setup-exercism

#!/usr/bin/env bash

set -euo pipefail

declare -r name="exercism"
declare -r repo="exercism/cli"

move() {
  local -r src="$1"
  local -r dest="$2"
  local -r dest_dir="$(dirname "$dest")"
  if [ ! -d "${dest_dir}" ]; then
    mkdir -p "${dest_dir}"
  fi
  mv "${src}" "${dest}"
}

setup_for_darwin() {
  echo 'brew "exercism"' | brew bundle --no-lock --file=-
}

setup_for_debian() {
  local -r prefix_path="${HOME}/.local"

  local temp_dir
  temp_dir="$(mktemp --directory /tmp/${name}--XXXXXXXXX)"

  cd "${temp_dir}"

  local pattern="*linux-x86_64.tar.gz"
  if test "$(uname -m)" = "aarch64"; then
    echo "unsupported arch"
    exit 1
  fi

  echo "Downloading archive..."
  gh release download --repo "${repo}" --pattern "${pattern}"

  echo "Extracting archive..."
  tar -xvzf "${temp_dir}"/*.tar.gz

  echo "Setting up: ${name}"
  move ./${name} "${prefix_path}/bin/${name}"

  echo "Cleaning up..."
  rm -rf "${temp_dir}"

  echo "Done!"
}

case "${OSTYPE}" in
  darwin*)
    setup_for_darwin;;
  linux*)
    setup_for_debian;;
  *)
    echo "Unknown OS!"
    exit 1;;
esac