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/* Wombat personal information server - main file
 *
 * Author: Nat Friedman <nat@ximian.com>
 *
 * Copyright 2000, Ximian, Inc.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

/* define this if you need/want to be able to send USR2 to wombat and
   get a list of the active backends */
/*#define DEBUG_BACKENDS*/

#include <stdlib.h>
#ifdef DEBUG_BACKENDS
#include <sys/signal.h>
#endif

#include <glib.h>
#include <libgnome/gnome-init.h>
#include <bonobo-activation/bonobo-activation.h>
#include <libgnomevfs/gnome-vfs-init.h>
#include <bonobo/bonobo-main.h>
#include <bonobo/bonobo-i18n.h>
#include <bonobo/bonobo-exception.h>
#include <bonobo/bonobo-generic-factory.h>

#include "pas/pas-book-factory.h"
#include "pas/pas-backend-file.h"
#include "pas/pas-backend-vcf.h"
#ifdef HAVE_LDAP
#include "pas/pas-backend-ldap.h"
#endif

#include "calendar/pcs/cal-factory.h"
#include "calendar/pcs/cal-backend-file-events.h"
#include "calendar/pcs/cal-backend-file-todos.h"
#include "calendar/pcs/cal-backend-http.h"

#include "wombat-interface-check.h"

#define CAL_FACTORY_OAF_ID "OAFIID:GNOME_Evolution_Wombat_CalendarFactory"
#define PAS_BOOK_FACTORY_OAF_ID "OAFIID:GNOME_Evolution_Wombat_ServerFactory"

/* The and addressbook calendar factories */

static CalFactory *cal_factory;

static PASBookFactory *pas_book_factory;

/* Timeout interval in milliseconds for termination */
#define EXIT_TIMEOUT 5000

/* Timeout ID for termination handler */
static guint termination_handler_id;



/* Termination */

/* Termination handler.  Checks if both factories have zero running backends,
 * and if so terminates the program.
 */
static gboolean
termination_handler (gpointer data)
{
    if (cal_factory_get_n_backends (cal_factory) == 0 &&
        pas_book_factory_get_n_backends (pas_book_factory) == 0) {
        fprintf (stderr, "termination_handler(): Terminating the Wombat.  Have a nice day.\n");
        bonobo_main_quit ();
    }

    termination_handler_id = 0;
    return FALSE;
}

/* Queues a timeout for handling termination of Wombat */
static void
queue_termination (void)
{
    if (termination_handler_id)
        return;

    termination_handler_id = g_timeout_add (EXIT_TIMEOUT, termination_handler, NULL);
}



static void
last_book_gone_cb (PASBookFactory *factory, gpointer data)
{
    queue_termination ();
}

static gboolean
setup_pas (void)
{
    pas_book_factory = pas_book_factory_new ();

    if (!pas_book_factory)
        return FALSE;

    pas_book_factory_register_backend (
        pas_book_factory, "file", pas_backend_file_new);

    pas_book_factory_register_backend (
        pas_book_factory, "vcf", pas_backend_vcf_new);

#ifdef HAVE_LDAP
    pas_book_factory_register_backend (
        pas_book_factory, "ldap", pas_backend_ldap_new);
#endif

    g_signal_connect (pas_book_factory,
              "last_book_gone",
              G_CALLBACK (last_book_gone_cb),
              NULL);

    if (!pas_book_factory_activate (pas_book_factory, PAS_BOOK_FACTORY_OAF_ID)) {
        bonobo_object_unref (BONOBO_OBJECT (pas_book_factory));
        pas_book_factory = NULL;
        return FALSE;
    }

    return TRUE;
}


/* Personal calendar server */

/* Callback used when the calendar factory has no more running backends */
static void
last_calendar_gone_cb (CalFactory *factory, gpointer data)
{
    queue_termination ();
}

/* Creates the calendar factory object and registers it */
static gboolean
setup_pcs (void)
{
    cal_factory = cal_factory_new ();

    if (!cal_factory) {
        g_message ("setup_pcs(): Could not create the calendar factory");
        return FALSE;
    }

    cal_factory_register_method (cal_factory, "file", ICAL_VEVENT_COMPONENT, CAL_BACKEND_FILE_EVENTS_TYPE);
    cal_factory_register_method (cal_factory, "file", ICAL_VTODO_COMPONENT, CAL_BACKEND_FILE_TODOS_TYPE);
    cal_factory_register_method (cal_factory, "webcal", ICAL_VEVENT_COMPONENT, CAL_BACKEND_HTTP_TYPE);

    if (!cal_factory_register_storage (cal_factory, CAL_FACTORY_OAF_ID)) {
        bonobo_object_unref (BONOBO_OBJECT (cal_factory));
        cal_factory = NULL;
        return FALSE;
    }

    g_signal_connect (G_OBJECT (cal_factory),
              "last_calendar_gone",
              G_CALLBACK (last_calendar_gone_cb),
              NULL);

    return TRUE;
}


/* Interface check iface.  */

static gboolean
setup_interface_check (void)
{
    WombatInterfaceCheck *interface_check_iface = wombat_interface_check_new ();
    int result;

    result = bonobo_activation_active_server_register ("OAFIID:GNOME_Evolution_Wombat_InterfaceCheck",
                               BONOBO_OBJREF (interface_check_iface));

    return result == Bonobo_ACTIVATION_REG_SUCCESS;
}



#ifdef DEBUG_BACKENDS
static void
dump_backends (int signal)
{
    pas_book_factory_dump_active_backends (pas_book_factory);
    cal_factory_dump_active_backends (cal_factory);
}
#endif

int
main (int argc, char **argv)
{
    gboolean did_pas=FALSE, did_pcs=FALSE;

    bindtextdomain (GETTEXT_PACKAGE, EVOLUTION_LOCALEDIR);
    textdomain (GETTEXT_PACKAGE);

    g_message ("Starting wombat");

#ifdef DEBUG_BACKENDS
    signal (SIGUSR2, dump_backends);
#endif

        gnome_program_init ("Wombat", VERSION,
                LIBGNOME_MODULE,
                argc, argv,
                GNOME_PROGRAM_STANDARD_PROPERTIES, NULL);

    bonobo_init_full (&argc, argv,
              bonobo_activation_orb_get(),
              CORBA_OBJECT_NIL,
              CORBA_OBJECT_NIL);

    if (!( (did_pas = setup_pas ())
           && (did_pcs = setup_pcs ())
            )) {

        const gchar *failed = NULL;

        if (!did_pas)
            failed = "PAS";
        else if (!did_pcs)
            failed = "PCS";

        g_message ("main(): could not initialize Wombat service \"%s\"; terminating", failed);

        if (pas_book_factory) {
            bonobo_object_unref (BONOBO_OBJECT (pas_book_factory));
            pas_book_factory = NULL;
        }

        if (cal_factory) {
            bonobo_object_unref (BONOBO_OBJECT (cal_factory));
            cal_factory = NULL;
        }
        exit (EXIT_FAILURE);
    }

    if (! setup_interface_check ()) {
        g_message ("Cannot register Wombat::InterfaceCheck object");
        exit (EXIT_FAILURE);
    }

    g_print ("Wombat up and running\n");

    bonobo_main ();

    bonobo_object_unref (BONOBO_OBJECT (cal_factory));
    cal_factory = NULL;

    bonobo_object_unref (BONOBO_OBJECT (pas_book_factory));
    pas_book_factory = NULL;

    gnome_vfs_shutdown ();

    return 0;
}