// Copyright ExByte Studios. Item Interaction Ecosystem.

#pragma once

#include "CoreMinimal.h"
#include "Kismet/BlueprintFunctionLibrary.h"
#include "GameplayTagContainer.h"
#include "ItemCraftingLibrary.generated.h"

class UInventoryComponent;

/**
 * Crafting + loot helpers (section 6). All server-authoritative: crafting consumes
 * inputs and produces the output through the inventory's validated operations;
 * loot rolls fresh instances from a loot table into a container.
 */
UCLASS()
class ITEMINVENTORY_API UItemCraftingLibrary : public UBlueprintFunctionLibrary
{
	GENERATED_BODY()

public:
	/** True if Inventory holds every ingredient (and the station requirement is met). */
	UFUNCTION(BlueprintCallable, Category = "Item|Crafting", meta = (WorldContext = "WorldContext"))
	static bool CanCraft(const UObject* WorldContext, UInventoryComponent* Inventory, FName RecipeId, FGameplayTag AvailableStation);

	/** Server: consume the recipe inputs and add its output. Returns true on success. */
	UFUNCTION(BlueprintCallable, Category = "Item|Crafting", meta = (WorldContext = "WorldContext"))
	static bool Craft(const UObject* WorldContext, UInventoryComponent* Inventory, FName RecipeId, FGameplayTag AvailableStation);

	/** Server: roll a loot table and add the results into an inventory. */
	UFUNCTION(BlueprintCallable, Category = "Item|Loot", meta = (WorldContext = "WorldContext"))
	static void RollLootIntoInventory(const UObject* WorldContext, UInventoryComponent* Inventory, FName TableId, int32 RollCount);

private:
	/** Removes Count of ItemId across stacks. Returns true if the full amount was removed. */
	static bool ConsumeItem(UInventoryComponent* Inventory, FName ItemId, int32 Count);
};