#!/bin/bash

set -e -o pipefail

info() {
    [ "$#" -gt 0 ] && echo -e "\033[1m>>> $*\033[0m" >&2
}

for i in *.json; do
    [ -f "$i" ] || continue
    vol_name=${i%.json}
    archive=$vol_name.tar.zst
    info "Recovering \"$vol_name\" from \"$archive\""

    label_args=()
    readarray -t labels < <(jq -r '.[0].Labels | to_entries | .[] | .key + "=" + .value' "$i")
    for label in "${labels[@]}"; do
        label_args+=(--label "$label")
    done

    set -x
    docker volume create "${label_args[@]}" "$vol_name"
    docker run --rm -v "$vol_name":/vol -v "$(readlink -f "$archive")":/vol.tar.zst:ro \
        localhost/archiver bsdtar -C /vol --numeric-owner -xf /vol.tar.zst
    set +x
done