class_name SteamBootstrap
extends RefCounted

# Spacewar is Valve's development App ID. It is intentionally a development
# default, never a public-server identity or discovery configuration.
const SPACEWAR_APP_ID := 480
const APP_ID_ENV := "COSMIC_CLASH_STEAM_APP_ID"


static func app_id() -> int:
	var configured := OS.get_environment(APP_ID_ENV).strip_edges()
	if configured.is_valid_int() and int(configured) > 0:
		return int(configured)
	return SPACEWAR_APP_ID


static func is_runtime_available() -> bool:
	return OS.has_feature("steam") and ClassDB.class_exists("SteamMultiplayerPeer") and Engine.has_singleton("Steam")


static func unavailable_reason() -> String:
	if not OS.has_feature("steam"):
		return "this export was not built with the steam feature"
	if not ClassDB.class_exists("SteamMultiplayerPeer"):
		return "SteamMultiplayerPeer is missing from this custom Godot build"
	if not Engine.has_singleton("Steam"):
		return "the GodotSteam Steam singleton is missing from this custom Godot build"
	return "Steam is unavailable"


static func initialize() -> Dictionary:
	if not is_runtime_available():
		return {"error": ERR_UNAVAILABLE, "reason": unavailable_reason()}
	var steam := Engine.get_singleton("Steam")
	# `steamInit` is deliberately called dynamically: stock Godot must be able
	# to parse and run this project without GodotSteam symbols installed.
	var result = steam.call("steamInit")
	if result is bool and result:
		return {"error": OK, "app_id": app_id()}
	if result is Dictionary and bool(result.get("status", false)):
		return {"error": OK, "app_id": app_id()}
	return {"error": ERR_CANT_CONNECT, "reason": "Steam initialization failed for App ID %d" % app_id()}