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/*
 * Copyright (c) 2014-2022 Aurélien Broszniowski
 *
 * 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 io.rainfall.statistics;

import io.rainfall.statistics.collector.StatisticsCollector;
import io.rainfall.statistics.exporter.Exporter;
import org.HdrHistogram.Histogram;

import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @author Aurelien Broszniowski
 */
public class StatisticsPeekHolder> {
  public final static String ALL = "ALL";
  private final Enum[] resultsReported;
  private final ConcurrentHashMap assertionsErrors;
  private final RainfallHistogramSink histograms;
  private final long startTime;

  private Map> statisticsPeeks = new ConcurrentHashMap>();
  private Map extraCollectedStatistics = new ConcurrentHashMap();
  private StatisticsPeek totalStatisticsPeeks = null;
  private long timestamp;

  public StatisticsPeekHolder(final Enum[] resultsReported, final Map> statisticsMap,
                              final Set statisticsCollectors,
                              final ConcurrentHashMap assertionsErrors, RainfallHistogramSink histograms,
                              long startTime) {
    this.resultsReported = resultsReported;
    this.assertionsErrors = assertionsErrors;
    this.histograms = histograms;
    this.startTime = startTime;
    this.timestamp = System.currentTimeMillis();
    for (String name : statisticsMap.keySet()) {
      statisticsPeeks.put(name, statisticsMap.get(name).peek(timestamp));
    }
    this.totalStatisticsPeeks = new StatisticsPeek(ALL, this.resultsReported, this.timestamp);
    totalStatisticsPeeks.addAll(statisticsPeeks);

    for (StatisticsCollector statisticsCollector : statisticsCollectors) {
      extraCollectedStatistics.put(statisticsCollector.getName(), statisticsCollector.peek());
    }
  }

  public StatisticsPeek getStatisticsPeeks(String name) {
    return statisticsPeeks.get(name);
  }

  public Long getAssertionsErrorsCount(String name) {return assertionsErrors.get(name).longValue();}

  public Set getStatisticsPeeksNames() {
    return statisticsPeeks.keySet();
  }

  public StatisticsPeek getTotalStatisticsPeeks() {
    return totalStatisticsPeeks;
  }

  public long getTimestamp() {
    return timestamp;
  }

  public long getStartTime() {
    return startTime;
  }

  public Enum[] getResultsReported() {
    return resultsReported;
  }

  public Map getExtraCollectedStatistics() {
    return extraCollectedStatistics;
  }

  public Long getTotalAssertionsErrorsCount() {
    Long totalAssertionsErrorsCount = 0L;
    for (LongAdder count : assertionsErrors.values()) {
      totalAssertionsErrorsCount += count.longValue();
    }
    return totalAssertionsErrorsCount;
  }

  public Histogram fetchHistogram(final Enum result) {
    return histograms.fetchHistogram(result);
  }

}