/*
 * this 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 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, see <http://www.gnu.org/licenses/>.";
 *
 * (c) Alexander Vdolainen 2007, 2026 <alex@vapaa.xyz>
 * subrelay: a minimalistic maillist server based on external IMAPs/SMTPs
 *
 * curl_imapsmtp.h: IMAPS SMTPs functions using libcurl
 *
 */
#ifndef __MAIL_ENGINE_H__
#define __MAIL_ENGINE_H__

#include <stddef.h>

#include <ilib/configuration.h>

#define MAX_IMAP_RESPONSE (25u * 1024u * 1024u)

typedef struct mail_message {
  char *raw_data; /* Full raw RFC 822 byte payload */
  size_t size; /* Size of raw payload */
  unsigned long uid; /* IMAP Unique Identifier */
} mail_message_t;

typedef struct mail_list_results {
  unsigned long *uids;
  size_t count;
} mail_list_results_t;

/* Initialize and cleanup global libcurl environment */
int mail_engine_global_init(void);
void mail_engine_global_cleanup(void);

/* IMAP Client API */
int imap_fetch_unseen_uids(const subrelay_config_t *cfg, mail_list_results_t *results);
int imap_fetch_message(const subrelay_config_t *cfg, unsigned long uid, mail_message_t *msg);
int imap_expunge_message(const subrelay_config_t *cfg, unsigned long uid);
void mail_message_free(mail_message_t *msg);
void mail_list_results_free(mail_list_results_t *res);

/* SMTP Client API */
int smtp_send_message(const subrelay_config_t *cfg, const char **recipients,
                      size_t recipient_count, const char *raw_msg, size_t msg_len);

#endif /* __MAIL_ENGINE_H__ */