/*
 * Copyright 2014-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.rules;

import com.google.common.collect.ImmutableCollection;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSortedSet;
import java.io.IOException;
import java.nio.file.Path;

public class HashedFileTool implements Tool {

  private final Path path;

  public HashedFileTool(Path path) {
    this.path = path;
  }

  @Override
  @SuppressWarnings("deprecation")
  public void appendToRuleKey(RuleKeyObjectSink sink) {
    try {
      sink.setPath(path.toAbsolutePath(), path);
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
  }

  @Override
  public ImmutableCollection<BuildRule> getDeps(SourcePathRuleFinder ruleFinder) {
    return ImmutableSortedSet.of();
  }

  @Override
  public ImmutableCollection<SourcePath> getInputs() {
    return ImmutableSortedSet.of();
  }

  @Override
  public ImmutableList<String> getCommandPrefix(SourcePathResolver resolver) {
    return ImmutableList.of(path.toString());
  }

  @Override
  public ImmutableMap<String, String> getEnvironment(SourcePathResolver resolver) {
    return ImmutableMap.of();
  }
}