Make system-sleep-menu.sh more flexible

system-menu/system-sleep-menu.sh

@@ -1,6 +1,10 @@
 #!/usr/bin/env zsh
 
-pgrep swayidle && swayidle_state="Enabled" || swayidle_state="Disabled"
+local CACHE_PATH="${HOME}/.cache/system-sleep-menu"
+
+pgrep swayidle >/dev/null 2>&1 \
+    && swayidle_state="Enabled" \
+    || swayidle_state="Disabled"
 
 choice="$(fuzzel --index -d -p "Cur: ${swayidle_state} > " <<'EOF'
 Enable
@@ -12,9 +16,23 @@ EOF
 
 case "${choice}" in
     0)
-        swayidle -w &
+        if [[ "${swayidle_state}" == 'Disabled' ]]; then
+            local cmd_cache=(${(0)"$(<"${CACHE_PATH}")"})
+            (
+                set -x
+                cd "${cmd_cache[1]}"
+                eval "${cmd_cache[2]}" &
+            )
+        fi
         ;;
     1)
+        pgrep_output=(${(ps: :)"$(pgrep -fa swayidle)"})
+        if [[ "${swayidle_state}" = 'Enabled' ]]; then
+            local si_pid="${pgrep_output[1]}"
+            local si_pwd="$(readlink "/proc/${si_pid}/cwd")"
+            local si_cmd="${pgrep_output:1}"
+            printf '%s\0%s' "${si_pwd}" "${si_cmd}" >"${CACHE_PATH}"
             pkill swayidle
+        fi
         ;;
 esac