#!/usr/bin/env bash

container=${1}

meta() {
   local container=$1
   local file="${PWD}/${container}.txt"
   local META=" "
   cat /dev/null > "${file}"

   while [ -n "${META}" ]; do
       local marker="$(tail -n 1 ${file})"
       META="$(rack files object list --container "${container}" --fields Name --marker "${marker}" | tail -n +2)"
       echo "${META}" >> "${file}"
   done

   local count="$(cat "${file}" | sort -u | wc -l)"
   echo "Found ${count} objects in ${container}"
}

download_objects() {
  OIFS="$IFS"
  IFS=$'\n'

  for object in $(cat "${container}.txt"); do
    echo "Downloading ${object} from ${container}"
    path="assets/${container}"

    if [ ! -f "${path}/${object}" ]
    then
      mkdir -p $(dirname "${path}/${object}")
      rack files object download --container ${container} --name "${object}" > "${path}/${object}"
    fi
  done

  IFS="$OIFS"
}

meta "${container}"
download_objects "${container}"