#ifndef __MAIL_SMTP_H__
#define __MAIL_SMTP_H__

#include "stellar/session.h"
#include "mail_decoder_email.h"

#define SMTP_STR_220	"220"
#define SMTP_STR_HELO	"HELO "
#define SMTP_STR_EHLO	"EHLO "
#define SMTP_STR_PLAIN_LEN 10
#define SMTP_PLAIN_MAXLEN		1024
#define SMTP_PLAIN_FLAG		100

#define MAIL_FROM_LEN	 120
#define RSETQUIT_CMD_LEN	 20
#define BDAT_CMD_LEN	 50
#define MAX_MAIL_USER_LEN 512

enum SMTP_COMMAND {
    SMTP_COMMAND_UNKNOWN,
    SMTP_COMMAND_EHLO,
    SMTP_COMMAND_HELO,
    SMTP_COMMAND_AUTH,
    SMTP_COMMAND_STARTTLS,
    SMTP_COMMAND_MAIL,
    SMTP_COMMAND_SEND,
    SMTP_COMMAND_SOML,
    SMTP_COMMAND_SAML,
    SMTP_COMMAND_RCPT,
    SMTP_COMMAND_DATA,
    SMTP_COMMAND_VRFY,
    SMTP_COMMAND_EXPN,
    SMTP_COMMAND_NOOP,
    SMTP_COMMAND_RSET,
    SMTP_COMMAND_QUIT,
    SMTP_COMMAND_MAX,
};

typedef enum SMTP_CMD_STATE
{
	SMTP_CMD_EHLO=20,
	SMTP_CMD_AUTH,
	SMTP_CMD_USER_PASS,
	SMTP_CMD_MAIL_FROM,
	SMTP_CMD_RCPT_TO,
	SMTP_CMD_DATA,
	SMTP_CMD_RSET,
	SMTP_CMD_BDAT,
	SMTP_CMD_QUIT,
	SMTP_CMD_DROP,
	SMTP_CMD_XOAUTH2,
	SMTP_CMD_UNKNOWN,
	SMTP_CMD_STARTTLS,
}SMTP_CMD_STATE_t;

struct smtp_parser {
    struct mail_command *current_command;

    int command_topic_id;
    struct mq_runtime *mq;

    struct email_parser *eml_parser;
};

int smtp_identify(const char *payload, size_t payload_len, int is_c2s);
int smtp_parser_entry(struct smtp_parser *parser, struct session *sess, const char *payload, size_t payload_len, int is_c2s);
void smtp_parser_free(struct smtp_parser *parser);
struct smtp_parser * smtp_parser_new(struct mq_runtime *mq, struct mail_topics *topics, int is_c2s);

#endif