From 230b2ed9595c113f03ffb26c6394cd47b9014fd5 Mon Sep 17 00:00:00 2001
From: Nick Chambers <uplime@spookyinternet.com>
Date: Mon, 24 Oct 2022 05:23:52 -0500
Subject: [PATCH] Add a TTL to the directory cache

---
 dotlib/cattle.sh | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/dotlib/cattle.sh b/dotlib/cattle.sh
index cc2dac0..54fa596 100644
--- a/dotlib/cattle.sh
+++ b/dotlib/cattle.sh
@@ -34,11 +34,20 @@ reaper_pid=$! PROMPT_COMMAND+=(ping-timer)
 trap slay-reaper EXIT
 
 if [[ -f /tmp/iterm2-prev-dir.txt ]]; then
-  dir=$(</tmp/iterm2-prev-dir.txt)
+  cur_time=$(date +%s)
+  last_mod=$(stat -f%c /tmp/iterm2-prev-dir.txt)
 
-  if [[ -d $dir ]]; then
-    command cd "$dir"
+  if (( cur_time - last_mod > 1200 )); then
+    rm -f /tmp/iterm2-prev-dir.txt
+  else
+    dir=$(</tmp/iterm2-prev-dir.txt)
+
+    if [[ -d $dir ]]; then
+      command cd "$dir"
+    fi
+
+    unset dir
   fi
 
-  unset dir
+  unset cur_time last_mod
 fi