#!/bin/sh

# build one package to test if modifications are ok (before opening a pull
# request in https://github.com/archlinux32/packages)
# package is built directly on a i486/i686/pentium4 host without any chroots

# shellcheck source=../lib/load-configuration
. "${0%/*}/../lib/load-configuration"

# TODO: remove hard-coded package suffixes

# shellcheck disable=SC2016
usage() {
  >&2 echo ''
  >&2 echo 'test-build-package <repository> <package>: build package for testing'
  >&2 echo ''
  >&2 echo 'possible options:'
  >&2 echo '  -h|--help:   Show this help and exit.'
  >&2 echo '  -a|--arch "i486" | "i686" | "pentium4"'
  >&2 echo '    Build locally for this architecture.'
  >&2 echo '  -b|--bootstrap'
  >&2 echo '    Publishes signed package to the bootstrap directory.'
  >&2 echo '  -H|--host <user>@<host>: host and user for bootstrapping'
  >&2 echo '  -D|--dir <dir>: bootstrapping directory'
  >&2 echo '    $arch and $repo are attached to this path.'
  >&2 echo '  -p|--port <SSH port>: the SSH port for bootstrapping.'
  >&2 echo '  -n|--nocheck:'
  >&2 echo '    Normally execute all checks and do all tests.'
  >&2 echo '    This switches off check() and all integrity checks.'
  >&2 echo '  -t|--tmpdir <dir>:'
  >&2 echo '    Specify tmpdir instead of using a random one, usually with -N'
  >&2 echo '  -N|--nobuild:'
  >&2 echo '    Assume packages have already been built, just upload them.'
  >&2 echo '  -s|--signkey:'
  >&2 echo '    Use explicit sign key instead of the one from the configuration.'
  [ -z "$1" ] && exit 1 || exit "$1"
}

eval set -- "$(
  getopt -o a:bhnNp:H:D:t:s: \
    --long arch \
    --long bootstrap \
    --long nocheck \
    --long nobuild \
    --long port \
    --long dir \
    --long host \
    --long tmpdir \
    --long signkey \
    --long help \
    -n "$(basename "$0")" -- "$@" || \
  echo usage
)"

arch=$(uname -m)
bootstrap=false
nocheck=false
nobuild=false
bootstrap_port=22
bootstrap_host=''
bootstrap_dir=''
tmp_dir=$(mktemp -d "${work_dir}/tmp.XXXXXX")
signkey="${package_key}"
while true
do
  case "$1" in
    -a|--arch)
      shift
      arch="$1"
    ;;
    -b|--bootstrap)
      bootstrap=true
    ;;
    -H|--host)
      shift
      bootstrap_host="$1"
    ;;
    -D|--dir)
      shift
      bootstrap_dir="$1"
    ;;
    -n|--nocheck)
      nocheck=true
    ;;
    -N|--nobuild)
      nobuild=true
    ;;
    -p|--port)
      shift
      bootstrap_port="$1"
    ;;
    -t|--tmpdir)
      shift
      tmp_dir="$1"
    ;;
    -s|--signkey)
      shift
      signkey="$1"
    ;;
    -h|--help)
      usage 0
    ;;
    --)
      shift
      break
    ;;
    *)
      >&2 echo 'Whoops, forgot to implement option "'"$1"'" internally.'
      exit 42
    ;;
  esac
  shift
done

if [ $# -ne 2 ]; then
  >&2 echo 'Too few or too many arguments. Expecting exactly a repository and a package name of the package to test.'
  usage
fi

if [ "$arch" != "any" ] && [ "$arch" != "i486" ] && [ "$arch" != "i686" ] && [ "$arch" != "pentium4" ]; then
  >&2 echo "Illegal architecture '$arch', epxecting one of 'any', 'i486', 'i686' or 'pentium4'."
  usage
fi

if ${bootstrap}; then
  if [ -z "${bootstrap_host}" ]; then
    >&2 echo -- '-b option requires a bootstrapping host to be set with -H'
    usage
  fi
  if [ -z "${bootstrap_dir}" ]; then
    >&2 echo -- '-b option requires a bootstrapping directory to be set with -d'
    usage
  fi
fi

if ! ${nobuild}; then
  # Update git repositories (official packages, community packages and the repository of package customizations).
  for repo_name in ${repo_names}; do
    eval repo_path='"${repo_paths__'"${repo_name}"'}"'
    git -C "${repo_path}" pull
  done

  repository=$1
  package=$2
  case $repository in
    core)
      repo_path='../work/repos/packages'
      ;;
    extra)
      repo_path='../work/repos/packages'
      ;;
    community)
      repo_path='../work/repos/community'
      ;;
    *)
      >&2 echo 'Repository is either "core", "extra" or "community"'
      usage
  esac
  git_revision=$(git -C "${repo_path}" rev-parse HEAD)

  mod_git_revision=$(git -C "${repo_paths__archlinux32}" stash create)
  if [ -z "${mod_git_revision}" ]; then
    mod_git_revision=$(git -C "${repo_paths__archlinux32}" rev-parse HEAD)
  fi
  build_command="staging-${arch}-build"
  parameters=''
  if ${nocheck}; then
    parameters='-- -- --nocheck'
  fi

  git_repo=$(find_repository_with_commit "${git_revision}")
  find_pkgbuilds "${package}" "${repository}" "${git_repo}" "${git_revision}" "${mod_git_revision}"

  extract_source_directory "${git_repo}" "${git_revision}" "${mod_git_revision}" "${tmp_dir}"

  rm -f \
    ./*"-${arch}.pkg.tar.xz" ./*"-${arch}.pkg.tar.xz.sig" \
    ./*"-${arch}.pkg.tar.zst" ./*"-${arch}.pkg.tar.zst.sig"

  cd "${tmp_dir}" || exit 1

  makepkg_parameters=''
  if ${nocheck}; then
     makepkg_parameters='--skippgpcheck'
  fi
  makepkg ${makepkg_parameters} --verifysource

  # shellcheck disable=SC2086
  "${build_command}" ${parameters}
else
  cd "${tmp_dir}" || exit 1
fi

if ${bootstrap}; then
  rm -f \
    ./*"-${arch}.pkg.tar.xz.sig" \
    ./*"-${arch}.pkg.tar.zst.sig"

  find . -maxdepth 1 -type f -name "*${arch}.pkg.tar.zst" \
    -execdir gpg --local-user="${signkey}" --detach-sign '{}' \;

  case "$repository" in
    core|extra)
      staging_repo="staging"
      ;;
    community)
      staging_repo="community-staging"
      ;;
    *)
      staging_repo="staging"
      ;;
  esac

  scp -P "${bootstrap_port}" -rC "${tmp_dir}/"*"-${arch}.pkg.tar.zst" "${tmp_dir}/"*"-${arch}.pkg.tar.zst.sig" "${bootstrap_host}:${bootstrap_dir}/${staging_repo}/."
  ssh -p "${bootstrap_port}" "${bootstrap_host}" bash -l -c "'cd ${bootstrap_dir}/${staging_repo} && repo-add -n bootstrap-${staging_repo}.db.tar.gz *-${arch}.pkg.tar.zst'"
fi

# do not delete build reports, why might actually to want to have a look for things
# like checksums, logfiles, etc.
#recursively_umount_and_rm "${tmp_dir}"