/*
 * Copyright (C) 2020 Philip Withnall <pwithnall@endlessos.org>
 * Copyright (C) 2020 Richard Hughes <richard@hughsie.com>
 *
 * SPDX-License-Identifier: LGPL-2.1+
 */

#include <fwupd.h>

typedef struct {
	GApplication *app;
	FwupdClient *client;
	GThread *main_thread;
	GThread *worker_thread;
} FuThreadTestSelf;

static gboolean
fwupd_thread_test_exit_idle_cb(gpointer user_data)
{
	FuThreadTestSelf *self = user_data;
	g_application_release(self->app);
	return G_SOURCE_REMOVE;
}

static gpointer
fwupd_thread_test_thread_cb(gpointer user_data)
{
	FuThreadTestSelf *self = user_data;
	g_autoptr(GError) error_local = NULL;
	g_autoptr(GMainContext) context = g_main_context_new();
	g_autoptr(GMainContextPusher) pusher = g_main_context_pusher_new(context);

	g_assert_nonnull(pusher);
	g_message("Calling fwupd_client_get_devices() in thread %p with main context %p",
		  g_thread_self(),
		  g_main_context_get_thread_default());
	if (!fwupd_client_connect(self->client, NULL, &error_local))
		g_warning("%s", error_local->message);
	g_idle_add(fwupd_thread_test_exit_idle_cb, self);
	return NULL;
}

static gboolean
fwupd_thread_test_idle_cb(gpointer user_data)
{
	FuThreadTestSelf *self = user_data;
	g_message("fwupd_thread_test_idle_cb() in thread %p with main context %p",
		  g_thread_self(),
		  g_main_context_get_thread_default());
	self->worker_thread = g_thread_new("worker00", fwupd_thread_test_thread_cb, self);
	return G_SOURCE_REMOVE;
}

static void
fwupd_thread_test_activate_cb(GApplication *app, gpointer user_data)
{
	FuThreadTestSelf *self = user_data;
	g_application_hold(self->app);
	g_idle_add(fwupd_thread_test_idle_cb, self);
}

static void
fwupd_thread_test_notify_cb(GObject *object, GParamSpec *pspec, gpointer user_data)
{
	FuThreadTestSelf *self = user_data;
	g_message("fwupd_thread_test_notify_cb() in thread %p with main context %p",
		  g_thread_self(),
		  g_main_context_get_thread_default());
	g_assert_true(g_thread_self() == self->main_thread);
	g_assert_null(g_main_context_get_thread_default());
}

static gboolean
fwupd_thread_test_has_system_bus(void)
{
	g_autoptr(GDBusConnection) conn = NULL;
	conn = g_bus_get_sync(G_BUS_TYPE_SYSTEM, NULL, NULL);
	return conn != NULL;
}

int
main(void)
{
	gint retval;
	g_autoptr(FwupdClient) client = fwupd_client_new();
	g_autoptr(GApplication) app =
	    g_application_new("org.fwupd.ContextTest", G_APPLICATION_FLAGS_NONE);
	g_autoptr(GThread) worker_thread = NULL;
	FuThreadTestSelf self = {
	    .app = app,
	    .client = client,
	    .worker_thread = worker_thread,
	    .main_thread = g_thread_self(),
	};

	/* only some of the CI targets have a DBus daemon */
	if (!fwupd_thread_test_has_system_bus()) {
		g_message("D-Bus system bus unavailable, skipping tests.");
		return 0;
	}
	g_message("Created FwupdClient in thread %p with main context %p",
		  g_thread_self(),
		  g_main_context_get_thread_default());
	g_signal_connect(FWUPD_CLIENT(client),
			 "notify::status",
			 G_CALLBACK(fwupd_thread_test_notify_cb),
			 &self);
	g_signal_connect(G_APPLICATION(app),
			 "activate",
			 G_CALLBACK(fwupd_thread_test_activate_cb),
			 &self);
	retval = g_application_run(app, 0, NULL);
	if (self.worker_thread != NULL)
		g_thread_join(g_steal_pointer(&self.worker_thread));

	return retval;
}
