class_name PlayerCoolerCapacity
extends Node

const PlayerWalletType = preload("res://economy/player_wallet.gd")
const PlayerHomeStateType = preload("res://homes/player_home_state.gd")

signal capacity_changed(level: int, capacity: int)

## Compatibility adapter for saves and systems that still refer to the old
## cooler-capacity object. Storage is now derived exclusively from the player's
## home tier; this object is not independently purchasable.
const CAPACITIES: Array[int] = [9, 18, 27, 36, 45, 54, 63, 72]
const EXPANSION_COSTS: Array[int] = [75, 175, 400, 850, 1500, 2500, 4000]
const MAX_LEVEL: int = 7
const MAX_CAPACITY: int = 72

var _home_state: PlayerHomeStateType
var _legacy_capacity_level: int = 0


func bind_home_state(home_state: PlayerHomeStateType) -> void:
	if _home_state == home_state:
		return
	if (
		_home_state != null
		and _home_state.changed.is_connected(_on_home_changed)
	):
		_home_state.changed.disconnect(_on_home_changed)
	_home_state = home_state
	if (
		_home_state != null
		and not _home_state.changed.is_connected(_on_home_changed)
	):
		_home_state.changed.connect(_on_home_changed)
	_on_home_changed()


func get_level() -> int:
	return _legacy_capacity_level


func get_capacity() -> int:
	if _home_state != null:
		# A new home upgrade grants its authored capacity. Older saves retain any
		# separately purchased storage level so reducing the first RV tier cannot
		# hide or discard items that were already placed in later slots.
		return maxi(
			_home_state.get_storage_capacity(),
			CAPACITIES[clampi(_legacy_capacity_level, 0, MAX_LEVEL)],
		)
	return CAPACITIES[clampi(_legacy_capacity_level, 0, MAX_LEVEL)]


func get_next_capacity() -> int:
	return -1


func get_next_cost() -> int:
	return -1


func can_purchase(_wallet: PlayerWalletType) -> bool:
	return false


func purchase(_wallet: PlayerWalletType) -> bool:
	return false


func restore_level(level: int) -> bool:
	var validated: int = clampi(level, 0, MAX_LEVEL)
	var changed: bool = _legacy_capacity_level != validated
	_legacy_capacity_level = validated
	if changed:
		capacity_changed.emit(get_level(), get_capacity())
	return true


func reset_to_defaults() -> void:
	restore_level(0)


func to_save_data() -> Dictionary:
	return {"capacity_level": get_level()}


func _on_home_changed() -> void:
	capacity_changed.emit(get_level(), get_capacity())