extends Control

const REFRESH_SERVER_DELAY = 5.0

export var scale = 4 setget set_scale
export var upThreshold = 1.0/59.0
export var downThreshold = 1.0/30.0

export var delay = 1.0
export var refresh_server_remaining = REFRESH_SERVER_DELAY

onready var viewport = $Viewport
onready var background = $Background
onready var netgame = $"/root/Multiplayer"
onready var server_list = $Popup/MarginContainer/VBoxContainer/ItemList

var servers = []

func _ready() -> void:
	set_scale(scale)
	$"/root/Music/BGM".play()
	netgame.connect("ms_updated", self, "_ms_update")
	request_servers()

func _process(delta: float) -> void:
	refresh_server_remaining -= delta
	if refresh_server_remaining <= 0:
		request_servers()
		refresh_server_remaining = REFRESH_SERVER_DELAY
	# Give the system time to adjust
	if delay > 0:
		delay -= delta
		return
	if delta > downThreshold:
		print("GPU is taking too much (", delta, "s < ", downThreshold, "s), adjusting shader scale")
		set_scale(scale+1)
	elif delta < upThreshold and scale > 2:
		print("GPU is taking it easy (", delta, "s < ", upThreshold, "s), adjusting shader scale")
		set_scale(scale-1)

func request_servers():
	netgame.ms_get_entries()

func _ms_update(action, result):
	if action == "list_games":
		# Reset server list
		server_list.clear()
		servers = result
		for server in servers:
			server_list.add_item(server.data.name + " (" + server.address + ") - " + str(server.data.players) + "/" + str(server.data.max_players) + " players")

func set_scale(val) -> void:
	scale = val
	if viewport:
		viewport.size = rect_size / scale
		background.update()

func _on_resized() -> void:
	if viewport:
		viewport.size = rect_size / scale
		background.update()

func _host_pressed() -> void:
	$"/root/Music/BGM".stop()
	$"/root/Multiplayer".host()

func _join_pressed() -> void:
	$Popup.popup_centered_ratio()

func join_server(server) -> void:
	$"/root/Music/BGM".stop()
	netgame.join(server)

func _server_addr_changed(new_text: String) -> void:
	$Popup/MarginContainer/VBoxContainer/HBoxContainer/Button.disabled = new_text.length() < 1

func _manual_join_pressed():
	join_server({ "address": $Popup/MarginContainer/VBoxContainer/HBoxContainer/LineEdit.text })

func _server_item_clicked(index):
	$"/root/Music/BGM".stop()
	join_server(servers[index])