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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-setup.c
 *
 * Copyright (C) 2000, 2001 Ximian, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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.
 *
 */

/* This needs to be a lot better.  */

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

#include "e-setup.h"

#include "e-local-folder.h"
#include "e-shell-config.h"
#include "e-shell-constants.h"

#include <gconf/gconf-client.h>

#include <gtk/gtklabel.h>

#include <gal/widgets/e-gui-utils.h>

#include <libgnome/gnome-i18n.h>
#include <libgnome/gnome-util.h>
#include <libgnomeui/gnome-messagebox.h>

#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <dirent.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>


static GList *
check_dir_recur (const char *evolution_directory,
         const char *current_directory)
{
    DIR *def;
    GList *newfiles = NULL;
    struct dirent *current;

    def = opendir (current_directory);
    if (def == NULL)
        return NULL;

    current = readdir (def);
    while (current != NULL) {
        struct stat buf;
        char *fullname, *fulldefaultname;

        if (current->d_name[0] == '.' &&
            (current->d_name[1] == '\0' ||
             (current->d_name[1] == '.' && current->d_name[2] == '\0'))) {
            current = readdir (def);
            continue;
        }

        /* Hack to not copy the old Executive-Summary dir */
        if (strcmp (current->d_name, "Executive-Summary") == 0) {
            current = readdir (def);
            continue;
        }

        fullname = g_concat_dir_and_file (evolution_directory,
                          current->d_name);
        fulldefaultname = g_concat_dir_and_file (current_directory,
                             current->d_name);

        if (stat (fullname, &buf) == -1) {
            char *name;

            name = g_strdup (fulldefaultname);
            newfiles = g_list_append (newfiles, name);
        } else {
            if (S_ISDIR (buf.st_mode)) {
                newfiles = g_list_concat (newfiles,
                              check_dir_recur (fullname,
                                       fulldefaultname));
            }
        }

        g_free (fulldefaultname);
        g_free (fullname);
        current = readdir (def);
    }

    closedir (def);
    return newfiles;
}

static gboolean
check_evolution_directory (const char *evolution_directory)
{
    GtkWidget *dialog;
    GtkWidget *label1, *label2;
    gboolean retval;
    GList *newfiles, *l;
    char *defaultdir;
    int result;

    defaultdir = g_strdup (EVOLUTION_DATADIR "/evolution/default_user");
    newfiles = g_list_concat (NULL, check_dir_recur (evolution_directory,
                             defaultdir));

    if (newfiles == NULL) {
        retval = TRUE;
        goto out;
    }

    dialog = gnome_dialog_new (_("Evolution installation"),
                   GNOME_STOCK_BUTTON_OK, GNOME_STOCK_BUTTON_CANCEL,
                   NULL);

    label1 = gtk_label_new (_("This new version of Evolution needs to install additional files\ninto your personal Evolution directory"));
    label2 = gtk_label_new (_("Please click \"OK\" to install the files, or \"Cancel\" to exit."));

    gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (dialog)->vbox), label1, TRUE, TRUE, 0);
    gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (dialog)->vbox), label2, TRUE, TRUE, 0);

    gtk_widget_show (label1);
    gtk_widget_show (label2);

    gtk_window_set_policy (GTK_WINDOW (dialog), FALSE, TRUE, FALSE);

    result = gnome_dialog_run_and_close (GNOME_DIALOG (dialog));

    if (result != 0) {
        retval = FALSE;
        goto out;
    }

    retval = TRUE;
    for (l = newfiles; l; l = l->next) {
        char *command;
        char *shortpath;

        shortpath = l->data + strlen (EVOLUTION_DATADIR "/evolution/default_user/");
        command = g_strconcat ("cp -r ",
                       l->data, " ",
                       evolution_directory, "/",
                       shortpath,
                       NULL);

        if (system (command) != 0) {
            retval = FALSE;
        } else {
            retval = (retval && TRUE);
        }

        g_free (command);
    }

    if (retval == FALSE)
        e_notice (NULL, GTK_MESSAGE_ERROR,
              _("Could not update files correctly"));

 out:

    for (l = newfiles; l; l = l->next)
        g_free (l->data);

    g_list_free (newfiles);
    g_free (defaultdir);

    return retval;
}


static gboolean
copy_default_stuff (const char *evolution_directory)
{
    gboolean retval;
    char *command;
    char *old_default_shortcuts_file;

    if (mkdir (evolution_directory, 0700)) {
        e_notice (NULL, GTK_MESSAGE_ERROR,
              _("Cannot create the directory\n%s\nError: %s"),
              evolution_directory,
              g_strerror (errno));
        return FALSE;
    }

    command = g_strconcat ("cp -r ",
                   EVOLUTION_DATADIR,
                   "/evolution/default_user/* ",
                   evolution_directory,
                   NULL);

    if (system (command) != 0) {
        /* FIXME: Give more help.  */
        e_notice (NULL, GTK_MESSAGE_ERROR,
              _("An error occurred in copying files into\n`%s'."), evolution_directory);
        retval = FALSE;
    } else {
        retval = TRUE;
    }

    /* Temporary block of code to keep it from using the older
           shortcuts.xml that exists for current users in
           $GNOME/share/evolution/default_user.  Remove this by 1.0 */
    old_default_shortcuts_file = g_concat_dir_and_file (evolution_directory,
                                "shortcuts.xml");
    unlink (old_default_shortcuts_file);
    g_free (old_default_shortcuts_file);
    
    g_free (command);

    return retval;
}

static void
e_shell_rm_dir (const char *path)
{
    DIR *base;
    struct stat statbuf;
    struct dirent *contents;

    stat (path, &statbuf);
    if (!S_ISDIR (statbuf.st_mode)) {
        /* Not a directory */
        g_message ("Removing: %s", path);
        unlink (path);
        return;
    } else {
        g_message ("Opening: %s", path);
        base = opendir (path);

        if (base == NULL)
            return;

        contents = readdir (base);
        while (contents != NULL) {
            char *fullpath;

            if (strcmp (contents->d_name, ".") == 0|| 
                strcmp (contents->d_name, "..") ==0) {
                contents = readdir (base);
                continue;
            }

            fullpath = g_concat_dir_and_file (path, contents->d_name);
            e_shell_rm_dir (fullpath);
            g_free (fullpath);

            contents = readdir (base);
        }

        closedir (base);
        rmdir (path);
    }
}


/* FIXME: This is a workaround for bonobo-conf breakage.  */
static gboolean
setup_bonobo_conf_private_directory (const char *evolution_directory)
{
    char *name;
    struct stat buf;

    name = g_concat_dir_and_file (evolution_directory, "private");
    if (stat (name, &buf) == -1) {
        if (mkdir (name, 0700) != 0) {
            e_notice (NULL, GTK_MESSAGE_ERROR,
                  _("Evolution could not create directory\n"
                    "%s:\n%s"),
                  name, strerror (errno));
            g_free (name);
            return FALSE;
        }

        g_free (name);
        return TRUE;
    }

    if (S_ISDIR (buf.st_mode) && access (name, R_OK | W_OK | X_OK) == 0) {
        g_free (name);
        return TRUE;
    }

    if (S_ISDIR (buf.st_mode)) {
        e_notice (NULL, GTK_MESSAGE_ERROR,
              _("Directory %s\n"
                "does not have the right permissions. Please make it\n"
                "readable and executable and restart Evolution."),
              name);
    } else {
        e_notice (NULL, GTK_MESSAGE_ERROR,
              _("File %s\n"
                "should be removed to allow Evolution to work correctly.\n"
                "Please remove this file and restart Evolution."),
              name, strerror (errno));
    }

    g_free (name);
    return FALSE;
}


gboolean
e_setup (const char *evolution_directory)
{
    struct stat statinfo;
    char *file;

    if (stat (evolution_directory, &statinfo) != 0) {
        return copy_default_stuff (evolution_directory);
    }

    if (! S_ISDIR (statinfo.st_mode)) {
        e_notice (NULL, GTK_MESSAGE_ERROR,
              _("The file `%s' is not a directory.\n"
                "Please move it in order to allow installation\n"
                "of the Evolution user files."));
        return FALSE;
    }

    /* Make sure this is really our directory, not an Evolution
     * build tree or something like that.
     */
    file = g_strdup_printf ("%s/local/Executive-Summary", evolution_directory);
    if (stat (file, &statinfo) == 0) {
        if (S_ISDIR (statinfo.st_mode)) {
            GtkWidget *dialog;

            dialog = gnome_message_box_new (_("Evolution has detected an old\n"
                              "Executive-Summary directory.\n"
                              "This needs to be removed before\n"
                              "Evolution will run.\n"
                              "Do you want me to remove this directory?"),
                            GNOME_MESSAGE_BOX_INFO,
                            GNOME_STOCK_BUTTON_YES,
                            GNOME_STOCK_BUTTON_NO,
                            NULL);
            switch (gnome_dialog_run_and_close (GNOME_DIALOG (dialog))) {
            case 0:
                e_shell_rm_dir (file);
                break;

            default:
                return FALSE;
            }
        }
    }

    g_free (file);

    file = g_strdup_printf ("%s/searches.xml", evolution_directory);
    if (stat (file, &statinfo) != 0) {
        e_notice (NULL, GTK_MESSAGE_ERROR,
              _("The directory `%s' exists but is not the\n"
                "Evolution directory.  Please move it in order\n"
                "to allow installation of the Evolution user "
                "files."), evolution_directory);
        g_free (file);
        return FALSE;
    }
    g_free (file);

    /* If the user has an old-style config file, replace it with
     * the new-style config directory. FIXME: This should be
     * temporary.
     */
    file = g_strdup_printf ("%s/config", evolution_directory);
    if (stat (file, &statinfo) == 0 && ! S_ISDIR (statinfo.st_mode)) {
        char *old = g_strdup_printf ("%s.old", file);

        rename (file, old);
        mkdir (file, 0700);
        g_free (old);
    }
    g_free (file);

    /* If the user has an old style trash folder, remove it so it gets
     * replaced by the new vfolder-based trash folder.  FIXME: This should
     * go away at some point.  */
    file = g_strdup_printf ("%s/local/Trash", evolution_directory);
    if (stat (file, &statinfo) == 0 && S_ISDIR (statinfo.st_mode)) {
        EFolder *local_folder;

        local_folder = e_local_folder_new_from_path (file);
        if (local_folder != NULL
            && strcmp (e_folder_get_type_string (local_folder), "mail") == 0) {
            char *old = g_strdup_printf ("%s.old", file);

            rename (file, old);
            g_free (old);
        }

        if (local_folder != NULL)
            g_object_unref (local_folder);
    }
    g_free (file);

    if (! setup_bonobo_conf_private_directory (evolution_directory))
        return FALSE;

    /* User has evolution directory...
       Check if it is up to date. */
    return check_evolution_directory (evolution_directory);
}


void
e_setup_check_config (const char *evolution_directory)
{
    GConfClient *client;
    char *tmp;
    char *uri;

    client = gconf_client_get_default ();

    tmp = gconf_client_get_string (client, "/apps/evolution/shell/default_folders/mail_path", NULL);
    if (tmp != NULL && *tmp != 0) {
        g_object_unref (client);
        return;
    }

    gconf_client_set_string (client, "/apps/evolution/shell/default_folders/mail_path", E_LOCAL_INBOX_URI, NULL);
    uri = g_strconcat ("file://", evolution_directory, "/local", strrchr (E_LOCAL_INBOX_URI, '/'), NULL);
    gconf_client_set_string (client, "/apps/evolution/shell/default_folders/mail_uri", uri, NULL);
    g_free (uri);

    gconf_client_set_string (client, "/apps/evolution/shell/default_folders/contacts_path", E_LOCAL_CONTACTS_URI, NULL);
    uri = g_strconcat ("file://", evolution_directory, "/local", strrchr (E_LOCAL_CONTACTS_URI, '/'), NULL);
    gconf_client_set_string (client, "/apps/evolution/shell/default_folders/contacts_uri", uri, NULL);
    g_free (uri);

    gconf_client_set_string (client, "/apps/evolution/shell/default_folders/tasks_path", E_LOCAL_TASKS_URI, NULL);
    uri = g_strconcat ("file://", evolution_directory, "/local", strrchr (E_LOCAL_TASKS_URI, '/'), NULL);
    gconf_client_set_string (client, "/apps/evolution/shell/default_folders/tasks_uri", uri, NULL);
    g_free (uri);

    gconf_client_set_string (client, "/apps/evolution/shell/default_folders/calendar_path", E_LOCAL_CALENDAR_URI, NULL);
    uri = g_strconcat ("file://", evolution_directory, "/local", strrchr (E_LOCAL_CALENDAR_URI, '/'), NULL);
    gconf_client_set_string (client, "/apps/evolution/shell/default_folders/calendar_uri", uri, NULL);
    g_free (uri);

    g_object_unref (client);
}