// Copyright 2015 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.devtools.build.lib.runtime.commands;

import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.buildtool.BuildRequest;
import com.google.devtools.build.lib.buildtool.BuildTool;
import com.google.devtools.build.lib.events.Event;
import com.google.devtools.build.lib.rules.android.WriteAdbArgsAction;
import com.google.devtools.build.lib.rules.android.WriteAdbArgsAction.StartType;
import com.google.devtools.build.lib.runtime.BlazeCommand;
import com.google.devtools.build.lib.runtime.BlazeRuntime;
import com.google.devtools.build.lib.runtime.Command;
import com.google.devtools.build.lib.runtime.CommandEnvironment;
import com.google.devtools.build.lib.util.AbruptExitException;
import com.google.devtools.build.lib.util.ExitCode;
import com.google.devtools.common.options.Option;
import com.google.devtools.common.options.OptionPriority;
import com.google.devtools.common.options.OptionsBase;
import com.google.devtools.common.options.OptionsParser;
import com.google.devtools.common.options.OptionsParsingException;
import com.google.devtools.common.options.OptionsProvider;

import java.util.List;

/**
 * Implementation of the 'mobile-install' command.
 */
 @Command(name = "mobile-install",
         builds = true,
         options = { MobileInstallCommand.Options.class, WriteAdbArgsAction.Options.class },
         inherits = { BuildCommand.class },
         shortDescription = "Installs targets to mobile devices.",
         completion = "label",
         allowResidue = true,
         help = "resource:mobile-install.txt")
public class MobileInstallCommand implements BlazeCommand {
  /**
   * Command line options for the 'mobile-install' command.
   */
  public static final class Options extends OptionsBase {
    @Option(name = "split_apks",
        defaultValue = "false",
        category = "undocumented")
    public boolean splitApks;

    @Option(name = "incremental",
        category = "mobile-install",
        defaultValue = "false",
        help = "Whether to do an incremental install. If true, try to avoid unnecessary additional "
            + "work by reading the state of the device the code is to be installed on and using "
            + "that information to avoid unnecessary work. If false (the default), always do a "
            + "full install.")
    public boolean incremental;
  }

  @Override
  public ExitCode exec(CommandEnvironment env, OptionsProvider options) {
    BlazeRuntime runtime = env.getRuntime();
    Options mobileInstallOptions = options.getOptions(Options.class);
    WriteAdbArgsAction.Options adbOptions = options.getOptions(WriteAdbArgsAction.Options.class);
    if (adbOptions.start == StartType.WARM && !mobileInstallOptions.incremental) {
      env.getReporter().handle(Event.warn(
         "Warm start is enabled, but will have no effect on a non-incremental build"));
    }

    List<String> targets = ProjectFileSupport.getTargets(runtime, options);
    BuildRequest request = BuildRequest.create(
        this.getClass().getAnnotation(Command.class).name(), options,
        runtime.getStartupOptionsProvider(), targets,
        env.getReporter().getOutErr(), env.getCommandId(), env.getCommandStartTime());
    return new BuildTool(env).processRequest(request, null).getExitCondition();
  }

  @Override
  public void editOptions(CommandEnvironment env, OptionsParser optionsParser)
      throws AbruptExitException {
    try {
      String outputGroup =
          optionsParser.getOptions(Options.class).splitApks ? "mobile_install_split"
          : optionsParser.getOptions(Options.class).incremental ? "mobile_install_incremental"
          : "mobile_install_full";

      optionsParser.parse(OptionPriority.COMMAND_LINE,
          "Options required by the mobile-install command",
          ImmutableList.of("--output_groups=" + outputGroup));
    } catch (OptionsParsingException e) {
      throw new IllegalStateException(e);
    }
  }
}