/*
 * 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.arrow.driver.jdbc.accessor.impl.numeric;

import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.junit.jupiter.api.Assertions.assertThrows;

import java.math.BigDecimal;
import java.math.RoundingMode;
import java.sql.SQLException;
import org.apache.arrow.driver.jdbc.utils.AccessorTestUtils;
import org.apache.arrow.driver.jdbc.utils.RootAllocatorTestExtension;
import org.apache.arrow.vector.Float8Vector;
import org.hamcrest.CoreMatchers;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.RegisterExtension;

public class ArrowFlightJdbcFloat8VectorAccessorTest {

  @RegisterExtension
  public static RootAllocatorTestExtension rootAllocatorTestExtension =
      new RootAllocatorTestExtension();

  private Float8Vector vector;
  private Float8Vector vectorWithNull;

  private final AccessorTestUtils.AccessorSupplier<ArrowFlightJdbcFloat8VectorAccessor>
      accessorSupplier =
          (vector, getCurrentRow) ->
              new ArrowFlightJdbcFloat8VectorAccessor(
                  (Float8Vector) vector, getCurrentRow, (boolean wasNull) -> {});

  private final AccessorTestUtils.AccessorIterator<ArrowFlightJdbcFloat8VectorAccessor>
      accessorIterator = new AccessorTestUtils.AccessorIterator<>(accessorSupplier);

  @BeforeEach
  public void setup() {
    this.vector = rootAllocatorTestExtension.createFloat8Vector();
    this.vectorWithNull = rootAllocatorTestExtension.createFloat8VectorForNullTests();
  }

  @AfterEach
  public void tearDown() {
    this.vector.close();
    this.vectorWithNull.close();
  }

  @Test
  public void testShouldGetDoubleMethodFromFloat8Vector() throws Exception {
    accessorIterator.assertAccessorGetter(
        vector,
        ArrowFlightJdbcFloat8VectorAccessor::getDouble,
        (accessor, currentRow) -> is(vector.getValueAsDouble(currentRow)));
  }

  @Test
  public void testShouldGetObjectMethodFromFloat8Vector() throws Exception {
    accessorIterator.assertAccessorGetter(
        vector,
        ArrowFlightJdbcFloat8VectorAccessor::getObject,
        (accessor) -> is(accessor.getDouble()));
  }

  @Test
  public void testShouldGetStringMethodFromFloat8Vector() throws Exception {
    accessorIterator.assertAccessorGetter(
        vector,
        ArrowFlightJdbcFloat8VectorAccessor::getString,
        (accessor) -> is(Double.toString(accessor.getDouble())));
  }

  @Test
  public void testShouldGetBooleanMethodFromFloat8Vector() throws Exception {
    accessorIterator.assertAccessorGetter(
        vector,
        ArrowFlightJdbcFloat8VectorAccessor::getBoolean,
        (accessor) -> is(accessor.getDouble() != 0.0));
  }

  @Test
  public void testShouldGetByteMethodFromFloat8Vector() throws Exception {
    accessorIterator.assertAccessorGetter(
        vector,
        ArrowFlightJdbcFloat8VectorAccessor::getByte,
        (accessor) -> is((byte) accessor.getDouble()));
  }

  @Test
  public void testShouldGetShortMethodFromFloat8Vector() throws Exception {
    accessorIterator.assertAccessorGetter(
        vector,
        ArrowFlightJdbcFloat8VectorAccessor::getShort,
        (accessor) -> is((short) accessor.getDouble()));
  }

  @Test
  public void testShouldGetIntMethodFromFloat8Vector() throws Exception {
    accessorIterator.assertAccessorGetter(
        vector,
        ArrowFlightJdbcFloat8VectorAccessor::getInt,
        (accessor) -> is((int) accessor.getDouble()));
  }

  @Test
  public void testShouldGetLongMethodFromFloat8Vector() throws Exception {
    accessorIterator.assertAccessorGetter(
        vector,
        ArrowFlightJdbcFloat8VectorAccessor::getLong,
        (accessor) -> is((long) accessor.getDouble()));
  }

  @Test
  public void testShouldGetFloatMethodFromFloat8Vector() throws Exception {
    accessorIterator.assertAccessorGetter(
        vector,
        ArrowFlightJdbcFloat8VectorAccessor::getFloat,
        (accessor) -> is((float) accessor.getDouble()));
  }

  @Test
  public void testShouldGetBigDecimalMethodFromFloat8Vector() throws Exception {
    accessorIterator.iterate(
        vector,
        (accessor, currentRow) -> {
          double value = accessor.getDouble();
          if (Double.isInfinite(value) || Double.isNaN(value)) {
            assertThrows(SQLException.class, accessor::getBigDecimal);
          } else {
            assertThat(accessor.getBigDecimal(), is(BigDecimal.valueOf(value)));
          }
        });
  }

  @Test
  public void testShouldGetObjectClass() throws Exception {
    accessorIterator.assertAccessorGetter(
        vector, ArrowFlightJdbcFloat8VectorAccessor::getObjectClass, equalTo(Double.class));
  }

  @Test
  public void testShouldGetStringMethodFromFloat8VectorWithNull() throws Exception {
    accessorIterator.assertAccessorGetter(
        vectorWithNull, ArrowFlightJdbcFloat8VectorAccessor::getString, CoreMatchers.nullValue());
  }

  @Test
  public void testShouldGetFloatMethodFromFloat8VectorWithNull() throws Exception {
    accessorIterator.assertAccessorGetter(
        vectorWithNull, ArrowFlightJdbcFloat8VectorAccessor::getFloat, is(0.0f));
  }

  @Test
  public void testShouldGetBigDecimalMethodFromFloat8VectorWithNull() throws Exception {
    accessorIterator.assertAccessorGetter(
        vectorWithNull,
        ArrowFlightJdbcFloat8VectorAccessor::getBigDecimal,
        CoreMatchers.nullValue());
  }

  @Test
  public void testShouldGetBigDecimalWithScaleMethodFromFloat4Vector() throws Exception {
    accessorIterator.iterate(
        vector,
        (accessor, currentRow) -> {
          double value = accessor.getDouble();
          if (Double.isInfinite(value) || Double.isNaN(value)) {
            assertThrows(SQLException.class, () -> accessor.getBigDecimal(9));
          } else {
            assertThat(
                accessor.getBigDecimal(9),
                is(BigDecimal.valueOf(value).setScale(9, RoundingMode.HALF_UP)));
          }
        });
  }

  @Test
  public void testShouldGetObjectMethodFromFloat8VectorWithNull() throws Exception {
    accessorIterator.assertAccessorGetter(
        vectorWithNull, ArrowFlightJdbcFloat8VectorAccessor::getObject, CoreMatchers.nullValue());
  }
}
