extends Area2D


signal hover_entered(node: Node2D)
signal hover_exited(node: Node2D)

@export_group("Color", "color")
@export var color_background: Color
@export var color_border: Color

@export var is_enabled: bool

var anchor: Vector2 = Vector2.ZERO
var size: Vector2 = Vector2.ZERO:
	set(value):
		size = value
		$CollisionShape2D.position = size / 2
		$CollisionShape2D.shape.size = abs(size)

var is_active: bool:
	get():
		return abs(size) > Vector2(1, 1) and is_enabled

@onready var camera: Camera = get_viewport().get_camera_2d()


func _process(_delta: float) -> void:
	if Input.is_action_just_pressed("select"):
		anchor = get_global_mouse_position()
		global_position = anchor
	
	if Input.is_action_pressed("select"):
		size = get_global_mouse_position() - anchor
		if is_active:
			queue_redraw()
	
	if is_active and Input.is_action_just_released("select"):
		var areas = get_overlapping_areas()
		for area in areas:
			if "is_selected" in area.get_parent():
				if area.get_parent().owner_id == multiplayer.get_unique_id():
					area.get_parent().is_selected = true
		
		if not areas.is_empty():
			Client.multi_select_finished.emit(areas)
		
		size = Vector2.ZERO
		queue_redraw()


func _draw():
	if is_active:
		var rect = Rect2(Vector2.ZERO, size)
		draw_rect(rect, color_background)
		draw_rect(rect, color_border, false, 1.1 / max(camera.zoom.x, camera.zoom.y))


func _on_area_entered(area: SelectableArea) -> void:
	if area.root.owner_id == multiplayer.get_unique_id():
		hover_entered.emit(area.root)


func _on_area_exited(area: SelectableArea) -> void:
	if area.root.owner_id == multiplayer.get_unique_id():
		hover_exited.emit(area.root)