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path: root/plugins/publish-calendar/publish-calendar.c
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/*
 * Authors: David Trowbridge <trowbrds@cs.colorado.edu>
 *
 * Copyright (C) 2005 Novell, Inc. (www.novell.com)
 *
 * 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.
 *
 */

#include <string.h>
#include <gtk/gtk.h>
#include <glade/glade.h>
#include <gconf/gconf-client.h>
#include <libgnome/gnome-i18n.h>
#include <libgnomevfs/gnome-vfs.h>
#include <libedataserverui/e-passwords.h>
#include <calendar/gui/e-cal-popup.h>
#include <calendar/gui/e-cal-config.h>
#include <calendar/gui/e-cal-menu.h>
#include <shell/es-event.h>
#include <e-util/e-util-private.h>
#include "url-editor-dialog.h"
#include "publish-format-fb.h"
#include "publish-format-ical.h"

static GtkListStore *store = NULL;
static GHashTable *uri_timeouts = NULL;
static GSList *publish_uris = NULL;
static GSList *queued_publishes = NULL;
static gint online = 0;

int          e_plugin_lib_enable (EPlugin *ep, int enable);
void         action_publish (EPlugin *ep, ECalMenuTargetSelect *t);
void         online_state_changed (EPlugin *ep, ESEventTargetState *target);
void         publish_calendar_context_activate (EPlugin *ep, ECalPopupTargetSource *target);
GtkWidget   *publish_calendar_locations (EPlugin *epl, EConfigHookItemFactoryData *data);
static void  update_timestamp (EPublishUri *uri);
static void publish (EPublishUri *uri);

static void
publish_uri_async (EPublishUri *uri) 
{
    GThread *thread = NULL;
    GError *error = NULL;

    thread = g_thread_create ((GThreadFunc) publish, uri, FALSE, &error);
    if (!thread) {
        g_warning (G_STRLOC ": %s", error->message);
        g_error_free (error);
    }
}

static void
publish (EPublishUri *uri)
{
    if (online) {
        GnomeVFSURI *vfs_uri = NULL;
        GnomeVFSResult result;
        GnomeVFSHandle *handle;
        gchar *password;

        if (g_slist_find (queued_publishes, uri))
            queued_publishes = g_slist_remove (queued_publishes, uri);

        if (!uri->enabled)
            return;

        vfs_uri = gnome_vfs_uri_new (uri->location);

        password = e_passwords_get_password ("Calendar", uri->location);
        gnome_vfs_uri_set_password (vfs_uri, password);

        if (vfs_uri == NULL) {
            fprintf (stderr, "Couldn't create uri %s\n", uri->location);
            /* FIXME: EError */
            g_free (password);
            return;
        }

        result = gnome_vfs_create_uri (&handle, vfs_uri, GNOME_VFS_OPEN_WRITE, FALSE, 0666);
        if (result != GNOME_VFS_OK) {
            /* FIXME: EError */
            fprintf (stderr, "Couldn't open %s: %s\n", uri->location, gnome_vfs_result_to_string (result));
            g_free (password);
            return;
        }

        switch (uri->publish_format) {
        case URI_PUBLISH_AS_ICAL:
            publish_calendar_as_ical (handle, uri);
            break;
        case URI_PUBLISH_AS_FB:
            publish_calendar_as_fb (handle, uri);
            break;
/*
        case URI_PUBLISH_AS_HTML:
            publish_calendar_as_html (handle, uri);
            break;
*/
        }

        update_timestamp (uri);

        result = gnome_vfs_close (handle);
        gnome_vfs_uri_unref (vfs_uri);
        g_free (password);
    } else {
        if (g_slist_find (queued_publishes, uri) == NULL)
            queued_publishes = g_slist_prepend (queued_publishes, uri);
    }
}

typedef struct {
    GConfClient *gconf;
    GtkWidget   *treeview;
    GtkWidget   *url_add;
    GtkWidget   *url_edit;
    GtkWidget   *url_remove;
    GtkWidget   *url_enable;
} PublishUIData;

static void
add_timeout (EPublishUri *uri)
{
    guint id;

    /* Set the timeout for now+frequency */
    switch (uri->publish_frequency) {
    case URI_PUBLISH_DAILY:
        id = g_timeout_add (24 * 60 * 60 * 1000, (GSourceFunc) publish, uri);
        g_hash_table_insert (uri_timeouts, uri, GUINT_TO_POINTER (id));
        break;
    case URI_PUBLISH_WEEKLY:
        id = g_timeout_add (7 * 24 * 60 * 60 * 1000, (GSourceFunc) publish, uri);
        g_hash_table_insert (uri_timeouts, uri, GUINT_TO_POINTER (id));
        break;
    }
}

static void
update_timestamp (EPublishUri *uri)
{
    GConfClient *client;
    GSList *uris, *l;
    gchar *xml;
    guint id;

    /* Remove timeout if we have one */
    id = GPOINTER_TO_UINT (g_hash_table_lookup (uri_timeouts, uri));
    if (id) {
        g_source_remove (id);
        add_timeout (uri);
    }

    /* Update timestamp in gconf */
    xml = e_publish_uri_to_xml (uri);

    client = gconf_client_get_default ();
    uris = gconf_client_get_list (client, "/apps/evolution/calendar/publish/uris", GCONF_VALUE_STRING, NULL);
    for (l = uris; l; l = g_slist_next (l)) {
        gchar *d = l->data;
        if (strcmp (d, xml) == 0) {
            uris = g_slist_remove (uris, d);
            g_free (d);
            break;
        }
    }
    g_free (xml);

    if (uri->last_pub_time)
        g_free (uri->last_pub_time);
    uri->last_pub_time = g_strdup_printf ("%d", (int) time (NULL));

    uris = g_slist_prepend (uris, e_publish_uri_to_xml (uri));

    gconf_client_set_list (client, "/apps/evolution/calendar/publish/uris", GCONF_VALUE_STRING, uris, NULL);

    g_slist_foreach (uris, (GFunc) g_free, NULL);
    g_slist_free (uris);
    g_object_unref (client);
}

static void
add_offset_timeout (EPublishUri *uri)
{
    guint id;
    time_t offset = atoi (uri->last_pub_time);
    time_t current = time (NULL);
    gint elapsed = current - offset;

    switch (uri->publish_frequency) {
    case URI_PUBLISH_DAILY:
        if (elapsed > 24 * 60 * 60) {
            publish (uri);
            add_timeout (uri);
        } else {
            id = g_timeout_add (((24 * 60 * 60) - elapsed) * 1000, (GSourceFunc) publish, uri);
            g_hash_table_insert (uri_timeouts, uri, GUINT_TO_POINTER (id));
            break;
        }
        break;
    case URI_PUBLISH_WEEKLY:
        if (elapsed > 7 * 24 * 60 * 60) {
            publish (uri);
            add_timeout (uri);
        } else {
            id = g_timeout_add (((7 * 24 * 60 * 60) - elapsed) * 1000, (GSourceFunc) publish, uri);
            g_hash_table_insert (uri_timeouts, uri, GUINT_TO_POINTER (id));
            break;
        }
        break;
    }
}

static void
url_list_changed (PublishUIData *ui)
{
    GtkTreeModel *model = NULL;
    GSList *url_list = NULL;
    GtkTreeIter iter;
    gboolean valid;
    GConfClient *client;

    url_list = NULL;

    model = gtk_tree_view_get_model (GTK_TREE_VIEW (ui->treeview));
    valid = gtk_tree_model_get_iter_first (model, &iter);
    while (valid) {
        EPublishUri *url;
        char *xml;

        gtk_tree_model_get (model, &iter, URL_LIST_URL_COLUMN, &url, -1);

        if ((xml = e_publish_uri_to_xml (url)))
            url_list = g_slist_append (url_list, xml);

        valid = gtk_tree_model_iter_next (model, &iter);
    }
    client = gconf_client_get_default ();
    gconf_client_set_list (client, "/apps/evolution/calendar/publish/uris", GCONF_VALUE_STRING, url_list, NULL);
    g_slist_foreach (url_list, (GFunc) g_free, NULL);
    g_slist_free (url_list);
}

static void
url_list_enable_toggled (GtkCellRendererToggle *renderer,
                         const char            *path_string,
             PublishUIData         *ui)
{
    GtkTreeSelection *selection;
    EPublishUri *url = NULL;
    GtkTreeModel *model;
    GtkTreePath *path;
    GtkTreeIter iter;

    path = gtk_tree_path_new_from_string (path_string);
    model = gtk_tree_view_get_model (GTK_TREE_VIEW (ui->treeview));
    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (ui->treeview));

    if (gtk_tree_model_get_iter (model, &iter, path)) {
        gtk_tree_model_get (model, &iter, URL_LIST_URL_COLUMN, &url, -1);

        url->enabled = !url->enabled;

        if(url->enabled)
            gtk_widget_set_sensitive (ui->url_enable, FALSE);
        else
            gtk_widget_set_sensitive (ui->url_enable, TRUE);

        gtk_list_store_set (GTK_LIST_STORE (model), &iter, URL_LIST_ENABLED_COLUMN, url->enabled, -1);
    }

    gtk_tree_path_free (path);
}

static void
selection_changed (GtkTreeSelection *selection, PublishUIData *ui)
{
    GtkTreeModel *model;
    GtkTreeIter iter;
    EPublishUri *url = NULL;

    if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
        gtk_tree_model_get (model, &iter, URL_LIST_URL_COLUMN, &url, -1);
        gtk_widget_set_sensitive (ui->url_edit, TRUE);
        gtk_widget_set_sensitive (ui->url_remove, TRUE);

        if(url->enabled)
            gtk_widget_set_sensitive (ui->url_enable, FALSE);
        else
            gtk_widget_set_sensitive (ui->url_enable, TRUE);

    } else {
        gtk_widget_set_sensitive (ui->url_edit, FALSE);
        gtk_widget_set_sensitive (ui->url_remove, FALSE);
        gtk_widget_set_sensitive (ui->url_enable, FALSE);
    }
}

static void
url_add_clicked (GtkButton *button, PublishUIData *ui)
{
    GtkTreeModel *model;
    GtkTreeIter iter;
    GtkWidget *url_editor;
    EPublishUri *uri;

    model = gtk_tree_view_get_model (GTK_TREE_VIEW (ui->treeview));
    url_editor = url_editor_dialog_new (model, NULL);
    url_editor_dialog_run ((UrlEditorDialog *) url_editor);

    uri = URL_EDITOR_DIALOG (url_editor)->uri;
    if (uri->location) {
        gtk_list_store_append (GTK_LIST_STORE (model), &iter);
        gtk_list_store_set (GTK_LIST_STORE (model), &iter,
                    URL_LIST_ENABLED_COLUMN, uri->enabled,
                    URL_LIST_LOCATION_COLUMN, uri->location,
                    URL_LIST_URL_COLUMN, uri, -1);
        url_list_changed (ui);
        publish_uris = g_slist_prepend (publish_uris, uri);
        add_timeout (uri);
        publish_uri_async (uri);
    } else {
        g_free (uri);
    }
    gtk_widget_destroy (url_editor);
}

static void
url_edit_clicked (GtkButton *button, PublishUIData *ui)
{
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkTreeIter iter;

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (ui->treeview));
    if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
        EPublishUri *uri;
        GtkWidget *url_editor;
        guint id;

        gtk_tree_model_get (GTK_TREE_MODEL (model), &iter, 2, &uri, -1);
        url_editor = url_editor_dialog_new (model, uri);
        url_editor_dialog_run ((UrlEditorDialog *) url_editor);

        gtk_list_store_set (GTK_LIST_STORE (model), &iter,
                    URL_LIST_ENABLED_COLUMN, uri->enabled,
                    URL_LIST_LOCATION_COLUMN, uri->location,
                    URL_LIST_URL_COLUMN, uri, -1);

        id = GPOINTER_TO_UINT (g_hash_table_lookup (uri_timeouts, uri));
        if (id)
            g_source_remove (id);
        add_timeout (uri);
        url_list_changed (ui);
        publish_uri_async (uri);
    }
}

static void
url_list_double_click (GtkTreeView       *treeview,
               GtkTreePath       *path,
               GtkTreeViewColumn *column,
               PublishUIData     *ui)
{
    url_edit_clicked (NULL, ui);
}

static void
url_remove_clicked (GtkButton *button, PublishUIData *ui)
{
    EPublishUri *url = NULL;
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkTreeIter iter;
    GtkWidget *confirm;
    gint response;

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (ui->treeview));
    if (!gtk_tree_selection_get_selected (selection, &model, &iter))
        return;

    gtk_tree_model_get (model, &iter, URL_LIST_URL_COLUMN, &url, -1);

    confirm = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
                              GTK_MESSAGE_QUESTION, GTK_BUTTONS_NONE,
                      _("Are you sure you want to remove this URL?"));
    gtk_dialog_add_button (GTK_DIALOG (confirm), GTK_STOCK_CANCEL, GTK_RESPONSE_NO);
    gtk_dialog_add_button (GTK_DIALOG (confirm), GTK_STOCK_REMOVE, GTK_RESPONSE_YES);
    gtk_dialog_set_default_response (GTK_DIALOG (confirm), GTK_RESPONSE_CANCEL);

    response = gtk_dialog_run (GTK_DIALOG (confirm));
    gtk_widget_destroy (confirm);

    if (response == GTK_RESPONSE_YES) {
        int len;
        guint id;
        gtk_list_store_remove (GTK_LIST_STORE (model), &iter);

        len = gtk_tree_model_iter_n_children (model, NULL);
        if (len > 0) {
            gtk_tree_selection_select_iter (selection, &iter);
        } else {
            gtk_widget_set_sensitive (ui->url_edit, FALSE);
            gtk_widget_set_sensitive (ui->url_remove, FALSE);
            gtk_widget_set_sensitive (ui->url_enable, FALSE);
        }

        publish_uris = g_slist_remove (publish_uris, url);
        id = GPOINTER_TO_UINT (g_hash_table_lookup (uri_timeouts, url));
        if (id)
            g_source_remove (id);

        g_free (url);
        url_list_changed (ui);
    }
}

static void
url_enable_clicked (GtkButton *button, PublishUIData *ui)
{
    EPublishUri *url = NULL;
    GtkTreeSelection *selection;
    GtkTreeModel *model;
    GtkTreeIter iter;

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (ui->treeview));
    if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
        gtk_tree_model_get (model, &iter, URL_LIST_URL_COLUMN, &url, -1);
        url->enabled = !url->enabled;

        if(url->enabled)
            gtk_widget_set_sensitive (ui->url_enable, FALSE);
        else
            gtk_widget_set_sensitive (ui->url_enable, TRUE);

        gtk_list_store_set (GTK_LIST_STORE (model), &iter, URL_LIST_ENABLED_COLUMN, url->enabled, -1);
        gtk_tree_selection_select_iter (selection, &iter);
        url_list_changed (ui);
    }
}

void
online_state_changed (EPlugin *ep, ESEventTargetState *target)
{
    online = target->state;
    if (online)
        while (queued_publishes)
            publish (queued_publishes->data);
}

GtkWidget *
publish_calendar_locations (EPlugin *epl, EConfigHookItemFactoryData *data)
{
    GladeXML *xml;
    GtkCellRenderer *renderer;
    GtkTreeSelection *selection;
    GtkWidget *toplevel;
    PublishUIData *ui = g_new0 (PublishUIData, 1);
    GSList *l;
    GtkTreeIter iter;
    GConfClient *client;
    char *gladefile;

    gladefile = g_build_filename (EVOLUTION_PLUGINDIR,
                      "publish-calendar.glade",
                      NULL);
    xml = glade_xml_new (gladefile, "toplevel", NULL);
    g_free (gladefile);

    ui->treeview = glade_xml_get_widget (xml, "url list");
    if (store == NULL)
        store = gtk_list_store_new (URL_LIST_N_COLUMNS, G_TYPE_BOOLEAN, G_TYPE_STRING, G_TYPE_POINTER);
    else 
        gtk_list_store_clear (store);

    gtk_tree_view_set_model (GTK_TREE_VIEW (ui->treeview), GTK_TREE_MODEL (store));

    renderer = gtk_cell_renderer_toggle_new ();
    g_object_set (G_OBJECT (renderer), "activatable", TRUE, NULL);
    gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (ui->treeview), -1, _("Enabled"),
                                         renderer, "active", URL_LIST_ENABLED_COLUMN, NULL);
    g_signal_connect (G_OBJECT (renderer), "toggled", G_CALLBACK (url_list_enable_toggled), ui);
    renderer = gtk_cell_renderer_text_new ();
    gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (ui->treeview), -1, _("Location"),
                                         renderer, "text", URL_LIST_LOCATION_COLUMN, NULL);
    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (ui->treeview));
    gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);
    g_signal_connect (G_OBJECT (selection), "changed", G_CALLBACK (selection_changed), ui);
    gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (ui->treeview), TRUE);
    g_signal_connect (G_OBJECT (ui->treeview), "row-activated", G_CALLBACK (url_list_double_click), ui);

    ui->url_add = glade_xml_get_widget (xml, "url add");
    ui->url_edit = glade_xml_get_widget (xml, "url edit");
    ui->url_remove = glade_xml_get_widget (xml, "url remove");
    ui->url_enable = glade_xml_get_widget (xml, "url enable");
    g_signal_connect (G_OBJECT (ui->url_add), "clicked", G_CALLBACK (url_add_clicked), ui);
    g_signal_connect (G_OBJECT (ui->url_edit), "clicked", G_CALLBACK (url_edit_clicked), ui);
    g_signal_connect (G_OBJECT (ui->url_remove), "clicked", G_CALLBACK (url_remove_clicked), ui);
    g_signal_connect (G_OBJECT (ui->url_enable), "clicked", G_CALLBACK (url_enable_clicked), ui);
    gtk_widget_set_sensitive (GTK_WIDGET (ui->url_edit), FALSE);
    gtk_widget_set_sensitive (GTK_WIDGET (ui->url_remove), FALSE);
    gtk_widget_set_sensitive (GTK_WIDGET (ui->url_enable), FALSE);

    client = gconf_client_get_default ();
    l = publish_uris;
    while (l) {
        EPublishUri *url = (EPublishUri *) l->data;

        gtk_list_store_append (store, &iter);
        gtk_list_store_set (store, &iter,
                    URL_LIST_ENABLED_COLUMN, url->enabled,
                    URL_LIST_LOCATION_COLUMN, url->location,
                    URL_LIST_URL_COLUMN, url, -1);

        l = g_slist_next (l);
    }
    if (gtk_tree_model_get_iter_first (GTK_TREE_MODEL (store), &iter))
        gtk_tree_selection_select_iter (selection, &iter);

    toplevel = glade_xml_get_widget (xml, "toplevel");
    gtk_widget_show_all (toplevel);
    gtk_box_pack_start (GTK_BOX (data->parent), toplevel, FALSE, TRUE, 0);

    g_object_unref (xml);

    return toplevel;
}

static gpointer 
publish_urls (gpointer data)
{
    GSList *l;

    for (l = publish_uris; l; l = g_slist_next (l)) {
        EPublishUri *uri = l->data;
        publish (uri);
    }

    return GINT_TO_POINTER (0);
}

void
action_publish (EPlugin *ep, ECalMenuTargetSelect *t)
{
    GThread *thread = NULL;
    GError *error = NULL;
    
    thread = g_thread_create ((GThreadFunc) publish_urls, NULL, FALSE, &error);
    if (!thread) {
        g_warning (G_STRLOC ": %s", error->message);
        g_error_free (error);
    }

}

static void
publish_uris_set_timeout (GSList *uris)
{
    GSList *l;

    uri_timeouts = g_hash_table_new (g_direct_hash, g_direct_equal);
    l = uris;

    while (l) {
        gchar *xml = l->data;

        EPublishUri *uri = e_publish_uri_from_xml (xml);

        if (!uri->location) {
            g_free (uri);
            continue;
        }

        publish_uris = g_slist_prepend (publish_uris, uri);

        /* Add a timeout based on the last publish time */
        add_offset_timeout (uri);

        l = g_slist_next (l);
    }
    g_slist_foreach (uris, (GFunc) g_free, NULL);
    g_slist_free (uris);
}

int
e_plugin_lib_enable (EPlugin *ep, int enable)
{
    GSList *uris;
    GConfClient *client;

    if (enable) {
        GThread *thread = NULL;
        GError *error = NULL;


        client = gconf_client_get_default ();
        uris = gconf_client_get_list (client, "/apps/evolution/calendar/publish/uris", GCONF_VALUE_STRING, NULL);
        thread = g_thread_create ((GThreadFunc) publish_uris_set_timeout, uris, FALSE, &error);
        if (!thread) {
            g_warning ("Could create thread to set timeout for publishing uris : %s", error->message);
            g_error_free (error);
        }
        g_object_unref (client);
    }

    return 0;
}