class_name SupplyCatalog
extends RefCounted

## Explicit P1 tuning values. The existing raw_food -> basic_meal IDs and
## recipe remain compatible with facility data; cooking points/tableware are
## a later specification change, not silently introduced by this catalogue.
const RAW_FOOD := &"ingredient/raw_food"
const BASIC_MEAL := &"ingredient/basic_meal"
const RAW_TARGET := 8
const KITCHEN_TARGET_DEFAULT := 8
const KITCHEN_TARGET_MAX := 16
const BATCH_INPUT := 4
const BATCH_OUTPUT := 4
const PRODUCTION_MINUTES := 15
const PRODUCTION_PURPOSE := &"kitchen_production"


static func get_item(item_id: StringName) -> Dictionary:
	match item_id:
		RAW_FOOD:
			return {
				&"item_id": RAW_FOOD, &"display_name": "調理用食材",
				&"unit_price": 3, &"unit_weight": 1, &"shelf_life_minutes": 1440,
				&"purchasable": true,
			}
		BASIC_MEAL:
			return {
				&"item_id": BASIC_MEAL, &"display_name": "基本料理",
				&"unit_price": 0, &"unit_weight": 1, &"shelf_life_minutes": 720,
				&"purchasable": false,
			}
	return {}


static func get_purchase_items() -> Array[Dictionary]:
	return [get_item(RAW_FOOD)]


static func storage_capacity(definition_id: StringName) -> int:
	match definition_id:
		&"warehouse": return 100
		&"kitchen": return 40
		&"cafeteria": return 24
	return 0


static func get_recipe() -> Dictionary:
	return {
		&"input_item_id": RAW_FOOD, &"input_quantity": BATCH_INPUT,
		&"output_item_id": BASIC_MEAL, &"output_quantity": BATCH_OUTPUT,
		&"duration_minutes": PRODUCTION_MINUTES, &"minimum_staff": 1,
	}


## All physical stacks, including reserved/expired goods, occupy storage until
## the inventory owner actually removes them.
static func inventory_weight(inventory: InventoryService, inventory_id: StringName) -> int:
	var total := 0
	for stack: Dictionary in inventory.get_stacks(inventory_id):
		total += int(stack[&"quantity"]) * int(stack[&"unit_weight"])
	return total