From bf10149cb1826a39098255c272b9a2cb07b6f607 Mon Sep 17 00:00:00 2001
From: tiennm99 <tiennm99@outlook.com>
Date: Thu, 6 Aug 2026 11:05:52 +0700
Subject: [PATCH] fix(wheelofnames): center spoiler winner with nbsp padding
 instead of leading dots

---
 internal/modules/misc/handlers_test.go        |  2 +-
 internal/modules/misc/wheelofnames_command.go | 22 ++++++++++++-------
 2 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/internal/modules/misc/handlers_test.go b/internal/modules/misc/handlers_test.go
index e69a142..2daf81e 100644
--- a/internal/modules/misc/handlers_test.go
+++ b/internal/modules/misc/handlers_test.go
@@ -168,7 +168,7 @@ func TestWheelOfNames_ResultCaptionTruncatesLongResult(t *testing.T) {
 func TestWheelOfNames_ResultCaptionPadsShortWinnerToLongestOption(t *testing.T) {
 	options := []string{"Bob", "Alexandria"}
 	got := wheelResultCaption(options, 0)
-	want := `Result: <span class="tg-spoiler">.......Bob</span>`
+	want := `Result: <span class="tg-spoiler">` + strings.Repeat(wheelCaptionPad, 3) + "Bob" + strings.Repeat(wheelCaptionPad, 4) + `</span>`
 	if got != want {
 		t.Fatalf("wheelResultCaption() = %q, want %q", got, want)
 	}
diff --git a/internal/modules/misc/wheelofnames_command.go b/internal/modules/misc/wheelofnames_command.go
index f49f166..e1f488d 100644
--- a/internal/modules/misc/wheelofnames_command.go
+++ b/internal/modules/misc/wheelofnames_command.go
@@ -67,21 +67,27 @@ func wheelOfNamesCommand() modules.Command {
 const wheelUsage = "Usage: /wheelofnames <option,...>"
 
 func wheelResultCaption(options []string, winner int) string {
-	result := truncateWheelResultCaption(options[winner])
-	padding := wheelCaptionPadding(options, len([]rune(result)))
-	return `Result: <span class="tg-spoiler">` + html.EscapeString(padding+result) + `</span>`
+	result := padWheelResultCaption(options, truncateWheelResultCaption(options[winner]))
+	return `Result: <span class="tg-spoiler">` + html.EscapeString(result) + `</span>`
 }
 
-// wheelCaptionPadding returns leading dots so every option renders a
-// spoiler of equal length; otherwise the spoiler width reveals the winner.
-func wheelCaptionPadding(options []string, resultRunes int) string {
-	longest := resultRunes
+// Non-breaking space: regular spaces at the caption edges get trimmed by
+// Telegram, which would shrink the spoiler and reveal the winner's length.
+const wheelCaptionPad = "\u00a0"
+
+// padWheelResultCaption centers shorter winners with blank padding so every
+// option renders a spoiler of equal length; otherwise the spoiler width
+// reveals the winner. The longest option is returned unpadded.
+func padWheelResultCaption(options []string, result string) string {
+	longest := len([]rune(result))
 	for _, option := range options {
 		if n := len([]rune(truncateWheelResultCaption(option))); n > longest {
 			longest = n
 		}
 	}
-	return strings.Repeat(".", longest-resultRunes)
+	missing := longest - len([]rune(result))
+	left := missing / 2
+	return strings.Repeat(wheelCaptionPad, left) + result + strings.Repeat(wheelCaptionPad, missing-left)
 }
 
 func truncateWheelResultCaption(result string) string {