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using System;
namespace Oxide.Plugins
{
    [Info("SupplySignalMiniCopter", "bmgjet", "1.0.0")]
    [Description("Gives a skinned supply signal and, when thrown, spawns a mini copter instead of a normal supply drop if the signal uses the special skin.")]
    public class SupplySignalMiniCopter : RustPlugin
    {
        // Skin ID to check
        private const ulong SpecialSkinId = 2144524645UL;
        //Prefabs
        private const string SupplySignalItemShortname = "supply.signal";
        private const string MiniCopterPrefab = "assets/content/vehicles/minicopter/minicopter.entity.prefab";

        public void GivePlayerSS(BasePlayer player)
        {
            if (player == null) return;
            Item item = ItemManager.CreateByName(SupplySignalItemShortname, 1);
            if (item == null) { return; }

            try
            {
                item.skin = SpecialSkinId;
                item.GetHeldEntity().skinID = SpecialSkinId;
                item.MarkDirty();
                player.GiveItem(item);
            }
            catch (Exception ex) { player.ChatMessage("[SupplySignalMiniCopter] Failed to give item: " + ex.Message); }
        }

        public void SpawnMiniCopter(BasePlayer player, BaseEntity entity)
        {
            var pos = entity.transform.position;
            entity.Kill();
            var mini = GameManager.server.CreateEntity(MiniCopterPrefab, pos);
            if (mini != null)
            {
                mini.Spawn();
                mini.OwnerID = player.userID;
                Puts($"Spawned mini copter for {player.displayName} at {pos} using special supply signal.");
                timer.Once(2f, () =>
                {
                    if (mini != null)
                    {
                        IFuelSystem fuelSystem = (mini as PlayerHelicopter).GetFuelSystem();
                        if (fuelSystem is EntityFuelSystem entityFuelSystem)
                        {
                            StorageContainer fuelContainer = entityFuelSystem.GetFuelContainer();
                            if (fuelContainer != null)
                            {
                                (mini as PlayerHelicopter).fuelPerSec = 0f;
                                fuelContainer.inventory.AddItem(fuelContainer.allowedItem, 1);
                                fuelContainer.SetFlagLocal(BaseEntity.Flags.Locked, true);
                            }
                        }

                    }
                });
            }
        }

        private void Init()
        {
            cmd.AddChatCommand("gss", this, nameof(CmdGiveSupplySignal)); // alias
        }

        private void CmdGiveSupplySignal(BasePlayer player, string command, string[] args)
        {
            if (player == null || !player.IsAdmin) return;
            GivePlayerSS(player);
        }

        private void OnExplosiveDropped(BasePlayer player, BaseEntity entity) => OnExplosiveThrown(player, entity);

        private void OnExplosiveThrown(BasePlayer player, BaseEntity entity)
        {
            if (entity == null) return;
            if (entity.ShortPrefabName != "grenade.supplysignal.deployed") return;
            if (entity.skinID != SpecialSkinId) return; // normal signal, let default behaviour run
            timer.Once(1.5f, () => { if (entity != null) { SpawnMiniCopter(player, entity); } });
        }

        object OnHammerHit(BasePlayer ownerPlayer, HitInfo info)
        {
            if (ownerPlayer == null || !(info?.HitEntity is Minicopter)) { return null; }
            //Check has reload down and permission
            if (info.HitEntity.OwnerID == ownerPlayer.userID && !ownerPlayer.IsBuildingBlocked())
            {
                Minicopter minicopter = info?.HitEntity as Minicopter;
                if (minicopter != null &&  ownerPlayer.serverInput.IsDown(BUTTON.RELOAD))
                {
                    if (minicopter.health == minicopter.MaxHealth())
                    {
                        minicopter.Kill();
                        GivePlayerSS(ownerPlayer);
                        ownerPlayer.ChatMessage("Minicopter Picked Up");
                        return true;
                    }
                    else { ownerPlayer.ChatMessage("Minicopter Must Have Full Health To Pick Up"); return true; }
                }
            }
            return null;
        }
    }
}