#!/usr/bin/env sh

######################################################################
# @author      : Garhve (garhve@gmail.com)
# @file        : decrypt
# @created     : Wednesday Jan 10, 2024 01:09:07 CST
#
# @description : decrypt files that encrypt by gpg
######################################################################

for file in $@
do
    # get suffix
    suffix=$(echo "$file" | rev | cut -d '.' -f1 | rev)
    # get no suffix name
    f_no_suffix="${file%.*}"

    # check either name is ending with gpg or a*
    if [ $suffix = "gpg" ]; then
        # if end with gpg, decrypt directly
        gpg --output "${f_no_suffix}" --decrypt "$file"

        tar zxvf "${f_no_suffix}" && rm $f_no_suffix
    else
        # else join the parts before decrypt
        cat ${f_no_suffix}.* > "$f_no_suffix"

        # get name without gpg suffix
        f_no_gpg="${f_no_suffix%.*}"
        gpg --output "${f_no_gpg}" --decrypt "$f_no_suffix"

        tar zxvf "$f_no_gpg" && rm $f_no_gpg $f_no_suffix
    fi
done