/*
 * Copyright (c) 2021-2024 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.
 */

#include <stdarg.h>
#include <stdio.h>
#include <string.h>

#include "detritus.h"

#ifndef __GEMINI_H__
#define __GEMINI_H__

#define GEMINI_PORT 1965

extern struct request_handler gemini_handler;

enum {
	REQ_STATE_NEGOTIATING = 1,
	REQ_STATE_SENDING_REQUEST,
	REQ_STATE_PARSING_RESPONSE
};

enum {
	GEM_STATE_HEADER,
	GEM_STATE_GEMTEXT,
	GEM_STATE_REDIRECT,
	GEM_STATE_DOWNLOAD
};

struct gemini_request {
	struct browser *browser;
	struct URI *uri;
	
	uint8_t tls_id;
	unsigned char tcp_buf[(4 * 1500) + 2048]; /* 4*MTU + tcp_input */
	unsigned char tcp_input[2048];
	size_t tcp_input_len;
	short state;
	
	TCPiopb tcp_iopb;
	StreamPtr tcp_stream;
	wdsEntry tcp_wds[2];
	TCPStatusPB tcp_status_pb;
	bool tcp_done_reading;
	
	char message[1024 + 3];
	size_t message_len;
	
	short gem_state;
	char response[1024];
	size_t response_len;
	size_t total_response_len;
	
	char mime_type[64];
	unsigned long style;
};

struct URI * gemini_parse_uri(char *uristr);
void * gemini_init_request(struct browser *browser, struct URI *uri);
bool gemini_process_request(void *cookie);
void gemini_free(void *cookie);

#endif