class_name Player
extends CharacterBody3D

const MOVE_SPEED: float = 5
const RUN_SPEED: float = 10
const CROUCH_SPEED: float = 1
const MOVE_ACCELERATION: float = 50
const MOVE_DECELERATION: float = 25

const JUMP_FORCE: float = 10
const FALL_SPEED: float = 20
const FALL_ACCELERATION: float = 25

const CAMERA_CROUCH_HEIGHT: float = 1
const CAMERA_HEIGHT_SPEED: float = 5
const CAMERA_RUN_EXTRA_FOV: float = 5
const CAMERA_FOV_SPEED: float = 50

@export var _respawn_height: float = -100

var _peer_id: int = 1
var _respawn_point: Vector3
var _default_camera_height: float

var _crouch: bool = false
var _run: bool = false

@onready var _camera: Camera3D = $Camera3D
@onready var _name_label: Label3D = $NameLabel


func _enter_tree() -> void:
	_peer_id = str(name).to_int()
	print("Player ", Networker.player_name(_peer_id), " enter tree")
	set_multiplayer_authority(_peer_id)


func _ready() -> void:
	Networker.player_registered.connect(_on_networker_player_registered)
	if not is_multiplayer_authority():
		return

	_default_camera_height = _camera.position.y
	_respawn_point = global_position
	_camera.make_current()
	Referencer.player = self
	Referencer.camera = _camera
	print("Player ", Networker.player_name(_peer_id), " ready authority")


func _exit_tree() -> void:
	print("Player ", Networker.player_name(_peer_id), " exit tree")
	if Networker.is_active() and not is_multiplayer_authority():
		return

	Referencer.player = null
	Referencer.camera = null


func _process(delta: float) -> void:
	if Networker.is_active() and not is_multiplayer_authority():
		Debugger.vector(
			"look" + str(name),
			_camera.global_position,
			_camera.global_position - _camera.global_basis.z
		)

		return

	_process_respawning()
	_process_controller_rotating(delta)
	_process_camera(delta)


func _physics_process(delta: float) -> void:
	if not is_multiplayer_authority():
		return

	_lateral_movement(delta)
	_vertical_movement(delta)

	_jumping()

	move_and_slide()


func _unhandled_input(event: InputEvent) -> void:
	if not is_multiplayer_authority():
		return

	if (
		not Inputer.can_control_player()
		or Input.mouse_mode != Input.MOUSE_MODE_CAPTURED
	):
		return

	if event is InputEventMouseMotion:
		_handle_mouse_rotating(event as InputEventMouseMotion)

	if event.is_action_pressed("crouch"):
		_crouch = true
	if event.is_action_released("crouch"):
		_crouch = false

	if event.is_action_pressed("run"):
		_run = true
	if event.is_action_released("run"):
		_run = false


func set_info(player_info: Dictionary) -> void:
	_name_label.text = player_info["name"]


func _process_respawning() -> void:
	if global_position.y < _respawn_height:
		global_position = _respawn_point
		velocity = Vector3.ZERO


func _process_controller_rotating(delta: float) -> void:
	var controller_raw_input := (
		Input
		. get_vector(
			"camera_left",
			"camera_right",
			"camera_up",
			"camera_down",
		)
	)

	var look_slow: float = 0.25 if Input.is_action_pressed("look_slow") else 1.0

	rotate_y(
		(
			-controller_raw_input.x
			* deg_to_rad(Settings.controller_sensitivity_horizontal)
			* look_slow
			* delta
			* (-1.0 if Settings.invert_controller_horizontal else 1.0)
		)
	)
	_camera.rotate_x(
		(
			-controller_raw_input.y
			* deg_to_rad(Settings.controller_sensitivity_vertical)
			* look_slow
			* delta
			* (-1.0 if Settings.invert_controller_vertical else 1.0)
		)
	)
	_camera.rotation.x = clampf(_camera.rotation.x, PI / -2, PI / 2)


func _process_camera(delta: float) -> void:
	var camera_height := _default_camera_height
	if _crouch:
		camera_height = CAMERA_CROUCH_HEIGHT
	_camera.position.y = move_toward(
		_camera.position.y, camera_height, CAMERA_HEIGHT_SPEED * delta
	)

	var camera_fov := Settings.camera_fov
	if _run:
		camera_fov += CAMERA_RUN_EXTRA_FOV
	_camera.fov = move_toward(_camera.fov, camera_fov, CAMERA_FOV_SPEED * delta)


func _lateral_movement(delta: float) -> void:
	var input_dir := Input.get_vector(
		"move_left", "move_right", "move_forward", "move_back"
	)
	var has_input := input_dir.length() > 0 and Inputer.can_control_player()

	if has_input:
		var direction := (
			(transform.basis * Vector3(input_dir.x, 0, input_dir.y)).normalized()
		)
		var speed := MOVE_SPEED
		Debugger.text("move_mode", "move", 2)
		if _crouch:
			speed = CROUCH_SPEED
			Debugger.text("move_mode", "crouch", 2)
		if _run:
			speed = RUN_SPEED
			Debugger.text("move_mode", "run", 2)
		var new_velocity := direction * speed
		new_velocity.y = velocity.y
		velocity = velocity.move_toward(new_velocity, MOVE_ACCELERATION * delta)
	else:
		var new_velocity := Vector3.ZERO
		new_velocity.y = velocity.y
		velocity = velocity.move_toward(new_velocity, MOVE_DECELERATION * delta)


func _vertical_movement(delta: float) -> void:
	if not is_on_floor():
		var new_velocity := velocity
		new_velocity.y = -FALL_SPEED
		velocity = velocity.move_toward(new_velocity, FALL_ACCELERATION * delta)
	else:
		velocity.y = 0


func _jumping() -> void:
	if (
		Inputer.can_control_player()
		and Input.is_action_just_pressed("jump")
		and is_on_floor()
	):
		velocity.y = JUMP_FORCE


func _handle_mouse_rotating(event: InputEventMouseMotion) -> void:
	var sensitivity := deg_to_rad(Settings.mouse_sensitivity)

	rotate_y(
		(
			-event.screen_relative.x
			* sensitivity
			* (-1 if Settings.invert_mouse_horizontal else 1)
		)
	)

	_camera.rotate_x(
		(
			-event.screen_relative.y
			* sensitivity
			* (-1 if Settings.invert_mouse_vertical else 1)
		)
	)
	_camera.rotation.x = clamp(_camera.rotation.x, -PI / 2, PI / 2)


func _on_networker_player_registered(peer_id: int, player_info: Dictionary) -> void:
	if peer_id != _peer_id:
		return
	set_info(player_info)