SPT-Server-Build/Libraries/SPTarkov.Server.Core/Extensions/RagfairOfferExtensions.cs

using SPTarkov.Server.Core.Models.Eft.Ragfair;
using SPTarkov.Server.Core.Models.Enums;

namespace SPTarkov.Server.Core.Extensions
{
    public static class RagfairOfferExtensions
    {
        /// <summary>
        ///     Is the passed in offer stale - end time > passed in time
        /// </summary>
        /// <param name="offer">Offer to check</param>
        /// <param name="time">Time to check offer against</param>
        /// <returns>True - offer is stale</returns>
        public static bool IsStale(this RagfairOffer offer, long time)
        {
            return offer.EndTime < time || (offer.Quantity) < 1;
        }

        /// <summary>
        ///     Does this offer come from a trader
        /// </summary>
        /// <param name="offer">Offer to check</param>
        /// <returns>True = from trader</returns>
        public static bool IsTraderOffer(this RagfairOffer offer)
        {
            if (offer.CreatedBy is not null)
            {
                return offer.CreatedBy == OfferCreator.Trader;
            }

            return offer.User.MemberType == MemberCategory.Trader;
        }

        /// <summary>
        /// Was this offer created by a human player
        /// </summary>
        /// <param name="offer"></param>
        /// <returns></returns>
        public static bool IsPlayerOffer(this RagfairOffer offer)
        {
            if (offer.CreatedBy is not null)
            {
                return offer.CreatedBy == OfferCreator.Player;
            }

            return false;
        }
    }
}