extends Node3D
## Dresslermeister: Augen auf, Mähdrescher hijacken, Apfel dreschen (DESIGN.md §10).

var _hijacked: int = 0
var _eyes_open: bool = false

func _ready() -> void:
	GameState.current_scene_id = "dressler_boss"
	GameState.heal_full()
	var dressler := get_node_or_null("Dressler")
	if dressler:
		dressler.set("ai_enabled", false) # sleeps until eyes open
		dressler.set("max_hp", 18)
		dressler.set("hp", 18)
		dressler.set("billboard_height", SpriteFit.WORLD_BOSS_HEIGHT)
		dressler.set("death_cause_key", "death_mower")
		if dressler.has_signal("defeated"):
			dressler.defeated.connect(_on_dressler_defeated)
	var ui := get_node_or_null("/root/UIRoot")
	if ui and ui.has_method("show_dialog"):
		ui.show_dialog("Ein riesiger Apfel auf dem Feld…", 2.5)
	for name in ["Mower1", "Mower2", "Mower3"]:
		var m := get_node_or_null(name)
		if m:
			_make_hijackable(m)

func _physics_process(delta: float) -> void:
	_try_open_eyes()
	if Input.is_action_just_pressed("interact") or Input.is_action_just_pressed("attack"):
		_try_hijack()
	# Moving mowers slowly toward player if not hijacked
	var player := get_tree().get_first_node_in_group("player")
	if player is Node3D:
		for mower in get_tree().get_nodes_in_group("hijackable_mower"):
			if mower is Node3D and not bool(mower.get_meta("hijacked", false)):
				var to_p: Vector3 = (player as Node3D).global_position - mower.global_position
				to_p.y = 0.0
				if to_p.length() > 0.2:
					mower.global_position += to_p.normalized() * 1.6 * delta

func _try_open_eyes() -> void:
	if _eyes_open:
		return
	var player := get_tree().get_first_node_in_group("player")
	var dressler := get_node_or_null("Dressler")
	if player is Node3D and dressler is Node3D:
		if player.global_position.distance_to(dressler.global_position) < 6.0:
			_eyes_open = true
			dressler.set("ai_enabled", true)
			dressler.set("move_speed", 1.2)
			dressler.set("attack_damage", 1)
			dressler.set("shout_key", "dialog_dressler")
			dressler.set("shout_interval", 6.0)
			var ui := get_node_or_null("/root/UIRoot")
			if ui and ui.has_method("show_dialog"):
				ui.show_dialog_key("dialog_dressler", 3.0)

func _make_hijackable(mower: Node) -> void:
	mower.set_meta("hijacked", false)
	mower.add_to_group("hijackable_mower")

func _try_hijack() -> void:
	var player := get_tree().get_first_node_in_group("player")
	if player == null:
		return
	for mower in get_tree().get_nodes_in_group("hijackable_mower"):
		if mower is Node3D and player.global_position.distance_to(mower.global_position) <= 2.5:
			if bool(mower.get_meta("hijacked", false)):
				continue
			mower.set_meta("hijacked", true)
			_hijacked += 1
			if mower is Area3D:
				(mower as Area3D).monitoring = false
			var ui := get_node_or_null("/root/UIRoot")
			if ui and ui.has_method("show_dialog"):
				ui.show_dialog("Fahrer rausgeworfen! Dresche den Apfel! (%d)" % _hijacked)
			var dressler := get_node_or_null("Dressler")
			if dressler and dressler.has_method("take_hit"):
				dressler.take_hit(4)
			return

func _on_dressler_defeated() -> void:
	Achievements.unlock("dressler_apples")
	Inventory.add_item("dressler_apple", 1)
	var ui := get_node_or_null("/root/UIRoot")
	if ui and ui.has_method("show_dialog"):
		ui.show_dialog_key("dialog_dressler_drop", 4.0)
	GameState.set_flag("dressler_defeated", true)