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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camel-imap-search.c: IMAP folder search */

/*
 *  Authors:
 *    Dan Winship <danw@helixcode.com>
 *
 *  Copyright 2000 Helix Code, Inc. (www.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 Street #330, Boston, MA 02111-1307, USA.
 *
 */


#include <config.h>

#include <string.h>

#include "camel-imap-command.h"
#include "camel-imap-folder.h"
#include "camel-imap-store.h"
#include "camel-imap-search.h"
#include "camel-imap-private.h"

static ESExpResult *
imap_body_contains (struct _ESExp *f, int argc, struct _ESExpResult **argv,
            CamelFolderSearch *s);

static void
camel_imap_search_class_init (CamelImapSearchClass *camel_imap_search_class)
{
    /* virtual method overload */
    CamelFolderSearchClass *camel_folder_search_class =
        CAMEL_FOLDER_SEARCH_CLASS (camel_imap_search_class);
    
    /* virtual method overload */
    camel_folder_search_class->body_contains = imap_body_contains;
}

CamelType
camel_imap_search_get_type (void)
{
    static CamelType camel_imap_search_type = CAMEL_INVALID_TYPE;
    
    if (camel_imap_search_type == CAMEL_INVALID_TYPE) {
        camel_imap_search_type = camel_type_register (
            CAMEL_FOLDER_SEARCH_TYPE, "CamelImapSearch",
            sizeof (CamelImapSearch),
            sizeof (CamelImapSearchClass),
            (CamelObjectClassInitFunc) camel_imap_search_class_init,
            NULL, NULL, NULL);
    }

    return camel_imap_search_type;
}

static ESExpResult *
imap_body_contains (struct _ESExp *f, int argc, struct _ESExpResult **argv,
            CamelFolderSearch *s)
{
    CamelImapStore *store = CAMEL_IMAP_STORE (s->folder->parent_store);
    char *value = argv[0]->value.string;
    CamelImapResponse *response;
    char *result, *p, *lasts = NULL, *real_uid;
    const char *uid = "";
    ESExpResult *r;
    CamelMessageInfo *info;
    GHashTable *uid_hash = NULL;

    CAMEL_IMAP_STORE_LOCK(store, command_lock);

    if (s->current) {
        uid = camel_message_info_uid (s->current);
        r = e_sexp_result_new (ESEXP_RES_BOOL);
        r->value.bool = FALSE;
        response = camel_imap_command (store, s->folder, NULL,
                           "UID SEARCH UID %s BODY \"%s\"",
                           uid, value);
    } else {
        r = e_sexp_result_new(ESEXP_RES_ARRAY_PTR);
        r->value.ptrarray = g_ptr_array_new ();
        response = camel_imap_command (store, s->folder, NULL,
                           "UID SEARCH BODY \"%s\"",
                           value);
    }

    CAMEL_IMAP_STORE_UNLOCK(store, command_lock);

    if (!response)
        return r;
    result = camel_imap_response_extract (response, "SEARCH", NULL);
    if (!result)
        return r;

    p = result + sizeof ("* SEARCH");
    for (p = strtok_r (p, " ", &lasts); p; p = strtok_r (NULL, " ", &lasts)) {
        if (s->current) {
            if (!strcmp (uid, p)) {
                r->value.bool = TRUE;
                break;
            }
        } else {
            /* if we need to setup a hash of summary items, this way we get
               access to the summary memory which is locked for the duration of
               the search, and wont vanish on us */
            if (uid_hash == NULL) {
                int i;

                uid_hash = g_hash_table_new(g_str_hash, g_str_equal);
                for (i=0;i<s->summary->len;i++) {
                    info = s->summary->pdata[i];
                    g_hash_table_insert(uid_hash, (char *)camel_message_info_uid(info), info);
                }
            }
            if (g_hash_table_lookup_extended(uid_hash, p, (void *)&real_uid, (void *)&info))
                g_ptr_array_add (r->value.ptrarray, real_uid);
        }
    }

    /* we could probably cache this globally, but its probably not worth it */
    if (uid_hash)
        g_hash_table_destroy(uid_hash);

    return r;
}

/**
 * camel_imap_search_new:
 *
 * Return value: A new CamelImapSearch widget.
 **/
CamelFolderSearch *
camel_imap_search_new (void)
{
    CamelFolderSearch *new = CAMEL_FOLDER_SEARCH (camel_object_new (camel_imap_search_get_type ()));

    camel_folder_search_construct (new);
    return new;
}