extends Control

const MAX_CLIENTS = 1
const DEFAULT_PORT = 8383

const RANDOM_NAMES = [
	"Guy Likely",
	"Roy G. Biv",
	"Narbacular Strunk",
	"Eco Sourcepower",
	"Monty Carlo",
	"Banana Joe",
	"Chunk Busko",
	"Flip Moran",
	"Motrin Onesie",
	"Kobe Sparrow",
	"Jambo Wallende",
	"Corbyn Kingston",
	"Andrej Wojnicz",
	"Ouija Kinkade",
	"Angel Gullhammer",
	"Skeleton Collector",
	"Bosko Stanislav",
	"Lieutenant Nudisco",
	"Trace Slamvector",
	"Barrison Hegemon",
	"Bux Amillion",
]

@export var game_scene: PackedScene

@onready var main_menu: VBoxContainer = %MainMenu
@onready var host_menu: VBoxContainer = %HostMenu
@onready var join_menu: VBoxContainer = %JoinMenu

@onready var name_input: LineEdit = %NameInput
@onready var host_port_input: SpinBox = %HostPortInput
@onready var hostname_input: LineEdit = %HostnameInput
@onready var join_port_input: SpinBox = %JoinPortInput

@onready var err_already_in_use: ColorRect = %ErrAlreadyInUse
@onready var err_cant_create: ColorRect = %ErrCantCreate


func _ready() -> void:
	name_input.text = RANDOM_NAMES.pick_random()
	host_port_input.value = DEFAULT_PORT
	join_port_input.value = DEFAULT_PORT


func quit() -> void:
	get_tree().quit()


func show_host_menu() -> void:
	main_menu.hide()
	join_menu.hide()
	host_menu.show()


func show_join_menu() -> void:
	main_menu.hide()
	host_menu.hide()
	join_menu.show()


func show_main_menu() -> void:
	host_menu.hide()
	join_menu.hide()
	main_menu.show()


func _build_game() -> Game:
	var game: Game = game_scene.instantiate()
	game.player_name = name_input.text
	return game


func _peer_ok(err: Error) -> bool:
	match err:
		ERR_ALREADY_IN_USE:
			err_already_in_use.show()
			return false
		ERR_CANT_CREATE:
			err_cant_create.show()
			return false
	return true


func start_host_lobby() -> void:
	var peer := ENetMultiplayerPeer.new()
	if not _peer_ok(peer.create_server(int(host_port_input.value), MAX_CLIENTS)):
		return

	var game: Game = _build_game()
	add_sibling(game)
	game.multiplayer.multiplayer_peer = peer
	queue_free()


func join_lobby() -> void:
	var peer := ENetMultiplayerPeer.new()
	if not _peer_ok(peer.create_client(hostname_input.text, int(join_port_input.value))):
		return

	var game: Game = _build_game()
	add_sibling(game)
	game.multiplayer.multiplayer_peer = peer
	queue_free()