extends VBoxContainer

@export var _generator: CurrencyGenerator

@onready var _buy_button: Button = $HBoxContainerGenerators/BuyOneButton
@onready var _buy_max_button: Button = $HBoxContainerGenerators/BuyMaxButton
@onready var _name_label: Label = $Label
@onready var _owned_value: Label = $GeneratorStatsGrid/OwnedValue
@onready var _next_cost_value: Label = $GeneratorStatsGrid/NextCostValue
@onready var _production_value: Label = $GeneratorStatsGrid/ProductionValue

func _ready() -> void:
	_generator.purchase_completed.connect(_on_generator_updated)
	_generator.production_tick.connect(_on_generator_updated)
	_generator.purchase_failed.connect(_on_generator_updated)
	GameState.currency_changed.connect(_on_currency_changed)

	GameState.generator_state_changed.connect(_on_generator_state_changed)

	_name_label.text = _generator.data.name if _generator.data != null else "Generator"
	_refresh_generator_ui()

func _on_buy_pressed() -> void:
	_generator.buy(1)
	_refresh_generator_ui()

func _on_buy_max_pressed() -> void:
	_generator.buy_max()
	_refresh_generator_ui()

func _on_debug_income_pressed() -> void:
	_generator.grant_currency(BigNumber.from_float(100.0))
	_refresh_generator_ui()

func _on_currency_changed(changed_currency: GameState.CurrencyType, _new_value: BigNumber) -> void:
	if changed_currency != _generator.currency:
		return
	_refresh_generator_ui()

func _on_generator_updated(_a = null, _b = null, _c = null, _d = null) -> void:
	_refresh_generator_ui()

func _on_generator_state_changed(generator_id: StringName, _state: Dictionary) -> void:
	if generator_id == _generator.get_generator_id():
		_refresh_generator_ui()
	
func _refresh_generator_ui() -> void:
	var can_interact: bool = _generator.is_available_to_player()
	_buy_button.disabled = not can_interact
	_buy_max_button.disabled = not can_interact

	_owned_value.text = str(_generator.owned)
	_next_cost_value.text = _generator.get_next_cost().to_string_suffix(2) if can_interact else "-"

	var production_per_second: float = 0.0
	if _generator.data != null and can_interact:
		production_per_second = _generator.data.production_per_second(
			_generator.owned,
			_generator.run_multiplier,
			_generator.purchased_count
		)

	_production_value.text = BigNumber.from_float(production_per_second).to_string_suffix(2)