exemples/scripts: pacman.sh: display number of pacman/aur updates available

examples/scripts/pacman.sh

@@ -0,0 +1,79 @@
+#!/usr/bin/env bash
+#
+# pacman.sh - display number of packages update available
+#             by default check every hour
+#
+# USAGE: pacman.sh
+#
+# TAGS:
+#  Name      Type    Return
+#  -------------------------------------------
+#  {pacman}  string  number of pacman packages
+#  {aur}     string  number of aur packages
+#  {pkg}     string  sum of both
+#
+# Exemple configuration:
+#  - script:
+#    path: /absolute/path/to/pacman.sh
+#    args: [] 
+#    content: { string: { text: " {pacman} + {aur} = {pkg}" } }
+
+
+declare interval no_update aur_helper pacman_num aur_num pkg_num
+
+# Error message in STDERR
+_err() {
+  printf -- '%s\n' "[$(date +'%Y-%m-%d %H:%M:%S')]: $*" >&2
+}
+
+
+while true; do
+  # Change interval
+  # NUMBER[SUFFIXE]
+  # Possible suffix:
+  #  "s" seconds / "m" minutes / "h" hours / "d" days 
+  interval="1h"
+  
+  # Change the message you want when there is no update
+  # Leave empty if you want a 0 instead of a string 
+  # (e.g. no_update="")
+  no_update="no update"
+  
+  # Change your aur manager
+  aur_helper="paru"
+
+  # Get number of packages to update
+  pacman_num=$(checkupdates | wc -l)
+
+  if ! hash "${aur_helper}" >/dev/null 2>&1; then
+    _err "aur helper not found, change it in the script"
+  else
+    aur_num=$("${aur_helper}" -Qmu | wc -l)
+  fi
+  
+  pkg_num=$(( pacman_num + aur_num ))
+
+  # Only display one if there is no update and multiple tags set
+  if [[ "${pacman_num}" == 0 && "${aur_num}" == 0 ]]; then
+    pacman_num="${no_update:-$pacman_num}"
+    aur_num="${no_update:-$aur_num}"
+    pkg_num="${no_update:-$pkg_num}"
+
+    printf -- '%s\n' "pacman|string|"
+    printf -- '%s\n' "aur|string|"
+    printf -- '%s\n' "pkg|string|${pkg_num}"
+    printf -- '%s\n' ""
+  else 
+    printf -- '%s\n' "pacman|string|${pacman_num}"
+    printf -- '%s\n' "aur|string|${aur_num}"
+    printf -- '%s\n' "pkg|string|${pkg_num}"
+    printf -- '%s\n' ""
+  fi
+
+  sleep "${interval}"
+
+done
+
+unset -v interval no_update aur_helper pacman_num aur_num pkg_num
+unset -f _err
+