@tool
extends Control

const BUTTON_QTY = 12

const towerButton := preload("res://UI/tower_button.tscn")
var towerListResource := preload("res://Towers/towers.tres")

@onready var buttonContainer = $HBoxContainer/ControlPanelBase/MarginContainer/GridContainer

var allowedTowers : Array[Tower.TYPES]


func _ready() -> void:
	addTowerButtonNodes()
	EventBus.allowedTowerHasChange.connect(allowedTowerHasChange)
	if Engine.is_editor_hint():
		towerListResource.changed.connect(addTowerButtonNodes)


func _on_button_cube_pressed() -> void:
	pass # Replace with function body.


func _on_button_quit_level_pressed() -> void:
	Transition.goto("res://UI/start_menu.tscn")


func _on_button_quit_game_pressed() -> void:
	get_tree().quit()


func allowedTowerHasChange(allowedTowers : Array[Tower.TYPES]) -> void:
	self.allowedTowers = allowedTowers
	if is_node_ready():
		addTowerButtonNodes()


func addTowerButtonNodes() -> void:
	for node in buttonContainer.get_children():
		if node.has_meta("dynamicButton"):
			node.queue_free()

	var additionalPlaceholder : int = 0
	for towerResource in towerListResource.towers:
		if !towerResource || not allowedTowers.has(towerResource.towerType):
			additionalPlaceholder += 1
			continue

		var towerBtn := towerButton.instantiate()
		var tower : Tower = towerResource.towerScene.instantiate()
		towerBtn.towerType = tower.tower_type
		towerBtn.tooltip_text = tower.name
		towerBtn.setButtonTexture(tower.icone)
		towerBtn.set_meta("dynamicButton", true)
		tower.queue_free()
		buttonContainer.add_child(towerBtn)

	for i in BUTTON_QTY - towerListResource.towers.size() + additionalPlaceholder:
		var placeholderBtn := Button.new()
		placeholderBtn.set_meta("dynamicButton", true)
		placeholderBtn.custom_minimum_size = Vector2(80, 80)
		buttonContainer.add_child(placeholderBtn)