From 166d0fbe2f0355d81669b5fde9c2a9bc576da88a Mon Sep 17 00:00:00 2001
From: Martin Fischer <martin@push-f.com>
Date: Sat, 8 Oct 2022 20:12:14 +0200
Subject: add workaround to expand signatures within <vote>

---
 Vote.php       | 21 +++++++++++++++++++++
 extension.json |  3 ++-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/Vote.php b/Vote.php
index 2eae79d..cbb1c62 100644
--- a/Vote.php
+++ b/Vote.php
@@ -8,6 +8,16 @@ class VoteHooks {
 		$parser->setHook( 'vote', [ self::class, 'renderVoteTag' ] );
 	}
 
+	public static function onParserPreSaveTransformComplete( Parser $parser, string &$text ) {
+		// workaround for https://phabricator.wikimedia.org/T319221
+		$sigText = $parser->getUserSig(RequestContext::getMain()->getUser());
+		$datetime = getFormattedTimestamp($parser);
+		$text = preg_replace('/(?<!<nowiki>)(?<!<pre>)~~~~/', "$sigText $datetime", $text);
+		// NOTE: this regex obviously matches false positives, however since
+		// it's quite uncommon for ~~~~ to occur in wiki pages this is deemed good enough
+		// until T319221 is addressed and this workaround is no longer necessary
+	}
+
 	// Render <vote>
 	public static function renderVoteTag( $input, array $args, Parser $parser, PPFrame $frame ) {
 
@@ -322,3 +332,14 @@ function formatError($error) {
 	// The CSS class is provided by MediaWiki.
 	return "<span class=error>$error</span>";
 }
+
+function getFormattedTimestamp($parser) {
+	// This function exists solely because of the onParserPreSaveTransformComplete workaround for https://phabricator.wikimedia.org/T319221.
+	// It is supposed to mirror the behavior of https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/core/+/refs/tags/1.38.4/includes/parser/Parser.php#4575.
+
+	$ts = $parser->mOptions->getTimestamp();
+	$timestamp = MWTimestamp::getLocalInstance( $ts );
+	$ts = $timestamp->format( 'YmdHis' );
+	$tzMsg = $timestamp->getTimezoneMessage()->inContentLanguage()->text();
+	return $parser->getContentLanguage()->timeanddate( $ts, false, false ) . " ($tzMsg)";
+}
diff --git a/extension.json b/extension.json
index 4cd2418..bdea38d 100644
--- a/extension.json
+++ b/extension.json
@@ -19,7 +19,8 @@
 		"InsertVote": "SpecialInsertVote"
 	},
 	"Hooks": {
-		"ParserFirstCallInit": "VoteHooks::onParserFirstCallInit"
+		"ParserFirstCallInit": "VoteHooks::onParserFirstCallInit",
+		"ParserPreSaveTransformComplete": "VoteHooks::onParserPreSaveTransformComplete"
 	},
 	"ResourceModules": {
 		"ext.vote-css": {
-- 
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