extends Node3D
## A Room is a location that can be played through, and it emits a proceed signal that holds
## the scene path to the next room (or null for credits roll)
class_name Room

@onready var ui: Control = %UI

## Tells the main loop to proceed to the next scene
signal proceed(next_scene_path: String)

@export var id: State.rooms = State.rooms.NULL

@onready var player: PlayerController = %PlayerController
@onready var scene_player : AnimationPlayer = %SceneAnimationPlayer

## get-only property with the current authoritative savegame.
var save_game : SaveGame:
	get: return State.save_game


func _ready() -> void:
	assert(id != State.rooms.NULL, "Room " + str(self) + name + " has no proper ID set, it's still State.Rooms.NULL")
	prints("room.gd", "_ready()", self)

	State.room = self

	if not save_game:
		var debug_save_path := "res://dev-util/debug_save.tres"
		push_warning("Room initialised without a SaveGame. Making a copy of ", debug_save_path)
		State.save_game = ResourceLoader.load(debug_save_path).duplicate(true)

	if not Main.normal_boot:
		_debug_mode()




func get_ready():
	prints("----------", "GET_READY", self.name, "--------------")
	pull_save_state(save_game)
	save_game.seen.append(name)


func play() -> String:
	for i in range(20):
		await get_tree().process_frame
	await get_ready()
	await start_room()
	var next_room : StringName = await proceed
	prints("----------", "PROCEEDING", next_room, "--------------")
	return next_room


func start_room():
	prints("----------", "START_ROOM", self.name, "--------------")
	await get_tree().process_frame # so this registers as a coroutine in IDE


func pull_save_state(save: SaveGame) -> void:
	# Override this function to load the state of the chapter from State.save_game
	restore_player_from_save(save)

## Attempts to find player controller and restore position/rotation from save
func restore_player_from_save(save: SaveGame) -> void:
	# only restore the player if we've already been in this room
	if name in save.seen:
		player.restore_from_save(save)

func save_room():
	prints("room.gd", "save_room", self)
	save_game.save_to_file(get_tree().root.get_texture())

func unload():
	# Override this function to clean up things not owned by this room
	pass

## Called before a scene starts to allow room-specific preparation (e.g., animations)
## Override in subclasses to add custom scene preparation logic
func prepare_scene_start(_scene_id: Scenes.id, _is_repeating: bool) -> void:
	prints("PREPARE SCENE", _scene_id, _is_repeating)
	await get_tree().process_frame # Dummy wait for LSP warning otherwise

## Override this (and call super._debug_mode()) if you want to initialize some data
## for running this Room standalone ("play current scene")
func _debug_mode() -> void:
	push_warning("room.gd: DEBUG MODE - ", self)
	await get_tree().create_timer(1).timeout
	play()