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#!/bin/sh

# copy the given package(s) into build-support

# shellcheck disable=SC2119,SC2120

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

# TODO: allow to introduce a manually built package into build-support

# TODO: remove hard-coded package suffixes

# shellcheck disable=SC2016
usage() {
  >&2 echo ''
  >&2 echo 'copy-to-build-support [options] package-list:'
  >&2 echo '  copy the packages listed in package-list into [build-support]'
  >&2 echo ''
  >&2 echo 'possible options:'
  >&2 echo '  -h|--help:'
  >&2 echo '    Show this help and exit.'
  >&2 echo '  -w|--wait:'
  >&2 echo '    Wait for lock if necessary.'
  >&2 echo ''
  >&2 echo 'lines in package-list should contain:'
  >&2 echo '$repo_arch $package_file_name'
  [ -z "$1" ] && exit 1 || exit "$1"
}

eval set -- "$(
  getopt -o hw \
    --long help \
    --long wait \
    -n "$(basename "$0")" -- "$@" || \
    echo usage
  )"

wait_for_lock='-n'

while true
do
  case "$1" in
    -h|--help)
      usage 0
    ;;
    -w|--wait)
      wait_for_lock=''
    ;;
    --)
      shift
      break
    ;;
    *)
      >&2 echo 'Whoops, forgot to implement option "'"$1"'" internally.'
      exit 42
    ;;
  esac
  shift
done

if [ "$#" -ne 1 ]; then
  >&2 echo 'No package-list was given.'
  usage
fi

if [ ! -r "$1" ]; then
  >&2 printf 'Package-list "%s" is not readable.\n' "$1"
  usage
fi

exec 9> "${sanity_check_lock_file}"
verbose_flock -s ${wait_for_lock} 9

exec 8> "${package_database_lock_file}"
verbose_flock ${wait_for_lock} 8

if intentions_left ${wait_for_lock}; then
  >&2 echo 'come back (shortly) later - There are still intentions in the queue.'
  exit 1
fi

tmp_dir=$(mktemp -d "${work_dir}/tmp.copy-to-build-support.0.XXXXXXXXXX")
trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT

export TMPDIR="${tmp_dir}"

sed -n '
  s/ \S\+/\0 \0/
  T
  s/\.pkg\.tar\.zst$//
  T
  s/\(-[0-9]\+\)\(-[^- ]\+\)$/\1.0\2/
  s/-\([^-: ]\+\)\(\(-[^- ]\+\)\{2\}\)$/-0:\1\2/
  s/-\([^-: ]\+\):\([^-: ]\+\)-\([^-. ]\+\).\([^-. ]\+\)-\([^- ]\+\)$/ \1 \2 \3 \4 \5/
  p
' "$1" | \
  while read -r repo_arch package pkgname epoch pkgver pkgrel sub_pkgrel architecture; do

    # shellcheck disable=SC2016
    id=$(
      {
        printf 'SELECT `binary_packages`.`id`'
        printf ' FROM `binary_packages`'
        mysql_join_binary_packages_architectures
        mysql_join_binary_packages_binary_packages_in_repositories
        mysql_join_binary_packages_in_repositories_repositories
        printf ' WHERE'
        printf ' `binary_packages`.`%s`=from_base64("%s") AND' \
          'epoch' "$(printf '%s' "${epoch}" | base64 -w0)" \
          'pkgver' "$(printf '%s' "${pkgver}" | base64 -w0)" \
          'pkgrel' "$(printf '%s' "${pkgrel}" | base64 -w0)" \
          'sub_pkgrel' "$(printf '%s' "${sub_pkgrel}" | base64 -w0)" \
          'pkgname' "$(printf '%s' "${pkgname}" | base64 -w0)"
        printf ' `architectures`.`name`=from_base64("%s")' \
          "$(printf '%s' "${architecture}" | base64 -w0)"
        printf ' AND NOT EXISTS ('
          printf 'SELECT 1'
          printf ' FROM `binary_packages_in_repositories` AS `bs_bpir`'
          mysql_join_binary_packages_in_repositories_repositories 'bs_bpir' 'bs_r'
          printf ' WHERE `bs_bpir`.`package`=`binary_packages`.`id`'
          printf ' AND `bs_r`.`name`="build-support"'
        printf ') AND `repositories`.`is_on_master_mirror`'
        printf ' LIMIT 1;\n'
      } | \
        mysql_run_query
    )
    if [ -z "${id}" ]; then
      continue
    fi

    printf '%s\n' "${package}" >> \
      "${tmp_dir}/packages"
    for suffix in '' '.sig'; do
      printf 'ln -s "../../pool/%s%s" "%s/build-support/%s%s"\n' \
        "${package}" \
        "${suffix}" \
        "${repo_arch}" \
        "${package}" \
        "${suffix}"
    done >> \
      "${tmp_dir}/sftp-command"
    printf '%s %s/pool/%s\n' \
      "${repo_arch}" \
      "${master_mirror_rsync_directory}" \
      "${package}" | \
      sed '
        p
        s/$/.sig/
      ' >> \
      "${tmp_dir}/to-copy"
    printf '%s\n' \
      "${repo_arch}" >> \
      "${tmp_dir}/repo-archs"

    # shellcheck disable=SC2016
    {
      printf 'INSERT IGNORE INTO `binary_packages_in_repositories`'
      printf ' (`repository`,`package`,`is_to_be_deleted`)'
      # shellcheck disable=SC2154
      printf ' VALUES (%s,%s,0);\n' \
        "$(eval echo '"${repository_ids__'"${repo_arch}"'_build_support}"')" \
        "${id}"
      printf 'SELECT LAST_INSERT_ID();\n'
    } >> \
      "${tmp_dir}/mysql-command"
  done

if [ ! -s "${tmp_dir}/repo-archs" ]; then
  >&2 echo 'Nothing to do.'
  if [ -w "$1" ]; then
    printf '' > "$1"
  fi
  exit 0
fi

sort -u "${tmp_dir}/repo-archs" | \
  sponge "${tmp_dir}/repo-archs"

while read -r repo_arch; do
  mkdir "${tmp_dir}/${repo_arch}"
  {
    printf 'failsafe_rsync'
    for suffix in 'db' 'files'; do
      printf ' "%s/%s/build-support/build-support.%s."*' \
        "${master_mirror_rsync_directory}" \
        "${repo_arch}" \
        "${suffix}"
    done
    printf ' "%s/%s/"\n' \
      "${tmp_dir}" \
      "${repo_arch}"
  } \
  | intent_something
done < \
  "${tmp_dir}/repo-archs"

if [ -s "${tmp_dir}/to-copy" ]; then
  mkdir "${tmp_dir}/transit/"
  while read -r repo_arch; do
    mkdir "${tmp_dir}/transit/${repo_arch}/"
    {
      printf 'failsafe_rsync '
      sed -n '
        s,^'"$(str_to_regex "${repo_arch}")"' ,,
        T
        p
      ' "${tmp_dir}/to-copy" \
      | tr '\n' ' '
      printf ' "%s/transit/%s/"\n' \
        "${tmp_dir}" \
        "${repo_arch}"
      printf 'repo-add'
      printf ' "%s/%s/build-support.db.tar.gz"' \
        "${tmp_dir}" \
        "${repo_arch}"
      printf ' "%s/transit/%s/"*".pkg.tar.zst"\n' \
        "${tmp_dir}" \
        "${repo_arch}"
    } \
    | intent_something
  done < \
    "${tmp_dir}/repo-archs"
fi

if [ -s "${tmp_dir}/sftp-command" ]; then
  printf 'failsafe_sftp < "%s/sftp-command"\n' \
    "${tmp_dir}" \
  | intent_something
fi

while read -r repo_arch; do
  {
    printf 'recompress_gz "%s"' \
      "${tmp_dir}"
    for suffix in '' '.old'; do
      printf ' "%s/%s/build-support."*".tar.gz%s"' \
        "${tmp_dir}" \
        "${repo_arch}" \
        "${suffix}"
    done
    printf '\n'
    printf 'failsafe_rsync'
    for suffix in 'db' 'files'; do
      printf ' "%s/%s/build-support.%s."*' \
        "${tmp_dir}" \
        "${repo_arch}" \
        "${suffix}"
    done
    printf ' "%s/%s/build-support/"\n' \
      "${master_mirror_rsync_directory}" \
      "${repo_arch}"
  } \
  | intent_something
done < \
  "${tmp_dir}/repo-archs"

if [ -s "${tmp_dir}/mysql-command" ]; then
  {
    printf 'mysql_run_query \\\n'
    printf '<"%s/mysql-command" \\\n' \
      "${tmp_dir}"
    printf '| sort -u \\\n'
    printf '| remove_old_package_versions\n'
  } \
  | intent_something
fi

printf 'rm -rf --one-file-system "%s"\n' \
  "${tmp_dir}" \
| intent_something

if [ -w "$1" ]; then
  cat "${tmp_dir}/packages" > \
    "$1"
fi

execute_all_intentions