c_simple_http/src/http.h

// ISC License
// 
// Copyright (c) 2024 Stephen Seo
// 
// Permission to use, copy, modify, and/or 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 SEODISPARATE_COM_C_SIMPLE_HTTP_HTTP_H_
#define SEODISPARATE_COM_C_SIMPLE_HTTP_HTTP_H_

#include <SimpleArchiver/src/data_structures/hash_map.h>

typedef struct HTTPTemplates {
  /// Each entry in this data structure is a hash map where its value for the
  /// key "PATH" is the path it represents. The "key" value should match the
  /// mentioned value for "PATH".
  SDArchiverHashMap *paths;
} HTTPTemplates;

typedef HTTPTemplates HashMapWrapper;

/// Each line in the config should be a key-value pair separated by an equals
/// sign. All whitespace is ignored unless if the value is quoted. A part of a
/// string can be "quoted" if it is surrounded by three single-quotes or three
/// double-quotes. If there exists a line with the key "PATH", then the value
/// must be a path like "/cache" and all the following key-value pairs are
/// associated with that PATH until the next "PATH" key or EOF. Each "PATH"
/// "block" should have a "HTML" key-value pair where the value is a HTML
/// template. Inside such HTML templates should be strings like
/// "{{{{example_key}}}}" which will be replaced by the string value of the key
/// name deliminated by the four curly braces. "HTML_FILE" specifies a filename
/// to read instead of using a literal string in the config file. It will store
/// the contents of the specified file with the "HTML" key internally.
HTTPTemplates c_simple_http_set_up_templates(const char *config_filename);

void c_simple_http_clean_up_templates(HTTPTemplates *templates);

/// Returned buffer must be "free"d after use.
/// If the request is not valid, or 404, then the buffer will be NULL.
char *c_simple_http_request_response(const char *request, unsigned int size,
                                     const HTTPTemplates *templates);

#endif

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