/**
/// Accumulates change statics
 */
import { ChangeStatistics } from './ChangeStatistics';

export class ChangeSummary {
    private readonly _index: number;

    /**
    /// An empty instance of change summary
     */
    public static readonly empty = new ChangeSummary();

    /**
    ///     Initializes a new instance of the <see cref="T:System.Object" /> class.
     */
    public constructor(index?: number, latest?: ChangeStatistics, overall?: ChangeStatistics) {
        this.latest = latest ?? new ChangeStatistics();
        this.overall = overall ?? new ChangeStatistics();
        this._index = index ?? -1;
    }

    /**
/// Gets the latest change
 */
    /// <value>
    /// The latest.
    /// </value>
    public readonly latest: ChangeStatistics;

    /**
/// Gets the overall change count
 */
    /// <value>
    /// The overall.
    /// </value>
    public readonly overall: ChangeStatistics;

    /// <inheritdoc />
    public toString() {
        return `CurrentIndex: ${this._index}, Latest Size: ${this.latest.count}, Overall Size: ${this.overall.count}`;
    }
}