/*
 * Copyright 2015-present Facebook, Inc.
 *
 * 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 com.facebook.buck.js;

import com.facebook.buck.model.BuildTarget;
import com.facebook.buck.model.Flavor;
import com.facebook.buck.model.Flavored;
import com.facebook.buck.rules.BuildRuleParams;
import com.facebook.buck.rules.BuildRuleResolver;
import com.facebook.buck.rules.BuildTargetSourcePath;
import com.facebook.buck.rules.CellPathResolver;
import com.facebook.buck.rules.Description;
import com.facebook.buck.rules.ImplicitDepsInferringDescription;
import com.facebook.buck.rules.SourcePath;
import com.facebook.buck.rules.TargetGraph;
import com.facebook.buck.util.RichStream;
import com.facebook.buck.util.immutables.BuckStyleImmutable;
import com.google.common.base.Supplier;
import com.google.common.collect.ImmutableCollection;
import com.google.common.collect.ImmutableSet;
import java.util.Optional;
import org.immutables.value.Value;

public class AndroidReactNativeLibraryDescription
    implements Description<AndroidReactNativeLibraryDescriptionArg>,
        Flavored,
        ImplicitDepsInferringDescription<
            AndroidReactNativeLibraryDescription.AbstractAndroidReactNativeLibraryDescriptionArg> {

  private final ReactNativeLibraryGraphEnhancer enhancer;
  private final Supplier<SourcePath> packager;

  public AndroidReactNativeLibraryDescription(final ReactNativeBuckConfig buckConfig) {
    this.enhancer = new ReactNativeLibraryGraphEnhancer(buckConfig);
    this.packager = buckConfig::getPackagerSourcePath;
  }

  @Override
  public Class<AndroidReactNativeLibraryDescriptionArg> getConstructorArgType() {
    return AndroidReactNativeLibraryDescriptionArg.class;
  }

  @Override
  public AndroidReactNativeLibrary createBuildRule(
      TargetGraph targetGraph,
      BuildRuleParams params,
      BuildRuleResolver resolver,
      CellPathResolver cellRoots,
      AndroidReactNativeLibraryDescriptionArg args) {
    return enhancer.enhanceForAndroid(params, resolver, args);
  }

  @Override
  public boolean hasFlavors(ImmutableSet<Flavor> flavors) {
    return ReactNativeFlavors.validateFlavors(flavors);
  }

  @Override
  public void findDepsForTargetFromConstructorArgs(
      BuildTarget buildTarget,
      CellPathResolver cellRoots,
      AbstractAndroidReactNativeLibraryDescriptionArg constructorArg,
      ImmutableCollection.Builder<BuildTarget> extraDepsBuilder,
      ImmutableCollection.Builder<BuildTarget> targetGraphOnlyDepsBuilder) {
    RichStream.of(packager.get())
        .filter(BuildTargetSourcePath.class)
        .map(BuildTargetSourcePath::getTarget)
        .forEach(extraDepsBuilder::add);
  }

  @BuckStyleImmutable
  @Value.Immutable
  interface AbstractAndroidReactNativeLibraryDescriptionArg extends CoreReactNativeLibraryArg {
    /** For R.java */
    Optional<String> getPackage();
  }
}