#! /usr/bin/env dash

# shellcheck source=/dev/null
SHELL_LIBRARY_VERSION="2.1.2" . %SHELL_LIBRARY_PATH

# Option '-f' disables pathname expansion which can be useful when $f, $fs, and
# $fx variables contain names with '*' or '?' characters. However, this option
# is used selectively within individual commands as it can be limiting at
# times.
set -f

# shellcheck disable=SC2269
f="$f"
# shellcheck disable=SC2269
fx="$fx"
# shellcheck disable=SC2269
fs="$fs"

archivers="$(tmp echo gzip xz 7z zip)"
archiver="$(awk '{for (i=1; i<=NF; i++) print $i}' "$archivers" | fzf)"

case "$archiver" in
"gzip")
    ext=tar.gz
    ;;
"xz")
    ext=tar.xz
    ;;
"7z")
    ext=7z
    ;;
"zip")
    ext=zip
    ;;
esac

prompt "Archive name: "
name=""
while [ -z "$name" ] || [ -e "$name" ]; do
    read -r name_base
    name="$name_base.$ext"
    if [ -e "$name" ]; then
        prompt "Archive already exists, overwrite [y|N]: "
        read -r ans

        if [ "$ans" = "y" ]; then
            break
        else
            prompt "Archive name: "
        fi
    fi
done

root="$(if [ "$(pwd)" = "/" ]; then pwd; else echo "$(pwd)/"; fi)"

# fx contains all selected file name separated by a newline
while read -r raw_file; do
    file="$(echo "$raw_file" | sed "s|$root||")"
    set -- "$@" "$file"
done <"$(tmp echo "$fx")"

case "$archiver" in
"gzip")
    tar --create --gzip -file="$name" "$@"
    ;;
"xz")
    tar --create --file="$name" "$@"
    xz --compress -9 --extreme --threads=0 "$name"
    ;;
"7z")
    7z a "$name" "$@"
    ;;
"zip")
    zip --symlinks -9 -r "$name" "$@"
    ;;
esac
# vim: ft=sh