#pragma warning disable IDE0051 // Remove unused private members

namespace Harmony.StopFuelWastePatches
{
    public class StopFuelWaste
    {
        [HarmonyPatch(typeof(TileEntityWorkstation), "HandleFuel")]
        public class TileEntityWorkstation_HandleFuel
        {
            static float GetAllRecipeTimes(TileEntityWorkstation __instance)
            {
                float crafting = 0;
                if (__instance.Queue == null) return crafting;
                foreach (RecipeQueueItem recipe in __instance.Queue)
                {
                    if (recipe == null) continue;
                    if (recipe.Multiplier > 1)
                    {
                        crafting += recipe.OneItemCraftTime * (recipe.Multiplier - 1f);
                    }
                    crafting += recipe.CraftingTimeLeft;
                }
                return crafting;
            }

            static bool CanSmeltStackItemHere(
                TileEntityWorkstation __instance,
                ItemClass item)
            {
                if (item.MadeOfMaterial.ForgeCategory is string category)
                {
                    foreach (string name in __instance.MaterialNames)
                    {
                        if (category.EqualsCaseInsensitive(name)) return true;
                    }
                }
                return false;
            }

            static float GetItemStackSmeltingTime(
                TileEntityWorkstation __instance,
                bool[] ___isModuleUsed,
                float timeLeft,
                ItemStack stack)
            {
                if (ItemClass.GetForId(stack.itemValue.type) is ItemClass item)
                {
                    if (CanSmeltStackItemHere(__instance, item))
                    {
                        float smeltOneTime = item.GetWeight() * (item.MeltTimePerUnit > 0.0 ? item.MeltTimePerUnit : 1f);
                        // Do we support tools?
                        if (___isModuleUsed[0])
                        {
                            for (int n = 0; n < __instance.Tools.Length; ++n)
                            {
                                float modifier = 1f;
                                __instance.Tools[n].itemValue.ModifyValue(null, null,
                                    PassiveEffects.CraftingSmeltTime,
                                    ref smeltOneTime, ref modifier,
                                    FastTags<TagGroup.Global>.Parse(item.Name));
                                smeltOneTime *= modifier;
                            }
                        }
                        if (timeLeft == int.MinValue)
                        {
                            return smeltOneTime * stack.count;
                        }
                        else if (stack.count > 1)
                        {
                            return smeltOneTime * (stack.count - 1f) + timeLeft;
                        }
                        else if (stack.count == 1)
                        {
                            return timeLeft;
                        }
                    }
                }
                return 0;
            }

            static void Prefix(
                TileEntityWorkstation __instance,
                float[] ___currentMeltTimesLeft,
                bool[] ___isModuleUsed,
                ref float _timePassed)
            {
                float smelting = 0f;
                // Only check irregular deltas
                if (_timePassed < 10f) return;
                // Check if smelting is used
                if (___isModuleUsed[4])
                {
                    for (int i = 0; i < __instance.InputSlotCount; i += 1)
                    {
                        smelting = System.Math.Max(
                            GetItemStackSmeltingTime(
                                __instance, ___isModuleUsed,
                                ___currentMeltTimesLeft[i],
                                __instance.Input[i]),
                            smelting);
                    }
                }
                // Get summed up crafting time for all recipes
                float crafting = GetAllRecipeTimes(__instance);
                // Get maximum time for either crafting or smelting
                float timeNeeded = System.Math.Max(crafting, smelting);
                // If nothing to be done, we keep burning (feature)
                if (timeNeeded == 0) return;
                // Do not burn more fuel than needed for crafting or smelting
                _timePassed = System.Math.Min(_timePassed, timeNeeded);
            }
        }

        // ####################################################################
        // ####################################################################

        [HarmonyPatch(typeof(TileEntityWorkstation), "UpdateTick")]
        public class TileEntityWorkstation_UpdateTick
        {

            static bool HasWork(TileEntityWorkstation station,
                RecipeQueueItem[] queue,
                ItemStack[] input)
            {
                foreach (var item in queue)
                {
                    if (item.IsCrafting) return true;
                }
                for (int i = 0; i < station.InputSlotCount; i += 1)
                {
                    if (!input[i].IsEmpty()) return true;
                }
                return false;
            }

            static void Prefix(TileEntityWorkstation __instance,
                RecipeQueueItem[] ___queue,
                ItemStack[] ___input,
                out bool __state)
            {
                __state = false;
                if (!__instance.IsBurning) return;
                if (!HasWork(__instance, ___queue, ___input)) return;
                __state = true;
            }

            static void Postfix(TileEntityWorkstation __instance,
                RecipeQueueItem[] ___queue,
                ItemStack[] ___input,
                bool __state)
            {
                if (__state == false) return;
                if (!__instance.IsBurning) return;
                if (HasWork(__instance, ___queue, ___input)) return;
                __instance.IsBurning = false;
            }

        }

        // ####################################################################
        // ####################################################################

        [HarmonyPatch(typeof(XUiC_WorkstationWindowGroup), "Update")]
        public class XUiC_WorkstationFuelGrid_Update
        {

            static bool HasWork(XUiC_CraftingQueue craftingQueue,
                XUiC_WorkstationInputGrid inputWindow)
            {
                foreach (var item in craftingQueue.GetRecipesToCraft())
                {
                    if (item.IsCrafting) return true;
                }
                // Not every station has input
                if (inputWindow == null) return false;
                XUiC_ItemStackGrid matInput = inputWindow.WindowGroup
                    .Controller.GetChildByType<XUiC_ItemStackGrid>();
                int count = matInput.GetItemStackControllers().Length;
                var slots = inputWindow.GetSlots();
                for (int i = 0; i < count; i += 1)
                {
                    if (!slots[i].IsEmpty()) return true;
                }
                return false;
            }

            static void Prefix(out bool __state,
                XUiC_CraftingQueue ___craftingQueue,
                XUiC_WorkstationInputGrid ___inputWindow)
            {
                __state = HasWork(___craftingQueue, ___inputWindow);
            }

            static void Postfix(bool __state,
                XUiC_CraftingQueue ___craftingQueue,
                XUiC_WorkstationInputGrid ___inputWindow,
                XUiC_WorkstationFuelGrid ___fuelWindow)
            {
                if (__state == false) return;
                if (HasWork(___craftingQueue, ___inputWindow)) return;
                if (___fuelWindow != null)
                {
                    ___fuelWindow.TurnOff();
                }
            }

        }
    }
}