#include <glib.h>
#include <gio/gio.h>
#include <stdio.h>
#define AGENT_PATH "/org/bluez/AutoPinAgent"

int main(void) {
    GError *err = NULL;
    GMainLoop *loop;
    loop = g_main_loop_new(NULL, FALSE);

    GDBusConnection *conn = g_bus_get_sync(G_BUS_TYPE_SYSTEM, NULL, &err);


    if(err != NULL) {
        g_print("%s\n%s\n", "Error while attempting to establish a connection with DBUS", err->message);
        return 1;
    } else {
        g_print("\n%s\n", "Connection to DBUS successful!");
    }

    GDBusProxy *agent_manager_proxy = g_dbus_proxy_new_sync(conn,
                                                    G_DBUS_PROXY_FLAGS_NONE,
                                                    NULL,
                                                    "org.bluez",
                                                    "/org/bluez",
                                                    "org.bluez.AgentManager1",
                                                    NULL,
                                                    &err);
    if(err != NULL) {
        g_print("%s\n%s\n", "Error while attempting to create agent proxy", err->message);
        return 1;
    } else {
        g_print("\n%s\n", "Agent proxy created!");
    }

    g_dbus_proxy_call_sync(agent_manager_proxy,
                          "RegisterAgent",
                          g_variant_new("(os)", AGENT_PATH, "NoInputNoOutput"),
                          G_DBUS_CALL_FLAGS_NONE,
                          -1,
                          NULL,
                          &err);

    if(err != NULL) {
        g_print("%s\n%s\n", "Error while attempting to register agent", err->message);
        return 1;
    } else {
        g_print("\n%s\n", "Agent registered.");
    }

    g_dbus_proxy_call_sync(agent_manager_proxy,
                           "RequestDefaultAgent",
                           g_variant_new("(o)", AGENT_PATH),
                           G_DBUS_CALL_FLAGS_NONE,
                           -1,
                           NULL,
                           &err);

    if(err != NULL) {
        g_print("%s\n%s\n", "Error while attempting to register agent", err->message);
        return 1;
    } else {
        g_print("\n%s\n", "Agent now default.");
    }


    GDBusProxy *device_proxy = g_dbus_proxy_new_sync(conn,
                                                     G_DBUS_PROXY_FLAGS_NONE,
                                                     NULL,
                                                     "org.bluez",
                                                     "/org/bluez/hci0/dev_DC_3F_32_42_62_B0",
                                                     "org.bluez.Device1",
                                                     NULL,
                                                     &err);
    if(err != NULL) {
        g_print("%s\n%s\n", "Error while attempting to create device proxy", err->message);
        return 1;
    } else {
        g_print("\n%s\n", "Device proxy created!");
    }


    g_dbus_proxy_call_sync(device_proxy,
                           "Pair",
                           NULL,
                           G_DBUS_CALL_FLAGS_NONE,
                           -1,
                           NULL,
                           &err);
    if(err != NULL) {
        g_print("%s\n%s\n", "Pair error", err->message);
        return 1;
    } else {
        g_print("\n%s\n", "Device paired!");
    }



    g_dbus_proxy_call_sync(device_proxy,
                           "Connect",
                           NULL,
                           G_DBUS_CALL_FLAGS_NONE,
                           -1,
                           NULL,
                           &err);
    if(err != NULL) {
        g_print("%s\n%s\n", "Error while attempting to create device proxy", err->message);
        return 1;
    } else {
        g_print("\n%s\n", "Device connected!");
    }

    g_main_loop_run(loop);
    g_object_unref(conn);
}