extends Area2D

signal spell_cast(pos, radius)

@export var duration: float = 0.5
@export var cooldown: float = 2.0
@export var damage: int = 20
@export_color_no_alpha var spell_color: Color = Color(1, 1, 0, 0.5)

var can_cast: bool = true
var radius: float = 0.0

@onready var explosion_effect: AnimatedSprite2D = $ExplosionEffect
@onready var spell_visual: ColorRect = $SpellVisual

func _ready():
	setup_visual()
	hide()  # Hide the spell initially
	explosion_effect.visible = false

func setup_visual():
	await get_tree().process_frame
	
	var collision_shape = get_node("CollisionShape2D")
	if collision_shape and collision_shape.shape is CircleShape2D:
		radius = collision_shape.shape.radius
		spell_visual.size = Vector2(radius * 2, radius * 2)
		spell_visual.position = -spell_visual.size / 2
		spell_visual.color = spell_color
	update_effect_size()

func cast_spell():
	if not can_cast:
		return
	
	can_cast = false
	show()
	
	# Trigger the explosion effect
	explosion_effect.visible = true
	explosion_effect.play()
	
	var overlapping_bodies = get_overlapping_bodies()
	for body in overlapping_bodies:
		if body.is_in_group("enemies") and body.has_method("take_damage"):
			body.take_damage(damage)
	
	emit_signal("spell_cast", global_position, radius)
	
	await get_tree().create_timer(duration).timeout
	hide()
	explosion_effect.stop()
	explosion_effect.visible = false
	
	await get_tree().create_timer(cooldown - duration).timeout
	can_cast = true

func update_effect_size():
	var base_texture = explosion_effect.sprite_frames.get_frame_texture("default", 0)
	if base_texture:
		var scale_factor = (radius * 2) / base_texture.get_width()
		explosion_effect.scale = Vector2(scale_factor, scale_factor)

func set_radius(new_radius: float):
	var collision_shape = get_node("CollisionShape2D")
	if collision_shape and collision_shape.shape is CircleShape2D:
		collision_shape.shape.radius = new_radius
		radius = new_radius
		spell_visual.size = Vector2(radius * 2, radius * 2)
		spell_visual.position = -spell_visual.size / 2
		update_effect_size()

func get_radius():
	return radius