/*
 * Copyright (C) 2013 The Android Open Source Project
 *
 * 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.android.tools.idea.jps.builder;

import com.android.SdkConstants;
import com.android.tools.idea.jps.AndroidGradleJps;
import com.android.tools.idea.jps.model.JpsAndroidGradleModuleExtension;
import com.google.common.collect.ImmutableList;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.jps.ModuleChunk;
import org.jetbrains.jps.android.AndroidSourceGeneratingBuilder;
import org.jetbrains.jps.builders.DirtyFilesHolder;
import org.jetbrains.jps.builders.java.JavaSourceRootDescriptor;
import org.jetbrains.jps.incremental.BuilderCategory;
import org.jetbrains.jps.incremental.CompileContext;
import org.jetbrains.jps.incremental.ModuleBuildTarget;
import org.jetbrains.jps.incremental.ModuleLevelBuilder;
import org.jetbrains.jps.incremental.java.JavaBuilder;
import org.jetbrains.jps.incremental.resources.ResourcesBuilder;
import org.jetbrains.jps.incremental.resources.StandardResourceBuilderEnabler;
import org.jetbrains.jps.model.JpsProject;
import org.jetbrains.jps.model.module.JpsModule;

import java.util.List;

/**
 * The only purpose of this builder is to disable all instances of {@link ModuleLevelBuilder} that are not related to Gradle.
 */
public class AndroidGradleBuilder extends ModuleLevelBuilder {
  @NonNls private static final String BUILDER_NAME = "Android Gradle Builder";

  protected AndroidGradleBuilder() {
    super(BuilderCategory.TRANSLATOR);
    ResourcesBuilder.registerEnabler(new StandardResourceBuilderEnabler() {
      @Override
      public boolean isResourceProcessingEnabled(JpsModule module) {
        JpsProject project = module.getProject();
        return !AndroidGradleJps.hasAndroidGradleFacet(project);
      }
    });
  }

  /**
   * Disables IDEA's Java and Android builders for Gradle-imported projects. They are no longer needed since we build with Gradle.
   */
  @Override
  public void buildStarted(CompileContext context) {
    JpsProject project = context.getProjectDescriptor().getProject();
    if (AndroidGradleJps.hasAndroidGradleFacet(project)) {
      JavaBuilder.IS_ENABLED.set(context, false);
      AndroidSourceGeneratingBuilder.IS_ENABLED.set(context, false);
    }
  }

  /**
   * It does nothing.
   *
   * @return {@link ExitCode#OK} if the modules to build are Gradle ones, otherwise it returns {@link ExitCode#NOTHING_DONE}.
   */
  @NotNull
  @Override
  public ExitCode build(CompileContext context,
                        ModuleChunk chunk,
                        DirtyFilesHolder<JavaSourceRootDescriptor, ModuleBuildTarget> dirtyFilesHolder,
                        OutputConsumer outputConsumer) {
    JpsAndroidGradleModuleExtension extension = AndroidGradleJps.getFirstExtension(chunk);
    if (extension == null) {
      return ExitCode.NOTHING_DONE;
    }
    return ExitCode.OK;
  }

  @NotNull
  @Override
  public String getPresentableName() {
    return BUILDER_NAME;
  }

  @NotNull
  @Override
  public List<String> getCompilableFileExtensions() {
    return ImmutableList.of(SdkConstants.EXT_AIDL, SdkConstants.EXT_FS, SdkConstants.EXT_JAVA, SdkConstants.EXT_RS);
  }
}