// Copyright (c) 2022, the R8 project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

package com.android.tools.r8.profile.art;

import static com.android.tools.r8.desugar.desugaredlibrary.test.CompilationSpecification.DEFAULT_SPECIFICATIONS;
import static com.android.tools.r8.desugar.desugaredlibrary.test.LibraryDesugaringSpecification.getJdk8Jdk11;
import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent;
import static com.android.tools.r8.utils.codeinspector.Matchers.isPresentAndNotRenamed;
import static com.android.tools.r8.utils.codeinspector.Matchers.isPresentAndRenamed;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.junit.Assert.assertEquals;

import com.android.tools.r8.TestParameters;
import com.android.tools.r8.desugar.desugaredlibrary.DesugaredLibraryTestBase;
import com.android.tools.r8.desugar.desugaredlibrary.test.CompilationSpecification;
import com.android.tools.r8.desugar.desugaredlibrary.test.LibraryDesugaringSpecification;
import com.android.tools.r8.origin.Origin;
import com.android.tools.r8.references.MethodReference;
import com.android.tools.r8.references.Reference;
import com.android.tools.r8.utils.codeinspector.ClassSubject;
import com.android.tools.r8.utils.codeinspector.MethodSubject;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
import org.junit.Assume;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameter;
import org.junit.runners.Parameterized.Parameters;

@RunWith(Parameterized.class)
public class DesugaredLibraryArtProfileRewritingTest extends DesugaredLibraryTestBase {

  @Parameter(0)
  public TestParameters parameters;

  @Parameter(1)
  public CompilationSpecification compilationSpecification;

  @Parameter(2)
  public LibraryDesugaringSpecification libraryDesugaringSpecification;

  @Parameters(name = "{0}, spec: {1}, {2}")
  public static List<Object[]> data() {
    return buildParameters(
        getTestParameters().withDexRuntimes().withAllApiLevels().build(),
        DEFAULT_SPECIFICATIONS,
        getJdk8Jdk11());
  }

  @Test
  public void test() throws Throwable {
    Assume.assumeTrue(libraryDesugaringSpecification.hasEmulatedInterfaceDesugaring(parameters));
    ArtProfileProviderForTesting artProfileProvider = new ArtProfileProviderForTesting();
    ArtProfileConsumerForTesting residualArtProfileConsumer = new ArtProfileConsumerForTesting();
    testForDesugaredLibrary(parameters, libraryDesugaringSpecification, compilationSpecification)
        .addInnerClasses(getClass())
        .addKeepMainRule(Main.class)
        .addL8ArtProfileForRewriting(artProfileProvider, residualArtProfileConsumer)
        .compile()
        .inspectL8(
            inspector -> {
              ClassSubject consumerClassSubject =
                  inspector.clazz(
                      libraryDesugaringSpecification.functionPrefix(parameters)
                          + ".util.function.Consumer");
              assertThat(consumerClassSubject, isPresent());

              ClassSubject streamClassSubject = inspector.clazz("j$.util.stream.Stream");
              assertThat(streamClassSubject, isPresentAndNotRenamed());

              MethodSubject forEachMethodSubject =
                  streamClassSubject.uniqueMethodWithOriginalName("forEach");
              assertThat(
                  forEachMethodSubject,
                  isPresentAndRenamed(
                      compilationSpecification.isL8Shrink()
                          && libraryDesugaringSpecification
                              == LibraryDesugaringSpecification.JDK8));
              assertEquals(
                  consumerClassSubject.asTypeSubject(), forEachMethodSubject.getParameter(0));

              assertEquals(
                  Lists.newArrayList(forEachMethodSubject.getFinalReference()),
                  residualArtProfileConsumer.references);
            })
        .run(parameters.getRuntime(), Main.class)
        .assertSuccessWithOutputLines("0");
  }

  class ArtProfileProviderForTesting implements ArtProfileProvider {

    @Override
    public void getArtProfile(ArtProfileBuilder profileBuilder) {
      MethodReference forEachMethodReference =
          Reference.method(
              Reference.classFromTypeName("j$.util.stream.Stream"),
              "forEach",
              ImmutableList.of(
                  Reference.classFromTypeName(
                      libraryDesugaringSpecification.functionPrefix(parameters)
                          + ".util.function.Consumer")),
              null);
      profileBuilder.addMethodRule(
          methodRuleBuilder -> methodRuleBuilder.setMethodReference(forEachMethodReference));
    }

    @Override
    public Origin getOrigin() {
      return Origin.unknown();
    }
  }

  static class Main {

    public static void main(String[] args) {
      System.out.println(new ArrayList<>().stream().collect(Collectors.toList()).size());
    }
  }
}