using System;

namespace Lucene.Net.Search
{
    /*
     * Licensed to the Apache Software Foundation (ASF) under one or more
     * contributor license agreements.  See the NOTICE file distributed with
     * this work for additional information regarding copyright ownership.
     * The ASF licenses this file to You 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.
     */

    /// <summary>
    /// A crazy <see cref="BulkScorer"/> that wraps another <see cref="BulkScorer"/>
    /// but shuffles the order of the collected documents.
    /// </summary>
    public class AssertingBulkOutOfOrderScorer : BulkScorer
    {
        internal readonly BulkScorer @in;
        internal readonly Random random;

        public AssertingBulkOutOfOrderScorer(Random random, BulkScorer @in)
        {
            this.@in = @in;
            this.random = random;
        }

        public override bool Score(ICollector collector, int max)
        {
            RandomOrderCollector randomCollector = new RandomOrderCollector(random, collector);
            bool remaining = @in.Score(randomCollector, max);
            randomCollector.Flush();
            return remaining;
        }

        public override void Score(ICollector collector)
        {
            RandomOrderCollector randomCollector = new RandomOrderCollector(random, collector);
            @in.Score(randomCollector);
            randomCollector.Flush();
        }

        public override string ToString()
        {
            return "AssertingBulkOutOfOrderScorer(" + @in + ")";
        }
    }
}