/*
 * Copyright (c) 2023 joshua stein <jcs@jcs.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef __BINKP_H__
#define __BINKP_H__

#include "fidopkt.h"
#include "tcp.h"
#include "uthread.h"
#include "util.h"
	
struct binkp_frame {
	u_int16_t data_size;
	char command_id;
#define BINKP_DATA				-1
#define BINKP_COMMAND_M_NUL		0
#define BINKP_COMMAND_M_ADR		1
#define BINKP_COMMAND_M_PWD		2
#define BINKP_COMMAND_M_FILE	3
#define BINKP_COMMAND_M_OK		4
#define BINKP_COMMAND_M_EOB		5
#define BINKP_COMMAND_M_GOT		6
#define BINKP_COMMAND_M_ERR		7
#define BINKP_COMMAND_M_BSY		8
#define BINKP_COMMAND_M_GET		9
#define BINKP_COMMAND_M_SKIP	10
	
	char type;
#define BINKP_TYPE_DATA			0x0
#define BINKP_TYPE_COMMAND		0x1
};

struct binkp_file {
	char filename[64];
	size_t size;
	unsigned long mtime;
	size_t data_read;
	Str255 pfilename;
	short frefnum;
};

struct binkp_connection {
	TCPiopb tcp_send_iopb;
	TCPiopb tcp_read_iopb;
	StreamPtr tcp_stream;
	unsigned char *tcp_buf;
	size_t tcp_buf_size;
	wdsEntry tcp_wds[2];
	TCPStatusPB tcp_status_pb;
	
	char *buf;
	size_t buf_size;
	struct binkp_frame cur_frame;
	struct binkp_file cur_incoming_file;
	time_t last_frame_at;
	bool done_receiving;
	bool done_sending;
	bool error;
};

extern bool binkp_ready;
extern time_t binkp_next_poll;
extern bool binkp_last_poll_error;

void binkp_init(void);
bool binkp_reinit(void);
void binkp_atexit(void);
void binkp_poll(void);
bool binkp_scan_message(struct fidopkt_message *msg);
bool binkp_packets_in_outbox(void);

#endif