class_name StorageDefinition
extends Resource

@export var storage_id: StringName
@export var display_name: String
@export_range(0.0, 1000000.0, 0.1) var capacity := StorageStateRecord.DEFAULT_CAPACITY
@export var accepted_item_ids: Array[StringName] = []
@export var accepted_item_tag_ids: Array[StringName] = []
@export var capability_tag_ids: Array[StringName] = []
@export var routing_priority := 0
@export var deposit_action_id: StringName
@export var withdrawal_action_id: StringName
@export var presentation_cue_id: StringName


func validate() -> Array[String]:
	var errors: Array[String] = []
	if storage_id.is_empty():
		errors.append("storage_id is empty")
	if display_name.is_empty():
		errors.append("display_name is empty for '%s'" % storage_id)
	if not is_finite(capacity) or capacity <= 0.0:
		errors.append("capacity must be positive for '%s'" % storage_id)
	if accepted_item_ids.is_empty() and accepted_item_tag_ids.is_empty():
		errors.append("storage '%s' must accept an item or item tag" % storage_id)
	_validate_unique_ids(accepted_item_ids, "accepted item", errors)
	_validate_unique_ids(accepted_item_tag_ids, "accepted item tag", errors)
	_validate_unique_ids(capability_tag_ids, "capability tag", errors)
	return errors


func accepts_item(item: ItemDefinition) -> bool:
	if item == null:
		return false
	if item.item_id in accepted_item_ids:
		return true
	for tag_id in item.capability_tag_ids:
		if tag_id in accepted_item_tag_ids:
			return true
	return false


func create_state(initial_amounts: Dictionary = {}) -> StorageStateRecord:
	return StorageStateRecord.create(storage_id, initial_amounts, capacity)


static func _validate_unique_ids(
	ids: Array[StringName], label: String, errors: Array[String]
) -> void:
	var seen := {}
	for value in ids:
		if value.is_empty():
			errors.append("%s ID is empty" % label)
		elif seen.has(value):
			errors.append("duplicate %s '%s'" % [label, value])
		else:
			seen[value] = true