/*
 * Copyright (C) 2017 The Dagger Authors.
 *
 * Licensed 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 dagger.internal.codegen;

import static com.google.testing.compile.CompilationSubject.assertThat;
import static dagger.internal.codegen.Compilers.compilerWithOptions;

import com.google.common.collect.ImmutableList;
import com.google.testing.compile.Compilation;
import com.google.testing.compile.JavaFileObjects;
import dagger.testing.golden.GoldenFileRule;
import java.util.Collection;
import javax.tools.JavaFileObject;
import org.junit.Rule;
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 OptionalBindingRequestFulfillmentTest {
  @Parameters(name = "{0}")
  public static Collection<Object[]> parameters() {
    return ImmutableList.copyOf(
        new Object[][] {
            {CompilerMode.DEFAULT_MODE},
            {CompilerMode.DEFAULT_JAVA7_MODE},
            {CompilerMode.FAST_INIT_MODE},
            {CompilerMode.FAST_INIT_JAVA7_MODE}
        });
  }

  @Rule public GoldenFileRule goldenFileRule = new GoldenFileRule();

  private final CompilerMode compilerMode;

  public OptionalBindingRequestFulfillmentTest(CompilerMode compilerMode) {
    this.compilerMode = compilerMode;
  }

  @Test
  public void inlinedOptionalBindings() throws Exception {
    JavaFileObject module =
        JavaFileObjects.forSourceLines(
            "test.TestModule",
            "package test;",
            "",
            "import dagger.Module;",
            "import dagger.BindsOptionalOf;",
            "import other.Maybe;",
            "import other.DefinitelyNot;",
            "",
            "@Module",
            "interface TestModule {",
            "  @BindsOptionalOf Maybe maybe();",
            "  @BindsOptionalOf DefinitelyNot definitelyNot();",
            "}");
    JavaFileObject maybe =
        JavaFileObjects.forSourceLines(
            "other.Maybe",
            "package other;",
            "",
            "import dagger.Module;",
            "import dagger.Provides;",
            "",
            "public class Maybe {",
            "  @Module",
            "  public static class MaybeModule {",
            "    @Provides static Maybe provideMaybe() { return new Maybe(); }",
            "  }",
            "}");
    JavaFileObject definitelyNot =
        JavaFileObjects.forSourceLines(
            "other.DefinitelyNot",
            "package other;",
            "",
            "public class DefinitelyNot {}");

    JavaFileObject component =
        JavaFileObjects.forSourceLines(
            "test.TestComponent",
            "package test;",
            "",
            "import com.google.common.base.Optional;",
            "import dagger.Component;",
            "import dagger.Lazy;",
            "import javax.inject.Provider;",
            "import other.Maybe;",
            "import other.DefinitelyNot;",
            "",
            "@Component(modules = {TestModule.class, Maybe.MaybeModule.class})",
            "interface TestComponent {",
            "  Optional<Maybe> maybe();",
            "  Optional<Provider<Lazy<Maybe>>> providerOfLazyOfMaybe();",
            "  Optional<DefinitelyNot> definitelyNot();",
            "  Optional<Provider<Lazy<DefinitelyNot>>> providerOfLazyOfDefinitelyNot();",
            "}");

    Compilation compilation =
        compilerWithOptions(compilerMode)
            .compile(module, maybe, definitelyNot, component);
    assertThat(compilation).succeeded();
    assertThat(compilation)
        .generatedSourceFile("test.DaggerTestComponent")
        .hasSourceEquivalentTo(goldenFileRule.goldenFile("test.DaggerTestComponent"));
  }

  @Test
  public void requestForFuture() throws Exception {
    JavaFileObject module =
        JavaFileObjects.forSourceLines(
            "test.TestModule",
            "package test;",
            "",
            "import dagger.Module;",
            "import dagger.BindsOptionalOf;",
            "import other.Maybe;",
            "import other.DefinitelyNot;",
            "",
            "@Module",
            "interface TestModule {",
            "  @BindsOptionalOf Maybe maybe();",
            "  @BindsOptionalOf DefinitelyNot definitelyNot();",
            "}");
    JavaFileObject maybe =
        JavaFileObjects.forSourceLines(
            "other.Maybe",
            "package other;",
            "",
            "import dagger.Module;",
            "import dagger.Provides;",
            "",
            "public class Maybe {",
            "  @Module",
            "  public static class MaybeModule {",
            "    @Provides static Maybe provideMaybe() { return new Maybe(); }",
            "  }",
            "}");
    JavaFileObject definitelyNot =
        JavaFileObjects.forSourceLines(
            "other.DefinitelyNot",
            "package other;",
            "",
            "public class DefinitelyNot {}");

    JavaFileObject component =
        JavaFileObjects.forSourceLines(
            "test.TestComponent",
            "package test;",
            "",
            "import com.google.common.base.Optional;",
            "import com.google.common.util.concurrent.ListenableFuture;",
            "import dagger.producers.ProductionComponent;",
            "import javax.inject.Provider;",
            "import other.Maybe;",
            "import other.DefinitelyNot;",
            "",
            "@ProductionComponent(modules = {TestModule.class, Maybe.MaybeModule.class})",
            "interface TestComponent {",
            "  ListenableFuture<Optional<Maybe>> maybe();",
            "  ListenableFuture<Optional<DefinitelyNot>> definitelyNot();",
            "}");

    Compilation compilation =
        compilerWithOptions(compilerMode).compile(module, maybe, definitelyNot, component);
    assertThat(compilation).succeeded();
    assertThat(compilation)
        .generatedSourceFile("test.DaggerTestComponent")
        .hasSourceEquivalentTo(goldenFileRule.goldenFile("test.DaggerTestComponent"));
  }
}