namespace Harmony.EntityPlayerRebirth
{
    internal class BagPatches
    {
        public static int numSlots = 50;

        public static MethodInfo checkBagAssigned = AccessTools.Method(typeof(Bag), "checkBagAssigned", new Type[] { typeof(int) });
        public static MethodInfo onBackpackChanged = AccessTools.Method(typeof(Bag), "onBackpackChanged", new Type[] { });

        [HarmonyPatch(typeof(Bag))]
        [HarmonyPatch("GetSlots")]
        public class GetSlots
        {
            private static bool Prefix(Bag __instance, ref ItemStack[] __result, ref global::EntityAlive ___entity, ref ItemStack[] ___items)
            {
                if (___entity.Spawned)
                {
                    float additionalRows = ___entity.Buffs.GetCustomVar("$BackpackCapacityIncrease");
                    if (additionalRows > 0)
                    {
                        numSlots = numSlots + (int)additionalRows;
                    }
                }

                checkBagAssigned.Invoke(__instance, new object[] { numSlots });

                __result = ___items;
                return false;
            }
        }

        [HarmonyPatch(typeof(Bag))]
        [HarmonyPatch("SetSlots")]
        public class SetSlots
        {
            private static bool Prefix(Bag __instance, ItemStack[] _slots, ref global::EntityAlive ___entity, ref ItemStack[] ___items, ref XUiEvent_BackpackItemsChangedInternal ___OnBackpackItemsChangedInternal)
            {
                if (___entity.Spawned)
                {
                    float additionalRows = ___entity.Buffs.GetCustomVar("$BackpackCapacityIncrease");
                    if (additionalRows > 0)
                    {
                        numSlots = numSlots + (int)additionalRows;
                    }
                }

                checkBagAssigned.Invoke(__instance, new object[] { numSlots });
                ___items = _slots;
                onBackpackChanged.Invoke(__instance, new object[] { });

                return false;
            }
        }
    }
}