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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camel-mbox-store.c : class for an mbox store */

/* 
 *
 * 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"

/* Returns the class for a CamelMhStore */
#define CMHS_CLASS(so) CAMEL_MH_STORE_CLASS (GTK_OBJECT(so)->klass)
#define CF_CLASS(so) CAMEL_FOLDER_CLASS (GTK_OBJECT(so)->klass)
#define CMHF_CLASS(so) CAMEL_MH_FOLDER_CLASS (GTK_OBJECT(so)->klass)

static char *get_name(CamelService * service, gboolean brief);
static CamelFolder *get_folder(CamelStore * store, const char *folder_name, gboolean create, CamelException * ex);
static void delete_folder(CamelStore * store, const char *folder_name, CamelException * ex);
static char *get_folder_name(CamelStore * store, const char *folder_name, CamelException * ex);

static void camel_mh_store_class_init(CamelMhStoreClass * 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);

    /* virtual method overload */
    camel_service_class->get_name = get_name;

    camel_store_class->get_folder = get_folder;
    camel_store_class->delete_folder = delete_folder;
    camel_store_class->get_folder_name = get_folder_name;
}

static void camel_mh_store_init(gpointer object, gpointer klass)
{
    CamelService *service = CAMEL_SERVICE(object);
    CamelStore *store = CAMEL_STORE(object);

    service->url_flags = CAMEL_SERVICE_URL_NEED_PATH;

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

GtkType camel_mh_store_get_type(void)
{
    static GtkType camel_mh_store_type = 0;

    if (!camel_mh_store_type) {
        GtkTypeInfo camel_mh_store_info = {
            "CamelMhStore",
            sizeof(CamelMhStore),
            sizeof(CamelMhStoreClass),
            (GtkClassInitFunc) camel_mh_store_class_init,
            (GtkObjectInitFunc) camel_mh_store_init,
            /* reserved_1 */ NULL,
            /* reserved_2 */ NULL,
            (GtkClassInitFunc) NULL,
        };

        camel_mh_store_type = gtk_type_unique(CAMEL_STORE_TYPE, &camel_mh_store_info);
    }

    return camel_mh_store_type;
}

const gchar *camel_mh_store_get_toplevel_dir(CamelMhStore * store)
{
    CamelURL *url = CAMEL_SERVICE(store)->url;

    g_assert(url != NULL);
    return url->path;
}

static CamelFolder *get_folder(CamelStore * store, const char *folder_name, gboolean create, CamelException * ex)
{
    CamelFolder *new_folder = NULL;
    char *name;
    struct stat st;

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

    if (stat(name, &st) == -1) {
        int fd;

        if (errno != ENOENT) {
            camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
                         "Could not open folder `%s':" "\n%s", folder_name, g_strerror(errno));
            goto done;
        }
        if (!create) {
            camel_exception_setv(ex, CAMEL_EXCEPTION_STORE_NO_FOLDER,
                         "Folder `%s' does not exist.", folder_name);
            goto done;
        }

        if (mkdir (name, 0600) != 0) {
            camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
                         "Could not create folder `%s':" "\n%s", folder_name, g_strerror(errno));
            goto done;
        }
    } else if (!S_ISDIR(st.st_mode)) {
        camel_exception_setv(ex, CAMEL_EXCEPTION_STORE_NO_FOLDER, "`%s' is not a directory.", name);
        goto done;
    }

    new_folder = gtk_type_new(CAMEL_MH_FOLDER_TYPE);

    CF_CLASS(new_folder)->init(new_folder, store, NULL, folder_name, "/", TRUE, ex);
done:
    g_free(name);
    return new_folder;
}

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

    name = g_strdup_printf("%s%s", CAMEL_SERVICE(store)->url->path, folder_name);
    camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
                 "Could not delete folder `%s':\n%s", folder_name, "not implemented");
    g_free(name);
}

static char *get_folder_name(CamelStore * store, const char *folder_name, CamelException * ex)
{
    /* For now, we don't allow hieararchy. FIXME. */
    if (strchr(folder_name + 1, '/')) {
        camel_exception_set(ex, CAMEL_EXCEPTION_STORE_NO_FOLDER, "Mh folders may not be nested.");
        return NULL;
    }

    return *folder_name == '/' ? g_strdup(folder_name) : g_strdup_printf("/%s", folder_name);
}

static char *get_name(CamelService * service, gboolean brief)
{
    if (brief)
        return g_strdup(service->url->path);
    else
        return g_strdup_printf("Local mail file %s", service->url->path);
}