extends SceneTree

var failures := 0
var login: Control


func _initialize() -> void:
	call_deferred("_run")


func _run() -> void:
	login = load("res://scripts/ui/login_screen.gd").new()
	root.add_child(login)
	await process_frame
	_test_elapsed_timeout_clears_flow()
	_test_transient_failure_keeps_transaction()
	_test_leaving_completion_cancels_flow()
	_test_external_account_password_confirmation()
	login.queue_free()
	await process_frame
	quit(1 if failures > 0 else 0)


func _test_elapsed_timeout_clears_flow() -> void:
	login.steam_transaction_id = "expired-transaction"
	login.steam_poll_deadline_msec = 1
	login.poll_timer.start()
	login._poll_steam()
	_assert(login.steam_transaction_id.is_empty(), "elapsed Steam login deadline should clear the transaction")
	_assert(login.poll_timer.is_stopped(), "elapsed Steam login deadline should stop polling")


func _test_transient_failure_keeps_transaction() -> void:
	login.steam_transaction_id = "retry-transaction"
	login.steam_poll_deadline_msec = Time.get_ticks_msec() + 300000
	login.steam_poll_failures = 2
	login._on_steam_status(HTTPRequest.RESULT_CANT_CONNECT, 0, PackedStringArray(), PackedByteArray())
	_assert(login.steam_transaction_id == "retry-transaction", "temporary connection failures should preserve the Steam transaction")
	_assert(login.steam_poll_failures == 3, "temporary connection failures should be tracked without consuming the deadline")


func _test_leaving_completion_cancels_flow() -> void:
	login.mode = "steam"
	login.steam_transaction_id = "cancel-transaction"
	login.poll_timer.start()
	login._set_mode("login")
	_assert(login.steam_transaction_id.is_empty(), "leaving Steam account completion should clear its transaction")
	_assert(login.poll_timer.is_stopped(), "leaving Steam account completion should stop polling")


func _test_external_account_password_confirmation() -> void:
	login._on_steam_action_changed(0)
	_assert(login.steam_confirm_input.visible, "new external accounts should show password confirmation")
	_assert(login.steam_confirm_input.secret, "external password confirmation should be masked")
	_assert(
		login._validate_account("new_user", "new@example.com", "password-one", "password-two") == "Passwords do not match.",
		"external account creation should reject mismatched passwords")
	login.steam_confirm_input.text = "password-one"
	login._on_steam_action_changed(1)
	_assert(not login.steam_confirm_input.visible, "existing-account linking should hide password confirmation")
	_assert(login.steam_confirm_input.text.is_empty(), "hidden confirmation text should be cleared")


func _assert(condition: bool, message: String) -> void:
	if condition:
		return
	failures += 1
	push_error(message)