/*
 * Copyright (c) 2011 Google Inc.
 *
 * All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse
 * Public License v1.0 which accompanies this distribution, and is available at
 *
 * http://www.eclipse.org/legal/epl-v10.html
 */
package com.google.eclipse.protobuf.junit.matchers;

import static com.google.common.collect.Lists.newArrayList;

import java.util.Arrays;
import java.util.List;

import org.hamcrest.Description;
import org.hamcrest.TypeSafeMatcher;

import com.google.eclipse.protobuf.junit.IEObjectDescriptions;

/**
 * @author alruiz@google.com (Alex Ruiz)
 */
public class ContainAllNames extends TypeSafeMatcher<IEObjectDescriptions> {
  private final String[] expectedNames;

  public static ContainAllNames containAll(String... names) {
    return new ContainAllNames(names);
  }

  private ContainAllNames(String... names) {
    super(IEObjectDescriptions.class);
    expectedNames = names;
  }

  @Override public boolean matchesSafely(IEObjectDescriptions item) {
    List<String> names = newArrayList(item.names());
    if (names.size() != expectedNames.length) {
      return false;
    }
    for (String name : expectedNames) {
      boolean removed = names.remove(name);
      if (!removed) {
        return false;
      }
    }
    return names.isEmpty();
  }

  @Override public void describeTo(Description description) {
    description.appendValue(Arrays.toString(expectedNames));
  }
}