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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
 *
 * Copyright (C) 2000 Helix Code, Inc.
 *
 * Authors: Michael Zucchi <notzed@helixcode.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 <config.h>

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

#include "camel-mh-store.h"
#include "camel-mh-folder.h"
#include "camel-exception.h"
#include "camel-url.h"

static CamelLocalStoreClass *parent_class = NULL;

/* Returns the class for a CamelMhStore */
#define CMHS_CLASS(so) CAMEL_MH_STORE_CLASS (CAMEL_OBJECT_GET_CLASS(so))
#define CF_CLASS(so) CAMEL_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
#define CMHF_CLASS(so) CAMEL_MH_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))

static CamelFolder *get_folder(CamelStore * store, const char *folder_name, guint32 flags, CamelException * ex);
static void delete_folder(CamelStore * store, const char *folder_name, CamelException * ex);

static void camel_mh_store_class_init(CamelObjectClass * camel_mh_store_class)
{
    CamelStoreClass *camel_store_class = CAMEL_STORE_CLASS(camel_mh_store_class);
    /*CamelServiceClass *camel_service_class = CAMEL_SERVICE_CLASS(camel_mh_store_class);*/

    parent_class = (CamelLocalStoreClass *)camel_type_get_global_classfuncs(camel_local_store_get_type());

    /* virtual method overload, use defaults for most */
    camel_store_class->get_folder = get_folder;
    camel_store_class->delete_folder = delete_folder;
}

static void camel_mh_store_init(CamelObject * object)
{
    CamelStore *store = CAMEL_STORE(object);

    /* mh names are filenames, so they are case-sensitive. */
    store->folders = g_hash_table_new(g_str_hash, g_str_equal);
}

CamelType camel_mh_store_get_type(void)
{
    static CamelType camel_mh_store_type = CAMEL_INVALID_TYPE;

    if (camel_mh_store_type == CAMEL_INVALID_TYPE) {
        camel_mh_store_type = camel_type_register(CAMEL_LOCAL_STORE_TYPE, "CamelMhStore",
                              sizeof(CamelMhStore),
                              sizeof(CamelMhStoreClass),
                              (CamelObjectClassInitFunc) camel_mh_store_class_init,
                              NULL,
                              (CamelObjectInitFunc) camel_mh_store_init,
                              NULL);
    }

    return camel_mh_store_type;
}

static CamelFolder *get_folder(CamelStore * store, const char *folder_name, guint32 flags, CamelException * ex)
{
    char *name;
    struct stat st;

    (void) ((CamelStoreClass *)parent_class)->get_folder(store, folder_name, flags, ex);
    if (camel_exception_is_set(ex))
        return NULL;

    name = g_strdup_printf("%s%s", CAMEL_SERVICE(store)->url->path, folder_name);

    if (stat(name, &st) == -1) {
        if (errno != ENOENT) {
            camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
                         _("Could not open folder `%s':\n%s"),
                         folder_name, g_strerror(errno));
            g_free (name);
            return NULL;
        }
        if ((flags & CAMEL_STORE_FOLDER_CREATE) == 0) {
            camel_exception_setv(ex, CAMEL_EXCEPTION_STORE_NO_FOLDER,
                         _("Folder `%s' does not exist."), folder_name);
            g_free (name);
            return NULL;
        }
        if (mkdir(name, 0700) != 0) {
            camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
                         _("Could not create folder `%s':\n%s"),
                         folder_name, g_strerror(errno));
            g_free (name);
            return NULL;
        }
    } else if (!S_ISDIR(st.st_mode)) {
        camel_exception_setv(ex, CAMEL_EXCEPTION_STORE_NO_FOLDER,
                     _("`%s' is not a directory."), name);
        g_free (name);
        return NULL;
    }
    g_free(name);

    return camel_mh_folder_new(store, folder_name, flags, ex);
}

static void delete_folder(CamelStore * store, const char *folder_name, CamelException * ex)
{
    char *name;

    /* remove folder directory - will fail if not empty */
    name = g_strdup_printf("%s%s", CAMEL_SERVICE(store)->url->path, folder_name);
    if (rmdir(name) == -1) {
        camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
                     _("Could not delete folder `%s': %s"),
                     folder_name, strerror(errno));
        g_free(name);
        return;
    }
    g_free(name);

    /* and remove metadata */
    ((CamelStoreClass *)parent_class)->delete_folder(store, folder_name, ex);
}