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// 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.google.gerrit.server.restapi.project;

import com.google.gerrit.extensions.registration.DynamicMap;
import com.google.gerrit.extensions.restapi.ChildCollection;
import com.google.gerrit.extensions.restapi.IdString;
import com.google.gerrit.extensions.restapi.ResourceNotFoundException;
import com.google.gerrit.extensions.restapi.RestView;
import com.google.gerrit.server.git.GitRepositoryManager;
import com.google.gerrit.server.project.BranchResource;
import com.google.gerrit.server.project.FileResource;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.io.IOException;
import org.eclipse.jgit.lib.ObjectId;

@Singleton
public class FilesCollection implements ChildCollection {
  private final DynamicMap> views;
  private final GitRepositoryManager repoManager;

  @Inject
  FilesCollection(DynamicMap> views, GitRepositoryManager repoManager) {
    this.views = views;
    this.repoManager = repoManager;
  }

  @Override
  public RestView list() throws ResourceNotFoundException {
    throw new ResourceNotFoundException();
  }

  @Override
  public FileResource parse(BranchResource parent, IdString id)
      throws ResourceNotFoundException, IOException {
    if (parent.getRevision().isEmpty()) {
      throw new ResourceNotFoundException(id);
    }
    return FileResource.create(
        repoManager,
        parent.getProjectState(),
        ObjectId.fromString(parent.getRevision().get()),
        id.get());
  }

  @Override
  public DynamicMap> views() {
    return views;
  }
}