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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* mail-ops.c: callbacks for the mail toolbar/menus */

/* 
 * Authors: Dan Winship <danw@helixcode.com>
 *          Jeffrey Stedfast <fejj@helixcode.com>
 *          Peter Williams <peterw@helixcode.com>
 *          Michael Zucchi <notzed@ximian.com>
 *
 * Copyright 2000,2001 Ximian, Inc. (http://www.ximian.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
 */

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

/* #include <ctype.h> */
#include <errno.h>
#include <gal/util/e-util.h>
#include <gal/widgets/e-unicode.h>
#include <camel/camel-mime-filter-from.h>
#include <camel/camel-operation.h>
#include "mail.h"
#include "mail-tools.h"
#include "mail-ops.h"
#include "mail-vfolder.h"
#include "composer/e-msg-composer.h"
#include "folder-browser.h"
#include "e-util/e-html-utils.h"

#include "filter/filter-filter.h"

#include "mail-mt.h"

#define d(x) x

FilterContext *
mail_load_filter_context(void)
{
    char *user;
    char *system;
    FilterContext *fc;
    
    user = g_strdup_printf ("%s/filters.xml", evolution_dir);
    system = EVOLUTION_DATADIR "/evolution/filtertypes.xml";
    fc = filter_context_new ();
    rule_context_load ((RuleContext *)fc, system, user);
    g_free (user);
    
    return fc;
}

static void
setup_filter_driver(CamelFilterDriver *driver, FilterContext *fc, const char *source)
{
    GString *fsearch, *faction;
    FilterFilter *rule = NULL;

    if (TRUE /* perform_logging */) {
        char *filename = g_strdup_printf("%s/evolution-filter-log", evolution_dir);
        /* FIXME: This is a nasty little thing to stop leaking file handles.
           Needs to be setup elsewhere. */
        static FILE *logfile = NULL;

        if (logfile == NULL)
            logfile = fopen(filename, "a+");
        g_free(filename);
        if (logfile)
            camel_filter_driver_set_logfile(driver, logfile);
    }

    fsearch = g_string_new ("");
    faction = g_string_new ("");
    
    while ((rule = (FilterFilter *)rule_context_next_rule((RuleContext *)fc, (FilterRule *)rule, source))) {
        g_string_truncate (fsearch, 0);
        g_string_truncate (faction, 0);
        
        filter_rule_build_code ((FilterRule *)rule, fsearch);
        filter_filter_build_action (rule, faction);

        camel_filter_driver_add_rule(driver, ((FilterRule *)rule)->name, fsearch->str, faction->str);
    }
    
    g_string_free (fsearch, TRUE);
    g_string_free (faction, TRUE);
}

static CamelFolder *
filter_get_folder(CamelFilterDriver *d, const char *uri, void *data, CamelException *ex)
{
    CamelFolder *folder;

    folder = mail_tool_uri_to_folder(uri, ex);

    return folder;
}

/* used for both just filtering a folder + uid's, and for filtering a whole folder */
/* used both for fetching mail, and for filtering mail */
struct _filter_mail_msg {
    struct _mail_msg msg;

    CamelFolder *source_folder; /* where they come from */
    GPtrArray *source_uids; /* uids to copy, or NULL == copy all */
    CamelOperation *cancel;
    CamelFilterDriver *driver;
    int delete;     /* delete messages after filtering them? */
    CamelFolder *destination; /* default destination for any messages, NULL for none */
};

/* since fetching also filters, we subclass the data here */
struct _fetch_mail_msg {
    struct _filter_mail_msg fmsg;

    CamelOperation *cancel; /* we have our own cancellation struct, the other should be empty */
    int keep;       /* keep on server? */

    char *source_uri;

    void (*done)(char *source, void *data);
    void *data;
};

/* filter a folder, or a subset thereof, uses source_folder/source_uids */
/* this is shared with fetch_mail */
static void
filter_folder_filter(struct _mail_msg *mm)
{
    struct _filter_mail_msg *m = (struct _filter_mail_msg *)mm;
    CamelFolder *folder;
    GPtrArray *uids, *folder_uids = NULL;

    if (m->cancel)
        camel_operation_register(m->cancel);

    folder = m->source_folder;

    if (folder == NULL || camel_folder_get_message_count (folder) == 0) {
        if (m->cancel)
            camel_operation_unregister(m->cancel);
        return;
    }

    if (m->destination) {
        camel_folder_freeze(m->destination);
        camel_filter_driver_set_default_folder(m->driver, m->destination);
    }

    camel_folder_freeze(folder);

    if (m->source_uids)
        uids = m->source_uids;
    else
        folder_uids = uids = camel_folder_get_uids (folder);

    camel_filter_driver_filter_folder(m->driver, folder, uids, m->delete, &mm->ex);

    if (folder_uids)
        camel_folder_free_uids(folder, folder_uids);

    /* sync and expunge */
    camel_folder_sync (folder, TRUE, &mm->ex);
    camel_folder_thaw(folder);

    if (m->destination)
        camel_folder_thaw(m->destination);

    if (m->cancel)
        camel_operation_unregister(m->cancel);
}

static void
filter_folder_filtered(struct _mail_msg *mm)
{
}

static void
filter_folder_free(struct _mail_msg *mm)
{
    struct _filter_mail_msg *m = (struct _filter_mail_msg *)mm;
    int i;

    if (m->source_folder)
        camel_object_unref((CamelObject *)m->source_folder);
    if (m->source_uids) {
        for (i=0;i<m->source_uids->len;i++)
            g_free(m->source_uids->pdata[i]);
        g_ptr_array_free(m->source_uids, TRUE);
    }
    if (m->cancel)
        camel_operation_unref(m->cancel);
    if (m->destination)
        camel_object_unref((CamelObject *)m->destination);
    if (m->driver)
        camel_object_unref((CamelObject *)m->driver);
}

static struct _mail_msg_op filter_folder_op = {
    NULL,           /* we do our own progress reporting? */
    filter_folder_filter,
    filter_folder_filtered,
    filter_folder_free,
};

void
mail_filter_folder(CamelFolder *source_folder, GPtrArray *uids,
           FilterContext *fc, const char *type,
           CamelOperation *cancel)
{
    struct _filter_mail_msg *m;

    m = mail_msg_new(&filter_folder_op, NULL, sizeof(*m));
    m->source_folder = source_folder;
    camel_object_ref((CamelObject *)source_folder);
    m->source_uids = uids;
    m->delete = FALSE;
    if (cancel) {
        m->cancel = cancel;
        camel_operation_ref(cancel);
    }

    m->driver = camel_filter_driver_new(filter_get_folder, NULL);
    setup_filter_driver(m->driver, fc, type);

    e_thread_put(mail_thread_new, (EMsg *)m);
}

/* convenience function for it */
void mail_filter_on_demand(CamelFolder *folder, GPtrArray *uids)
{
    FilterContext *fc;

    fc = mail_load_filter_context();
    mail_filter_folder(folder, uids, fc, FILTER_SOURCE_INCOMING, NULL);
    gtk_object_unref((GtkObject *)fc);
}

/* ********************************************************************** */

/* Temporary workaround for various issues. Gone before 0.11 */
static char *
uid_cachename_hack (CamelStore *store)
{
    CamelURL *url = CAMEL_SERVICE (store)->url;
    char *encoded_url, *filename;

    encoded_url = g_strdup_printf ("pop://%s%s%s@%s/", url->user,
                       url->authmech ? ";auth=" : "",
                       url->authmech ? url->authmech : "",
                       url->host);
    e_filename_make_safe (encoded_url);

    filename = g_strdup_printf ("%s/config/cache-%s", evolution_dir, encoded_url);
    g_free (encoded_url);

    return filename;
}

static void
fetch_mail_fetch(struct _mail_msg *mm)
{
    struct _fetch_mail_msg *m = (struct _fetch_mail_msg *)mm;
    struct _filter_mail_msg *fm = (struct _filter_mail_msg *)mm;
    int i;

    if (m->cancel)
        camel_operation_register(m->cancel);

    if ( (fm->destination = mail_tool_get_local_inbox(&mm->ex)) == NULL) {
        if (m->cancel)
            camel_operation_unregister(m->cancel);
        return;
    }

    /* FIXME: this should support keep_on_server too, which would then perform a spool
       access thingy, right?  problem is matching raw messages to uid's etc. */
    if (!strncmp (m->source_uri, "mbox:", 5)) {
        char *path = mail_tool_do_movemail (m->source_uri, &mm->ex);
        
        if (path && !camel_exception_is_set (&mm->ex)) {
            camel_folder_freeze(fm->destination);
            camel_filter_driver_set_default_folder(fm->driver, fm->destination);
            camel_filter_driver_filter_mbox(fm->driver, path, &mm->ex);
            camel_folder_thaw(fm->destination);
            
            if (!camel_exception_is_set (&mm->ex))
                unlink (path);
        }
        g_free (path);
    } else {
        CamelFolder *folder = fm->source_folder = mail_tool_get_inbox(m->source_uri, &mm->ex);
        
        if (folder) {
            /* this handles 'keep on server' stuff, if we have any new uid's to copy
               across, we need to copy them to a new array 'cause of the way fetch_mail_free works */
            CamelUIDCache *cache = NULL;
            char *cachename;
            
            cachename = uid_cachename_hack (folder->parent_store);
            cache = camel_uid_cache_new (cachename);
            g_free (cachename);
            
            if (cache) {
                GPtrArray *folder_uids, *cache_uids, *uids;
                
                folder_uids = camel_folder_get_uids (folder);
                cache_uids = camel_uid_cache_get_new_uids (cache, folder_uids);
                if (cache_uids) {
                    /* need to copy this, sigh */
                    fm->source_uids = uids = g_ptr_array_new ();
                    g_ptr_array_set_size (uids, cache_uids->len);
                    for (i = 0; i < cache_uids->len; i++)
                        uids->pdata[i] = g_strdup (cache_uids->pdata[i]);
                    camel_uid_cache_free_uids (cache_uids);
                    
                    filter_folder_filter (mm);
                    
                    /* if we are not to delete the messages, save the UID cache */
                    if (!fm->delete && !camel_exception_is_set (&mm->ex))
                        camel_uid_cache_save (cache);
                }
                camel_uid_cache_destroy (cache);
                camel_folder_free_uids (folder, folder_uids);
            } else {
                filter_folder_filter (mm);
            }
        }
    }

    if (m->cancel)
        camel_operation_unregister(m->cancel);

    /* we unref this here as it may have more work to do (syncing
       folders and whatnot) before we are really done */
    /* should this be cancellable too? (i.e. above unregister above) */
    camel_object_unref((CamelObject *)m->fmsg.driver);
    m->fmsg.driver = NULL;
}

static void
fetch_mail_fetched(struct _mail_msg *mm)
{
    struct _fetch_mail_msg *m = (struct _fetch_mail_msg *)mm;

    if (m->done)
        m->done(m->source_uri, m->data);
}

static void
fetch_mail_free(struct _mail_msg *mm)
{
    struct _fetch_mail_msg *m = (struct _fetch_mail_msg *)mm;

    g_free(m->source_uri);
    if (m->cancel)
        camel_operation_unref(m->cancel);

    filter_folder_free(mm);
}

static struct _mail_msg_op fetch_mail_op = {
    NULL,           /* we do our own progress reporting */
    fetch_mail_fetch,
    fetch_mail_fetched,
    fetch_mail_free,
};

/* ouch, a 'do everything' interface ... */
void mail_fetch_mail(const char *source, int keep,
             FilterContext *fc, const char *type,
             CamelOperation *cancel,
             CamelFilterGetFolderFunc get_folder, void *get_data,
             CamelFilterStatusFunc *status, void *status_data,
             void (*done)(char *source, void *data), void *data)
{
    struct _fetch_mail_msg *m;
    struct _filter_mail_msg *fm;

    m = mail_msg_new(&fetch_mail_op, NULL, sizeof(*m));
    fm = (struct _filter_mail_msg *)m;
    m->source_uri = g_strdup(source);
    fm->delete = !keep;
    if (cancel) {
        m->cancel = cancel;
        camel_operation_ref(cancel);
    }
    m->done = done;
    m->data = data;

    fm->driver = camel_filter_driver_new(get_folder, get_data);
    setup_filter_driver(fm->driver, fc, type);
    if (status)
        camel_filter_driver_set_status_func(fm->driver, status, status_data);

    e_thread_put(mail_thread_new, (EMsg *)m);
}


/* updating of imap folders etc */
struct _update_info {
    EvolutionStorage *storage;

    void (*done)(CamelStore *, void *data);
    void *data;
};

static void do_update_subfolders_rec(CamelStore *store, CamelFolderInfo *info, EvolutionStorage *storage, const char *prefix)
{
    char *path, *name;
    
    path = g_strdup_printf("%s/%s", prefix, info->name);
    if (info->unread_message_count > 0)
        name = g_strdup_printf("%s (%d)", info->name, info->unread_message_count);
    else
        name = g_strdup(info->name);
    
    evolution_storage_update_folder(storage, path, name, info->unread_message_count > 0);
    g_free(name);
    if (info->child)
        do_update_subfolders_rec(store, info->child, storage, path);
    if (info->sibling)
        do_update_subfolders_rec(store, info->sibling, storage, prefix);
    g_free(path);
}

static void do_update_subfolders(CamelStore *store, CamelFolderInfo *info, void *data)
{
    struct _update_info *uinfo = data;
    
    if (uinfo) {
        do_update_subfolders_rec(store, info, uinfo->storage, "");
    }

    if (uinfo->done)
        uinfo->done(store, uinfo->data);

    gtk_object_unref((GtkObject *)uinfo->storage);
    g_free(uinfo);
}

/* this interface is a little icky */
int mail_update_subfolders(CamelStore *store, EvolutionStorage *storage,
               void (*done)(CamelStore *, void *data), void *data)
{
    struct _update_info *info;

    /* FIXME: This wont actually work entirely right, as a failure may lose this data */
    /* however, this isn't a big problem ... */
    info = g_malloc0(sizeof(*info));
    info->storage = storage;
    gtk_object_ref((GtkObject *)storage);
    info->done = done;
    info->data = data;

    return mail_get_folderinfo(store, do_update_subfolders, info);
}

/* ********************************************************************** */
/* sending stuff */
/* ** SEND MAIL *********************************************************** */

extern CamelFolder *sent_folder;

/* send 1 message to a specific transport */
static void
mail_send_message(CamelMimeMessage *message, const char *destination, CamelFilterDriver *driver, CamelException *ex)
{
    CamelMessageInfo *info;
    CamelTransport *xport = NULL;
    CamelFolder *folder;
    const char *version, *header;
    char *transport_url = NULL, *sent_folder_uri = NULL;
    
    if (SUB_VERSION[0] == '\0')
        version = "Evolution/" VERSION " (Preview Release)";
    else
        version = "Evolution/" VERSION SUB_VERSION " (Preview Release)";
    camel_medium_add_header (CAMEL_MEDIUM (message), "X-Mailer", version);
    camel_mime_message_set_date (message, CAMEL_MESSAGE_DATE_CURRENT, 0);
    
    /* Remove the X-Evolution and X-Evolution-Source headers so we don't send our flags & other info too ;-) */
    camel_medium_remove_header (CAMEL_MEDIUM (message), "X-Evolution");
    camel_medium_remove_header (CAMEL_MEDIUM (message), "X-Evolution-Source");
    
    /* Get information about the account this was composed by. */
    header = camel_medium_get_header (CAMEL_MEDIUM (message), "X-Evolution-Account");
    if (header) {
        const MailConfigAccount *account;
        
        account = mail_config_get_account_by_name (header);
        camel_medium_remove_header (CAMEL_MEDIUM (message), "X-Evolution-Account");
        if (account) {
            transport_url = g_strdup (account->transport->url);
            camel_medium_remove_header (CAMEL_MEDIUM (message), "X-Evolution-Transport");
            sent_folder_uri = g_strdup (account->sent_folder_uri);
            camel_medium_remove_header (CAMEL_MEDIUM (message), "X-Evolution-Fcc");
        }
    }
    
    if (!transport_url) {
        header = camel_medium_get_header (CAMEL_MEDIUM (message), "X-Evolution-Transport");
        if (header) {
            transport_url = g_strstrip (g_strdup (header));
            camel_medium_remove_header (CAMEL_MEDIUM (message), "X-Evolution-Transport");
        }
    }
    
    if (!sent_folder_uri) {
        header = camel_medium_get_header (CAMEL_MEDIUM (message), "X-Evolution-Fcc");
        if (header) {
            sent_folder_uri = g_strstrip (g_strdup (header));
            camel_medium_remove_header (CAMEL_MEDIUM (message), "X-Evolution-Fcc");
        }
    }
    
    xport = camel_session_get_transport (session, transport_url ? transport_url : destination, ex);
    g_free (transport_url);
    if (!xport) {
        g_free (sent_folder_uri);
        return;
    }
    
    camel_transport_send (xport, (CamelMedium *)message, ex);
    camel_object_unref (CAMEL_OBJECT (xport));
    if (camel_exception_is_set (ex)) {
        g_free (sent_folder_uri);
        return;
    }
    
    /* post-process */
    info = camel_message_info_new ();
    info->flags = CAMEL_MESSAGE_SEEN;
    
    if (driver)
        camel_filter_driver_filter_message (driver, message, info,
                            NULL, NULL, "", ex);
    
    if (sent_folder_uri) {
        folder = mail_tool_uri_to_folder (sent_folder_uri, NULL);
        if (!folder) {
            /* FIXME */
            camel_object_ref (CAMEL_OBJECT (sent_folder));
            folder = sent_folder;
        }
    } else {
        camel_object_ref (CAMEL_OBJECT (sent_folder));
        folder = sent_folder;
    }
    
    if (folder) {
        camel_folder_append_message (folder, message, info, ex);
        camel_object_unref (CAMEL_OBJECT (folder));
    }
    
    camel_message_info_free (info);
}

/* ********************************************************************** */

struct _send_mail_msg {
    struct _mail_msg msg;

    CamelFilterDriver *driver;
    char *destination;
    CamelMimeMessage *message;

    void (*done)(char *uri, CamelMimeMessage *message, gboolean sent, void *data);
    void *data;
};

static char *send_mail_desc(struct _mail_msg *mm, int done)
{
    struct _send_mail_msg *m = (struct _send_mail_msg *)mm;
    char *subject;
    const char *subject_utf8;
    
    subject_utf8 = camel_mime_message_get_subject(m->message);
    
    if (subject_utf8) {
        char *desc;

        subject = e_utf8_to_locale_string (subject_utf8);
        desc = g_strdup_printf (_("Sending \"%s\""), subject);
        g_free (subject);
        return desc;
    } else
        return g_strdup(_("Sending message"));
}

static void send_mail_send(struct _mail_msg *mm)
{
    struct _send_mail_msg *m = (struct _send_mail_msg *)mm;

    camel_operation_register(mm->cancel);
    mail_send_message(m->message, m->destination, m->driver, &mm->ex);
    camel_operation_unregister(mm->cancel);
}

static void send_mail_sent(struct _mail_msg *mm)
{
    struct _send_mail_msg *m = (struct _send_mail_msg *)mm;

    if (m->done)
        m->done(m->destination, m->message, !camel_exception_is_set(&mm->ex), m->data);
}

static void send_mail_free(struct _mail_msg *mm)
{
    struct _send_mail_msg *m = (struct _send_mail_msg *)mm;

    camel_object_unref((CamelObject *)m->message);
    g_free(m->destination);
}

static struct _mail_msg_op send_mail_op = {
    send_mail_desc,
    send_mail_send,
    send_mail_sent,
    send_mail_free,
};

int
mail_send_mail(const char *uri, CamelMimeMessage *message, void (*done) (char *uri, CamelMimeMessage *message, gboolean sent, void *data), void *data)
{
    struct _send_mail_msg *m;
    int id;
    FilterContext *fc;

    m = mail_msg_new(&send_mail_op, NULL, sizeof(*m));
    m->destination = g_strdup(uri);
    m->message = message;
    camel_object_ref((CamelObject *)message);
    m->data = data;
    m->done = done;

    id = m->msg.seq;

    m->driver = camel_filter_driver_new(filter_get_folder, NULL);
    fc = mail_load_filter_context();
    setup_filter_driver(m->driver, fc, FILTER_SOURCE_OUTGOING);
    gtk_object_unref((GtkObject *)fc);

    e_thread_put(mail_thread_new, (EMsg *)m);
    return id;
}

/* ** SEND MAIL QUEUE ***************************************************** */

struct _send_queue_msg {
    struct _mail_msg msg;

    CamelFolder *queue;
    char *destination;

    CamelFilterDriver *driver;
    CamelOperation *cancel;

    /* we use camelfilterstatusfunc, even though its not the filter doing it */
    CamelFilterStatusFunc *status;
    void *status_data;

    void (*done)(char *destination, void *data);
    void *data;
};

static void
report_status(struct _send_queue_msg *m, enum camel_filter_status_t status, int pc, const char *desc, ...)
{
    va_list ap;
    char *str;
    
    if (m->status) {
        va_start(ap, desc);
        str = g_strdup_vprintf(desc, ap);
        m->status(m->driver, status, pc, str, m->status_data);
        g_free(str);
    }
}

static void
send_queue_send(struct _mail_msg *mm)
{
    struct _send_queue_msg *m = (struct _send_queue_msg *)mm;
    extern CamelFolder *sent_folder; /* FIXME */
    GPtrArray *uids;
    int i;
    
    d(printf("sending queue\n"));
    
    uids = camel_folder_get_uids (m->queue);
    if (uids == NULL || uids->len == 0)
        return;

    if (m->cancel)
        camel_operation_register (m->cancel);
    
    for (i = 0; i < uids->len; i++) {
        CamelMimeMessage *message;
        CamelMessageInfo *info;
        int pc = (100 * i) / uids->len;
        
        report_status (m, CAMEL_FILTER_STATUS_START, pc, _("Sending message %d of %d"), i+1, uids->len);
        
        info = camel_folder_get_message_info (m->queue, uids->pdata[i]);
        if (info && info->flags & CAMEL_MESSAGE_DELETED)
            continue;
        
        message = camel_folder_get_message (m->queue, uids->pdata[i], &mm->ex);
        if (camel_exception_is_set (&mm->ex))
            break;
        
        mail_send_message (message, m->destination, m->driver, &mm->ex);
        
        if (camel_exception_is_set (&mm->ex))
            break;
        
        camel_folder_set_message_flags (m->queue, uids->pdata[i], CAMEL_MESSAGE_DELETED, CAMEL_MESSAGE_DELETED);
    }
    
    if (camel_exception_is_set (&mm->ex))
        report_status (m, CAMEL_FILTER_STATUS_END, 100, _("Failed on message %d of %d"), i+1, uids->len);
    else
        report_status (m, CAMEL_FILTER_STATUS_END, 100, _("Complete."));
    
    camel_folder_free_uids (m->queue, uids);
    
    if (!camel_exception_is_set (&mm->ex))
        camel_folder_expunge (m->queue, &mm->ex);
    
    if (sent_folder)
        camel_folder_sync (sent_folder, FALSE, &mm->ex);
    
    if (m->cancel)
        camel_operation_unregister (m->cancel);
}

static void
send_queue_sent(struct _mail_msg *mm)
{
    struct _send_queue_msg *m = (struct _send_queue_msg *)mm;

    if (m->done)
        m->done(m->destination, m->data);
}

static void
send_queue_free(struct _mail_msg *mm)
{
    struct _send_queue_msg *m = (struct _send_queue_msg *)mm;
    
    camel_object_unref((CamelObject *)m->queue);
    g_free(m->destination);
    if (m->cancel)
        camel_operation_unref(m->cancel);
}

static struct _mail_msg_op send_queue_op = {
    NULL,           /* do our own reporting, as with fetch mail */
    send_queue_send,
    send_queue_sent,
    send_queue_free,
};

/* same interface as fetch_mail, just 'cause i'm lazy today (and we need to run it from the same spot?) */
void
mail_send_queue(CamelFolder *queue, const char *destination,
        FilterContext *fc, const char *type,
        CamelOperation *cancel,
        CamelFilterGetFolderFunc get_folder, void *get_data,
        CamelFilterStatusFunc *status, void *status_data,
        void (*done)(char *destination, void *data), void *data)
{
    struct _send_queue_msg *m;

    m = mail_msg_new(&send_queue_op, NULL, sizeof(*m));
    m->queue = queue;
    camel_object_ref((CamelObject *)queue);
    m->destination = g_strdup(destination);
    if (cancel) {
        m->cancel = cancel;
        camel_operation_ref(cancel);
    }
    m->status = status;
    m->status_data = status_data;
    m->done = done;
    m->data = data;

    m->driver = camel_filter_driver_new(get_folder, get_data);
    setup_filter_driver(m->driver, fc, type);

    e_thread_put(mail_thread_new, (EMsg *)m);
}

/* ** APPEND MESSAGE TO FOLDER ******************************************** */

struct _append_msg {
    struct _mail_msg msg;

        CamelFolder *folder;
    CamelMimeMessage *message;
        CamelMessageInfo *info;

    void (*done)(CamelFolder *folder, CamelMimeMessage *msg, CamelMessageInfo *info, int ok, void *data);
    void *data;
};

static char *append_mail_desc(struct _mail_msg *mm, int done)
{
    return g_strdup(_("Saving message to folder"));
}

static void append_mail_append(struct _mail_msg *mm)
{
    struct _append_msg *m = (struct _append_msg *)mm;

    camel_mime_message_set_date(m->message, CAMEL_MESSAGE_DATE_CURRENT, 0);
    camel_folder_append_message(m->folder, m->message, m->info, &mm->ex);
}

static void append_mail_appended(struct _mail_msg *mm)
{
    struct _append_msg *m = (struct _append_msg *)mm;

    if (m->done)
        m->done(m->folder, m->message, m->info, !camel_exception_is_set(&mm->ex), m->data);
}

static void append_mail_free(struct _mail_msg *mm)
{
    struct _append_msg *m = (struct _append_msg *)mm;

    camel_object_unref((CamelObject *)m->message);
    camel_object_unref((CamelObject *)m->folder);
}

static struct _mail_msg_op append_mail_op = {
    append_mail_desc,
    append_mail_append,
    append_mail_appended,
    append_mail_free
};

void
mail_append_mail (CamelFolder *folder,
          CamelMimeMessage *message,
          CamelMessageInfo *info,
          void (*done)(CamelFolder *folder, CamelMimeMessage *msg, CamelMessageInfo *info, int ok, void *data), void *data)
{
    struct _append_msg *m;

    g_return_if_fail (CAMEL_IS_FOLDER (folder));
    g_return_if_fail (CAMEL_IS_MIME_MESSAGE (message));

    m = mail_msg_new(&append_mail_op, NULL, sizeof(*m));
    m->folder = folder;
    camel_object_ref((CamelObject *)folder);
    m->message = message;
    camel_object_ref((CamelObject *)message);
    m->info = info;

    m->done = done;
    m->data = data;

    e_thread_put(mail_thread_new, (EMsg *)m);
}

/* ** TRANSFER MESSAGES **************************************************** */

struct _transfer_msg {
    struct _mail_msg msg;

    CamelFolder *source;
    GPtrArray *uids;
    gboolean delete;
    char *dest_uri;
};

static char *transfer_messages_desc(struct _mail_msg *mm, int done)
{
    struct _transfer_msg *m = (struct _transfer_msg *)mm;

    return g_strdup_printf(m->delete?_("Moving messages to %s"):_("Copying messages to %s"),
                   m->dest_uri);
                   
}

static void transfer_messages_transfer(struct _mail_msg *mm)
{
    struct _transfer_msg *m = (struct _transfer_msg *)mm;
    CamelFolder *dest;
    char *desc;
    void (*func) (CamelFolder *, GPtrArray *, 
              CamelFolder *, 
              CamelException *);

    if (m->delete) {
        func = camel_folder_move_messages_to;
        desc = _("Moving");
    } else {
        func = camel_folder_copy_messages_to;
        desc = _("Copying");
    }

    dest = mail_tool_uri_to_folder (m->dest_uri, &mm->ex);
    if (camel_exception_is_set (&mm->ex))
        return;

    camel_folder_freeze (m->source);
    camel_folder_freeze (dest);
    
    (func) (m->source, m->uids, dest, &mm->ex);
    
    camel_folder_thaw(m->source);
    camel_folder_thaw(dest);
    camel_object_unref((CamelObject *)dest);
}

static void transfer_messages_free(struct _mail_msg *mm)
{
    struct _transfer_msg *m = (struct _transfer_msg *)mm;
    int i;

    camel_object_unref((CamelObject *)m->source);
    g_free(m->dest_uri);
    for (i=0;i<m->uids->len;i++)
        g_free(m->uids->pdata[i]);
    g_ptr_array_free(m->uids, TRUE);

}

static struct _mail_msg_op transfer_messages_op = {
    transfer_messages_desc,
    transfer_messages_transfer,
    NULL,
    transfer_messages_free,
};

void
mail_do_transfer_messages (CamelFolder *source, GPtrArray *uids,
               gboolean delete_from_source,
               gchar *dest_uri)
{
    struct _transfer_msg *m;

    g_return_if_fail (CAMEL_IS_FOLDER (source));
    g_return_if_fail (uids != NULL);
    g_return_if_fail (dest_uri != NULL);

    m = mail_msg_new(&transfer_messages_op, NULL, sizeof(*m));
    m->source = source;
    camel_object_ref((CamelObject *)source);
    m->uids = uids;
    m->delete = delete_from_source;
    m->dest_uri = g_strdup (dest_uri);

    e_thread_put(mail_thread_queued, (EMsg *)m);
}

/* ** SCAN SUBFOLDERS ***************************************************** */

struct _get_folderinfo_msg {
    struct _mail_msg msg;

    CamelStore *store;
    CamelFolderInfo *info;
    void (*done)(CamelStore *store, CamelFolderInfo *info, void *data);
    void *data;
};

static char *get_folderinfo_desc(struct _mail_msg *mm, int done)
{
    struct _get_folderinfo_msg *m = (struct _get_folderinfo_msg *)mm;
    char *ret, *name;

    name = camel_service_get_name((CamelService *)m->store, TRUE);
    ret = g_strdup_printf(_("Scanning folders in \"%s\""), name);
    g_free(name);
    return ret;
}

static void
add_vtrash_info (CamelFolderInfo *info)
{
    CamelFolderInfo *fi, *vtrash;
    CamelURL *url;
    char *uri;
    
    g_return_if_fail (info != NULL);
    
    for (fi = info; fi->sibling; fi = fi->sibling) {
        if (!strcmp (fi->name, _("Trash")))
            break;
    }
    
    /* create our vTrash URL */
    url = camel_url_new (info->url, NULL);
    g_free (url->path);
    url->path = g_strdup_printf ("/%s", _("Trash"));
    uri = camel_url_to_string (url, 0);
    camel_url_free (url);
    
    if (fi->sibling) {
        /* We're going to replace the physical Trash folder with our vTrash folder */
        vtrash = fi;
        g_free (vtrash->full_name);
        g_free (vtrash->name);
        g_free (vtrash->url);
    } else {
        /* There wasn't a Trash folder so create a new folder entry */
        vtrash = g_new0 (CamelFolderInfo, 1);
        vtrash->parent = fi;
        fi->sibling = vtrash;
    }
    
    /* Fill in the new fields */
    vtrash->full_name = g_strdup (_("Trash"));
    vtrash->name = g_strdup (_("Trash"));
    vtrash->url = g_strdup_printf ("vtrash:%s", uri);
    vtrash->unread_message_count = -1;
    g_free (uri);
}

static void get_folderinfo_get(struct _mail_msg *mm)
{
    struct _get_folderinfo_msg *m = (struct _get_folderinfo_msg *)mm;
    guint32 flags = CAMEL_STORE_FOLDER_INFO_RECURSIVE;

    if (camel_store_supports_subscriptions (m->store))
        flags |= CAMEL_STORE_FOLDER_INFO_SUBSCRIBED;

    camel_operation_register(mm->cancel);
    m->info = camel_store_get_folder_info (m->store, NULL, flags, &mm->ex);
    if (m->info && m->info->url)
        add_vtrash_info (m->info);
    camel_operation_unregister(mm->cancel);
}

static void get_folderinfo_got(struct _mail_msg *mm)
{
    struct _get_folderinfo_msg *m = (struct _get_folderinfo_msg *)mm;

    if (m->done)
        m->done(m->store, m->info, m->data);
}

static void get_folderinfo_free(struct _mail_msg *mm)
{
    struct _get_folderinfo_msg *m = (struct _get_folderinfo_msg *)mm;

    if (m->info)
        camel_store_free_folder_info(m->store, m->info);
    camel_object_unref((CamelObject *)m->store);
}

static struct _mail_msg_op get_folderinfo_op = {
    get_folderinfo_desc,
    get_folderinfo_get,
    get_folderinfo_got,
    get_folderinfo_free,
};

int mail_get_folderinfo(CamelStore *store, void (*done)(CamelStore *store, CamelFolderInfo *info, void *data), void *data)
{
    struct _get_folderinfo_msg *m;
    int id;

    m = mail_msg_new(&get_folderinfo_op, NULL, sizeof(*m));
    m->store = store;
    camel_object_ref((CamelObject *)store);
    m->done = done;
    m->data = data;
    id = m->msg.seq;

    e_thread_put(mail_thread_new, (EMsg *)m);

    return id;
}

/* ********************************************************************** */

static void
do_scan_subfolders (CamelStore *store, CamelFolderInfo *info, void *data)
{
    EvolutionStorage *storage = data;

    if (info) {
        gtk_object_set_data((GtkObject *)storage, "connected", (void *)1);
        mail_storage_create_folder (storage, store, info);
    }
}

/* synchronous function to scan the & and add folders in a store */
void mail_scan_subfolders(CamelStore *store, EvolutionStorage *storage)
{
    int id;

    id = mail_get_folderinfo(store, do_scan_subfolders, storage);
    /*mail_msg_wait(id);*/
}

/* ** ATTACH MESSAGES ****************************************************** */

struct _build_data {
    void (*done)(CamelFolder *folder, GPtrArray *uids, CamelMimePart *part, char *subject, void *data);
    void *data;
};

static void do_build_attachment(CamelFolder *folder, GPtrArray *uids, GPtrArray *messages, void *data)
{
    struct _build_data *d = data;
    CamelMultipart *multipart;
    CamelMimePart *part;
    char *subject;
    int i;

    if (messages->len == 0) {
        d->done(folder, messages, NULL, NULL, d->data);
        g_free(d);
        return;
    }

    if (messages->len == 1) {
        part = mail_tool_make_message_attachment(messages->pdata[0]);
    } else {
        multipart = camel_multipart_new();
        camel_data_wrapper_set_mime_type(CAMEL_DATA_WRAPPER (multipart), "multipart/digest");
        camel_multipart_set_boundary(multipart, NULL);

        for (i=0;i<messages->len;i++) {
            part = mail_tool_make_message_attachment(messages->pdata[i]);
            camel_multipart_add_part(multipart, part);
            camel_object_unref((CamelObject *)part);
        }
        part = camel_mime_part_new();
        camel_medium_set_content_object(CAMEL_MEDIUM (part), CAMEL_DATA_WRAPPER(multipart));
        camel_object_unref((CamelObject *)multipart);

        camel_mime_part_set_description(part, _("Forwarded messages"));
    }

    subject = mail_tool_generate_forward_subject(messages->pdata[0]);
    d->done(folder, messages, part, subject, d->data);
    g_free(subject);
    camel_object_unref((CamelObject *)part);

    g_free(d);
}

void
mail_build_attachment(CamelFolder *folder, GPtrArray *uids,
              void (*done)(CamelFolder *folder, GPtrArray *messages, CamelMimePart *part, char *subject, void *data), void *data)
{
    struct _build_data *d;

    d = g_malloc(sizeof(*d));
    d->done = done;
    d->data = data;
    mail_get_messages(folder, uids, do_build_attachment, d);
}

/* ** LOAD FOLDER ********************************************************* */

/* there hsould be some way to merge this and create folder, since both can
   presumably create a folder ... */

struct _get_folder_msg {
    struct _mail_msg msg;

    char *uri;
    CamelFolder *folder;
    void (*done) (char *uri, CamelFolder *folder, void *data);
    void *data;
};

static char *get_folder_desc(struct _mail_msg *mm, int done)
{
    struct _get_folder_msg *m = (struct _get_folder_msg *)mm;
    
    return g_strdup_printf(_("Opening folder %s"), m->uri);
}

static void get_folder_get(struct _mail_msg *mm)
{
    struct _get_folder_msg *m = (struct _get_folder_msg *)mm;

    camel_operation_register(mm->cancel);
    m->folder = mail_tool_uri_to_folder(m->uri, &mm->ex);
    camel_operation_unregister(mm->cancel);
}

static void get_folder_got(struct _mail_msg *mm)
{
    struct _get_folder_msg *m = (struct _get_folder_msg *)mm;

    if (m->done)
        m->done (m->uri, m->folder, m->data);
}

static void get_folder_free(struct _mail_msg *mm)
{
    struct _get_folder_msg *m = (struct _get_folder_msg *)mm;

    g_free(m->uri);
    if (m->folder)
        camel_object_unref((CamelObject *)m->folder);
}

static struct _mail_msg_op get_folder_op = {
    get_folder_desc,
    get_folder_get,
    get_folder_got,
    get_folder_free,
};

int
mail_get_folder(const char *uri, void (*done) (char *uri, CamelFolder *folder, void *data), void *data)
{
    struct _get_folder_msg *m;
    int id;

    m = mail_msg_new(&get_folder_op, NULL, sizeof(*m));
    m->uri = g_strdup(uri);
    m->data = data;
    m->done = done;

    id = m->msg.seq;
    e_thread_put(mail_thread_new, (EMsg *)m);
    return id;
}

/* ** GET STORE ******************************************************* */

struct _get_store_msg {
    struct _mail_msg msg;

    char *uri;
    CamelStore *store;
    void (*done) (char *uri, CamelStore *store, void *data);
    void *data;
};

static char *get_store_desc(struct _mail_msg *mm, int done)
{
    struct _get_store_msg *m = (struct _get_store_msg *)mm;
    
    return g_strdup_printf(_("Opening store %s"), m->uri);
}

static void get_store_get(struct _mail_msg *mm)
{
    struct _get_store_msg *m = (struct _get_store_msg *)mm;

    camel_operation_register(mm->cancel);
    m->store = camel_session_get_store(session, m->uri, &mm->ex);
    camel_operation_unregister(mm->cancel);
}

static void get_store_got(struct _mail_msg *mm)
{
    struct _get_store_msg *m = (struct _get_store_msg *)mm;

    if (m->done)
        m->done(m->uri, m->store, m->data);
}

static void get_store_free(struct _mail_msg *mm)
{
    struct _get_store_msg *m = (struct _get_store_msg *)mm;

    g_free(m->uri);
    if (m->store)
        camel_object_unref((CamelObject *)m->store);
}

static struct _mail_msg_op get_store_op = {
    get_store_desc,
    get_store_get,
    get_store_got,
    get_store_free,
};

int
mail_get_store(const char *uri, void (*done) (char *uri, CamelStore *store, void *data), void *data)
{
    struct _get_store_msg *m;
    int id;
    
    m = mail_msg_new(&get_store_op, NULL, sizeof(*m));
    m->uri = g_strdup(uri);
    m->data = data;
    m->done = done;

    id = m->msg.seq;
    e_thread_put(mail_thread_new, (EMsg *)m);
    return id;
}

/* ** CREATE FOLDER ******************************************************* */

/* trying to find a way to remove this entirely and just use get_folder()
   to do the same thing.  But i dont think it can be done, because one works on
   shell uri's (get folder), and the other only works for mail uri's ? */

struct _create_folder_msg {
    struct _mail_msg msg;

    char *uri;
    CamelFolder *folder;
    void (*done) (char *uri, CamelFolder *folder, void *data);
    void *data;
};

static char *create_folder_desc(struct _mail_msg *mm, int done)
{
    struct _create_folder_msg *m = (struct _create_folder_msg *)mm;
    
    return g_strdup_printf(_("Opening folder %s"), m->uri);
}

static void create_folder_get(struct _mail_msg *mm)
{
    struct _create_folder_msg *m = (struct _create_folder_msg *)mm;

    /* FIXME: supply a way to make indexes optional */
    camel_operation_register(mm->cancel);
    m->folder = mail_tool_get_folder_from_urlname(m->uri, "mbox",
                              CAMEL_STORE_FOLDER_CREATE|CAMEL_STORE_FOLDER_BODY_INDEX,
                              &mm->ex);
    camel_operation_unregister(mm->cancel);
}

static void create_folder_got(struct _mail_msg *mm)
{
    struct _create_folder_msg *m = (struct _create_folder_msg *)mm;

    if (m->done)
        m->done(m->uri, m->folder, m->data);
}

static void create_folder_free(struct _mail_msg *mm)
{
    struct _create_folder_msg *m = (struct _create_folder_msg *)mm;

    g_free(m->uri);
    if (m->folder)
        camel_object_unref((CamelObject *)m->folder);
}

static struct _mail_msg_op create_folder_op = {
    create_folder_desc,
    create_folder_get,
    create_folder_got,
    create_folder_free,
};

void
mail_create_folder(const char *uri, void (*done) (char *uri, CamelFolder *folder, void *data), void *data)
{
    struct _create_folder_msg *m;

    m = mail_msg_new(&create_folder_op, NULL, sizeof(*m));
    m->uri = g_strdup(uri);
    m->data = data;
    m->done = done;

    e_thread_put(mail_thread_new, (EMsg *)m);
}

/* ** REMOVE FOLDER ******************************************************* */

struct _remove_folder_msg {
    struct _mail_msg msg;

    char *uri;
    gboolean removed;
    void (*done) (char *uri, gboolean removed, void *data);
    void *data;
};

static char *
remove_folder_desc (struct _mail_msg *mm, int done)
{
    struct _remove_folder_msg *m = (struct _remove_folder_msg *)mm;
    
    return g_strdup_printf (_("Removing folder %s"), m->uri);
}

static void
remove_folder_get (struct _mail_msg *mm)
{
    struct _remove_folder_msg *m = (struct _remove_folder_msg *)mm;
    CamelStore *store;
    CamelURL *url;
    
    m->removed = FALSE;
    
    camel_operation_register (mm->cancel);
    
    store = camel_session_get_store (session, m->uri, &mm->ex);
    if (!store)
        goto done;
    
    url = camel_url_new (m->uri, NULL);
    camel_store_delete_folder (store, url->path + 1, &mm->ex);
    m->removed = !camel_exception_is_set (&mm->ex);
    camel_object_unref (CAMEL_OBJECT (store));
    camel_url_free (url);
    
 done:
    camel_operation_unregister (mm->cancel);
}

static void
remove_folder_got (struct _mail_msg *mm)
{
    struct _remove_folder_msg *m = (struct _remove_folder_msg *)mm;
    
    if (m->done)
        m->done (m->uri, m->removed, m->data);
}

static void
remove_folder_free (struct _mail_msg *mm)
{
    struct _remove_folder_msg *m = (struct _remove_folder_msg *)mm;
    
    g_free (m->uri);
}

static struct _mail_msg_op remove_folder_op = {
    remove_folder_desc,
    remove_folder_get,
    remove_folder_got,
    remove_folder_free,
};

void
mail_remove_folder (const char *uri, void (*done) (char *uri, gboolean removed, void *data), void *data)
{
    struct _remove_folder_msg *m;
    
    m = mail_msg_new (&remove_folder_op, NULL, sizeof (*m));
    m->uri = g_strdup (uri);
    m->data = data;
    m->done = done;
    
    e_thread_put (mail_thread_new, (EMsg *)m);
}

/* ** XFER FOLDER ******************************************************* */

struct _xfer_folder_msg {
    struct _mail_msg msg;
    
    char *src_uri;
    char *dest_uri;
    gboolean remove;
    CamelFolder *folder;
    void (*done) (char *src_uri, char *dest_uri, gboolean remove, CamelFolder *folder, void *data);
    void *data;
};

static char *
xfer_folder_desc (struct _mail_msg *mm, int done)
{
    struct _xfer_folder_msg *m = (struct _xfer_folder_msg *)mm;
    
    if (m->remove)
        return g_strdup_printf (_("Moving folder %s to %s"), m->src_uri, m->dest_uri);
    else
        return g_strdup_printf (_("Copying folder %s to %s"), m->src_uri, m->dest_uri);
}

static void
xfer_folder_get (struct _mail_msg *mm)
{
    struct _xfer_folder_msg *m = (struct _xfer_folder_msg *)mm;
    CamelFolder *src, *dest = NULL;
    GPtrArray *uids;
    
    camel_operation_register (mm->cancel);
    
    src = mail_tool_uri_to_folder (m->src_uri, &mm->ex);
    if (camel_exception_is_set (&mm->ex))
        goto done;
    
    dest = mail_tool_get_folder_from_urlname (m->dest_uri, "mbox",
                          CAMEL_STORE_FOLDER_CREATE | CAMEL_STORE_FOLDER_BODY_INDEX,
                          &mm->ex);
    if (camel_exception_is_set (&mm->ex))
        goto done;
    
    uids = camel_folder_get_uids (src);
    if (m->remove)
        camel_folder_move_messages_to (src, uids, dest, &mm->ex);
    else
        camel_folder_copy_messages_to (src, uids, dest, &mm->ex);
    
    camel_folder_free_uids (src, uids);
    
    if (camel_exception_is_set (&mm->ex))
        goto done;
    
    if (m->remove)
        camel_store_delete_folder (src->parent_store, src->full_name, &mm->ex);
    
 done:
    if (src)
        camel_object_unref (CAMEL_OBJECT (src));
    
    m->folder = dest;
    
    camel_operation_unregister (mm->cancel);
}

static void
xfer_folder_got (struct _mail_msg *mm)
{
    struct _xfer_folder_msg *m = (struct _xfer_folder_msg *)mm;
    
    if (m->done)
        m->done (m->src_uri, m->dest_uri, m->remove, m->folder, m->data);
}

static void
xfer_folder_free (struct _mail_msg *mm)
{
    struct _xfer_folder_msg *m = (struct _xfer_folder_msg *)mm;
    
    g_free (m->src_uri);
    g_free (m->dest_uri);
    if (m->folder)
        camel_object_unref (CAMEL_OBJECT (m->folder));
}

static struct _mail_msg_op xfer_folder_op = {
    xfer_folder_desc,
    xfer_folder_get,
    xfer_folder_got,
    xfer_folder_free,
};

void
mail_xfer_folder (const char *src_uri, const char *dest_uri, gboolean remove_source,
          void (*done) (char *src_uri, char *dest_uri, gboolean remove, CamelFolder *folder, void *data),
          void *data)
{
    struct _xfer_folder_msg *m;
    
    m = mail_msg_new (&xfer_folder_op, NULL, sizeof(*m));
    m->src_uri = g_strdup (src_uri);
    m->dest_uri = g_strdup (dest_uri);
    m->remove = remove_source;
    m->data = data;
    m->done = done;
    
    e_thread_put (mail_thread_new, (EMsg *)m);
}

/* ** SYNC FOLDER ********************************************************* */

struct _sync_folder_msg {
    struct _mail_msg msg;

    CamelFolder *folder;
    void (*done) (CamelFolder *folder, void *data);
    void *data;
};

static char *sync_folder_desc(struct _mail_msg *mm, int done)
{
    return g_strdup(_("Synchronising folder"));
}

static void sync_folder_sync(struct _mail_msg *mm)
{
    struct _sync_folder_msg *m = (struct _sync_folder_msg *)mm;

    camel_operation_register(mm->cancel);
    camel_folder_sync(m->folder, FALSE, &mm->ex);
    camel_operation_unregister(mm->cancel);
}

static void sync_folder_synced(struct _mail_msg *mm)
{
    struct _sync_folder_msg *m = (struct _sync_folder_msg *)mm;

    if (m->done)
        m->done(m->folder, m->data);
}

static void sync_folder_free(struct _mail_msg *mm)
{
    struct _sync_folder_msg *m = (struct _sync_folder_msg *)mm;

    camel_object_unref((CamelObject *)m->folder);
}

static struct _mail_msg_op sync_folder_op = {
    sync_folder_desc,
    sync_folder_sync,
    sync_folder_synced,
    sync_folder_free,
};

void
mail_sync_folder(CamelFolder *folder, void (*done) (CamelFolder *folder, void *data), void *data)
{
    struct _sync_folder_msg *m;

    m = mail_msg_new(&sync_folder_op, NULL, sizeof(*m));
    m->folder = folder;
    camel_object_ref((CamelObject *)folder);
    m->data = data;
    m->done = done;

    e_thread_put(mail_thread_new, (EMsg *)m);
}

/* ******************************************************************************** */

static char *expunge_folder_desc(struct _mail_msg *mm, int done)
{
    return g_strdup(_("Expunging folder"));
}

static void expunge_folder_expunge(struct _mail_msg *mm)
{
    struct _sync_folder_msg *m = (struct _sync_folder_msg *)mm;

    camel_folder_expunge(m->folder, &mm->ex);
}

/* we just use the sync stuff where we can, since it would be the same */
static struct _mail_msg_op expunge_folder_op = {
    expunge_folder_desc,
    expunge_folder_expunge,
    sync_folder_synced,
    sync_folder_free,
};

void
mail_expunge_folder(CamelFolder *folder, void (*done) (CamelFolder *folder, void *data), void *data)
{
    struct _sync_folder_msg *m;

    m = mail_msg_new(&expunge_folder_op, NULL, sizeof(*m));
    m->folder = folder;
    camel_object_ref((CamelObject *)folder);
    m->data = data;
    m->done = done;

    e_thread_put(mail_thread_new, (EMsg *)m);
}

/* ** GET MESSAGE(s) ***************************************************** */

struct _get_message_msg {
    struct _mail_msg msg;

    CamelFolder *folder;
    char *uid;
    void (*done) (CamelFolder *folder, char *uid, CamelMimeMessage *msg, void *data);
    void *data;
    CamelMimeMessage *message;
    CamelOperation *cancel;
};

static char *get_message_desc(struct _mail_msg *mm, int done)
{
    struct _get_message_msg *m = (struct _get_message_msg *)mm;

    return g_strdup_printf(_("Retrieving message %s"), m->uid);
}

static void get_message_get(struct _mail_msg *mm)
{
    struct _get_message_msg *m = (struct _get_message_msg *)mm;

    camel_operation_register(m->cancel);
    m->message = camel_folder_get_message(m->folder, m->uid, &mm->ex);
    camel_operation_unregister(m->cancel);
}

static void get_message_got(struct _mail_msg *mm)
{
    struct _get_message_msg *m = (struct _get_message_msg *)mm;

    if (m->done)
        m->done(m->folder, m->uid, m->message, m->data);
}

static void get_message_free(struct _mail_msg *mm)
{
    struct _get_message_msg *m = (struct _get_message_msg *)mm;

    g_free(m->uid);
    camel_object_unref((CamelObject *)m->folder);
    camel_operation_unref(m->cancel);
}

static struct _mail_msg_op get_message_op = {
    get_message_desc,
    get_message_get,
    get_message_got,
    get_message_free,
};

void
mail_get_message(CamelFolder *folder, const char *uid, void (*done) (CamelFolder *folder, char *uid, CamelMimeMessage *msg, void *data), void *data, EThread *thread)
{
    struct _get_message_msg *m;

    m = mail_msg_new(&get_message_op, NULL, sizeof(*m));
    m->folder = folder;
    camel_object_ref((CamelObject *)folder);
    m->uid = g_strdup(uid);
    m->data = data;
    m->done = done;
    m->cancel = camel_operation_new(NULL, NULL);

    e_thread_put(thread, (EMsg *)m);
}

/* ********************************************************************** */

struct _get_messages_msg {
    struct _mail_msg msg;

    CamelFolder *folder;
    GPtrArray *uids;
    GPtrArray *messages;

    void (*done) (CamelFolder *folder, GPtrArray *uids, GPtrArray *msgs, void *data);
    void *data;
};

static char * get_messages_desc(struct _mail_msg *mm, int done)
{
    return g_strdup_printf(_("Retrieving messages"));
}

static void get_messages_get(struct _mail_msg *mm)
{
    struct _get_messages_msg *m = (struct _get_messages_msg *)mm;
    int i;
    CamelMimeMessage *message;

    for (i=0; i<m->uids->len; i++) {
        mail_statusf(_("Retrieving message number %d of %d (uid \"%s\")"),
                 i+1, m->uids->len, (char *) m->uids->pdata[i]);

        message = camel_folder_get_message(m->folder, m->uids->pdata[i], &mm->ex);
        if (message == NULL)
            break;

        g_ptr_array_add(m->messages, message);
    }
}

static void get_messages_got(struct _mail_msg *mm)
{
    struct _get_messages_msg *m = (struct _get_messages_msg *)mm;

    if (m->done)
        m->done(m->folder, m->uids, m->messages, m->data);
}

static void get_messages_free(struct _mail_msg *mm)
{
    struct _get_messages_msg *m = (struct _get_messages_msg *)mm;
    int i;

    for (i=0;i<m->uids->len;i++)
        g_free(m->uids->pdata[i]);
    g_ptr_array_free(m->uids, TRUE);
    for (i=0;i<m->messages->len;i++) {
        if (m->messages->pdata[i])
            camel_object_unref((CamelObject *)m->messages->pdata[i]);
    }
    g_ptr_array_free(m->messages, TRUE);
    camel_object_unref((CamelObject *)m->folder);
}

static struct _mail_msg_op get_messages_op = {
    get_messages_desc,
    get_messages_get,
    get_messages_got,
    get_messages_free,
};

void
mail_get_messages(CamelFolder *folder, GPtrArray *uids,
          void (*done) (CamelFolder *folder, GPtrArray *uids, GPtrArray *msgs, void *data),
          void *data)
{
    struct _get_messages_msg *m;

    m = mail_msg_new(&get_messages_op, NULL, sizeof(*m));
    m->folder = folder;
    camel_object_ref((CamelObject *)folder);
    m->uids = uids;
    m->messages = g_ptr_array_new();
    m->data = data;
    m->done = done;

    e_thread_put(mail_thread_new, (EMsg *)m);
}

/* ** SAVE MESSAGES ******************************************************* */

struct _save_messages_msg {
    struct _mail_msg msg;

    CamelFolder *folder;
    GPtrArray *uids;
    char *path;
    void (*done)(CamelFolder *folder, GPtrArray *uids, char *path, void *data);
    void *data;
};

static char *save_messages_desc(struct _mail_msg *mm, int done)
{
    return g_strdup(_("Saving messages"));
}

/* tries to build a From line, based on message headers */
/* this is a copy directly from camel-mbox-summary.c */

static char *tz_months[] = {
    "Jan", "Feb", "Mar", "Apr", "May", "Jun",
    "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
};

static char *tz_days[] = {
    "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
};

static char *
build_from(struct _header_raw *header)
{
    GString *out = g_string_new("From ");
    char *ret;
    const char *tmp;
    time_t thetime;
    int offset;
    struct tm tm;

    tmp = header_raw_find(&header, "Sender", NULL);
    if (tmp == NULL)
        tmp = header_raw_find(&header, "From", NULL);
    if (tmp != NULL) {
        struct _header_address *addr = header_address_decode(tmp);

        tmp = NULL;
        if (addr) {
            if (addr->type == HEADER_ADDRESS_NAME) {
                g_string_append(out, addr->v.addr);
                tmp = "";
            }
            header_address_unref(addr);
        }
    }
    if (tmp == NULL)
        g_string_append(out, "unknown@nodomain.now.au");

    /* try use the received header to get the date */
    tmp = header_raw_find(&header, "Received", NULL);
    if (tmp) {
        tmp = strrchr(tmp, ';');
        if (tmp)
            tmp++;
    }

    /* if there isn't one, try the Date field */
    if (tmp == NULL)
        tmp = header_raw_find(&header, "Date", NULL);

    thetime = header_decode_date(tmp, &offset);
    thetime += ((offset / 100) * (60 * 60)) + (offset % 100) * 60;
    gmtime_r(&thetime, &tm);
    g_string_sprintfa(out, " %s %s %d %02d:%02d:%02d %4d\n",
              tz_days[tm.tm_wday],
              tz_months[tm.tm_mon], tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec, tm.tm_year + 1900);

    ret = out->str;
    g_string_free(out, FALSE);
    return ret;
}

static void save_messages_save(struct _mail_msg *mm)
{
    struct _save_messages_msg *m = (struct _save_messages_msg *)mm;
    CamelStreamFilter *filtered_stream;
    CamelMimeFilterFrom *from_filter;
    CamelStream *stream;
    int fd, i;
    char *from;

    fd = open(m->path, O_WRONLY | O_CREAT | O_TRUNC, 0666);
    if (fd == -1) {
        camel_exception_setv(&mm->ex, CAMEL_EXCEPTION_SYSTEM,
                     _("Unable to create output file: %s\n %s"), m->path, strerror(errno));
        return;
    }
    
    stream = camel_stream_fs_new_with_fd(fd);
    from_filter = camel_mime_filter_from_new();
    filtered_stream = camel_stream_filter_new_with_stream(stream);
    camel_stream_filter_add(filtered_stream, (CamelMimeFilter *)from_filter);
    camel_object_unref((CamelObject *)from_filter);
    
    for (i=0; i<m->uids->len; i++) {
        CamelMimeMessage *message;

        mail_statusf(_("Saving message %d of %d (uid \"%s\")"),
                 i+1, m->uids->len, (char *)m->uids->pdata[i]);
        
        message = camel_folder_get_message(m->folder, m->uids->pdata[i], &mm->ex);
        if (!message)
            break;

        /* we need to flush after each stream write since we are writing to the same fd */
        from = build_from(((CamelMimePart *)message)->headers);
        if (camel_stream_write_string(stream, from) == -1
            || camel_stream_flush(stream) == -1
            || camel_data_wrapper_write_to_stream((CamelDataWrapper *)message, (CamelStream *)filtered_stream) == -1
            || camel_stream_flush((CamelStream *)filtered_stream) == -1) {
            camel_exception_setv(&mm->ex, CAMEL_EXCEPTION_SYSTEM,
                         _("Error saving messages to: %s:\n %s"), m->path, strerror(errno));
            g_free(from);
            camel_object_unref((CamelObject *)message);
            break;
        }
        g_free(from);
        camel_object_unref((CamelObject *)message);
    }

    camel_object_unref((CamelObject *)filtered_stream);
    camel_object_unref((CamelObject *)stream);
}

static void save_messages_saved(struct _mail_msg *mm)
{
    struct _save_messages_msg *m = (struct _save_messages_msg *)mm;

    if (m->done)
        m->done(m->folder, m->uids, m->path, m->data);
}

static void save_messages_free(struct _mail_msg *mm)
{
    struct _save_messages_msg *m = (struct _save_messages_msg *)mm;
    int i;

    for (i=0;i<m->uids->len;i++)
        g_free(m->uids->pdata[i]);
    g_ptr_array_free(m->uids, TRUE);
    camel_object_unref((CamelObject *)m->folder);
    g_free(m->path);
}

static struct _mail_msg_op save_messages_op = {
    save_messages_desc,
    save_messages_save,
    save_messages_saved,
    save_messages_free,
};

int
mail_save_messages(CamelFolder *folder, GPtrArray *uids, const char *path,
           void (*done) (CamelFolder *folder, GPtrArray *uids, char *path, void *data), void *data)
{
    struct _save_messages_msg *m;
    int id;

    m = mail_msg_new(&save_messages_op, NULL, sizeof(*m));
    m->folder = folder;
    camel_object_ref((CamelObject *)folder);
    m->uids = uids;
    m->path = g_strdup(path);
    m->data = data;
    m->done = done;

    id = m->msg.seq;
    e_thread_put(mail_thread_new, (EMsg *)m);

    return id;
}

/* ** SAVE PART ******************************************************* */

struct _save_part_msg {
    struct _mail_msg msg;

    CamelMimePart *part;
    char *path;
    void (*done)(CamelMimePart *part, char *path, int saved, void *data);
    void *data;
};

static char *save_part_desc(struct _mail_msg *mm, int done)
{
    return g_strdup(_("Saving attachment"));
}

static void save_part_save(struct _mail_msg *mm)
{
    struct _save_part_msg *m = (struct _save_part_msg *)mm;
    CamelMimeFilterCharset *charsetfilter;
    CamelContentType *content_type;
    CamelStreamFilter *filtered_stream;
    CamelStream *stream_fs;
    CamelDataWrapper *data;
    const char *charset;

    stream_fs = camel_stream_fs_new_with_name(m->path, O_WRONLY|O_CREAT, 0600);
    if (stream_fs == NULL) {
        camel_exception_setv(&mm->ex, 1, _("Cannot create output file: %s:\n %s"), m->path, strerror(errno));
        return;
    }

    /* we only convert text/ parts, and we only convert if we have to
       null charset param == us-ascii == utf8 always, and utf8 == utf8 obviously */
    /* this will also let "us-ascii that isn't really" parts pass out in
       proper format, without us trying to treat it as what it isn't, which is
       the same algorithm camel uses */
    
    data = camel_medium_get_content_object((CamelMedium *)m->part);
    content_type = camel_mime_part_get_content_type(m->part);
    if (header_content_type_is(content_type, "text", "*")
        && (charset = header_content_type_param(content_type, "charset"))
        && strcasecmp(charset, "utf-8") != 0) {
        charsetfilter = camel_mime_filter_charset_new_convert("utf-8", charset);
        filtered_stream = camel_stream_filter_new_with_stream(stream_fs);
        camel_stream_filter_add(filtered_stream, CAMEL_MIME_FILTER(charsetfilter));
        camel_object_unref(CAMEL_OBJECT(charsetfilter));
    } else {
        /* no we can't use a CAMEL_BLAH() cast here, since its not true, HOWEVER
           we only treat it as a normal stream from here on, so it is OK */
        filtered_stream = (CamelStreamFilter *)stream_fs;
        camel_object_ref(CAMEL_OBJECT(stream_fs));
    }
    
    if (camel_data_wrapper_write_to_stream(data, CAMEL_STREAM(filtered_stream)) == -1
        || camel_stream_flush (CAMEL_STREAM(filtered_stream)) == -1)
        camel_exception_setv(&mm->ex, 1, _("Could not write data: %s"), strerror(errno));

    camel_object_unref (CAMEL_OBJECT (filtered_stream));
    camel_object_unref (CAMEL_OBJECT (stream_fs));
}

static void save_part_saved(struct _mail_msg *mm)
{
    struct _save_part_msg *m = (struct _save_part_msg *)mm;

    if (m->done)
        m->done(m->part, m->path, !camel_exception_is_set(&mm->ex), m->data);
}

static void save_part_free(struct _mail_msg *mm)
{
    struct _save_part_msg *m = (struct _save_part_msg *)mm;

    camel_object_unref((CamelObject *)m->part);
    g_free(m->path);
}

static struct _mail_msg_op save_part_op = {
    save_part_desc,
    save_part_save,
    save_part_saved,
    save_part_free,
};

int
mail_save_part(CamelMimePart *part, const char *path,
           void (*done)(CamelMimePart *part, char *path, int saved, void *data), void *data)
{
    struct _save_part_msg *m;
    int id;

    m = mail_msg_new(&save_part_op, NULL, sizeof(*m));
    m->part = part;
    camel_object_ref((CamelObject *)part);
    m->path = g_strdup(path);
    m->data = data;
    m->done = done;

    id = m->msg.seq;
    e_thread_put(mail_thread_queued, (EMsg *)m);

    return id;
}


/* ** GO OFFLINE ***************************************************** */

struct _set_offline_msg {
    struct _mail_msg msg;

    CamelStore *store;
    gboolean offline;
    void (*done)(CamelStore *store, void *data);
    void *data;
};

static char *set_offline_desc(struct _mail_msg *mm, int done)
{
    struct _set_offline_msg *m = (struct _set_offline_msg *)mm;
    char *service_name = camel_service_get_name (CAMEL_SERVICE (m->store), TRUE);
    char *msg;

    msg = g_strdup_printf (_("Disconnecting from %s"), service_name);
    g_free (service_name);
    return msg;
}

static void set_offline_do(struct _mail_msg *mm)
{
    struct _set_offline_msg *m = (struct _set_offline_msg *)mm;

    if (CAMEL_IS_DISCO_STORE (m->store) &&
        camel_disco_store_can_work_offline (CAMEL_DISCO_STORE (m->store))) {
        if (m->offline) {
            CamelFolder *inbox;

            /* FIXME. Something more generic here... */
            inbox = camel_store_get_inbox (m->store, NULL);
            if (inbox) {
                camel_disco_folder_prepare_for_offline (
                    CAMEL_DISCO_FOLDER (inbox),
                    "(match-all (not (system-flag \"Seen\")))",
                    &mm->ex);
                camel_object_unref (CAMEL_OBJECT (inbox));
                if (camel_exception_is_set (&mm->ex))
                    return;
            }
        }

        camel_disco_store_set_status (CAMEL_DISCO_STORE (m->store),
                          m->offline ? CAMEL_DISCO_STORE_OFFLINE :
                          CAMEL_DISCO_STORE_ONLINE, &mm->ex);
    } else {
        if (m->offline) {
            camel_service_disconnect (CAMEL_SERVICE (m->store),
                          TRUE, &mm->ex);
        }
    }
}

static void set_offline_done(struct _mail_msg *mm)
{
    struct _set_offline_msg *m = (struct _set_offline_msg *)mm;

    if (m->done)
        m->done(m->store, m->data);
}

static void set_offline_free(struct _mail_msg *mm)
{
    struct _set_offline_msg *m = (struct _set_offline_msg *)mm;

    camel_object_unref((CamelObject *)m->store);
}

static struct _mail_msg_op set_offline_op = {
    set_offline_desc,
    set_offline_do,
    set_offline_done,
    set_offline_free,
};

void
mail_store_set_offline (CamelStore *store, gboolean offline,
            void (*done)(CamelStore *, void *data),
            void *data)
{
    struct _set_offline_msg *m;

    m = mail_msg_new(&set_offline_op, NULL, sizeof(*m));
    m->store = store;
    camel_object_ref((CamelObject *)store);
    m->offline = offline;
    m->data = data;
    m->done = done;

    e_thread_put(mail_thread_queued, (EMsg *)m);
}