newgrounds login system :)

autoloads/ngio.gd

@@ -2,10 +2,19 @@ extends Node
 
 
 const GATEWAY_URI: String = "https://newgrounds.io/gateway_v3.php"
+const SESSION_FILE: String = "user://ngio.pr"
+const EMPTY_SESSION: Dictionary = {
+	expired = true,
+	id = "",
+	passport_url = "",
+	remember = false,
+	user = null,
+}
 
 
 var app_id: String = "" # app id on newgrounds
 var aes_key := PoolByteArray([]) # AES-128/Base64 encryption key
+var session: Dictionary = EMPTY_SESSION
 var keys_loaded: bool = false # whether id and key have been loaded from ini file
 
 var http := HTTPRequest.new() # http request node
@@ -27,6 +36,7 @@ func _ready() -> void:
 	if app_id == "":
 		push_error("Failed to load ngio data. Will not be able to access scoreboards.")
 		keys_loaded = false
+		return
 	else:
 		keys_loaded = true
 	
@@ -41,15 +51,77 @@ func _ready() -> void:
 	
 	# initialize rng for encryption
 	rng.randomize()
+	
+	# try to load saved session
+	if not yield(load_saved_session(), "completed"):
+		yield(start_new_session(), "completed")
 
 
-func _test_http() -> void:
-	print(yield(request_execute("Gateway.getDatetime"), "completed"))
+## attempts to load a saved newgrounds.io session
+## returns true if the loaded session is valid
+func load_saved_session() -> bool:
+	var ini = ConfigFile.new()
+	var err = ini.load(SESSION_FILE)
+	# fail if can't load ngio.pr
+	if err != OK:
+		session = EMPTY_SESSION
+	session.id = ini.get_value("ngio", "session_id", "")
+	# check session is valid
+	var response = yield(request_execute("App.checkSession"), "completed")
+	if has_result(response):
+		var result = response.result
+		if result.data.success and not result.data.session.expired:
+			session = result.data.session
+			return true
+	session = EMPTY_SESSION
+	ini.set_value("ngio", "session_id", "")
+	ini.save(SESSION_FILE)
+	return false
+
+
+## start new session
+func start_new_session() -> bool:
+	var response = yield(request_execute("App.startSession"), "completed")
+	if has_result(response):
+		var result = response.result
+		if result.data.success and not result.data.session.expired:
+			session = result.data.session
+			return true
+	session = EMPTY_SESSION
+	return false
+
+
+## repeatedly checks session until it is logged in or cancelled
+func passport_check() -> bool:
+	# attempt for maximum of 5 minutes
+	var attempts = 60
+	while attempts > 0:
+		attempts -= 1
+		yield(get_tree().create_timer(5.0), "timeout")
+		var response = yield(request_execute("App.checkSession"), "completed")
+		if has_result(response):
+			var result = response.result
+			if result.data.success:
+				if result.data.session.user:
+					session = result.data.session
+					if session.remember:
+						var ini = ConfigFile.new()
+						ini.set_value("ngio", "session_id", session.id)
+						ini.save(SESSION_FILE)
+					return true
+			else:
+				return false
+	return false
+
+
+## checks if a response is valid and succeeded
+func has_result(response: Dictionary) -> bool:
+	return "success" in response and response.success
 
 
 ## requests the provided component be executed, do not call async :/
 # may call with either single or multiple components
-func request_execute(component: String, parameters: Dictionary = {}, session_id: String = "", echo: String = "", encrypt: bool = false) -> Dictionary:
+func request_execute(component: String, parameters: Dictionary = {}, echo: String = "", encrypt: bool = false) -> Dictionary:
 	# build request headers
 	var headers = [
 		"Content-Type: application/x-www-form-urlencoded",
@@ -88,7 +160,7 @@ func request_execute(component: String, parameters: Dictionary = {}, session_id:
 	# compose request body
 	var request = {
 		app_id = app_id,
-		session_id = session_id,
+		session_id = session.id,
 		execute = execute,
 	}
 	var body = "input=" + to_json(request).percent_encode()
@@ -98,6 +170,7 @@ func request_execute(component: String, parameters: Dictionary = {}, session_id:
 	yield(http, "request_completed")
 	return _response
 
+
 ## called when the HTTPRequest gets a responce
 func _http_request_completed(result: int, response_code: int, headers: PoolStringArray, body: PoolByteArray) -> void:
 	if response_code == 200: