namespace Supercell.Laser.Logic.Command.Home
{
    using System.Linq;
    using Supercell.Laser.Logic.Data;
    using Supercell.Laser.Logic.Data.Helper;
    using Supercell.Laser.Logic.Home;
    using Supercell.Laser.Titan.DataStream;
    using Supercell.Laser.Titan.Debug;

    public class LogicPurchaseBrawlPassProgressCommand : Command
    {
        public int Unknown { get; set; }

        public override void Decode(ByteStream stream)
        {
            base.Decode(stream);
            Unknown = stream.ReadVInt();
        }

        public override int Execute(HomeMode homeMode)
        {
            int before = homeMode.Home.BrawlPassTokens;

            // Find the milestone that contains current tokens OR the next one ahead
            var milestones = DataTables.Get(DataType.Milestone)
                .GetDatas()
                .OfType<MilestoneData>()
                .Where(m => m != null && m.Progress > 0)
                .OrderBy(m => m.ProgressStart)
                .ToList();

            // Find current milestone (the one we're inside right now)
            MilestoneData current = milestones.LastOrDefault(m => m.ProgressStart <= before);
            if (current == null)
            {
                Debugger.Print($"[BrawlPass] No milestone found for tokens={before}");
                return 0;
            }

            int target = current.ProgressStart + current.Progress;

            // If already at or past end of current milestone, advance to next
            if (before >= target)
            {
                MilestoneData next = milestones.FirstOrDefault(m => m.ProgressStart >= target);
                if (next == null)
                {
                    Debugger.Print($"[BrawlPass] Already at max milestone, tokens={before}");
                    return 0;
                }
                target = next.ProgressStart + next.Progress;
            }

            if (!homeMode.Avatar.UseDiamonds(30))
            {
                Debugger.Print($"[BrawlPass] Not enough diamonds for {homeMode.Avatar.Name}#{homeMode.Avatar.AccountId}");
                return -1;
            }

            homeMode.Home.BrawlPassTokens = target;

            Debugger.Print($"[BrawlPass] {homeMode.Avatar.Name}#{homeMode.Avatar.AccountId}: {before} -> {target} (milestone {current.Name}, +{target - before} tokens, -30 gems)");

            return 0;
        }

        public override int GetCommandType() => 536;
    }
}