/*
 * This is a AssemblyScript port of the original Java version, which was written by
 * Gil Tene as described in
 * https://github.com/HdrHistogram/HdrHistogram
 * and released to the public domain, as explained at
 * http://creativecommons.org/publicdomain/zero/1.0/
 */

/**
 * Represents a value point iterated through in a Histogram, with associated stats.
 * <ul>
 * <li><b><code>valueIteratedTo</code></b> :<br> The actual value level that was iterated to by the iterator</li>
 * <li><b><code>prevValueIteratedTo</code></b> :<br> The actual value level that was iterated from by the iterator</li>
 * <li><b><code>countAtValueIteratedTo</code></b> :<br> The count of recorded values in the histogram that
 * exactly match this [lowestEquivalentValue(valueIteratedTo)...highestEquivalentValue(valueIteratedTo)] value
 * range.</li>
 * <li><b><code>countAddedInThisIterationStep</code></b> :<br> The count of recorded values in the histogram that
 * were added to the totalCountToThisValue (below) as a result on this iteration step. Since multiple iteration
 * steps may occur with overlapping equivalent value ranges, the count may be lower than the count found at
 * the value (e.g. multiple linear steps or percentile levels can occur within a single equivalent value range)</li>
 * <li><b><code>totalCountToThisValue</code></b> :<br> The total count of all recorded values in the histogram at
 * values equal or smaller than valueIteratedTo.</li>
 * <li><b><code>totalValueToThisValue</code></b> :<br> The sum of all recorded values in the histogram at values
 * equal or smaller than valueIteratedTo.</li>
 * <li><b><code>percentile</code></b> :<br> The percentile of recorded values in the histogram at values equal
 * or smaller than valueIteratedTo.</li>
 * <li><b><code>percentileLevelIteratedTo</code></b> :<br> The percentile level that the iterator returning this
 * HistogramIterationValue had iterated to. Generally, percentileLevelIteratedTo will be equal to or smaller than
 * percentile, but the same value point can contain multiple iteration levels for some iterators. E.g. a
 * PercentileIterator can stop multiple times in the exact same value point (if the count at that value covers a
 * range of multiple percentiles in the requested percentile iteration points).</li>
 * </ul>
 */
class HistogramIterationValue {
  valueIteratedTo: u64;
  valueIteratedFrom: u64;
  countAtValueIteratedTo: u64;
  countAddedInThisIterationStep: u64;
  totalCountToThisValue: u64;
  totalValueToThisValue: u64;
  percentile: f64;
  percentileLevelIteratedTo: f64;

  constructor() {
    this.reset();
  }

  reset(): void {
    this.valueIteratedTo = 0;
    this.valueIteratedFrom = 0;
    this.countAtValueIteratedTo = 0;
    this.countAddedInThisIterationStep = 0;
    this.totalCountToThisValue = 0;
    this.totalValueToThisValue = 0;
    this.percentile = 0.0;
    this.percentileLevelIteratedTo = 0.0;
  }
}

export default HistogramIterationValue;