From f3a6500d9bf84fefb77c4b5c53c4644178b79fe5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?s=C3=B8renpeter?= <sp@darch.dk>
Date: Sun, 17 Mar 2024 01:01:16 +0100
Subject: [PATCH] Webmentions now working

---
 views/new_twt.php             | 38 ++++++++++++++++++++++++++++-----
 views/webmention_endpoint.php | 40 +++++++++++++++++++++++++----------
 2 files changed, 62 insertions(+), 16 deletions(-)

diff --git a/views/new_twt.php b/views/new_twt.php
index 80260bb..db48d3c 100644
--- a/views/new_twt.php
+++ b/views/new_twt.php
@@ -65,7 +65,7 @@ if (isset($_POST['submit'])) {
 	$datetime = date('Y-m-d\TH:i:sp'); // abracting to be used for webmentions
 	$twt = "\n" . $datetime . "\t" .$new_post; // NB: only works with PHP 8
 
-	// TODO: Turn off append at top?!
+	// TODO: Delete?
 	/*if (strpos($contents, NEW_TWT_MARKER) !== false) {
 		// Add the previous marker
 		// Take note that doesn't not work if twtxt file has CRLF line ending
@@ -80,15 +80,43 @@ if (isset($_POST['submit'])) {
 	// Append twt at the end of file
 	$contents .= $twt;
 	
-
-	// TODO: Add error handling if write to the file fails
+// TODO: Add error handling if write to the file fails
 	// For example due to permissions problems
 	// https://www.w3docs.com/snippets/php/how-can-i-handle-the-warning-of-file-get-contents-function-in-php.html
-	$file_write_result = file_put_contents($txt_file_path, $contents);
+
+	$file_write_result = file_put_contents($txt_file_path, $contents); 
+// TODO: replace with file_put_contents($logfile, $log, FILE_APPEND)  -- https://www.w3schools.com/php/func_filesystem_file_put_contents.asp
+
+	// Send webmentions (TODO: move to it own file?)
+	$new_mentions = getMentionsFromTwt($twt); 
+
+	foreach ($new_mentions as $mention) {
+		//print_r(getMentionsFromTwt($twt));
+		//echo $mention["nick"] . " from " . $mention["url"]."<br>";
+
+		// TODO: detect endpoint via $mention["url"]
+
+		$targets_webmention_endpoint = "https://darch.dk/timeline/webmention";
+
+		$your_url = "https://darch.dk/twtxt.txt#:~:text=".$datetime;
+		//$your_url = "https://darch.dk/twtxt.txt#:~:text=2024-03-16T20:38:31Z";
+		$target_url = $mention["url"];
+
+		$payload = "source=".$your_url."&target=".$target_url;
+
+		echo $payload;
+		
+		$curl = curl_init();
+		curl_setopt($curl, CURLOPT_URL, $targets_webmention_endpoint);
+		curl_setopt($curl, CURLOPT_POST, TRUE);
+		curl_setopt($curl, CURLOPT_POSTFIELDS, $payload);
+		$data = curl_exec($curl);
+		curl_close($curl);
+	}
 
 	//header('Refresh:0; url=.');
 	header("Location: refresh?url=".$public_txt_url); // Trying to fix issue with douple posting
-	exit; // 
+	exit;
 
 } else {
 	require_once("partials/base.php");
diff --git a/views/webmention_endpoint.php b/views/webmention_endpoint.php
index 321324a..26296a9 100644
--- a/views/webmention_endpoint.php
+++ b/views/webmention_endpoint.php
@@ -4,9 +4,9 @@
 # http://creativecommons.org/publicdomain/zero/1.0/
 
 if (!isset($_POST['source']) || !isset($_POST['target'])) {
-  print('Please send a propper webmention to this endpoint');
-  header($_SERVER['SERVER_PROTOCOL'] . ' 400 Bad Request');
-  exit;
+	print('Please send a propper webmention to this endpoint');
+	header($_SERVER['SERVER_PROTOCOL'] . ' 400 Bad Request');
+	exit;
 }
 
 ob_start();
@@ -19,17 +19,35 @@ $source = ob_get_contents();
 ob_end_clean();
 
 if (stristr($source, $_POST['target'])) {
-header($_SERVER['SERVER_PROTOCOL'] . ' 202 Accepted');
+	header($_SERVER['SERVER_PROTOCOL'] . ' 202 Accepted');
 
-# Now do something with $source e.g. parse it for h-entry and h-card and store what you find.
+	# Now do something with $source e.g. parse it for h-entry and h-card and store what you find.
 
-$logfile = './mentions.txt'; /* Make sure file is writeable */
+	// TODO: test if $datetime is to be found in $source
+	//		 		and then write the $twt to the $log
+
+	$datetime = explode( ":~:text=", $_POST['source'] );
+	$pattern = '/^'.$datetime[1].'\t(.*?)$/m';
+	preg_match($pattern, $source, $twt); // $twt[1] contains your line.
+
+	//preg_match('/^'.$datetime[1].'\t(.*?)$/m', $source, $twt);
+
+	$logfile = './mentions.txt'; /* Make sure file is writeable */
+
+	$log  = date("Y-m-d\TH:i:s\Z") . "\t" 
+		."You were mentioned in: ".$_POST['source']
+		."
" 
+		."> ". $twt[1]
+	    //."Recived webmention from ".$_POST['source']
+	    //." mentioning ".$_POST['target']
+	   	//." (IP: ".$_SERVER['REMOTE_ADDR'].")"
+	    .PHP_EOL;
+	 	file_put_contents($logfile, $log, FILE_APPEND);
+
+
+
+# Send email fork: https://gist.github.com/otherjoel/9301d985622f0d3d1a09
 
-$log  = date("Y-m-d\TH:i:s\Z") . "\t" 
-    ."Recived webmention from ".$_POST['source']
-    ." mentioning ".$_POST['target']
-   	." (IP: ".$_SERVER['REMOTE_ADDR'].")".PHP_EOL;
- 	file_put_contents($logfile, $log, FILE_APPEND);
 
 }
 else {