@tool
extends Button
class_name GuiButton


enum TYPE { BASIC, TOWER, UPGRADE }


var type : TYPE = TYPE.BASIC


var towerType : Tower.TYPE :
	set(value):
		towerType = value
		if towerType != Tower.TYPE.NONE:
			type = TYPE.TOWER
			toggle_mode = true
			add_theme_stylebox_override("pressed", GameStyleBoxFlat.createWithColor(GameColor.COLOR.SELECTED))
			EventBus.tower_changed.connect(towerChanged)
			EventBus.tower_selected.connect(func(_type): set_pressed_no_signal(_type == towerType))
		if type == TYPE.UPGRADE:
			EventBus.tower_upgraded.connect(upgradeTower)


func upgradeTower(towerType : Tower.TYPE, upgrade : TowerUpgrade) -> void:
	pass


@export var texture : Texture2D :
	set(value):
		texture = value
		$TextureRect.texture = texture


func buttonToggled(state : bool) -> void:
	if type == TYPE.TOWER:
		EventBus.tower_selected.emit(towerType if state else Tower.TYPE.NONE)


func towerChanged(tower : Tower) -> void :
	if tower.type == towerType:
		$EnergyBar.value = tower.energy
		$EnergyBar.max_value = tower.max_energy
		$EnergyBar.visible = tower.builded