extends Node2D

# 🛠️ BARU: Sinyal untuk memberi tahu Stage kalau boss masuk Fase 2
signal fase_dua_dimulai

@export var roda_berputar : bool = true
@export var sprite_rusak_tahap1 : Texture2D 
@export var sprite_rusak_tahap2 : Texture2D 
@export var sprite_hancur_total : Texture2D  

@export var peluru_fase1 : PackedScene = preload("res://pelururiflemusuh.tscn")
@export var peluru_fase2 : PackedScene = preload("res://pelurumusuhfase_2.tscn")

# 🎛️ SETELAN VOLUME AUDIO FASE 2 (+10 dB)
@export var VOLUME_TEMBAKAN_KUAT: float = 10.0

var health = 100
var is_destroyed = false

# 🛠️ BARU: Pengaman agar sinyal tutorial Fase 2 hanya dikirim sekali saja
var tutorial_fase2_sudah_dikirim: bool = false

@onready var body_sprite = $StaticBody2D/body
@onready var anim_player = $AnimationPlayer
@onready var titik_tembak = $TitikTembak

# 🎵 AUDIO STREAM 1: Tembakan Biasa (Fase 1)
@onready var audio_tembakan = $AudioStreamPlayer
# 🎵 AUDIO STREAM 2: Tembakan Diperkuat / Meriam (Fase 2)
@onready var audio_tembakan_kuat = $AudioStreamPlayer2

# Variabel untuk referensi player agar bisa diincar
var player_ref = null

func _ready():
	if roda_berputar and anim_player:
		anim_player.play("berputar")
	
	# Cari player di dalam scene
	player_ref = get_tree().current_scene.find_child("Player", true, false)

func mulai_menembak():
	if is_destroyed: return
	await get_tree().create_timer(5.0).timeout
	_loop_tembakan()

func _loop_tembakan():
	while not is_destroyed and visible:
		if health > 50:
			for i in range(5):
				if is_destroyed or health <= 50: break 
				_eksekusi_tembak_bertarget(peluru_fase1, 5)
				await get_tree().create_timer(0.15).timeout 
			await get_tree().create_timer(5.0).timeout
		else:
			if is_destroyed: break
			_eksekusi_tembak_bertarget(peluru_fase2, 40.0)
			await get_tree().create_timer(7.0).timeout

func _eksekusi_tembak_bertarget(scene_peluru, nilai_damage):
	if scene_peluru and titik_tembak:
		
		# 🎵 MAINKAN AUDIO BERDASARKAN FASE NYAWA BOSS
		if health > 50:
			if audio_tembakan:
				audio_tembakan.play()
		else:
			if audio_tembakan_kuat:
				audio_tembakan_kuat.volume_db = VOLUME_TEMBAKAN_KUAT
				audio_tembakan_kuat.play()
				
		var peluru = scene_peluru.instantiate()
		
		# 1. Tentukan posisi muncul peluru
		var spawn_pos = titik_tembak.global_position
		peluru.global_position = spawn_pos
		peluru.damage = nilai_damage
		
		# --- Atur Kecepatan Peluru ---
		if "speed" in peluru:
			if health > 50:
				peluru.speed = 600.0 # Kecepatan peluru Fase 1
			else:
				peluru.speed = 1000.0 # Kecepatan peluru Fase 2 (lebih ngebut!)
		
		# 2. Tentukan target (Default ke kiri jauh)
		var target_pos = spawn_pos + Vector2(-1000, 0)
		
		if is_instance_valid(player_ref):
			target_pos = player_ref.global_position
			
			if player_ref.get("is_menunduk") == true:
				target_pos.y -= 220 # Meleset ke atas
			else:
				target_pos.y -= 50  # Bidik badan
		
		# 3. Hitung Arah
		var diff = target_pos - spawn_pos
		if diff.x > 0: diff.x = -100 # Paksa arah tetap ke kiri
		var arah = diff.normalized()
		
		# 4. Terapkan Arah dan Rotasi
		if "direction" in peluru:
			peluru.direction = arah
		
		peluru.rotation = arah.angle()
			
		get_tree().current_scene.add_child(peluru)

func kurangi_nyawa(_jumlah):
	if is_destroyed: return
	if health <= 50: health -= 1.5
	else: health -= 0.5
	
	print("HP Boss: ", health)
	
	# 🛠️ BARU: Deteksi Transisi ke HP <= 50 untuk memicu Sinyal Tutorial
	if health <= 50 and not tutorial_fase2_sudah_dikirim and not is_destroyed:
		tutorial_fase2_sudah_dikirim = true
		emit_signal("fase_dua_dimulai") # Ledakkan sinyal ke skrip Stage!
	
	if health <= 0: hancurkan_mobil()
	elif health <= 25:
		body_sprite.texture = sprite_rusak_tahap2
		body_sprite.scale = Vector2(1.79, 2.022)
	elif health <= 50:
		body_sprite.texture = sprite_rusak_tahap1
		body_sprite.scale = Vector2(1.79, 2.022)

func hancurkan_mobil():
	is_destroyed = true
	if anim_player: anim_player.stop()
	if sprite_hancur_total: 
		body_sprite.texture = sprite_hancur_total
		body_sprite.scale = Vector2(1.79, 2.022) 
	
	var body = get_node_or_null("StaticBody2D")
	if body:
		for child in body.get_children():
			if child is CollisionPolygon2D or child is CollisionShape2D:
				child.set_deferred("disabled", true)