extends StaticBody3D

# PortalDoor.gd
# Specialized door for "Tekton Doors" mode.
# Teleports players to a target room/door when they step into it.

signal player_entered_portal(player_node, door_node)

@export var room_id: int = 0
@export var door_id: int = 0 # 0: North, 1: South, 2: East, 3: West

# State synced by PortalModeManager
var target_room_id: int = -1
var target_door_id: int = -1
var is_active: bool = true
var portal_color: Color = Color.WHITE: set = set_portal_color

func set_portal_color(value: Color):
	portal_color = value
	_update_visuals()

@onready var detection_area: Area3D = $Area3D

func _ready():
	add_to_group("PortalDoors")
	if detection_area:
		detection_area.body_entered.connect(_on_body_entered)
	
	# Visual feedback: indicate door is active
	_update_visuals()

func _on_body_entered(body: Node3D):
	if not is_active: return
	
	if body.is_in_group("Players") or body.get("is_bot"):
		print("[PortalDoor] Player %s entered Door %d in Room %d" % [body.name, door_id, room_id])
		emit_signal("player_entered_portal", body, self)

var _materials_initialized: bool = false

func _update_visuals():
	if not is_node_ready() or not is_inside_tree(): return
	
	if not _materials_initialized:
		_initialize_unique_materials()
		_materials_initialized = true
	
	var vortex = get_node_or_null("Vortex")
	if vortex:
		var mat = vortex.get_surface_override_material(0)
		if mat:
			mat.albedo_color = portal_color
			mat.albedo_color.a = 0.5
			if mat.has_method("set_emission"):
				mat.emission = portal_color
	
	for part_name in ["Frame_Left", "Frame_Right", "Frame_Top"]:
		var frame = get_node_or_null(part_name)
		if frame:
			var mat = frame.get_surface_override_material(0)
			if mat:
				mat.albedo_color = portal_color.lerp(Color.BLACK, 0.4)

func _initialize_unique_materials():
	var vortex = get_node_or_null("Vortex")
	if vortex:
		var mat = vortex.get_surface_override_material(0)
		if not mat:
			mat = vortex.mesh.surface_get_material(0)
		
		if mat:
			vortex.set_surface_override_material(0, mat.duplicate())
	
	for part_name in ["Frame_Left", "Frame_Right", "Frame_Top"]:
		var frame = get_node_or_null(part_name)
		if frame:
			var mat = frame.get_surface_override_material(0)
			if not mat:
				mat = frame.mesh.surface_get_material(0)
			
			if mat:
				frame.set_surface_override_material(0, mat.duplicate())

func get_teleport_target_position() -> Vector2i:
	# This function will be called by the manager to determine WHERE the player spawns
	# usually just outside the target door's position.
	# For now, let's just return a placeholder that the manager will override.
	return Vector2i.ZERO