// Copyright (c) 2019, 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.desugar.desugaredlibrary.conversiontests;

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.utils.AndroidApiLevel;
import com.android.tools.r8.utils.BooleanUtils;
import com.android.tools.r8.utils.StringUtils;
import java.nio.file.Path;
import java.time.MonthDay;
import java.util.List;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

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

  private final TestParameters parameters;
  private final boolean shrinkDesugaredLibrary;
  private static final AndroidApiLevel MIN_SUPPORTED = AndroidApiLevel.O;
  private static final String EXPECTED_RESULT =
      StringUtils.lines(
          "FP:--05-05;--06-06",
          "FP:--05-05;--06-06",
          "FP:--05-05;--06-0601",
          "MFP:--05-05;--06-06");
  private static Path CUSTOM_LIB;

  @Parameters(name = "{0}, shrinkDesugaredLibrary: {1}")
  public static List<Object[]> data() {
    return buildParameters(
        getConversionParametersUpToExcluding(MIN_SUPPORTED), BooleanUtils.values());
  }

  public FreezePeriodTest(TestParameters parameters, boolean shrinkDesugaredLibrary) {
    this.shrinkDesugaredLibrary = shrinkDesugaredLibrary;
    this.parameters = parameters;
  }

  @BeforeClass
  public static void compileCustomLib() throws Exception {
    CUSTOM_LIB =
        testForD8(getStaticTemp())
            .addProgramClasses(FreezePeriod.class)
            .setMinApi(MIN_SUPPORTED)
            .compile()
            .writeToZip();
  }

  @Test
  public void testD8() throws Exception {
    KeepRuleConsumer keepRuleConsumer = createKeepRuleConsumer(parameters);
    testForD8()
        .addLibraryFiles(getLibraryFile())
        .setMinApi(parameters.getApiLevel())
        .addProgramClasses(Executor.class, MyFreezePeriod.class)
        .addLibraryClasses(FreezePeriod.class)
        .enableCoreLibraryDesugaring(parameters.getApiLevel(), keepRuleConsumer)
        .compile()
        .addDesugaredCoreLibraryRunClassPath(
            this::buildDesugaredLibrary,
            parameters.getApiLevel(),
            keepRuleConsumer.get(),
            shrinkDesugaredLibrary)
        .addRunClasspathFiles(CUSTOM_LIB)
        .run(parameters.getRuntime(), Executor.class)
        .assertSuccessWithOutput(EXPECTED_RESULT);
  }

  @Test
  public void testD8CfToCf() throws Exception {
    KeepRuleConsumer keepRuleConsumer = createKeepRuleConsumer(parameters);
    Path jar =
        testForD8(Backend.CF)
            .addLibraryFiles(getLibraryFile())
            .setMinApi(parameters.getApiLevel())
            .addProgramClasses(Executor.class, MyFreezePeriod.class)
            .addLibraryClasses(FreezePeriod.class)
            .enableCoreLibraryDesugaring(parameters.getApiLevel(), keepRuleConsumer)
            .compile()
            .writeToZip();
    String desugaredLibraryKeepRules = "";
    if (shrinkDesugaredLibrary && keepRuleConsumer.get() != null) {
      // Collection keep rules is only implemented in the DEX writer.
      assertEquals(0, keepRuleConsumer.get().length());
      desugaredLibraryKeepRules = "-keep class * { *; }";
    }
    if (parameters.getRuntime().isDex()) {
      testForD8()
          .addProgramFiles(jar)
          .setMinApi(parameters.getApiLevel())
          .disableDesugaring()
          .compile()
          .addDesugaredCoreLibraryRunClassPath(
              this::buildDesugaredLibrary,
              parameters.getApiLevel(),
              desugaredLibraryKeepRules,
              shrinkDesugaredLibrary)
          .addRunClasspathFiles(CUSTOM_LIB)
          .run(parameters.getRuntime(), Executor.class)
          .assertSuccessWithOutput(EXPECTED_RESULT);
    } else {
      testForJvm()
          .addProgramFiles(jar)
          .addRunClasspathFiles(getDesugaredLibraryInCF(parameters, options -> {}))
          .addRunClasspathFiles(CUSTOM_LIB)
          .run(parameters.getRuntime(), Executor.class)
          .assertSuccessWithOutput(EXPECTED_RESULT);
    }
  }

  @Test
  public void testR8() throws Exception {
    KeepRuleConsumer keepRuleConsumer = createKeepRuleConsumer(parameters);
    testForR8(parameters.getBackend())
        .addLibraryFiles(getLibraryFile())
        .setMinApi(parameters.getApiLevel())
        .addKeepMainRule(Executor.class)
        .addProgramClasses(Executor.class, MyFreezePeriod.class)
        .addLibraryClasses(FreezePeriod.class)
        .enableCoreLibraryDesugaring(parameters.getApiLevel(), keepRuleConsumer)
        .allowStdoutMessages()
        .compile()
        .addDesugaredCoreLibraryRunClassPath(
            this::buildDesugaredLibrary,
            parameters.getApiLevel(),
            keepRuleConsumer.get(),
            shrinkDesugaredLibrary)
        .addRunClasspathFiles(CUSTOM_LIB)
        .run(parameters.getRuntime(), Executor.class)
        .assertSuccessWithOutput(EXPECTED_RESULT);
  }

  static class Executor {

    public static void main(String[] args) {
      testConversion2ArgsOrLess();
      testConversion3ArgsOrMore();
      testConversionWithValuesOnStack();
      testConversionSuperInit();
    }

    private static void testConversionSuperInit() {
      MyFreezePeriod myFreezePeriod = new MyFreezePeriod(MonthDay.of(5, 5), MonthDay.of(6, 6));
      System.out.println(myFreezePeriod.print());
    }

    private static void testConversionWithValuesOnStack() {
      print(0, new FreezePeriod(MonthDay.of(5, 5), MonthDay.of(6, 6)), 1);
    }

    private static void testConversion3ArgsOrMore() {
      FreezePeriod freezePeriod2 = new FreezePeriod(MonthDay.of(5, 5), MonthDay.of(6, 6), 0, 1);
      System.out.println(freezePeriod2.print());
    }

    private static void testConversion2ArgsOrLess() {
      FreezePeriod freezePeriod = new FreezePeriod(MonthDay.of(5, 5), MonthDay.of(6, 6));
      System.out.println(freezePeriod.print());
    }

    static void print(int i1, FreezePeriod freezePeriod, int i2) {
      System.out.println(freezePeriod.print() + i1 + i2);
    }
  }

  static class MyFreezePeriod extends FreezePeriod {

    public MyFreezePeriod(MonthDay start, MonthDay end) {
      super(start, end);
    }

    public String print() {
      return "M" + super.print();
    }
  }

  // This class will be put at compilation time as library and on the runtime class path.
  // This class is convenient for easy testing. Each method plays the role of methods in the
  // platform APIs for which argument/return values need conversion.
  static class FreezePeriod {

    private final MonthDay start;
    private final MonthDay end;

    public FreezePeriod(MonthDay start, MonthDay end) {
      this.start = start;
      this.end = end;
    }

    public FreezePeriod(MonthDay start, MonthDay end, int extra1, Integer extra2) {
      this.start = start;
      this.end = end;
    }

    public String print() {
      return "FP:" + start + ";" + end;
    }
  }
}