using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.BL.ValueObjects;

namespace Tango.BL.ActionLogs
{
    /// <summary>
    /// Represents an <see cref="IActionLogComparable"/> comparer.
    /// </summary>
    public interface IActionLogComparer
    {
        /// <summary>
        /// Compares the specified object before and after changes and returns the difference tree.
        /// </summary>
        /// <param name="before">The object before the change.</param>
        /// <param name="after">The object after the change.</param>
        /// <returns></returns>
        Task<ActionLogDifference> Compare(IActionLogComparable before, IActionLogComparable after);
    }
}