#!/usr/bin/env bash

function targz() {

  DNOW=$( date '+%F-%H-%M')


        local tmpFile="${@%/}-${DNOW}.tar";

tar -cvf "${tmpFile}" --exclude-vcs-ignores --exclude-vcs --exclude-backups --exclude-caches --exclude=".DS_Store" --exclude="node_modules" --exclude=".idea"  "${@}" || return 1;

        size=$(
                stat -f"%z" "${tmpFile}" 2> /dev/null; # macOS `stat`
                stat -c"%s" "${tmpFile}" 2> /dev/null;  # GNU `stat`
        );

        local cmd="";
        if (( size < 52428800 )) && hash zopfli 2> /dev/null; then
                # the .tar file is smaller than 50 MB and Zopfli is available; use it
                cmd="zopfli";
        else
                if hash pigz 2> /dev/null; then
                        cmd="pigz";
                else
                        cmd="gzip";
                fi;
        fi;

        echo "Compressing .tar ($((size / 1000)) kB) using \`${cmd}\`…";
        "${cmd}" -v "${tmpFile}" || return 1;
        [ -f "${tmpFile}" ] && rm "${tmpFile}";

        zippedSize=$(
                stat -f"%z" "${tmpFile}.gz" 2> /dev/null; # macOS `stat`
                stat -c"%s" "${tmpFile}.gz" 2> /dev/null; # GNU `stat`
        );

        echo "${tmpFile}.gz ($((zippedSize / 1000)) kB) created successfully.";

}

targz db/menu.db