// Copyright (C) 2014 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.AcceptsCreate;
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.RestApiException;
import com.google.gerrit.extensions.restapi.RestView;
import com.google.gerrit.server.permissions.PermissionBackendException;
import com.google.gerrit.server.project.ProjectResource;
import com.google.gerrit.server.project.TagResource;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import java.io.IOException;

@Singleton
public class TagsCollection
    implements ChildCollection<ProjectResource, TagResource>, AcceptsCreate<ProjectResource> {
  private final DynamicMap<RestView<TagResource>> views;
  private final Provider<ListTags> list;
  private final CreateTag.Factory createTagFactory;

  @Inject
  public TagsCollection(
      DynamicMap<RestView<TagResource>> views,
      Provider<ListTags> list,
      CreateTag.Factory createTagFactory) {
    this.views = views;
    this.list = list;
    this.createTagFactory = createTagFactory;
  }

  @Override
  public RestView<ProjectResource> list() throws ResourceNotFoundException {
    return list.get();
  }

  @Override
  public TagResource parse(ProjectResource parent, IdString id)
      throws RestApiException, IOException, PermissionBackendException {
    parent.getProjectState().checkStatePermitsRead();
    return new TagResource(parent.getProjectState(), parent.getUser(), list.get().get(parent, id));
  }

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

  @Override
  public CreateTag create(ProjectResource resource, IdString name) {
    return createTagFactory.create(name.get());
  }
}