// Copyright (C) 2016 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.googlesource.gerrit.plugins.uploadvalidator;

import static com.google.common.truth.Truth.assertThat;
import static com.googlesource.gerrit.plugins.uploadvalidator.TestUtils.EMPTY_PLUGIN_CONFIG;

import com.google.gerrit.server.git.validators.CommitValidationMessage;
import java.io.File;
import java.io.IOException;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.junit.Test;

public class InvalidFilenameValidatorTest extends ValidatorTestCase {
  private static Set<String> getInvalidFilenames() {
    Set<String> filenames = new HashSet<>();
    filenames.add("test#");
    filenames.add("test%");
    filenames.add("test*");
    filenames.add("test:");
    filenames.add("test@");
    filenames.add("test[");
    filenames.add("test]");
    return filenames;
  }

  private RevCommit makeCommit(RevWalk rw) throws IOException, GitAPIException {
    Set<File> files = new HashSet<>();
    for (String filenames : getInvalidFilenames()) {
      files.add(new File(repo.getDirectory().getParent(), filenames));
    }
    // valid filename
    files.add(new File(repo.getDirectory().getParent(), "test"));
    return TestUtils.makeCommit(rw, repo, "Commit with empty test files.", files);
  }

  @Test
  public void test() throws Exception {
    String[] invalidFilenamePattern = {"\\[|\\]|\\*|#", "[%:@]"};
    try (RevWalk rw = new RevWalk(repo)) {
      RevCommit c = makeCommit(rw);
      List<CommitValidationMessage> m =
          InvalidFilenameValidator.performValidation(repo, c, rw, invalidFilenamePattern);
      Set<String> expected = new HashSet<>();
      for (String filenames : getInvalidFilenames()) {
        expected.add("ERROR: invalid characters found in filename: " + filenames);
      }
      assertThat(TestUtils.transformMessages(m)).containsExactlyElementsIn(expected);
    }
  }

  @Test
  public void validatorInactiveWhenConfigEmpty() {
    assertThat(InvalidFilenameValidator.isActive(EMPTY_PLUGIN_CONFIG)).isFalse();
  }
}