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

command_name="${1:-build}"
package_dir="${APKBUILD_DIR:-/work/packaging/alpine/local/seaweedfs}"
repo_name="${ALPINE_REPO_NAME:-local}"
arch="${ALPINE_ARCH:-x86_64}"

export CARCH="${CARCH:-$arch}"
export PACKAGER="${PACKAGER:-Joachim Schlöffel <me@joachim-schloeffel.com>}"
if [[ -n "${PACKAGER_PRIVKEY:-}" ]]; then
  export PACKAGER_PRIVKEY
fi

git config --global --add safe.directory /work
mkdir -p /home/builder/.abuild /home/builder/packages "${package_dir}"

if [[ -n "${PACKAGER_PRIVKEY:-}" && ! -f "${PACKAGER_PRIVKEY}" ]]; then
  abuild-keygen -a -n
elif ! compgen -G "/home/builder/.abuild/*.rsa" > /dev/null; then
  abuild-keygen -a -n
fi

if [[ -z "${PACKAGER_PRIVKEY:-}" && -f /home/builder/.abuild/abuild.conf ]]; then
  # shellcheck source=/dev/null
  . /home/builder/.abuild/abuild.conf
fi
if [[ -n "${PACKAGER_PRIVKEY:-}" ]]; then
  export PACKAGER_PRIVKEY
fi

if [[ -n "${PACKAGER_PRIVKEY:-}" && -f "${PACKAGER_PRIVKEY}.pub" ]]; then
  doas cp "${PACKAGER_PRIVKEY}.pub" /etc/apk/keys/
elif compgen -G "/home/builder/.abuild/*.rsa.pub" > /dev/null; then
  doas cp /home/builder/.abuild/*.rsa.pub /etc/apk/keys/
fi

case "${command_name}" in
  build)
    cd "${package_dir}"
    abuild -r
    mkdir -p "/home/builder/packages/${repo_name}/${arch}"
    if [[ -n "${PACKAGER_PRIVKEY:-}" && -f "${PACKAGER_PRIVKEY}.pub" ]]; then
      cp "${PACKAGER_PRIVKEY}.pub" "/home/builder/packages/${repo_name}/${arch}/"
    elif compgen -G "/home/builder/.abuild/*.rsa.pub" > /dev/null; then
      cp /home/builder/.abuild/*.rsa.pub "/home/builder/packages/${repo_name}/${arch}/"
    fi
    ;;
  checksum)
    cd "${package_dir}"
    abuild checksum
    ;;
  lint)
    cd "${package_dir}"
    apkbuild-lint APKBUILD
    ;;
  shell)
    cd "${package_dir}"
    exec bash
    ;;
  *)
    printf 'unknown command: %s\n' "${command_name}" >&2
    printf 'usage: %s [build|checksum|lint|shell]\n' "$0" >&2
    exit 2
    ;;
esac