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// Copyright (C) 2017 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.change;

import com.google.gerrit.extensions.restapi.Response;
import com.google.gerrit.extensions.restapi.RestApiException;
import com.google.gerrit.extensions.restapi.RestModifyView;
import com.google.gerrit.extensions.webui.UiAction;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.StarredChangesUtil;
import com.google.gerrit.server.StarredChangesUtil.IllegalLabelException;
import com.google.gerrit.server.query.change.ChangeData;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

@Singleton
public class MarkAsReviewed
    implements RestModifyView, UiAction {
  private static final Logger log = LoggerFactory.getLogger(MarkAsReviewed.class);

  public static class Input {}

  private final Provider dbProvider;
  private final ChangeData.Factory changeDataFactory;
  private final StarredChangesUtil stars;

  @Inject
  MarkAsReviewed(
      Provider dbProvider,
      ChangeData.Factory changeDataFactory,
      StarredChangesUtil stars) {
    this.dbProvider = dbProvider;
    this.changeDataFactory = changeDataFactory;
    this.stars = stars;
  }

  @Override
  public Description getDescription(ChangeResource rsrc) {
    return new UiAction.Description()
        .setLabel("Mark Reviewed")
        .setTitle("Mark the change as reviewed to unhighlight it in the dashboard")
        .setVisible(!isReviewed(rsrc));
  }

  @Override
  public Response apply(ChangeResource rsrc, Input input)
      throws RestApiException, OrmException, IllegalLabelException {
    stars.markAsReviewed(rsrc);
    return Response.ok("");
  }

  private boolean isReviewed(ChangeResource rsrc) {
    try {
      return changeDataFactory
          .create(dbProvider.get(), rsrc.getNotes())
          .isReviewedBy(rsrc.getUser().asIdentifiedUser().getAccountId());
    } catch (OrmException e) {
      log.error("failed to check if change is reviewed", e);
    }
    return false;
  }
}