From 04bc0154c1209b9a1dede09795a0b145cfa58a42 Mon Sep 17 00:00:00 2001
From: Andrey Nering <andreynering@users.noreply.github.com>
Date: Thu, 30 Oct 2025 15:32:35 -0300
Subject: [PATCH] fix(ux): fix crush logo flicker on window resizes (#1338)

---
 internal/tui/components/logo/logo.go |  5 ++---
 internal/tui/components/logo/rand.go | 24 ++++++++++++++++++++++++
 2 files changed, 26 insertions(+), 3 deletions(-)
 create mode 100644 internal/tui/components/logo/rand.go

diff --git a/internal/tui/components/logo/logo.go b/internal/tui/components/logo/logo.go
index c5902477b944602bd9b70398541631b3362b2e5f..6d1fbe5c69b908c27f3819011a02054d9b940452 100644
--- a/internal/tui/components/logo/logo.go
+++ b/internal/tui/components/logo/logo.go
@@ -4,7 +4,6 @@ package logo
 import (
 	"fmt"
 	"image/color"
-	"math/rand/v2"
 	"strings"
 
 	"github.com/MakeNowJust/heredoc"
@@ -53,7 +52,7 @@ func Render(version string, compact bool, o Opts) string {
 	}
 	stretchIndex := -1 // -1 means no stretching.
 	if !compact {
-		stretchIndex = rand.IntN(len(letterforms))
+		stretchIndex = cachedRandN(len(letterforms))
 	}
 
 	crush := renderWord(spacing, stretchIndex, letterforms...)
@@ -337,7 +336,7 @@ func stretchLetterformPart(s string, p letterformProps) string {
 	}
 	n := p.width
 	if p.stretch {
-		n = rand.IntN(p.maxStretch-p.minStretch) + p.minStretch //nolint:gosec
+		n = cachedRandN(p.maxStretch-p.minStretch) + p.minStretch //nolint:gosec
 	}
 	parts := make([]string, n)
 	for i := range parts {
diff --git a/internal/tui/components/logo/rand.go b/internal/tui/components/logo/rand.go
new file mode 100644
index 0000000000000000000000000000000000000000..cf79487e23825b468c98a0f27bbc8dbfbb1a7081
--- /dev/null
+++ b/internal/tui/components/logo/rand.go
@@ -0,0 +1,24 @@
+package logo
+
+import (
+	"math/rand/v2"
+	"sync"
+)
+
+var (
+	randCaches   = make(map[int]int)
+	randCachesMu sync.Mutex
+)
+
+func cachedRandN(n int) int {
+	randCachesMu.Lock()
+	defer randCachesMu.Unlock()
+
+	if n, ok := randCaches[n]; ok {
+		return n
+	}
+
+	r := rand.IntN(n)
+	randCaches[n] = r
+	return r
+}