http.h

#ifndef PLXR_HTTP_H
#define PLXR_HTTP_H

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

#define HTTP_MAX_HEADERS (40)

struct plxr_http_header {
	char *key;
	char *value;
};

struct plxr_http_request {
	char *method;
	char *uri;
	char *version;
	struct plxr_http_header headers[HTTP_MAX_HEADERS];
	size_t headers_len;
};

int plxr_http_response(
	char *dest, size_t size,
	int status_code,
	const char *content_type,
	int content_length
);

/* Parses a *mutable* string buffer `src`
 * into a struct plxr_http_request `dest`
 *
 * returns
 *  1 on success
 *  0 on failure
 */
int plxr_http_parse(struct plxr_http_request *dest, char *src);

/* printf()'s a request and its headers.
 */
void plxr_http_print(struct plxr_http_request *req);

/* Returns the value of a header on success or NULL on failure.
 */
char *plxr_http_header(struct plxr_http_request *req, char *key);

/* Unescapes a url at `src`, writing it to `dest`, no more than `count` bytes.
 * ex. "https%3A%2F%2Fwww.google.com%2F" -> "https://www.google.com/"
 *
 * If an invalid hex code is encountered, -1 is returned.
 * Otherwise the size of the unescaped url is returned, regardless of if
 * it exceeded `count` or not.
 */
ssize_t plxr_unescape_url(char *dest, size_t count, const char *src);

ssize_t plxr_parse_scheme(char *dest, size_t count, const char *src);
ssize_t plxr_parse_path(char *dest, size_t count, const char *src);

#endif /* PLXR_HTTP_H */