brew-cleanup

#! /usr/bin/env zsh

brew-cleanup () {
    requires brew

    print -- "\n🧹 $fg_bold[white]Cellar cleanup duties coming up!$reset_color 🧼"

    local brew_cachedir
    brew_cachedir="$(brew --cache)"
    local downloaddir="$brew_cachedir/downloads"
    local caskdir="$brew_cachedir/Cask"

    local formulaes=("$downloaddir"/*(N))
    local casks=("$caskdir"/*(N))
    local symlinks=("$brew_cachedir"/*(@N))

    # print "Removing unused formulae..." && brew leaves -p | parallel brew uninstall
    print -x 2 "\t* Removing unused formulae..." && brew autoremove
    print -x 2 "\t* Removing lockfiles and outdated downloads..." && brew cleanup -s

    print -x 2 "\t* Cleaning $brew_cachedir..."
    # if the number of formulaes is not 0, then remove them
    # see: https://unix.stackexchange.com/a/313187/402599
    if (($#formulaes)); then
        print -x 4 "\t* Removing formulae installers in $downloaddir" && rm -- "${formulaes[@]}"
    fi

    if (($#casks)); then
        print -x 4 "\t* Removing cask installers in $caskdir" && rm -- "${casks[@]}"
    fi

    if (($#symlinks)); then
        print -x 4 "\t* Removing symlinks in $brew_cachedir" && rm -- "${symlinks[@]}"
    fi

    local bundlefile="${HOMEBREW_BUNDLE_FILE:-"$HOME/.config/Brewfile"}"
    print -x 2 "\t* Dump formulae and casks to $(basename "${bundlefile}")..."
    [ -s "${bundlefile}" ] && mv "${bundlefile}" "${bundlefile}.bak"
    brew bundle dump --describe --file="${bundlefile}"
}

brew-cleanup