/*
 * Copyright (C) 2014 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.common.truth.Truth.assertAbout;
import static com.google.testing.compile.JavaSourcesSubjectFactory.javaSources;

import com.google.auto.value.processor.AutoAnnotationProcessor;
import com.google.common.collect.ImmutableList;
import com.google.testing.compile.JavaFileObjects;
import java.util.Collection;
import javax.tools.JavaFileObject;
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 MapKeyProcessorTest {
  @Parameters(name = "{0}")
  public static Collection<Object[]> parameters() {
    return CompilerMode.TEST_PARAMETERS;
  }

  private final CompilerMode compilerMode;

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

  @Test
  public void mapKeyCreatorFile() {
    JavaFileObject enumKeyFile = JavaFileObjects.forSourceLines("test.PathKey",
        "package test;",
        "import dagger.MapKey;",
        "import java.lang.annotation.Retention;",
        "import static java.lang.annotation.RetentionPolicy.RUNTIME;",
        "",
        "@MapKey(unwrapValue = false)",
        "@Retention(RUNTIME)",
        "public @interface PathKey {",
        "  PathEnum value();",
        "  String relativePath() default \"Defaultpath\";",
        "}");
    JavaFileObject pathEnumFile = JavaFileObjects.forSourceLines("test.PathEnum",
        "package test;",
        "",
        "public enum PathEnum {",
        "    ADMIN,",
        "    LOGIN;",
        "}");
    JavaFileObject generatedKeyCreator =
        JavaFileObjects.forSourceLines(
            "test.PathKeyCreator",
            "package test;",
            "",
            GeneratedLines.generatedImports("import com.google.auto.value.AutoAnnotation;"),
            "",
            GeneratedLines.generatedAnnotations(),
            "public final class PathKeyCreator {",
            "  private PathKeyCreator() {}",
            "",
            "  @AutoAnnotation",
            "  public static PathKey createPathKey(PathEnum value, String relativePath) {",
            "    return new AutoAnnotation_PathKeyCreator_createPathKey(value, relativePath);",
            "  }",
            "}");
    assertAbout(javaSources())
        .that(ImmutableList.of(enumKeyFile, pathEnumFile))
        .withCompilerOptions(compilerMode.javacopts())
        .processedWith(new ComponentProcessor(), new AutoAnnotationProcessor())
        .compilesWithoutError()
        .and()
        .generatesSources(generatedKeyCreator);
  }

  @Test
  public void nestedMapKeyCreatorFile() {
    JavaFileObject enumKeyFile = JavaFileObjects.forSourceLines("test.Container",
        "package test;",
        "import dagger.MapKey;",
        "import java.lang.annotation.Retention;",
        "import static java.lang.annotation.RetentionPolicy.RUNTIME;",
        "",
        "public interface Container {",
        "@MapKey(unwrapValue = false)",
        "@Retention(RUNTIME)",
        "public @interface PathKey {",
        "  PathEnum value();",
        "  String relativePath() default \"Defaultpath\";",
        "}",
        "}");
    JavaFileObject pathEnumFile = JavaFileObjects.forSourceLines("test.PathEnum",
        "package test;",
        "",
        "public enum PathEnum {",
        "    ADMIN,",
        "    LOGIN;",
        "}");
    JavaFileObject generatedKeyCreator =
        JavaFileObjects.forSourceLines(
            "test.Container_PathKeyCreator",
            "package test;",
            "",
            GeneratedLines.generatedImports("import com.google.auto.value.AutoAnnotation;"),
            "",
            GeneratedLines.generatedAnnotations(),
            "public final class Container_PathKeyCreator {",
            "  private Container_PathKeyCreator() {}",
            "",
            "  @AutoAnnotation",
            "  public static Container.PathKey createPathKey("
                + "PathEnum value, String relativePath) {",
            "    return new AutoAnnotation_Container_PathKeyCreator_createPathKey(",
            "        value, relativePath);",
            "  }",
            "}");
    assertAbout(javaSources())
        .that(ImmutableList.of(enumKeyFile, pathEnumFile))
        .withCompilerOptions(compilerMode.javacopts())
        .processedWith(new ComponentProcessor(), new AutoAnnotationProcessor())
        .compilesWithoutError()
        .and()
        .generatesSources(generatedKeyCreator);
  }

  @Test
  public void nestedComplexMapKey_buildSuccessfully() {
    JavaFileObject outerKey =
        JavaFileObjects.forSourceLines(
            "test.OuterKey",
            "package test;",
            "import dagger.MapKey;",
            "import java.lang.annotation.Retention;",
            "import static java.lang.annotation.RetentionPolicy.RUNTIME;",
            "",
            "@MapKey(unwrapValue = false)",
            "public @interface OuterKey {",
            "  String value() default \"hello\";",
            "  NestedKey[] nestedKeys() default {};",
            "}");
    JavaFileObject nestedKey =
        JavaFileObjects.forSourceLines(
            "test.NestedKey",
            "package test;",
            "import dagger.MapKey;",
            "import java.lang.annotation.Retention;",
            "import static java.lang.annotation.RetentionPolicy.RUNTIME;",
            "",
            "@MapKey(unwrapValue = false)",
            "public @interface NestedKey {",
            " String value() default \"hello\";",
            " String otherValue() default \"world\";",
            "}");
    JavaFileObject foo =
        JavaFileObjects.forSourceLines(
            "test.FooModule",
            "package test;",
            "",
            "import dagger.multibindings.IntoMap;",
            "import dagger.Module;",
            "import dagger.Provides;",
            "",
            "@Module",
            "public final class FooModule {",
            "  @IntoMap",
            "  @OuterKey(nestedKeys = @NestedKey)",
            "  @Provides",
            "  String provideString() { return \"hello\";}",
            "}");
    JavaFileObject component =
        JavaFileObjects.forSourceLines(
            "test.MyComponent",
            "package test;",
            "",
            "import dagger.Component;",
            "import java.util.Map;",
            "",
            "@Component(modules = FooModule.class)",
            "public interface MyComponent {",
            "  Map<OuterKey, String> getFoo();",
            "}");
    assertAbout(javaSources())
        .that(ImmutableList.of(outerKey, nestedKey, foo, component))
        .withCompilerOptions(compilerMode.javacopts())
        .processedWith(new ComponentProcessor(), new AutoAnnotationProcessor())
        .compilesWithoutError();
  }
}