#!/bin/bash

base_dir=$(readlink -f "$(dirname "$0")")

depth=$1
shift

if [ ! -s "${base_dir}/.words.${depth}" ]; then

  urls=()

  for i in $(seq "${depth}"); do
    urls=(
      $(
        "${base_dir}/dive-into-wikipedia.sh" "${urls[@]}" \
          | sort -u
      )
    )
    echo $i >&2
  done

  printf '%s\n' "${urls[@]}" \
    | parallel -j0 -n1 "${base_dir}/remove-tags.sh" \
    | sort -u \
    | grep -vxF '' \
    > "${base_dir}/.words.${depth}"

fi

"${base_dir}/markov" "${base_dir}/.words.${depth}" "$@"