path: root/calendar/gui/itip-utils.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Authors:
 *  JP Rosevear <jpr@ximian.com>
 *
 * Copyright 2001, Ximian, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

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

#include <bonobo/bonobo-exception.h>
#include <bonobo/bonobo-object.h>
#include <bonobo/bonobo-object-client.h>
#include <bonobo/bonobo-moniker-util.h>
#include <bonobo-conf/bonobo-config-database.h>
#include <libgnome/gnome-defs.h>
#include <libgnome/gnome-i18n.h>
#include <libgnomeui/gnome-dialog.h>
#include <libgnomeui/gnome-dialog-util.h>
#include <gtk/gtkwidget.h>
#include <gal/util/e-util.h>
#include <e-util/e-unicode-i18n.h>
#include <ical.h>
#include <Evolution-Composer.h>
#include <e-util/e-time-utils.h>
#include <cal-util/timeutil.h>
#include <cal-util/cal-util.h>
#include "calendar-config.h"
#include "itip-utils.h"

#define GNOME_EVOLUTION_COMPOSER_OAFIID "OAFIID:GNOME_Evolution_Mail_Composer"

static gchar *itip_methods[] = {
    "PUBLISH",
    "REQUEST",
    "REPLY",
    "ADD",
    "CANCEL",
    "RERESH",
    "COUNTER",
    "DECLINECOUNTER"
};

static icalproperty_method itip_methods_enum[] = {
    ICAL_METHOD_PUBLISH,
    ICAL_METHOD_REQUEST,
    ICAL_METHOD_REPLY,
    ICAL_METHOD_ADD,
    ICAL_METHOD_CANCEL,
    ICAL_METHOD_REFRESH,
    ICAL_METHOD_COUNTER,
    ICAL_METHOD_DECLINECOUNTER,
};

static void
error_dialog (gchar *str) 
{
    GtkWidget *dlg;
    
    dlg = gnome_error_dialog (str);
    gnome_dialog_run_and_close (GNOME_DIALOG (dlg));
}

GList *
itip_addresses_get (void)
{
    static Bonobo_ConfigDatabase db = NULL;
    CORBA_Environment ev;
    GList *addresses = NULL;
    glong len, def, i;

    if (db == NULL) {
        CORBA_exception_init (&ev);
 
        db = bonobo_get_object ("wombat:", 
                    "Bonobo/ConfigDatabase", 
                    &ev);
    
        if (BONOBO_EX (&ev) || db == CORBA_OBJECT_NIL) {
            CORBA_exception_free (&ev);
            return NULL;
        }
        
        CORBA_exception_free (&ev);
    }
    
    len = bonobo_config_get_long_with_default (db, "/Mail/Accounts/num", 0, NULL);
    def = bonobo_config_get_long_with_default (db, "/Mail/Accounts/default_account", 0, NULL);

    for (i = 0; i < len; i++) {
        ItipAddress *a;
        gchar *path;
        
        a = g_new0 (ItipAddress, 1);

        /* get the identity info */
        path = g_strdup_printf ("/Mail/Accounts/identity_name_%ld", i);
        a->name = bonobo_config_get_string (db, path, NULL);
        g_free (path);

        path = g_strdup_printf ("/Mail/Accounts/identity_address_%ld", i);
        a->address = bonobo_config_get_string (db, path, NULL);
        g_free (path);

        if (i == def)
            a->default_address = TRUE;

        a->full = g_strdup_printf ("%s <%s>", a->name, a->address);
        addresses = g_list_append (addresses, a);
    }

    return addresses;
}

void
itip_addresses_free (GList *addresses)
{
    GList *l;
    
    for (l = addresses; l != NULL; l = l->next) {
        ItipAddress *a = l->data;

        g_free (a->name);
        g_free (a->address);
        g_free (a->full);
        g_free (a);
    }
    g_list_free (addresses);
}

const gchar *
itip_strip_mailto (const gchar *address) 
{
    const gchar *text;
    
    if (address == NULL)
        return NULL;
    
    text = e_strstrcase (address, "mailto:");
    if (text != NULL && strlen (address) > 7)
        address += 7;

    return address;
}

static char *
get_label (struct icaltimetype *tt)
{
    char buffer[1000];
    struct tm tmp_tm = { 0 };
    
    tmp_tm.tm_year = tt->year - 1900;
    tmp_tm.tm_mon = tt->month - 1;
    tmp_tm.tm_mday = tt->day;
    tmp_tm.tm_hour = tt->hour;
    tmp_tm.tm_min = tt->minute;
    tmp_tm.tm_sec = tt->second;
    tmp_tm.tm_isdst = -1;

    tmp_tm.tm_wday = time_day_of_week (tt->day, tt->month - 1, tt->year);

    e_time_format_date_and_time (&tmp_tm,
                     calendar_config_get_24_hour_format (), 
                     FALSE, FALSE,
                     buffer, 1000);
    
    return g_strdup (buffer);
}

static void
foreach_tzid_callback (icalparameter *param, gpointer data)
{
    icalcomponent *icomp = data;
    const char *tzid;
    icaltimezone *zone;
    icalcomponent *vtimezone_comp;

    /* Get the TZID string from the parameter. */
    tzid = icalparameter_get_tzid (param);
    if (!tzid)
        return;

    /* Check if it is a builtin timezone. If it isn't, return. */
    zone = icaltimezone_get_builtin_timezone_from_tzid (tzid);
    if (!zone)
        return;

    /* Convert it to a string and add it to the hash. */
    vtimezone_comp = icaltimezone_get_component (zone);
    if (!vtimezone_comp)
        return;

    icalcomponent_add_component (icomp, icalcomponent_new_clone (vtimezone_comp));
}

void
itip_send_comp (CalComponentItipMethod method, CalComponent *comp)
{
    BonoboObjectClient *bonobo_server;
    GNOME_Evolution_Composer composer_server;
    CORBA_Environment ev;
    GSList *attendees, *l;
    GNOME_Evolution_Composer_RecipientList *to_list, *cc_list, *bcc_list;
    GNOME_Evolution_Composer_Recipient *recipient;
    CORBA_char *subject;
    gint cntr, len;
    CalComponentVType type; 
    CalComponentText caltext;
    CalComponentOrganizer organizer;
    CORBA_char *content_type, *filename, *description;
    GNOME_Evolution_Composer_AttachmentData *attach_data;
    CORBA_boolean show_inline;
    char tempstr[200];
    
    CORBA_exception_init (&ev);

    /* Obtain an object reference for the Composer. */
    bonobo_server = bonobo_object_activate (GNOME_EVOLUTION_COMPOSER_OAFIID, 0);
    g_return_if_fail (bonobo_server != NULL);

    composer_server = BONOBO_OBJREF (bonobo_server);

    /* Type for later use */
    type = cal_component_get_vtype (comp);

    /* Create list of recipients */
    switch (method) {
    case CAL_COMPONENT_METHOD_REQUEST:
    case CAL_COMPONENT_METHOD_CANCEL:
        cal_component_get_attendee_list (comp, &attendees);
        len = g_slist_length (attendees);
        
        to_list = GNOME_Evolution_Composer_RecipientList__alloc ();
        to_list->_maximum = len;
        to_list->_length = len;
        to_list->_buffer = CORBA_sequence_GNOME_Evolution_Composer_Recipient_allocbuf (len);
        
        for (cntr = 0, l = attendees; cntr < len; cntr++, l = l->next) {
            CalComponentAttendee *att = l->data;
            
            recipient = &(to_list->_buffer[cntr]);
            if (att->cn)
                recipient->name = CORBA_string_dup (att->cn);
            else
                recipient->name = CORBA_string_dup ("");
            recipient->address = CORBA_string_dup (itip_strip_mailto (att->value));
        }
        break;

    case CAL_COMPONENT_METHOD_REPLY:
    case CAL_COMPONENT_METHOD_ADD:
    case CAL_COMPONENT_METHOD_REFRESH:
    case CAL_COMPONENT_METHOD_COUNTER:
    case CAL_COMPONENT_METHOD_DECLINECOUNTER:
        cal_component_get_organizer (comp, &organizer);
        if (organizer.value == NULL) {
            error_dialog (_("An organizer must be set."));
            return;
        }
        
        len = 1;

        to_list = GNOME_Evolution_Composer_RecipientList__alloc ();
        to_list->_maximum = len;
        to_list->_length = len;
        to_list->_buffer = CORBA_sequence_GNOME_Evolution_Composer_Recipient_allocbuf (len);
        recipient = &(to_list->_buffer[0]);

        if (organizer.cn != NULL)
            recipient->name = CORBA_string_dup (organizer.cn);
        else
            recipient->name = CORBA_string_dup ("");
        recipient->address = CORBA_string_dup (itip_strip_mailto (organizer.value));
        break;

    default:
        to_list = GNOME_Evolution_Composer_RecipientList__alloc ();
        to_list->_maximum = to_list->_length = 0;
        break;
    }

    cc_list = GNOME_Evolution_Composer_RecipientList__alloc ();
    cc_list->_maximum = cc_list->_length = 0;
    bcc_list = GNOME_Evolution_Composer_RecipientList__alloc ();
    bcc_list->_maximum = bcc_list->_length = 0;
    
    /* Subject information */
    cal_component_get_summary (comp, &caltext);
    if (caltext.value != NULL) {        
        subject = CORBA_string_dup (caltext.value);
    } else {
        switch (type) {
        case CAL_COMPONENT_EVENT:
            subject = CORBA_string_dup ("Event information");
            break;
        case CAL_COMPONENT_TODO:
            subject = CORBA_string_dup ("Task information");
            break;
        case CAL_COMPONENT_JOURNAL:
            subject = CORBA_string_dup ("Journal information");
            break;
        case CAL_COMPONENT_FREEBUSY:
            subject = CORBA_string_dup ("Free/Busy information");
            break;
        default:
            subject = CORBA_string_dup ("Calendar information");
        }       
    }
    
    /* Set recipients, subject */
    GNOME_Evolution_Composer_setHeaders (composer_server, to_list, cc_list, bcc_list, subject, &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        g_warning ("Unable to set composer headers while sending iTip message");
        CORBA_exception_free (&ev);
        return;
    }

    /* Content type, suggested file name, description */
    sprintf (tempstr, "text/calendar;METHOD=%s", itip_methods[method]);
    content_type = CORBA_string_dup (tempstr);
    if (type == CAL_COMPONENT_FREEBUSY)
        filename = CORBA_string_dup ("freebusy.ifb");
    else
        filename = CORBA_string_dup ("calendar.ics");
    switch (type) {
    case CAL_COMPONENT_EVENT:
        description = CORBA_string_dup ("Event information");
        break;
    case CAL_COMPONENT_TODO:
        description = CORBA_string_dup ("Task information");
        break;
    case CAL_COMPONENT_JOURNAL:
        description = CORBA_string_dup ("Journal information");
        break;
    case CAL_COMPONENT_FREEBUSY:
    {
        CalComponentDateTime dt;
        char *start = NULL, *end = NULL;
        
        cal_component_get_dtstart (comp, &dt);
        if (dt.value) {
            start = get_label (dt.value);
            cal_component_get_dtend (comp, &dt);
            if (dt.value)
                end = get_label (dt.value);
        }
        if (start != NULL && end != NULL) {
            snprintf (tempstr, 200, "Free/Busy information (%s to %s)", start, end);
            description = CORBA_string_dup (tempstr);
            g_free (start);
            g_free (end);
        } else {
            description = CORBA_string_dup ("Free/Busy information");
        }
    }
        break;
    default:
        description = CORBA_string_dup ("iCalendar information");
    }   
    show_inline = FALSE;

    /* Create a top level component, and add our component */
    {
        CalComponent *clone;        
        icalcomponent *icomp, *iclone;
        icalproperty *prop;
        icalvalue *value;
        gchar *ical_string;

        icomp = cal_util_new_top_level ();

        prop = icalproperty_new (ICAL_METHOD_PROPERTY);
        value = icalvalue_new_method (itip_methods_enum[method]);
        icalproperty_set_value (prop, value);
        icalcomponent_add_property (icomp, prop);

        /* Strip alarms if necessary */
        clone = cal_component_clone (comp);
        if (method == CAL_COMPONENT_METHOD_REPLY
            || method == CAL_COMPONENT_METHOD_CANCEL
            || method == CAL_COMPONENT_METHOD_REFRESH
            || method == CAL_COMPONENT_METHOD_DECLINECOUNTER)
            cal_component_remove_all_alarms (clone);
        
        iclone = cal_component_get_icalcomponent (clone);
        icalcomponent_add_component (icomp, iclone);

        icalcomponent_foreach_tzid (iclone, foreach_tzid_callback, icomp);

        ical_string = icalcomponent_as_ical_string (icomp);
        attach_data = GNOME_Evolution_Composer_AttachmentData__alloc ();
        attach_data->_maximum = attach_data->_length = strlen (ical_string);        
        attach_data->_buffer = CORBA_sequence_CORBA_char_allocbuf (attach_data->_length);   
        strcpy (attach_data->_buffer, ical_string);

        icalcomponent_free (icomp);
    }

    GNOME_Evolution_Composer_attachData (composer_server, 
                    content_type, filename, description,
                    show_inline, attach_data,
                    &ev);
    
    if (ev._major != CORBA_NO_EXCEPTION) {
        g_warning ("Unable to attach data to the composer while sending iTip message");
        CORBA_exception_free (&ev);
        return;
    }
    
    if (method == CAL_COMPONENT_METHOD_PUBLISH)
        GNOME_Evolution_Composer_show (composer_server, &ev);
    else
        GNOME_Evolution_Composer_send (composer_server, &ev);

    if (ev._major != CORBA_NO_EXCEPTION) {
        g_warning ("Unable to show the composer while sending iTip message");
        CORBA_exception_free (&ev);
        return;
    }
    
    CORBA_exception_free (&ev);

    /* Beware--depending on whether CORBA_free is recursive, which I
       think is is, we might have memory leaks, in which case the code
       below is necessary. */
#if 0
    for (cntr = 0; cntr < priv->numentries; cntr++) {
        recipient = &(to_list->_buffer[cntr]);
        CORBA_free (recipient->name);
        CORBA_free (recipient->address);
        recipient->name = recipient->address = NULL;
    }
#endif

    if (CORBA_sequence_get_release (to_list) != FALSE)
        CORBA_free (to_list->_buffer);

    CORBA_free (to_list);
    CORBA_free (cc_list);
    CORBA_free (bcc_list);

    CORBA_free (subject);
    CORBA_free (content_type);
    CORBA_free (filename);
    CORBA_free (description);
    CORBA_free (attach_data);

    /* bonobo_object_unref (BONOBO_OBJECT (bonobo_server));   */
}