// 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.git.strategy;

import com.google.gerrit.reviewdb.client.Change;
import com.google.gerrit.server.change.Submit.TestSubmitInput;
import com.google.gerrit.server.update.BatchUpdateOp;
import com.google.gerrit.server.update.RepoContext;
import com.google.gerrit.server.util.RequestId;
import java.io.IOException;
import java.util.Queue;
import org.eclipse.jgit.lib.ObjectId;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

class TestHelperOp implements BatchUpdateOp {
  private static final Logger log = LoggerFactory.getLogger(TestHelperOp.class);

  private final Change.Id changeId;
  private final TestSubmitInput input;
  private final RequestId submissionId;

  TestHelperOp(Change.Id changeId, SubmitStrategy.Arguments args) {
    this.changeId = changeId;
    this.input = (TestSubmitInput) args.submitInput;
    this.submissionId = args.submissionId;
  }

  @Override
  public void updateRepo(RepoContext ctx) throws IOException {
    Queue<Boolean> q = input.generateLockFailures;
    if (q != null && !q.isEmpty() && q.remove()) {
      logDebug("Adding bogus ref update to trigger lock failure, via change {}", changeId);
      ctx.addRefUpdate(
          ObjectId.fromString("deadbeefdeadbeefdeadbeefdeadbeefdeadbeef"),
          ObjectId.zeroId(),
          "refs/test/" + getClass().getSimpleName());
    }
  }

  private void logDebug(String msg, Object... args) {
    if (log.isDebugEnabled()) {
      log.debug(submissionId + msg, args);
    }
  }
}