#ifndef INCLUDED_HTTP_H
#define INCLUDED_HTTP_H

#include <stddef.h>
#include <stdio.h>

typedef struct _HTTPHeaderList HTTPHeaderList;

struct _HTTPHeaderList {
    char *key;
    size_t key_length;
    char *value;
    size_t value_length;
    HTTPHeaderList *next;
};

HTTPHeaderList *http_header_list_push(HTTPHeaderList *list, const char *key, const char *value);

void free_http_header_list(HTTPHeaderList *list);

const char *http_header_list_search(HTTPHeaderList *list, const char *key, const char *def);

typedef enum {
    HRPR_OK,
    HRPR_NO_MEM,
    HRPR_BAD_VERSION,
    HRPR_BAD_FORMAT,
    HRPR_READ_FAILED,
} HTTPRequestParseResult;

typedef struct {
    const char *method;
    const char *uri;
    // relative (shares memory with uri)
    const char *path;

    HTTPHeaderList *headers;
} HTTPRequest;

HTTPRequestParseResult parse_http_request(FILE *stream, HTTPRequest *restrict out);

void free_http_request(HTTPRequest *restrict req);

typedef struct {
    int status;
    HTTPHeaderList *headers;
    size_t body_length;
} HTTPResponse;

const char *status_code_to_message(int status, size_t *restrict length);

void format_http_response(FILE *stream, HTTPResponse *restrict resp);

#endif