#!/usr/bin/env bash

wd="$(realpath "$(dirname "$(realpath -s "$0")")/.tmp")"
git_url_prefix="https://git.zio.sh/zio/rootfs/raw/branch/main"
helpers_dir="$wd/helpers"
backup_script_path="$wd/sh.zio.backup"
bash_helper_path="$helpers_dir/bash.sh"

function die() {
    echo -e "\033[1;31mError: $@\033[0m"
    exit 255
}

function fetch() {
    url="$1"
    output="$2"
    curl -L -s -o "$output" "$url"
    [[ $? != 0 ]] && die "Unable to download '$url'"
}

[[ ! -w "$(dirname "$(realpath -s "$0")")" ]] && die "No write permissions in current directory"

mkdir -p "$wd"
mkdir -p "$helpers_dir"

fetch "$git_url_prefix/usr/local/bin/sh.zio.backup" "$backup_script_path"
fetch "$git_url_prefix/usr/local/libexec/zio/helpers/bash.sh" "$bash_helper_path"

chmod +x "$backup_script_path"
chmod +x "$bash_helper_path"

if [[ -n "$SUDO_USER" ]]; then
    chown -R "$SUDO_USER" "$wd"
fi

export ZIO_HELPERS_DIR="$helpers_dir"
/usr/bin/env bash "$backup_script_path" $@

rm -rf "$wd"