class_name SyncController
extends Node

var module: copyMultiplayer
var model_controller: ModelController
var peer_id: int

var nickname: String # FIXME: Not assigned or used.
var model_name: String
var model: Node
var skeleton: Skeleton3D

# Allows us to use the "apply_animations" function to apply blendshapes to a model.
static var _functions_blendshapes: Script = load("res://Mods/MediaPipe/MediaPipeController_BlendShapes.gd")

func _ready() -> void:
	module = get_parent().get_parent()
	model_controller = get_parent()
	peer_id = model_controller.name.to_int()

## Attempts to change the model of this player.
func change_model(filename: String) -> void:
	if not filename.is_valid_filename():
		module.print_log("ERROR: '%s' is not a valid file name!" % filename)
		return
	var full_path := module.cache.path_join(filename)
	if not FileAccess.file_exists(full_path):
		module.print_log("Player %d wanted to switch to '%s', but it doesn't exist, skipping" % [ peer_id, filename ])
		return
	if not model_controller.load_vrm(full_path):
		module.print_log("ERROR: Model '%s' could not be loaded!" % filename)
		return
	module.print_log("Player %d switched to '%s'" % [ peer_id, filename ])
	model_name = filename
	model      = model_controller.get_node_or_null("Model")
	skeleton   = model_controller._get_model_skeleton()

func sync_model_animation(
	model_transform: Transform3D,
	shape_dict: Dictionary, # Dictionary[String, float]
	bone_poses: Dictionary, # Dictionary[String, Transform3D]
) -> void:
	if (not model) or (not skeleton): return
	model.transform = model_transform
	_functions_blendshapes.apply_animations(model, shape_dict)
	for bone_name in bone_poses:
		var pose: Transform3D = bone_poses[bone_name]
		var idx := skeleton.find_bone(bone_name)
		if idx != -1: skeleton.set_bone_pose(idx, pose)

@warning_ignore("shadowed_variable")
static func send_model_animation(module: copyMultiplayer) -> void:
	# Check if there's other players we're connected to.
	if module.multiplayer.get_peers().size() == 0: return

	var model     := module.get_model()
	var skeleton  := module.get_skeleton()
	var media_pipe = module.get_node("../MediaPipeController")
	if (not model) or (not skeleton) or (not media_pipe): return

	var shape_dict = media_pipe.blend_shape_last_values

	var bone_poses = {}
	for bone_name in module.tracked_bones:
		var bone_idx = skeleton.find_bone(bone_name)
		if bone_idx == -1: continue
		var bone_pose = skeleton.get_bone_pose(bone_idx)
		bone_poses[bone_name] = bone_pose

	# FIXME: This sends way more information than necessary, but works as a proof-of-concept!
	module.sync_model_animation.rpc(model.transform, shape_dict, bone_poses)