypes.timestampMicros()), "Known date should be correct");
  
      assertEquals(May_28_2015_21_46_53_221_843_instant,
          (long) conversion.toLong(May_28_2015_21_46_53_221_843, TIMESTAMP_MICROS_SCHEMA, LogicalTypes.timestampMillis()),
          "Known date should be correct");
  
      // Epoch
      assertEquals(Instant.EPOCH, conversion.fromLong(0L, TIMESTAMP_MILLIS_SCHEMA, LogicalTypes.timestampMillis()),
          "1970-01-01 should be 0");
      assertEquals(0L, (long) conversion.toLong(ZonedDateTime.ofInstant(Instant.EPOCH, ZoneOffset.UTC).toInstant(),
          TIMESTAMP_MILLIS_SCHEMA, LogicalTypes.timestampMillis()), "1970-01-01 should be 0");
  
      // < Epoch
      long Jul_01_1969_12_00_00_000_123_instant = -15854400000L * 1000 + 123;
      Instant Jul_01_1969_12_00_00_000_123 = ZonedDateTime.of(1969, 7, 1, 12, 0, 0, 123_000, ZoneOffset.UTC).toInstant();
  
      assertEquals(Jul_01_1969_12_00_00_000_123, conversion.fromLong(Jul_01_1969_12_00_00_000_123_instant,
          TIMESTAMP_MILLIS_SCHEMA, LogicalTypes.timestampMillis()), "Pre 1970 date should be correct");
      assertEquals(Jul_01_1969_12_00_00_000_123_instant,
          (long) conversion.toLong(Jul_01_1969_12_00_00_000_123, TIMESTAMP_MILLIS_SCHEMA, LogicalTypes.timestampMillis()),
          "Pre 1970 date should be correct");
    }
  
    @Test
    void dynamicSchemaWithDateConversion() throws ClassNotFoundException {
      Schema schema = getReflectedSchemaByName("java.time.LocalDate", new TimeConversions.DateConversion());
      assertEquals(DATE_SCHEMA, schema, "Reflected schema should be logicalType date");
    }
  
    @Test
    void dynamicSchemaWithTimeConversion() throws ClassNotFoundException {
      Schema schema = getReflectedSchemaByName("java.time.LocalTime", new TimeConversions.TimeMillisConversion());
      assertEquals(TIME_MILLIS_SCHEMA, schema, "Reflected schema should be logicalType timeMillis");
    }
  
    @Test
    void dynamicSchemaWithTimeMicrosConversion() throws ClassNotFoundException {
      Schema schema = getReflectedSchemaByName("java.time.LocalTime", new TimeConversions.TimeMicrosConversion());
      assertEquals(TIME_MICROS_SCHEMA, schema, "Reflected schema should be logicalType timeMicros");
    }
  
    @Test
    void dynamicSchemaWithDateTimeConversion() throws ClassNotFoundException {
      Schema schema = getReflectedSchemaByName("java.time.Instant", new TimeConversions.TimestampMillisConversion());
      assertEquals(TIMESTAMP_MILLIS_SCHEMA, schema, "Reflected schema should be logicalType timestampMillis");
    }
  
    @Test
    void dynamicSchemaWithDateTimeMicrosConversion() throws ClassNotFoundException {
      Schema schema = getReflectedSchemaByName("java.time.Instant", new TimeConversions.TimestampMicrosConversion());
      assertEquals(TIMESTAMP_MICROS_SCHEMA, schema, "Reflected schema should be logicalType timestampMicros");
    }
  
    private Schema getReflectedSchemaByName(String className, Conversion<?> conversion) throws ClassNotFoundException {
      // one argument: a fully qualified class name
      Class<?> cls = Class.forName(className);
  
      // get the reflected schema for the given class
      ReflectData model = new ReflectData();
      model.addLogicalTypeConversion(conversion);
      return model.getSchema(cls);
    }
  }
  