extends CharacterBody3D
class_name Character

const NORMAL_SPEED = 6.0
const SPRINT_SPEED = 10.0
const JUMP_VELOCITY = 10

enum SkinColor { BLUE, YELLOW, GREEN, RED }

@onready var nickname: Label3D = $PlayerNick/Nickname

@export_category("Objects")
@export var _body: Node3D = null
@export var _spring_arm_offset: Node3D = null

@export_category("Skin Colors")
@export var blue_texture : CompressedTexture2D
@export var yellow_texture : CompressedTexture2D
@export var green_texture : CompressedTexture2D
@export var red_texture : CompressedTexture2D

@onready var _bottom_mesh: MeshInstance3D = get_node("3DGodotRobot/RobotArmature/Skeleton3D/Bottom")
@onready var _chest_mesh: MeshInstance3D = get_node("3DGodotRobot/RobotArmature/Skeleton3D/Chest")
@onready var _face_mesh: MeshInstance3D = get_node("3DGodotRobot/RobotArmature/Skeleton3D/Face")
@onready var _limbs_head_mesh: MeshInstance3D = get_node("3DGodotRobot/RobotArmature/Skeleton3D/Llimbs and head")

var _current_speed: float
var _respawn_point = Vector3(0, 5, 0)
var gravity = ProjectSettings.get_setting("physics/3d/default_gravity")

func _enter_tree():
	set_multiplayer_authority(str(name).to_int())
	$SpringArmOffset/SpringArm3D/Camera3D.current = is_multiplayer_authority()

func _ready():
	return

func _physics_process(delta):
	if not is_multiplayer_authority(): return

	var current_scene = get_tree().get_current_scene()
	if current_scene and current_scene.has_method("is_chat_visible") and current_scene.is_chat_visible() and is_on_floor():
		freeze()
		return

	if not is_on_floor():
		velocity.y -= gravity * delta
		_body.animate(velocity)

	if is_on_floor():
		if Input.is_action_just_pressed("jump"):
			velocity.y = JUMP_VELOCITY
	else:
		velocity.y -= gravity * delta

	_move()
	move_and_slide()
	_body.animate(velocity)

func _process(_delta):
	if not is_multiplayer_authority(): return
	_check_fall_and_respawn()

func freeze():
	velocity.x = 0
	velocity.z = 0
	_current_speed = 0
	_body.animate(Vector3.ZERO)

func _move() -> void:
	var _input_direction: Vector2 = Vector2.ZERO
	if is_multiplayer_authority():
		_input_direction = Input.get_vector(
			"move_left", "move_right",
			"move_forward", "move_backward"
			)

	var _direction: Vector3 = transform.basis * Vector3(_input_direction.x, 0, _input_direction.y).normalized()

	is_running()
	_direction = _direction.rotated(Vector3.UP, _spring_arm_offset.rotation.y)

	if _direction:
		velocity.x = _direction.x * _current_speed
		velocity.z = _direction.z * _current_speed
		_body.apply_rotation(velocity)
		return

	velocity.x = move_toward(velocity.x, 0, _current_speed)
	velocity.z = move_toward(velocity.z, 0, _current_speed)

func is_running() -> bool:
	if Input.is_action_pressed("shift"):
		_current_speed = SPRINT_SPEED
		return true
	else:
		_current_speed = NORMAL_SPEED
		return false

func _check_fall_and_respawn():
	if global_transform.origin.y < -15.0:
		_respawn()

func _respawn():
	global_transform.origin = _respawn_point
	velocity = Vector3.ZERO

@rpc("any_peer", "reliable")
func change_nick(new_nick: String):
	if nickname:
		nickname.text = new_nick

func get_texture_from_name(skin_color: SkinColor) -> CompressedTexture2D:
	match skin_color:
		SkinColor.BLUE: return blue_texture
		SkinColor.GREEN: return green_texture
		SkinColor.RED: return red_texture
		SkinColor.YELLOW: return yellow_texture
		_: return blue_texture

@rpc("any_peer", "reliable")
func set_player_skin(skin_name: SkinColor) -> void:
	var texture = get_texture_from_name(skin_name)

	set_mesh_texture(_bottom_mesh, texture)
	set_mesh_texture(_chest_mesh, texture)
	set_mesh_texture(_face_mesh, texture)
	set_mesh_texture(_limbs_head_mesh, texture)

func set_mesh_texture(mesh_instance: MeshInstance3D, texture: CompressedTexture2D) -> void:
	if mesh_instance:
		var material := mesh_instance.get_surface_override_material(0)
		if material and material is StandardMaterial3D:
			var new_material := material
			new_material.albedo_texture = texture
			mesh_instance.set_surface_override_material(0, new_material)