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/*
   Copyright 2013-2018 Immutables Authors and Contributors

   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 org.immutables.check;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;
import javax.annotation.Nullable;
import org.hamcrest.CoreMatchers;
import org.hamcrest.Matcher;
import org.hamcrest.Matchers;

/**
 * The iterable match wrapper.
 * @param  the generic type
 * @param  the generic type
 */
@SuppressWarnings("unchecked")
public class IterableChecker, T> extends ObjectChecker {

  IterableChecker(@Nullable Z value, boolean negate) {
    super(value, negate);
  }

  @Override
  public IterableChecker not() {
    ensureNonNegative();
    return new IterableChecker<>(actualValue, true);
  }

  public void any(Matcher elementMatcher) {
    verifyUsingMatcher(CoreMatchers.hasItem(elementMatcher));
  }

  public void every(Matcher elementMatcher) {
    verifyUsingMatcher(CoreMatchers.everyItem(elementMatcher));
  }

  public void has(T element) {
    verifyUsingMatcher(CoreMatchers.hasItem(element));
  }

  @SafeVarargs
  public final void hasAll(T... elements) {
    verifyUsingMatcher(CoreMatchers.hasItems(elements));
  }

  public final void hasAll(Iterable elements) {
    verifyUsingMatcher(CoreMatchers.hasItems((T[]) Iterables.toArray(elements, Object.class)));
  }

  public void isOf(Iterable elements) {
    verifyUsingMatcher(Matchers.contains(Iterables.toArray(elements, Object.class)));
  }

  @SafeVarargs
  public final void isOf(T... elements) {
    verifyUsingMatcher(Matchers.contains(elements));
  }

  public void hasContentInAnyOrder(Iterable elements) {
    verifyUsingMatcher(Matchers.containsInAnyOrder(Iterables.toArray(elements, Object.class)));
  }

  @SafeVarargs
  public final void hasContentInAnyOrder(T... elements) {
    verifyUsingMatcher(Matchers.containsInAnyOrder(elements));
  }

  public void hasSize(int size) {
    new IterableChecker<>(ImmutableList.copyOf(actualValue), negate).verifyUsingMatcher(Matchers.hasSize(size));
  }

  public void notEmpty() {
    verifyUsingMatcher(Matchers.not(Matchers.emptyIterable()));
  }

  public void isEmpty() {
    verifyUsingMatcher(Matchers.emptyIterable());
  }

}