// Copyright (c) 2020, 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.kotlin.metadata;

import static com.android.tools.r8.ToolHelper.getKotlinCompilers;
import static com.android.tools.r8.utils.codeinspector.Matchers.isPresent;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.junit.Assert.assertNull;

import com.android.tools.r8.KotlinCompilerTool.KotlinCompiler;
import com.android.tools.r8.TestParameters;
import com.android.tools.r8.ToolHelper;
import com.android.tools.r8.ToolHelper.KotlinTargetVersion;
import com.android.tools.r8.kotlin.KotlinMetadataWriter;
import com.android.tools.r8.shaking.ProguardKeepAttributes;
import com.android.tools.r8.utils.StringUtils;
import com.android.tools.r8.utils.codeinspector.ClassSubject;
import com.android.tools.r8.utils.codeinspector.CodeInspector;
import com.android.tools.r8.utils.codeinspector.FoundClassSubject;
import java.io.IOException;
import java.nio.file.Path;
import java.util.Collection;
import junit.framework.TestCase;
import kotlinx.metadata.jvm.KotlinClassHeader;
import kotlinx.metadata.jvm.KotlinClassMetadata;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

@RunWith(Parameterized.class)
public class MetadataRewriteInlinePropertyTest extends KotlinMetadataTestBase {

  private final String EXPECTED = StringUtils.lines("true", "false", "false", "true");

  @Parameterized.Parameters(name = "{0}, target: {1}, kotlinc: {2}")
  public static Collection<Object[]> data() {
    return buildParameters(
        getTestParameters().withCfRuntimes().build(),
        KotlinTargetVersion.values(),
        getKotlinCompilers());
  }

  public MetadataRewriteInlinePropertyTest(
      TestParameters parameters, KotlinTargetVersion targetVersion, KotlinCompiler kotlinc) {
    super(targetVersion, kotlinc);
    this.parameters = parameters;
  }

  private static final KotlinCompileMemoizer libJars =
      getCompileMemoizer(getKotlinFileInTest(PKG_PREFIX + "/inline_property_lib", "lib"));
  private final TestParameters parameters;

  @Test
  public void smokeTest() throws Exception {
    Path libJar = libJars.getForConfiguration(kotlinc, targetVersion);
    Path output =
        kotlinc(parameters.getRuntime().asCf(), kotlinc, targetVersion)
            .addClasspathFiles(libJar)
            .addSourceFiles(getKotlinFileInTest(PKG_PREFIX + "/inline_property_app", "main"))
            .setOutputPath(temp.newFolder().toPath())
            .compile();
    testForJvm()
        .addRunClasspathFiles(ToolHelper.getKotlinStdlibJar(kotlinc), libJar)
        .addClasspath(output)
        .run(parameters.getRuntime(), PKG + ".inline_property_app.MainKt")
        .assertSuccessWithOutput(EXPECTED);
  }

  @Test
  public void testMetadataForLib() throws Exception {
    Path libJar =
        testForR8(parameters.getBackend())
            .addClasspathFiles(ToolHelper.getKotlinStdlibJar(kotlinc))
            .addProgramFiles(libJars.getForConfiguration(kotlinc, targetVersion))
            // Allow renaming A to ensure that we rename in the flexible upper bound type.
            .addKeepAllClassesRule()
            .addKeepAttributes(
                ProguardKeepAttributes.RUNTIME_VISIBLE_ANNOTATIONS,
                ProguardKeepAttributes.SIGNATURE,
                ProguardKeepAttributes.INNER_CLASSES,
                ProguardKeepAttributes.ENCLOSING_METHOD)
            .compile()
            .inspect(this::inspect)
            .writeToZip();
    Path main =
        kotlinc(parameters.getRuntime().asCf(), kotlinc, targetVersion)
            .addClasspathFiles(libJar)
            .addSourceFiles(getKotlinFileInTest(PKG_PREFIX + "/inline_property_app", "main"))
            .setOutputPath(temp.newFolder().toPath())
            .compile();
    testForJvm()
        .addRunClasspathFiles(
            ToolHelper.getKotlinStdlibJar(kotlinc), ToolHelper.getKotlinReflectJar(kotlinc), libJar)
        .addClasspath(main)
        .run(parameters.getRuntime(), PKG + ".inline_property_app.MainKt")
        .assertSuccessWithOutput(EXPECTED);
  }

  private void inspect(CodeInspector inspector) throws IOException {
    CodeInspector stdLibInspector =
        new CodeInspector(libJars.getForConfiguration(kotlinc, targetVersion));
    for (FoundClassSubject clazzSubject : stdLibInspector.allClasses()) {
      ClassSubject r8Clazz = inspector.clazz(clazzSubject.getOriginalName());
      assertThat(r8Clazz, isPresent());
      KotlinClassMetadata originalMetadata = clazzSubject.getKotlinClassMetadata();
      KotlinClassMetadata rewrittenMetadata = r8Clazz.getKotlinClassMetadata();
      if (originalMetadata == null) {
        assertNull(rewrittenMetadata);
        continue;
      }
      TestCase.assertNotNull(rewrittenMetadata);
      KotlinClassHeader originalHeader = originalMetadata.getHeader();
      KotlinClassHeader rewrittenHeader = rewrittenMetadata.getHeader();
      TestCase.assertEquals(originalHeader.getKind(), rewrittenHeader.getKind());
      TestCase.assertEquals(originalHeader.getPackageName(), rewrittenHeader.getPackageName());
      // We cannot assert equality of the data since it may be ordered differently. Instead we use
      // the KotlinMetadataWriter.
      String expected = KotlinMetadataWriter.kotlinMetadataToString("", originalMetadata);
      String actual = KotlinMetadataWriter.kotlinMetadataToString("", rewrittenMetadata);
      TestCase.assertEquals(expected, actual);
    }
  }
}