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https://github.com/sorenpeter/timeline.git
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feat(refresh): implement if-modified-since detection to only refresh newer content
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eapl.mx
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ee7e6558b2
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1 changed files with 106 additions and 49 deletions
131
libs/twtxt.php
131
libs/twtxt.php
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@ -1,4 +1,5 @@
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<?php
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declare(strict_types=1);
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$config = parse_ini_file('private/config.ini');
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@ -9,7 +10,8 @@ if ($config['debug_mode']) {
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error_reporting(E_ALL);
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}
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class TwtxtFile {
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class TwtxtFile
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{
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public $mainURL = ''; // First found URL
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public $URLs = [];
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public $nick = '';
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@ -22,7 +24,8 @@ class TwtxtFile {
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public $twts = [];
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}
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class Twt {
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class Twt
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{
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public $originalTwtStr;
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public $hash;
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public $timestamp;
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@ -64,7 +67,8 @@ curl_setopt($curl, CURLOPT_SSLVERSION, 4);
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* found, the function returns the value of the key as a string after trimming any whitespace. If no
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* match is found, the function returns null.
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*/
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function getSingleParameter($keyToFind, $string) {
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function getSingleParameter($keyToFind, $string)
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{
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if (!str_contains($string, $keyToFind)) {
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return null;
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}
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@ -82,7 +86,8 @@ function getSingleParameter($keyToFind, $string) {
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return null;
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}
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function getDoubleParameter($keywordToFind, $string) {
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function getDoubleParameter($keywordToFind, $string)
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{
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// Returns string or null
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$pattern = '/#\s*' . preg_quote($keywordToFind, '/') . '\s*=\s*(\S+)\s*(\S+)/';
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// Matches "# <keyword> = <value> <value>"
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@ -96,7 +101,8 @@ function getDoubleParameter($keywordToFind, $string) {
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return null;
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}
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function getReplyHashFromTwt(string $twtString): string {
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function getReplyHashFromTwt(string $twtString): string
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{
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// Extract the text between parentheses using regular expressions
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$pattern = '/\(#([^\)]+)\)/'; // Matches "(#<text>)"
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preg_match($pattern, $twtString, $matches);
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@ -109,7 +115,8 @@ function getReplyHashFromTwt(string $twtString): string {
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return '';
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}
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function getImagesFromTwt(string $twtString) {
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function getImagesFromTwt(string $twtString)
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{
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$pattern = '/(<img[^>]+>)/i';
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preg_match_all($pattern, $twtString, $matches, PREG_SET_ORDER);
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@ -122,7 +129,8 @@ function getImagesFromTwt(string $twtString) {
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return $result;
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}
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function getTagsFromTwt(string $twtString) {
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function getTagsFromTwt(string $twtString)
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{
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//$pattern = '/(?<!\()\B#\w+(?!\))/iu';
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//$pattern = '/(?<=\B)#(\w+)/';
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$pattern = '/(?<=\B)#([\p{L}\p{N}_]+)/u';
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@ -144,7 +152,8 @@ function getTagsFromTwt(string $twtString) {
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return $result;
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}
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function getMentionsFromTwt(string $twtString) {
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function getMentionsFromTwt(string $twtString)
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{
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$pattern = '/@<([^>]+)\s([^>]+)>/'; // Matches "@<nick url>"
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preg_match_all($pattern, $twtString, $matches, PREG_SET_ORDER);
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@ -159,7 +168,8 @@ function getMentionsFromTwt(string $twtString) {
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return $result;
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}
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function replaceMentionsFromTwt(string $twtString): string {
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function replaceMentionsFromTwt(string $twtString): string
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{
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// Example input: 'Hello @<eapl.mx https://eapl.mx/twtxt.txt>, how are you? @<nick https://server.com/something/twtxt.txt>';
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// Example output: Hello <a href="?url=https://eapl.mx/twtxt.txt">@eapl.mx@eapl.mx/twtxt.txt</a>, how are you? <a href="?url=https://server.com/something/twtxt.txt">@nick@server.com/something/twtxt.txt</a>
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@ -178,7 +188,8 @@ function replaceMentionsFromTwt(string $twtString): string {
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//return preg_replace($pattern,'<a href="$2">@$1</a>',$twtString);
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}
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function replaceLinksFromTwt(string $twtString) {
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function replaceLinksFromTwt(string $twtString)
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{
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// TODO: Make this NOT match with `inline code` to avoid links in code-snippets
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// 1. Look into how yarnd handles this
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@ -194,7 +205,8 @@ function replaceLinksFromTwt(string $twtString) {
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return $result;
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}
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function replaceMarkdownLinksFromTwt(string $twtString) {
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function replaceMarkdownLinksFromTwt(string $twtString)
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{
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$pattern = '/\[([^\]]+)\]\(([^)]+)\)/';
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$replacement = '<a href="$2">$1</a>';
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@ -203,7 +215,8 @@ function replaceMarkdownLinksFromTwt(string $twtString) {
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return $result;
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}
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function replaceImagesFromTwt(string $twtString) {
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function replaceImagesFromTwt(string $twtString)
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{
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$pattern = '/!\[(.*?)\]\((.*?)\)/';
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//$replacement = '<img src="$2" alt="$1">';
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$replacement = '<a href="$2"><img src="$2" alt="$1"></a>';
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@ -212,7 +225,8 @@ function replaceImagesFromTwt(string $twtString) {
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return $result;
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}
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function replaceTagsFromTwt(string $twtString) {
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function replaceTagsFromTwt(string $twtString)
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{
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//$pattern = '/#(\w+)?/';
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//$pattern = '/(?<=\s)#(\w+)/';
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$pattern = '/(?<=\B)#([\p{L}\p{N}_]+)/u';
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@ -224,7 +238,8 @@ function replaceTagsFromTwt(string $twtString) {
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return $result;
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}
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function embedYoutubeFromTwt(string $twtString) {
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function embedYoutubeFromTwt(string $twtString)
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{
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// original regex source: https://gist.github.com/afeld/1254889#gistcomment-1253992
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$pattern = '/(?:youtube(?:-nocookie)?\.com\/(?:[^\/\n\s]+\/\S+\/|(?:v|e(?:mbed)?)\/|\S*?[?&]v=)|youtu\.be\/)([a-zA-Z0-9_-]{11})/mi';
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@ -244,7 +259,8 @@ function embedYoutubeFromTwt(string $twtString) {
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}
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function getTimeElapsedString($timestamp, $full = false) {
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function getTimeElapsedString($timestamp, $full = false)
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{
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$now = new DateTime;
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$ago = new DateTime;
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$ago->setTimestamp($timestamp);
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@ -290,7 +306,8 @@ function getTimeElapsedString($timestamp, $full = false) {
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return $string ? implode(', ', $string) . " $agoText" : 'just now';
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}
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function getCachedFileContentsOrUpdate($fileURL, $cacheDurationSecs = 15) {
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function getCachedFileContentsOrUpdate($fileURL, $cacheDurationSecs = 15)
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{
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# TODO: Process the Warning
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# Warning: file_get_contents(https://eapl.mx/twtxt.net):
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# failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found in
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@ -309,7 +326,8 @@ function getCachedFileContentsOrUpdate($fileURL, $cacheDurationSecs = 15) {
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return $contents;
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}
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function getCachedFileContents($filePath) {
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function getCachedFileContents($filePath)
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{
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$cacheFile = getCachedFileName($filePath);
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// Check if cache file exists and it's not expired
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@ -320,31 +338,65 @@ function getCachedFileContents($filePath) {
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return null;
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}
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function updateCachedFile($filePath, $cacheDurationSecs = 15) {
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function updateCachedFile($filePath)
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{
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$cacheFilePath = getCachedFileName($filePath);
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# TODO: Report down URLs and stop loading them after a few tries
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// File doesn't exist in cache or has expired, so fetch and cache it
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// TODO: Seems it's not working right!
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$fileDoesntExist = !file_exists($cacheFilePath);
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$fileIsOld = false;
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if (!$fileDoesntExist) {
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$fileIsOld = !((time() - filemtime($cacheFilePath)) < $cacheDurationSecs);
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}
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# Get the last modification time of the local file
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$lastModifiedTime = file_exists($cacheFilePath) ? filemtime($cacheFilePath) : false;
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$lastModifiedHeader = $lastModifiedTime ? gmdate('D, d M Y H:i:s', $lastModifiedTime) . ' GMT' : null;
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if ($fileDoesntExist || $fileIsOld) {
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#echo "Loading Cached file $cacheFilePath<br>\n";
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$contents = @file_get_contents($filePath);
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# echo "lastModifiedHeader: $lastModifiedHeader<br>\n";
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if ($contents === false) {
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// File loaded with errors, skip saving it
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# Set up the HTTP context with the 'If-Modified-Since' header
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$options = [
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'http' => [
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'method' => 'GET',
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'header' => $lastModifiedHeader ? "If-Modified-Since: $lastModifiedHeader\r\n" : '',
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]
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];
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$context = stream_context_create($options);
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$response = @file_get_contents($filePath, false, $context);
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# Check if HTTP headers are available, usually when the server is available
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if (!isset($http_response_header)) {
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# echo "Failed to fetch headers. No HTTP request was made.\n";
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return;
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}
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file_put_contents($cacheFilePath, $contents);
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if ($http_response_header) {
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# var_dump($http_response_header);
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foreach ($http_response_header as $header) {
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# Look for the Last-Modified header
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if (preg_match('/^Last-Modified:\s*(.+)$/i', $header, $matches)) {
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$dateString = $matches[1]; // Extracted date
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# echo "Extracted Date: $dateString\n";
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// Convert to Unix timestamp
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$lastModifiedTimestamp = strtotime($dateString);
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if ($lastModifiedTimestamp > $lastModifiedTime) {
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# echo "Remote file is newer. Load it!<br>\n";
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} else {
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# echo "Not modified since last request. No update needed.<br>\n";
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return;
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}
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}
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}
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}
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function getTwtsFromTwtxtString($url) {
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# Save the content if it was successfully retrieved
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if ($response !== false) {
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file_put_contents($cacheFilePath, $response);
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#echo "File updated successfully.\n";
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}
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}
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function getTwtsFromTwtxtString($url)
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{
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$fileContent = getCachedFileContents($url);
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if (is_null($fileContent)) {
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@ -493,7 +545,8 @@ function getTwtsFromTwtxtString($url) {
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return $twtxtData;
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}
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function insertFollowingURL($urlString) {
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function insertFollowingURL($urlString)
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{
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// Check if it's a valid URL
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// Retrieve the nickname, if didn't find a nick, ask for one
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@ -509,22 +562,26 @@ function insertFollowingURL($urlString) {
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echo $result;
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}
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function getCachedFileName($filePath) {
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function getCachedFileName($filePath)
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{
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return __DIR__ . '/../private/cache/' . hash('sha256', $filePath); // TODO: make better path
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}
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if (!function_exists('str_starts_with')) {
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function str_starts_with($haystack, $needle) {
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function str_starts_with($haystack, $needle)
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{
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return (string)$needle !== '' && strncmp($haystack, $needle, strlen($needle)) === 0;
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}
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}
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if (!function_exists('str_ends_with')) {
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function str_ends_with($haystack, $needle) {
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function str_ends_with($haystack, $needle)
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{
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return $needle !== '' && substr($haystack, -strlen($needle)) === (string)$needle;
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}
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}
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if (!function_exists('str_contains')) {
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function str_contains($haystack, $needle) {
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function str_contains($haystack, $needle)
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{
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return $needle !== '' && mb_strpos($haystack, $needle) !== false;
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}
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}
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