#!/usr/bin/env bash -e

# Build tools on Mac OS X host and in all vms

MAKE_TASK='all -j'

filters=()
for arg in "$@"; do
  if [[ "$arg" =~ ^([A-Z_]+)=(.*)$ ]]; then
    eval "$(printf %q=%q "${BASH_REMATCH[1]}" "${BASH_REMATCH[2]}")"
  else
    filters+=($arg)
  fi
done
filters=$(IFS='|'; echo "${filters[*]}")

passes-filter() {
  [[ '' = "$filters" ]] || [[ "$1" =~ $filters ]]
}

header() {
  printf '\033[1;7m######## %s ########\033[0m\n' "$1"
}

if [[ $(uname -s) != 'Darwin' ]]; then
  echo 'expected to run on Mac OS X'
  exit 1
fi

make download-dependencies

for arch in x86_64; do
  platform="darwin-$arch"
  passes-filter "$platform" || continue
  header "$platform"

  build_dir=~_image_optim/pack

  mkdir -p "vendor/$platform"

  rsync -aR --del Makefile checksums.mk download patches "$build_dir"

  sudo -u _image_optim --set-home bash -exc "
    mkdir -p '$build_dir'
    cd '$build_dir'

    make $MAKE_TASK ARCH=$arch
  "

  rsync -aR --del "$build_dir/./vendor/$platform" .
done

if command -v docker &> /dev/null; then
  container_tool="docker"
elif command -v podman &> /dev/null; then
  container_tool="podman"
else
  echo "neither docker nor podman found"
  exit 1
fi

container_build() {
  vm=$1
  image=$2

  passes-filter "$vm" || return 0
  header "$vm"

  container_name="image_optim_pack-build-$vm"
  workdir=/pack

  if [[ -z "$NO_UP" ]]; then
    status=$("$container_tool" inspect --format '{{.State.Status}}' "$container_name" 2>/dev/null || true)

    if [[ "$status" == "" ]]; then
      mount="./_path_:$workdir/_path_"

      "$container_tool" \
        container create \
        --name="$container_name" \
        --stop-signal SIGHUP \
        -it \
        -v "${mount//_path_/}:ro" \
        -v "${mount//_path_/build/$vm}" \
        -v "${mount//_path_/vendor/$vm}" \
        --workdir "$workdir" \
        "$image"

      "$container_tool" container start "$container_name"

      "$container_tool" exec -it "$container_name" bash -exc "
        apt-get update
        apt-get -y install make gcc g++ chrpath perl pkg-config autoconf automake libtool nasm cmake patch
      "
    fi

    if [[ "$status" = @(created|exited) ]]; then
      "$container_tool" container start "$container_name"
    fi

    if [[ "$status" = @(created|exited|running) ]]; then
      "$container_tool" exec -it "$container_name" bash -exc "
        apt-get update
        apt-get -y dist-upgrade
        rustup update
      "
    fi

    if ! [[ "$status" = @(|created|exited|running) ]]; then
      echo "unexpected status $status"
      exit 1
    fi
  fi

  "$container_tool" exec -it "$container_name" bash -exc "
    make $MAKE_TASK
  "

  [[ -n "$NO_HALT" ]] || "$container_tool" container stop "$container_name"
}

container_build linux-x86_64 rust:slim-buster