autoSystemCleaning

#!/usr/bin/env bash

# Equivalent of the maintenanceCleaning script but made for use as a systemd service
# and timer to run periodically

# Package cache cleaning implementation from @albertored11

# Assuming yay is run by user with UID 1000
admin="$(id -nu 1000)"

# Clean journal entries older than 4 weeks
usr/bin/journalctl --vacuum-time=4weeks

cachedir="/home/$admin/.cache/yay"
removed="$(comm -23 <(basename -a $(find $cachedir -mindepth 1 -maxdepth 1 -type d) | sort) <(pacman -Qqm) | xargs -r printf "$cachedir/%s\n")"

# Remove yay cache for foreign packages that are not installed anymore
rm -rf $removed

pkgcache="$(find $cachedir -mindepth 1 -maxdepth 1 -type d | xargs -r printf "-c %s\n")"

for pkgdir in "$cachedir"/*/; do

  pkgname=$(basename "$pkgdir")

  # Remove untracked files (e. g. source/build files) excepting package files and main source files for installed version if non-git package
  if [[ ! "$pkgname" =~ ^.*-git$ ]]; then

    pkgver="$(pacman -Q $pkgname | cut -d ' ' -f2 | cut -d '-' -f1 | cut -d ':' -f2)"

    cd "$pkgdir"
    rm -f $(git ls-files --others | grep -v -e '^.*\.pkg\.tar.*$' -e '^.*/$' -e "^.*$pkgver.*$" | xargs -r printf "$pkgdir/%s\n")

  fi

  rm -rf "$pkgdir"/src/

done

# Remove everything for uninstalled foreign packages and uninstalled native packages, keep two latest versions for installed packages
/usr/bin/paccache -qruk0 $pkgcache
/usr/bin/paccache -qruk0
/usr/bin/paccache -qrk2 -c /var/cache/pacman/pkg $pkgcache