/*
 * Copyright 2016 The Bazel Authors. All rights reserved.
 *
 * 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.google.idea.blaze.base.sync.aspects;

import com.google.idea.blaze.base.command.BlazeCommand;
import com.google.repackaged.devtools.build.lib.ideinfo.androidstudio.AndroidStudioIdeInfo;
import com.google.repackaged.protobuf.TextFormat;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

/** Indirection for our various ways of calling the aspect. */
public interface AspectStrategy {

  String getName();

  void modifyIdeInfoCommand(BlazeCommand.Builder blazeCommandBuilder);

  void modifyIdeResolveCommand(BlazeCommand.Builder blazeCommandBuilder);

  String getAspectOutputFileExtension();

  AndroidStudioIdeInfo.RuleIdeInfo readAspectFile(File file) throws IOException;

  AspectStrategy NATIVE_ASPECT =
      new AspectStrategy() {
        @Override
        public String getName() {
          return "NativeAspect";
        }

        @Override
        public void modifyIdeInfoCommand(BlazeCommand.Builder blazeCommandBuilder) {
          blazeCommandBuilder
              .addBlazeFlags("--aspects=AndroidStudioInfoAspect")
              .addBlazeFlags("--output_groups=ide-info");
        }

        @Override
        public void modifyIdeResolveCommand(BlazeCommand.Builder blazeCommandBuilder) {
          blazeCommandBuilder
              .addBlazeFlags("--aspects=AndroidStudioInfoAspect")
              .addBlazeFlags("--output_groups=ide-resolve");
        }

        @Override
        public String getAspectOutputFileExtension() {
          return ".aswb-build";
        }

        @Override
        public AndroidStudioIdeInfo.RuleIdeInfo readAspectFile(File file) throws IOException {
          try (InputStream inputStream = new FileInputStream(file)) {
            return AndroidStudioIdeInfo.RuleIdeInfo.parseFrom(inputStream);
          }
        }
      };

  AspectStrategy SKYLARK_ASPECT =
      new AspectStrategy() {
        @Override
        public String getName() {
          return "SkylarkAspect";
        }

        private void addAspectFlag(BlazeCommand.Builder blazeCommandBuilder) {
          blazeCommandBuilder.addBlazeFlags(
              "--aspects=//third_party/bazel/src/test/java/com/google/devtools/build/lib/ideinfo/intellij_info.bzl%intellij_info_aspect");
        }

        @Override
        public void modifyIdeInfoCommand(BlazeCommand.Builder blazeCommandBuilder) {
          addAspectFlag(blazeCommandBuilder);
          blazeCommandBuilder.addBlazeFlags("--output_groups=ide-info-text");
        }

        @Override
        public void modifyIdeResolveCommand(BlazeCommand.Builder blazeCommandBuilder) {
          addAspectFlag(blazeCommandBuilder);
          blazeCommandBuilder.addBlazeFlags("--output_groups=ide-resolve");
        }

        @Override
        public String getAspectOutputFileExtension() {
          return ".intellij-build.txt";
        }

        @Override
        public AndroidStudioIdeInfo.RuleIdeInfo readAspectFile(File file) throws IOException {
          try (InputStream inputStream = new FileInputStream(file)) {
            AndroidStudioIdeInfo.RuleIdeInfo.Builder builder =
                AndroidStudioIdeInfo.RuleIdeInfo.newBuilder();
            TextFormat.Parser parser =
                TextFormat.Parser.newBuilder().setAllowUnknownFields(true).build();
            parser.merge(new InputStreamReader(inputStream), builder);
            return builder.build();
          }
        }
      };
}