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<?php declare(strict_types=1); |
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use html_go\exceptions\InternalException; |
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use html_go\model\Config; |
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/** |
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* The main entry point. Called from <code>index.php</code> in the application |
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* root. The parameters are provided for testing thus they have default values. |
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* @param string $uri |
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* @param string $method |
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* @return string The html to be rendered. |
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*/ |
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function dispatch(string $uri = null, string $method = HTTP_GET): string { |
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if ($uri === null) { |
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$uri = $_SERVER['REQUEST_URI']; // @codeCoverageIgnore |
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$method = \strtoupper($_SERVER['REQUEST_METHOD']); // @codeCoverageIgnore |
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} |
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$uri = strip_url_parameters($uri); |
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$uri = \trim($uri, FWD_SLASH); |
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if (empty($uri)) { |
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$uri = HOME_INDEX_KEY; |
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} |
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return route($uri, $method); |
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} |
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/** |
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* Route the given HTTP request. |
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* @param string $uri The requested URI |
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* @param string $method the HTTP method |
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* @throws InternalException |
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* @return string |
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*/ |
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function route(string $uri, string $method): string { |
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if ($method === HTTP_POST) { |
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return not_found(); |
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} |
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$result = \preg_match(POST_REQ_REGEX, $uri); |
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if ($result === false) { |
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throw new InternalException("preg_match() failed checking [$uri]"); // @codeCoverageIgnore |
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} |
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if ($result === 1) { |
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$content = get_content_object($uri); |
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} else { |
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$content = process_request($uri, get_pagination_pagenumber(), get_config()->getInt(Config::KEY_POSTS_PERPAGE)); |
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} |
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if ($content === null) { |
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return not_found(); |
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} |
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return render(vars: get_template_context($content)); |
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} |
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/** |
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* Process a request for a single blog-post. |
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* @param string $uri |
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* @param int $pageNum |
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* @param int $perPage |
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* @return \stdClass|NULL |
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*/ |
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function process_request(string $uri, int $pageNum, int $perPage): ?\stdClass { |
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$template = LIST_TEMPLATE; |
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switch (true) { |
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case \str_starts_with($uri, POST_INDEX_KEY.FWD_SLASH): |
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$list = get_posts($pageNum, $perPage); |
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break; |
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case \str_starts_with($uri, CAT_INDEX_KEY.FWD_SLASH): |
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$list = get_categories($pageNum, $perPage); |
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break; |
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case \str_starts_with($uri, TAG_INDEX_KEY.FWD_SLASH): |
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$list = get_tags($pageNum, $perPage); |
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break; |
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default: // home page or static page |
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$list = []; |
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$template = SINGLE_TEMPLATE; |
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} |
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if ($uri === HOME_INDEX_KEY) { |
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$content = get_homepage($pageNum, $perPage); |
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} else { |
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$content = get_content_object($uri, $list); |
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} |
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if (!empty($content) && empty($content->template)) { |
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$content->template = $template; |
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} |
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return $content; |
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} |
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function get_homepage(int $pageNum, int $perPage): \stdClass { |
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if (get_config()->getBool(Config::KEY_STATIC_INDEX)) { |
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$content = get_content_object(HOME_INDEX_KEY); |
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if ($content === null) { |
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throw new InternalException("Unable to find the home index page!"); |
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} |
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if (empty($content->template)) { |
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$content->template = SINGLE_TEMPLATE; |
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} |
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} else { |
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$content = get_content_object(HOME_INDEX_KEY, get_posts($pageNum, $perPage)); |
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if ($content === null) { |
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throw new InternalException("Unable to find the home index page!"); |
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} |
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if (empty($content->template)) { |
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$content->template = LIST_TEMPLATE; |
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} |
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} |
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return $content; |
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} |
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/** |
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* Strips parameters from the given URL. |
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* @param string $url |
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* @return string returns the URL without the parameters. |
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*/ |
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function strip_url_parameters(string $url): string { |
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if (($pos = \strpos($url, '?')) === false) { |
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return $url; |
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} |
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parse_query(\substr($url, $pos + 1)); |
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return \substr($url, 0, $pos); |
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} |
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/** |
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* @param string $query (Optional). Calling with this parameter set will populate the returned data array. |
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* @return array<string, string> |
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*/ |
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function parse_query(string $query = null): array { |
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static $data = []; |
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if (empty($data) && $query !== null) { |
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\parse_str($query, $data); |
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} |
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return $data; |
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} |
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/** |
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* Return the query string value for the given key. |
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* @param string $key |
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* @return string|NULL <code>null</code> if the key is not found |
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*/ |
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function get_query_parameter(string $key): ?string { |
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$params = parse_query(); |
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if (isset($params[$key])) { |
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return $params[$key]; |
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} |
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return null; |
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} |
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ColonelBlimp /
html-go
