279 lines
9.7 KiB
PHP
279 lines
9.7 KiB
PHP
<?php
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require_once "lib/dynamic_style.php";
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require_once "lib/script_data.php";
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/**
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* Loads and returns the result of a PHP file.
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* This function is typically used to process dynamic content of a page.
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* It simply scopes an external file into a function to prevent variable conflicts.
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*
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* @param string $page_file The file path to the dynamic page.
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* @return array Returns the array of data generated by including the PHP file.
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*/
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function renderDynamicPage(string $page_file): array
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{
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return require $page_file;
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}
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/**
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* Removes all HTML comments from the provided content string.
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*
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* @param string $content The HTML content from which to remove comments.
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* @return string The content without any HTML comments.
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*/
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function removeHtmlComments(string $content = '') :string {
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return preg_replace('/<!--(.|\s)*?-->/', '', $content);
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}
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/**
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* Parses custom `<page>` tags from the given input string and extracts parameters.
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* Returns the input string with `<page>` tags removed and a list of parameters.
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*
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* @param string $input The input HTML or text containing `<page>` tags.
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* @return array Returns an associative array with 'parameters' (parsed from the tag)
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* and 'output' (the modified input string with `<page>` tags removed).
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*/
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function parsePageTag(string $input): array
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{
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// Define the pattern for the tag
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$pattern = '/<page\s+([^>]+)><\/page>/i';
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// Check if the pattern matches the input
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if (preg_match($pattern, $input, $matches)) {
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// Extract parameters
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$parameters = [];
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if (preg_match_all('/(\w+)="([^"]+)"/', $matches[1], $paramMatches, PREG_SET_ORDER)) {
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foreach ($paramMatches as $paramMatch) {
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$parameters[$paramMatch[1]] = $paramMatch[2];
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}
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}
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// Remove the tag from the input
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$output = preg_replace($pattern, '', $input, 1);
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return ['parameters' => $parameters, 'output' => $output];
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}
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// If no match is found, return the original input
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return ['parameters' => [], 'output' => $input];
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}
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/**
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* Renders a page based on specified page and site names, handling dynamic and static content,
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* permissions, and error pages.
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*
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* @param string|null $page_name The name of the page to render. If null, uses default from request.
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* @param string|null $site_name The name of the site to render. If null, uses default from request.
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* @return array Returns an associative array containing the rendered page content, page name, site name, and page title.
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*/
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function renderPage(string $page_name = null, string $site_name = null): array
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{
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global $routerConfig;
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global $routerRequest;
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if(!$site_name) {
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$site_name = $routerRequest["site_name"];
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}
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$site_title = str_replace("_", " ", $site_name);
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$site_title = ucfirst($site_title);
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if(!$page_name){
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$page_name = $routerRequest["page_name"];
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}
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$dynamic_page_file = $routerConfig["page_dir"] . $site_name . "/" . $page_name . ".php";
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$page_file = $routerConfig["page_dir"] . $site_name . "/" . $page_name . ".html";
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if (file_exists($dynamic_page_file)){
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$pageMetadata = renderDynamicPage($dynamic_page_file);
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$page = $pageMetadata["output"];
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}
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elseif (file_exists($page_file)){
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$page_tmp = file_get_contents($page_file);
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$pageMetadata = parsePageTag($page_tmp);
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$page = $pageMetadata["output"];
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}
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else{
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$page_tmp = file_get_contents($routerConfig["template_dir"] . "404.html");
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$pageMetadata = parsePageTag($page_tmp);
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$page = $pageMetadata["output"];
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http_response_code(404);
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}
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if(!empty($pageMetadata["parameters"]["minimal_permission_level"])){
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$page_required_permission = intval($pageMetadata["parameters"]["minimal_permission_level"]);
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}
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else{
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$page_required_permission = $routerConfig["page"]["default_permissions"];
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}
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if(!empty($pageMetadata["parameters"]["secret"])){
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$origSecret = $pageMetadata["parameters"]["secret"];
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if ($origSecret == "yes"){
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$is_secret_page = 1;
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}
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elseif ($origSecret == "no"){
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$is_secret_page = 0;
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}
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else{
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$is_secret_page = $routerConfig["page"]["default_secret"];
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}
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}
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else{
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$is_secret_page = $routerConfig["page"]["default_secret"];
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}
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if($page_required_permission > $_SESSION["privilege_level"]){
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if($is_secret_page == 1) {
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$page_tmp = file_get_contents($routerConfig["template_dir"] . "404.html");
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$pageMetadata = parsePageTag($page_tmp);
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$page = $pageMetadata["output"];
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http_response_code(404);
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}
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else{
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$page_tmp = file_get_contents($routerConfig["template_dir"] . "403.html");
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$pageMetadata = parsePageTag($page_tmp);
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$page = $pageMetadata["output"];
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http_response_code(403);
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}
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}
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$page = str_replace("__DEFAULT_LINK__", "/" . $routerConfig["default_site"] . "/" . $routerConfig["default_page"], $page);
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if(!is_string($page)){
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$page = "";
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}
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if(!empty($pageMetadata["parameters"]["page_title"])){
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$page_title = $pageMetadata["parameters"]["page_title"];
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}
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else{
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$page_title = $page_name;
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}
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$page_title = $routerConfig['site_prefix'] . " " . $site_title . " " . $page_title;
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$page = str_replace("__TEMPLATE_PAGE_TITLE__", $page_title, $page);
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$page = removeHtmlComments($page);
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return [
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"PageContent" => $page,
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"PageName" => $page_name,
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"SiteName" => $site_name,
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"PageTitle" => $page_title,
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];
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}
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/**
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* Compiles a complete web page by injecting dynamic elements into a template skeleton,
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* including headers, footers, and SEO tags.
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* It is used when not going to a page by AJAX to initialize everything.
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*
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* @param string|null $site_name_in The site name to be used; defaults from global configuration if null.
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* @param string|null $page_name_in The page name to be used; defaults from global configuration if null.
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* @return string The complete HTML content of the web page ready for display.
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*/
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function getPage(string $site_name_in = null, string $page_name_in = null): string
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{
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$page_tmp = renderPage($page_name_in, $site_name_in);
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$page = $page_tmp["PageContent"];
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$page_name = $page_tmp["PageName"];
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$site_name = $page_tmp["SiteName"];
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global $routerConfig;
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$skeleton = file_get_contents($routerConfig["template_dir"] . "skeleton.html");
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$footer = file_get_contents($routerConfig["template_dir"] . "footer.html");
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$page_title = $page_tmp["PageTitle"];
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$dynamic_style = doDynamicStyling();
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$dynamic_script_data = [
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"currentPage" => $page_name,
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"currentSite" => $site_name,
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"currentTitle" => $page_title,
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"defaultPage" => $routerConfig["default_page"],
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"defaultSite" => $routerConfig["default_site"],
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"UserInfo_Privileges" => $_SESSION["privilege_level"],
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];
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if(isLoggedIn()){
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$dynamic_script_data += [
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"UserInfo_FirstName" => $_SESSION["first_name"],
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"UserInfo_LastName" => $_SESSION["last_name"],
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"UserInfo_Nickname" => $_SESSION["nickname"],
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"UserInfo_Email" => $_SESSION["email"],
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];
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}
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$dynamic_script = generateScriptData($dynamic_script_data);
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$navigation = generateNavigation();
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$seo = array();
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if(!empty($pageMetadata["parameters"]["author"])){
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$seo["author"] = htmlspecialchars($pageMetadata["parameters"]["author"]);
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}
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else{
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$seo["author"] = $routerConfig["seo"]["author"];
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}
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if(!empty($pageMetadata["parameters"]["description"])){
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$seo["description"] = htmlspecialchars($pageMetadata["parameters"]["description"]);
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}
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else{
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$seo["description"] = $routerConfig["seo"]["description"];
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}
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if(!empty($pageMetadata["parameters"]["keywords"])){
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$seo["keywords"] = $routerConfig["seo"]["keywords"] . ", " . htmlspecialchars($pageMetadata["parameters"]["keywords"]);
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}
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else{
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$seo["keywords"] = $routerConfig["seo"]["keywords"];
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}
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$seo["generator"] = $routerConfig["seo"]["generator"];
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$seo["robots"] = $routerConfig["seo"]["robots"];
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$seo_stuff = "";
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foreach ($seo as $key => $value){
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$seo_stuff .= "<meta name='$key' content='$value'>\n";
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}
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$out = $skeleton;
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$out = str_replace("__TEMPLATE__NAV__", $navigation, $out);
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$out = str_replace("__TEMPLATE__PAGE__", $page, $out);
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$out = str_replace("__TEMPLATE__FOOTER__", $footer, $out);
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$out = str_replace("__TEMPLATE__DYNAMIC__SCRIPT__", $dynamic_script, $out);
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$out = str_replace("__TEMPLATE__DYNAMIC__STYLE__", $dynamic_style, $out);
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$out = str_replace("__TEMPLATE_SEO_STUFF__", $seo_stuff, $out);
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if($routerConfig["inlining"]) {
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require_once "lib/inliner.php";
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$out = inlineLocalStylesFromHref($out);
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$out = inlineScriptFromSrc($out);
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}
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return str_replace("__TEMPLATE_PAGE_TITLE__", $page_title, $out);
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}
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/**
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* Provides an API interface to get page details including content and meta-information for routing purposes.
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* This is what enables the page to never refresh.
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*
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* @param string $page_name The name of the page.
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* @param string $site_name The name of the site.
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* @return array Returns an array with status, page content, location URL, and title for the requested page.
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*/
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function getPageEndpoint(string $page_name, string $site_name) :array
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{
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$page_location = "/" . $site_name . "/" . $page_name;
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$page_tmp = renderPage($page_name, $site_name);
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return [
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"Status" => "Success",
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"Page" => $page_tmp["PageContent"],
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"PageLocation" => $page_location,
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"PageTitle" => $page_tmp["PageTitle"],
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];
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} |