#!/usr/bin/env bash
set -euo pipefail

package_dir="${PACKAGE_DIR:-$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)}"
repo_root="${REPO_ROOT:-$(cd "${package_dir}/../../../.." && pwd)}"
pkgver="$(awk -F= '$1 == "pkgver" { print $2; exit }' "${package_dir}/APKBUILD")"
distfiles_dir="${repo_root}/.cache/apk-distfiles"
shards_cache_dir="${repo_root}/.cache/shards"
source_archive="${distfiles_dir}/lavinmq-${pkgver}.tar.gz"
shards_archive="${package_dir}/lavinmq-${pkgver}-shards.tar.gz"
assets_archive="${package_dir}/lavinmq-${pkgver}-assets.tar.gz"
tmpdir="$(mktemp -d)"
assets_dir="${tmpdir}/assets"

cleanup() {
  rm -rf "${tmpdir}"
}
trap cleanup EXIT

mkdir -p "${distfiles_dir}" "${shards_cache_dir}"
if [[ ! -f "${source_archive}" ]]; then
  curl --fail --location --retry 3 --silent --show-error \
    --output "${source_archive}" \
    "https://github.com/cloudamqp/lavinmq/archive/refs/tags/v${pkgver}.tar.gz"
fi

tar -xzf "${source_archive}" -C "${tmpdir}"
source_dir="${tmpdir}/lavinmq-${pkgver}"
if [[ ! -d "${source_dir}" ]]; then
  printf 'unexpected LavinMQ source archive layout: %s\n' "${source_archive}" >&2
  exit 1
fi

# shard.lock pins the Crystal dependencies.  `make js` fetches exactly the
# frontend assets declared by this upstream version's Makefile.
(
  cd "${source_dir}"
  SHARDS_CACHE_PATH="${shards_cache_dir}" shards install --production
  make js
)

tar --create --gzip --file "${shards_archive}" \
  --directory "${source_dir}" \
  --sort=name --mtime='UTC 1970-01-01' --owner=0 --group=0 --numeric-owner \
  lib
mkdir -p "${assets_dir}"
# The offline Makefile patch intentionally reads every asset from the root of
# .alpine-assets, including helpers.segment.js which upstream stores in chunks/.
find "${source_dir}/static/js/lib" -type f -exec cp -p {} "${assets_dir}/" \;
tar --create --gzip --file "${assets_archive}" \
  --directory "${assets_dir}" \
  --sort=name --mtime='UTC 1970-01-01' --owner=0 --group=0 --numeric-owner \
  .

printf 'Updated %s and %s\n' "${shards_archive##*/}" "${assets_archive##*/}"