class_name ProjectileBase
extends Area2D

signal on_hit(projectile, target)
signal on_spawned(projectile)
signal on_destroyed(projectile)

@export var speed: float = 500.0
@export var damage: float = 10.0
@export var lifetime: float = 5.0
@export var direction: Vector2 = Vector2.RIGHT
@export var target_position: Vector2
@export var is_friendly: bool = true

# Modifier-related properties
var pierce_count: int = 0
var has_explosive_impact: bool = true
var explosion_projectile_count: int = 2
var explosion_projectile_damage_mult: float = 0.5
var explosion_projectile_speed: float = 300.0
var explosion_spread_angle: float = 360.0 # Full circle by default

# References
var source_weapon: RangedWeapon # Reference to the weapon that fired this
var lifetime_timer: Timer
# Add a variable to track the entity that triggered the explosion
var ignore_target = null

func _on_body_entered(body):
	# Check if this is a body we should ignore
	if body == ignore_target:
		return

	if body.is_in_group("enemies") and is_friendly:
		Log.pr("Hit enemy: ", body.name)
		# Deal damage to enemy
		if body.has_method("take_damage"):
			body.take_damage(damage)
		
	# Emit signal for modifiers to react to
	emit_signal("on_hit", self, body)
		
	# Handle piercing
	if pierce_count > 0:
		pierce_count -= 1
	else:
		# Handle explosive impact
		if has_explosive_impact:
			# Store the target that triggered the explosion
			ignore_target = body
			_trigger_explosion()
		
		# Destroy the projectile
		destroy()

func _trigger_explosion():
  # Create the explosion VFX
  # var explosion = preload("res://scenes/explosion_effect.tscn").instantiate()
  # explosion.global_position = global_position
  # get_tree().root.add_child(explosion)
  # Spawn the additional projectiles
	if explosion_projectile_count > 0:
		_spawn_explosion_projectiles()

func _spawn_explosion_projectiles():
	for i in range(explosion_projectile_count):
		# Create a new projectile
		var new_proj = duplicate()
		new_proj.global_position = global_position
   
		# Calculate new direction based on spread
		var random_angle = randf_range(0, 2 * PI)
		var new_dir = Vector2.RIGHT.rotated(random_angle)
		
		# Set properties for the new projectile
		new_proj.direction = new_dir
		new_proj.damage = damage * explosion_projectile_damage_mult
		new_proj.speed = explosion_projectile_speed
		
		# Clear explosive properties so we don't get infinite loops
		new_proj.has_explosive_impact = true
		new_proj.explosion_projectile_count = 1
		
		# Pass the ignore_target to the new projectiles
		new_proj.ignore_target = ignore_target
		
		# Add to scene tree
		get_tree().root.call_deferred("add_child", new_proj)

func destroy():
	emit_signal("on_destroyed", self)
	queue_free()

func _on_lifetime_timeout():
	destroy()