#!/bin/sh

# shellcheck disable=SC2119,SC2120

# seed the build list from various sources
#
# This uses the following schedule:
# - find scheduleworthy packages by pkgname/pkgbase (diff to mirror,
#   broken dependencies, explicite regex) and their architecture
# - find pkgbases of those packages (ask upstream, if necessary)
# - remove all ignored packages (seed-ignore, explicitely ignored,
#   blacklist)
# - run mysql_generate_package_metadata on each of them once (ignoring
#   the architecture for now)

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

# TODO: allow to reschedule filtered by architecture

# TODO: remove hard-coded package suffixes

# TODO: -a reschedules too many packages (for example, packages, that have just been rescheduled in a previous run)

# TODO: -a and -p leave the buildmaster in an unclean state

# shellcheck disable=SC2016
usage() {
  >&2 echo ''
  >&2 echo 'seed-build-list [options]:'
  >&2 echo '  seed the build list from different sources'
  >&2 echo ''
  >&2 echo 'possible options:'
  >&2 echo '  -a|--auto:'
  >&2 echo '    Automatically reschedule packages which have run-time'
  >&2 echo '    dependencies that are not available from any real'
  >&2 echo '    repository and which cannot be replaced by another,'
  >&2 echo '    less stable version of the same package.'
  >&2 echo '  -f|--force'
  >&2 echo '    Do not exit if mysql_generate_package_metadata() failed.'
  >&2 echo '  -h|--help:'
  >&2 echo '    Show this help and exit.'
  >&2 echo '  -i|--ignore $pkgbase|$arch/$pkgbase:'
  >&2 echo '    Do not update the given package (for the given $arch).'
  >&2 echo '  -j|--jostle'
  >&2 echo '    Give new build assignments the highest priority.'
  >&2 echo '  -m|--mirror $url:'
  >&2 echo '    Schedule all packages, that are newer (this includes'
  >&2 echo '    packages currently unavailable on archlinux32) on the'
  >&2 echo '    given x86_64 mirror - except packages on the blacklist'
  >&2 echo '    or in conf/seed-ignore-packages.'
  >&2 echo '  -n|--no-action:'
  >&2 echo '    Do not actually update build-list, just print it.'
  >&2 echo '  -p|--package $pkg_regex:'
  >&2 echo '    Reschedule packages with matching pkgname or pkgbase.'
  >&2 echo '    Note, that these packages must be known to the database.'
  >&2 echo '  -s|--skip-arch $arch:'
  >&2 echo '    Ignore packages, that are outdated on $arch only (-a|-m).'
  >&2 echo '  -w|--wait:'
  >&2 echo '    Wait for lock if necessary.'
  [ -z "$1" ] && exit 1 || exit "$1"
}

tmp_dir=$(mktemp -d 'tmp.seed-build-list.XXXXXXXXXX' --tmpdir)
# shellcheck disable=SC2064
trap "rm -rf --one-file-system '${tmp_dir:?}'" EXIT

eval set -- "$(
  getopt -o afhi:jm:np:s:w \
    --long auto \
    --long force \
    --long help \
    --long ignore: \
    --long jostle \
    --long mirror: \
    --long no-action \
    --long package: \
    --long skip-arch: \
    --long wait \
    -n "$(basename "$0")" -- "$@" || \
    echo usage
  )"

auto=false
ignore_mysql_generate_package_metadata_errors=false
jostle=false
update=true
wait_for_lock='-n'

while true
do
  case "$1" in
    -a|--auto)
      auto=true
    ;;
    -f|--force)
      ignore_mysql_generate_package_metadata_errors=true
    ;;
    -h|--help)
      usage 0
    ;;
    -i|--ignore)
      shift
      if [ -z "${1%%*/*}" ]; then
        printf '%s\n' "$1" \
        | tr '/' '\t'
      else
        printf 'any\t%s\n' "$1"
      fi \
      >> "${tmp_dir}/ignore-packages"
    ;;
    -j|--jostle)
      jostle=true
    ;;
    -m|--mirror)
      shift
      printf '%s\n' "$1" >> \
        "${tmp_dir}/mirrors"
    ;;
    -n|--no-action)
      update=false
    ;;
    -p|--package)
      shift
      printf '%s\n' "$1" >> \
        "${tmp_dir}/package-regexes"
    ;;
    -s|--skip-arch)
      shift
      printf '%s\n' "$1" >> \
        "${tmp_dir}/skip-archs"
    ;;
    -w|--wait)
      wait_for_lock=''
    ;;
    --)
      shift
      break
    ;;
    *)
      >&2 printf 'Whoops, forgot to implement option "%s" internally.\n' \
        "$1"
      exit 42
    ;;
  esac
  shift
done

if [ $# -ne 0 ]; then
  usage 1
fi

if [ ! -s "${tmp_dir}/mirrors" ] && \
  [ ! -s "${tmp_dir}/package-regexes" ] && \
  ! ${auto}; then
  # nothing to do
  >&2 echo 'No options given to do anything.'
  usage 0
  exit 0
fi

if [ -s "${tmp_dir}/skip-archs" ] && \
  ! ${auto} && \
  [ ! -s "${tmp_dir}/mirrors" ]; then
  >&2 echo 'Invalid combination of options: -s|--skip-archs requires -m|--mirror or -a|--auto.'
  usage 2
  exit 2
fi

# get locks
if ${update}; then
  exec 9> "${sanity_check_lock_file}"
  if ! verbose_flock -s ${wait_for_lock} 9; then
    >&2 echo 'Cannot get sanity-check lock.'
    exit 1
  fi

  exec 8> "${build_list_lock_file}"
  if ! verbose_flock ${wait_for_lock} 8; then
    >&2 echo 'Cannot get build-list lock.'
    exit 1
  fi
fi

# shellcheck disable=SC2016
repos=$(
  {
    printf 'SELECT DISTINCT `repositories`.`name`'
    printf ' FROM `repositories`'
    # shellcheck disable=SC2154
    printf ' WHERE `repositories`.`stability`=%s;\n' \
      "${repository_stability_ids__stable}"
  } | \
    mysql_run_query
  printf '%s\n' 'multilib'
)

if [ -r "${base_dir}/conf/seed-ignore-packages" ]; then
  sed '
    s@/@\t@
    t
    s/^/any\t/
  ' "${base_dir}/conf/seed-ignore-packages" >> \
    "${tmp_dir}/ignore-packages"
fi

# shellcheck disable=SC2154
git -C "${repo_paths__archlinux32}" archive "${repo_heads__archlinux32}" -- blacklist \
| tar -t \
| sed '
  s@^blacklist/\([^/]\+\)/[^/]\+/\([^/]\+\)$@\1\t\2@
  t
  d
' \
| tee "${tmp_dir}/blacklist" \
>> "${tmp_dir}/ignore-packages"

for list in 'ignore-packages' 'blacklist'; do
  expand_blacklist_architectures "${tmp_dir}/architecture-compatibilities" \
  < "${tmp_dir}/${list}" \
  | sponge "${tmp_dir}/${list}"
done

# TODO: translate lib32-* packages instead of ignoring them for -m

touch "${tmp_dir}/skip-archs"

# harvest pkgnames from mirror delta
if [ -s "${tmp_dir}/mirrors" ]; then
  {
    # theirs
    while read -r mirror; do
      if [ -z "${mirror}" ]; then
        continue
      fi
      for repo in ${repos}; do
        curl -sS "${mirror}/${repo}/os/x86_64/${repo}.db.tar.gz" | \
          tar -Oxz --wildcards '*/desc' | \
          sed '
            /^%FILENAME%$/!d
            N
            s/^.*\n//
            /^lib32-/d
            s/^\(.*-\)x86_64\.pkg\.tar\.\(xz\|zst\)$/'"$(
              # shellcheck disable=SC2086,SC2154
              printf '%s\n' ${architectures} \
              | grep -vxF 'any' \
              | grep -vxFf "${tmp_dir}/skip-archs" \
              | sed '
                s/^.*$/\\1\0/
              ' \
              | sed '
                :a
                  $! N
                  $! ba
                s/\n/\\n/g
              '
            )"'/
            s/^\(.*-any\)\.pkg\.tar\.\(xz\|zst\)$/\1/
          ' | \
          sed '
            s/^\(.*\)-\([^-]\+-[^-]\+\)-\([^-]\+\)$/theirs \2 \3 \1/
          '
      done
    done < \
      "${tmp_dir}/mirrors"
    # ours
    # shellcheck disable=SC2016
    {
      printf 'SELECT '
      mysql_package_name_query
      printf ' FROM `binary_packages`'
      mysql_join_binary_packages_architectures
      printf ' LEFT'
      mysql_join_binary_packages_compressions
      mysql_join_binary_packages_binary_packages_in_repositories
      mysql_join_binary_packages_in_repositories_repositories
      printf ' WHERE `repositories`.`is_on_master_mirror`'
      printf ' OR `repositories`.`name`="build-list"'
    } | \
      mysql_run_query | \
      sed '
        s/^\(.*\)-\([^-]\+-[^-.]\+\)\(\.[^-.]\+\)\?-\([^-]\+\)\.pkg\.tar\.\(xz\|zst\)$/ours \2 \4 \1/
        s/^\(.* \)any\( \S\+\)$/\0\n\1i486\2\n\1i686\2\n\1pentium4\2/
      '
  } | \
    expand_version 2 | \
    sort -k3,4 -k2Vr,2 -k1,1 | \
    shrink_version 2 | \
    uniq -f2 | \
    sed -n '
      s/^theirs \(\S\+ \)//
      T
      p
    ' | \
    if [ -r "${tmp_dir}/ignore-packages" ]; then
      grep -vxFf "${tmp_dir}/ignore-packages"
    else
      cat
    fi | \
    sort -u >> \
    "${tmp_dir}/pkgnames"
fi

# harvest from the package-regexes
if [ -s "${tmp_dir}/package-regexes" ]; then
  # shellcheck disable=SC2016
  {
    printf 'CREATE TEMPORARY TABLE `names` (`name` VARCHAR(64));\n'
    printf 'LOAD DATA LOCAL INFILE "%s" INTO TABLE `names` (`name`);\n' \
      "${tmp_dir}/package-regexes"

    printf 'SELECT DISTINCT "pkgbase",`package_sources`.`pkgbase`,`upstream_repositories`.`name`'
    printf ' FROM `names`'
    printf ' JOIN `package_sources`'
    printf ' ON `package_sources`.`pkgbase` REGEXP `names`.`name`'
    mysql_join_package_sources_upstream_repositories
    printf ';\n'

    printf 'SELECT DISTINCT "pkgname",`binary_packages`.`pkgname`'
    printf ' FROM `names`'
    printf ' JOIN `binary_packages`'
    printf ' ON `binary_packages`.`pkgname` REGEXP `names`.`name`;\n'
  } | \
    mysql_run_query | \
    tr '\t' ' ' | \
    sed -n '
      /^pkgbase / {
        s/^\S\+ /any /
        w /dev/stdout
        d
      }
      /^pkgname / {
        s/^\S\+ /any /
        w /dev/stderr
        d
      }
    ' \
    >>"${tmp_dir}/pkgbases" \
    2>>"${tmp_dir}/pkgnames"
fi

# shellcheck disable=SC2016
{
  # create pkgbases to given pkgnames
  if [ -s "${tmp_dir}/pkgnames" ]; then
    printf 'CREATE TEMPORARY TABLE `pkgnames` ('
      printf '`architecture` VARCHAR(16),'
      printf '`pkgname` VARCHAR(64),'
      printf 'UNIQUE KEY `content`(`architecture`,`pkgname`)'
    printf ');\n'
    printf 'LOAD DATA LOCAL INFILE "%s" INTO TABLE `pkgnames` COLUMNS TERMINATED BY " " (`architecture`,`pkgname`);\n' \
      "${tmp_dir}/pkgnames"

    printf 'SELECT DISTINCT'
    printf ' "pkgbase",'
    printf '`pkgnames`.`architecture`,'
    printf '`package_sources`.`pkgbase`,'
    printf '`upstream_repositories`.`name`'
    printf ' FROM `pkgnames`'
    printf ' JOIN `binary_packages`'
    printf ' ON `binary_packages`.`pkgname`=`pkgnames`.`pkgname`'
    mysql_join_binary_packages_build_assignments
    mysql_join_build_assignments_package_sources
    mysql_join_package_sources_upstream_repositories
    printf ';\n'

    printf 'SELECT DISTINCT'
    printf ' "pkgname",'
    printf '`pkgnames`.`architecture`,'
    printf '`pkgnames`.`pkgname`'
    printf ' FROM `package_sources`'
    mysql_join_package_sources_upstream_repositories
    mysql_join_package_sources_build_assignments
    mysql_join_build_assignments_binary_packages
    printf ' RIGHT JOIN `pkgnames`'
    printf ' ON `pkgnames`.`pkgname`=`binary_packages`.`pkgname`'
    printf ' WHERE `package_sources`.`pkgbase` IS NULL;\n'

    printf 'DROP TEMPORARY TABLE `pkgnames`;\n'
  fi
  # auto-detect pkgbases
  if ${auto}; then
    printf 'CREATE TEMPORARY TABLE `relevant_archs`(`id` SMALLINT, PRIMARY KEY `id`(`id`));\n'
    printf 'INSERT INTO `relevant_archs`(`id`)'
    printf ' SELECT `architectures`.`id`'
    printf ' FROM `architectures`'
    printf ' WHERE `architectures`.`name` NOT IN ('
      base64_encode_each \
      <"${tmp_dir}/skip-archs" \
      | sed '
        s/^.*$/from_base64("\0")/
        $! s/$/,/
      ' \
      | tr -d '\n'
    printf ');\n'

    # schedule any package, that:
    #  1) is not on the build-list currently and
    #  2) is not in ignore-packages and
    #  3) is not on the deletion-list or to-be-deleted and
    #  4) has some dependency which is not provided by any package which
    #   a) is also on the build-list or
    #   b) is the least stable package with that name and for that architecture
    printf 'CREATE TEMPORARY TABLE `least_stable_bp%s`(`id` BIGINT, `is_on_build_list` BIT(1), PRIMARY KEY `id`(`id`));\n' \
      '' '_copy'
    # add least-stable built packages
    printf 'INSERT IGNORE INTO `least_stable_bp`(`id`,`is_on_build_list`)'
    printf ' SELECT `binary_packages`.`id`,'
    printf ' `bl_bpir`.`id` IS NOT NULL'
    printf ' FROM `binary_packages`'
    mysql_join_binary_packages_binary_packages_in_repositories
    mysql_join_binary_packages_in_repositories_repositories
    printf ' JOIN `relevant_archs`'
    printf ' ON `relevant_archs`.`id`=`repositories`.`architecture`'
    printf ' JOIN ('
      printf 'SELECT `binary_packages`.`pkgname`,'
      printf '`binary_packages`.`architecture`,'
      # TODO: this might become wrong if we ever change the order of the
      # rows in repository_stabilities -- we might want to refer to
      # repository_stability_relations here somehow ...
      printf 'MAX(`repositories`.`stability`) AS `stability`'
      printf ' FROM `binary_packages`'
      mysql_join_binary_packages_binary_packages_in_repositories
      mysql_join_binary_packages_in_repositories_repositories
      printf ' WHERE `repositories`.`is_on_master_mirror`'
      printf ' AND `repositories`.`name`!="build-support"'
      printf ' GROUP BY CONCAT('
        printf '`binary_packages`.`pkgname`,"-",'
        printf '`binary_packages`.`architecture`,"-",'
        printf '`repositories`.`architecture`'
      printf ')'
    printf ') AS `sub_q`'
    printf ' ON `sub_q`.`pkgname`=`binary_packages`.`pkgname`'
    printf ' AND `sub_q`.`architecture`=`binary_packages`.`architecture`'
    printf ' AND `sub_q`.`stability`=`repositories`.`stability`'
    printf ' LEFT JOIN ('
      printf '`binary_packages` AS `bl_bp`'
      mysql_join_binary_packages_binary_packages_in_repositories 'bl_bp' 'bl_bpir'
      printf ' AND `bl_bpir`.`repository`=%s' \
        "${repository_ids__any_build_list}"
    printf ')'
    printf ' ON `bl_bp`.`pkgname`=`binary_packages`.`pkgname`'
    printf ' AND ('
      printf '`bl_bp`.`architecture`=`binary_packages`.`architecture`'
      printf ' OR `bl_bp`.`architecture`=%s' \
        "${architecture_ids__any}"
      printf ' OR `binary_packages`.`architecture`=%s' \
        "${architecture_ids__any}"
    printf ');\n'

    # add all build-list packages
    printf 'INSERT IGNORE INTO `least_stable_bp`(`id`,`is_on_build_list`)'
    printf ' SELECT `binary_packages_in_repositories`.`package`,1'
    printf ' FROM `binary_packages_in_repositories`'
    printf ' WHERE `binary_packages_in_repositories`.`repository`=%s;\n' \
      "${repository_ids__any_build_list}"

    # this copy shall hold the install-target-providers
    printf 'INSERT IGNORE INTO `least_stable_bp_copy`(`id`,`is_on_build_list`)'
    printf ' SELECT `least_stable_bp`.`id`,'
    printf '`least_stable_bp`.`is_on_build_list`'
    printf ' FROM `least_stable_bp`;\n'

    # remove packages that should never be rescheduled
    printf 'DELETE `least_stable_bp`'
    printf ' FROM `least_stable_bp`'
    printf ' JOIN `binary_packages`'
    printf ' ON `binary_packages`.`id`=`least_stable_bp`.`id`'
    # 1) not on the build-list
    printf ' WHERE `least_stable_bp`.`is_on_build_list`;'

    printf 'CREATE TEMPORARY TABLE `ignore_packages`('
      printf '`architecture` VARCHAR(16),'
      printf '`pkgbase` VARCHAR(64),'
      printf 'UNIQUE KEY `content`(`architecture`,`pkgbase`)'
    printf ');\n'
    if [ -r "${tmp_dir}/ignore-packages" ]; then
      printf 'LOAD DATA LOCAL INFILE "%s" INTO TABLE `ignore_packages` COLUMNS TERMINATED BY " ";\n' \
        "${tmp_dir}/ignore-packages"
    fi

    printf 'SELECT DISTINCT "pkgbase",`ba_a`.`name`,`package_sources`.`pkgbase`,`upstream_repositories`.`name`'
    printf ' FROM `least_stable_bp`'
    printf ' JOIN `binary_packages`'
    printf ' ON `least_stable_bp`.`id`=`binary_packages`.`id`'
    mysql_join_binary_packages_dependencies
    mysql_join_dependencies_dependency_types
    printf ' AND `dependency_types`.`relevant_for_binary_packages`'
    mysql_join_dependencies_versions '' 'd_v'
    mysql_join_binary_packages_build_assignments
    mysql_join_build_assignments_architectures '' 'ba_a'
    mysql_join_build_assignments_package_sources
    mysql_join_package_sources_upstream_repositories
    # 2) not ignored
    printf ' WHERE NOT EXISTS ('
      printf 'SELECT 1'
      printf ' FROM `ignore_packages`'
      printf ' WHERE ('
        printf '`ignore_packages`.`pkgbase`=`binary_packages`.`pkgname`'
        printf ' OR `ignore_packages`.`pkgbase`=`package_sources`.`pkgbase`'
      printf ') AND `ba_a`.`name`=`ignore_packages`.`architecture`'
    # 3) not on the deletion-list or to-be-deleted
    printf ') AND NOT EXISTS ('
      printf 'SELECT 1'
      printf ' FROM `binary_packages` AS `d_bp`'
      mysql_join_binary_packages_binary_packages_in_repositories 'd_bp' 'd_bpir'
      mysql_join_binary_packages_in_repositories_repositories 'd_bpir' 'd_r'
      printf ' AND ('
        printf '`d_r`.`stability`=%s' \
          "${repository_stability_ids__forbidden}"
        printf ' OR `d_bpir`.`is_to_be_deleted`'
      printf ') WHERE `d_bp`.`pkgname`=`binary_packages`.`pkgname`'
      printf ' AND `ba_a`.`name`=`d_r`.`architecture`'
    # 4) some dependencies are not provided by the least stable packages
    printf ') AND NOT EXISTS ('
      printf 'SELECT 1'
      printf ' FROM `least_stable_bp_copy`'
      printf ' JOIN `binary_packages` AS `itp_bp`'
      printf ' ON `least_stable_bp_copy`.`id`=`itp_bp`.`id`'
      mysql_join_binary_packages_install_target_providers 'itp_bp'
      mysql_join_install_target_providers_versions '' 'itp_v'
      # must provide the right install_target
      printf ' WHERE `install_target_providers`.`install_target`=`dependencies`.`depending_on`'
      # must provide the right version
      printf ' AND ('
      mysql_query_ordering_correct \
        '`d_v`.`order`' \
        '`itp_v`.`order`' \
        '`dependencies`.`version_relation`'
      # or be on the build-list
      printf ' OR `least_stable_bp_copy`.`is_on_build_list`'
      # must provide the right architecture
      printf ') AND ('
        printf '`itp_bp`.`architecture`=`binary_packages`.`architecture`'
        printf ' OR `itp_bp`.`architecture`=%s' \
          "${architecture_ids__any}"
        printf ' OR `binary_packages`.`architecture`=%s' \
          "${architecture_ids__any}"
      printf ')'
    printf ');\n'
    printf 'DROP TEMPORARY TABLE `least_stable_bp%s`;\n' \
      '' '_copy'
    printf 'DROP TEMPORARY TABLE `ignore_packages`;\n'
  fi
} | \
  mysql_run_query | \
  tr '\t' ' ' | \
  sed -n '
    /^pkgbase / {
      s/^\S\+ //
      w /dev/stderr
      d
    }
    /^pkgname / {
      s/^\S\+ //
      w /dev/stdout
      d
    }
  ' \
  2>>"${tmp_dir}/pkgbases" \
  | sponge "${tmp_dir}/pkgnames"

if [ ! -s "${tmp_dir}/pkgbases" ] && \
  [ ! -s "${tmp_dir}/pkgnames" ]; then
  >&2 echo 'No packages matched.'
  exit
fi

for s in "${tmp_dir}/pkgbases" "${tmp_dir}/pkgnames"; do
  if [ -s "${s}" ]; then
    sort -u "${s}" | \
      sponge "${s}"
  fi
done

# pkgnames -> pkgbases (with help from upstream)
if [ -s "${tmp_dir}/pkgnames" ]; then
  while read -r architecture pkgname; do
    content=$(
      curl -Ss 'https://www.archlinux.org/packages/search/json/?name='"${pkgname}" | \
        tr ',' '\n'
    )
    repo=$(
      printf '%s\n' "${content}" | \
        sed -n '
          s/^\s*"repo"\s*:\s*"//
          T
          s/".*$//
          T
          p
        '
    )
    pkgbase=$(
      printf '%s\n' "${content}" | \
        sed -n '
          s/^\s*"pkgbase"\s*:\s*"//
          T
          s/".*$//
          T
          p
        '
    )
    if [ -z "${pkgbase}" ] || [ -z "${repo}" ]; then
      printf '%s %s\n' "${architecture}" "${pkgname}"
      continue
    fi
    printf '%s %s %s\n' \
      "${architecture}" \
      "${pkgbase}" \
      "${repo}" >> \
      "${tmp_dir}/pkgbases"
  done < \
    "${tmp_dir}/pkgnames" | \
    sponge "${tmp_dir}/pkgnames"
fi

if [ -s "${tmp_dir}/pkgnames" ]; then
  >&2 echo 'Could not find some packages upstream:'
  >&2 cat "${tmp_dir}/pkgnames"
  exit 2
fi

sort -u "${tmp_dir}/pkgbases" \
| sort -k3,3 \
| sponge "${tmp_dir}/pkgbases"

# get the current HEADs

# shellcheck disable=SC2016
{
  printf 'SELECT'
  printf ' `upstream_repositories`.`name`,'
  printf '`git_repositories`.`head`'
  printf ' FROM `upstream_repositories`'
  mysql_join_upstream_repositories_git_repositories
} \
| mysql_run_query \
| tr '\t' ' ' \
| sort -k1,1 \
| join -1 3 -2 1 -o 1.1,1.2,1.3,2.2 "${tmp_dir}/pkgbases" - \
| sponge "${tmp_dir}/pkgbases"

if ${update}; then
  cut -d' ' -f 2,3,4 "${tmp_dir}/pkgbases" \
  | sort -u \
  | while read -r pkgbase repo git_rev; do
    success=false
    # shellcheck disable=SC2154
    for gr_r in \
      "${git_rev}:${repo}" \
      "${repo_heads__packages}:core" \
      "${repo_heads__packages}:extra" \
      "${repo_heads__community}:community"; do
      printf '%s ' "${pkgbase}" "${gr_r%:*}" "${repo_heads__archlinux32}" "${gr_r#*:}" | \
        sed 's/ $/\n/'
      if mysql_generate_package_metadata "${repository_ids__any_build_list}" "${pkgbase}" "${gr_r%:*}" "${repo_heads__archlinux32}" "${gr_r#*:}"; then
        success=true
        break
      fi
    done
    if ! ${success} && \
      ! ${ignore_mysql_generate_package_metadata_errors}; then
      exit 2
    fi
  done

  cut -d' ' -f1 < \
    "${tmp_dir}/pkgbases" | \
    sort -u | \
    sponge "${tmp_dir}/pkgbases"

  # shellcheck disable=SC2016
  {
    printf 'CREATE TEMPORARY TABLE `pkgbases` ('
      printf '`pkgbase` VARCHAR (64),'
      printf 'UNIQUE KEY `pkgbase`(`pkgbase`)'
    printf ');\n'
    printf 'LOAD DATA LOCAL INFILE "%s" INTO TABLE `pkgbases`(`pkgbase`);\n' \
      "${tmp_dir}/pkgbases"

# TODO: this seems to be broken (deletes too few packages) - still valid
# after implementing the correct blacklisting below?
    printf 'DELETE `d_bpir`'
    printf ' FROM `pkgbases`'
    # the package on the deletion-list ...
    printf ' JOIN `package_sources` AS `d_ps`'
    printf ' ON `pkgbases`.`pkgbase`=`d_ps`.`pkgbase`'
    mysql_join_package_sources_build_assignments 'd_ps' 'd_ba'
    mysql_join_build_assignments_binary_packages 'd_ba' 'd_bp'
    mysql_join_binary_packages_binary_packages_in_repositories 'd_bp' 'd_bpir'
    mysql_join_binary_packages_in_repositories_repositories 'd_bpir' 'd_r'
    # shellcheck disable=SC2154
    printf ' AND `d_r`.`stability`=%s' \
      "${repository_stability_ids__forbidden}"
    # ... needs a counter-part on the build-list (which was just created)
    printf ' JOIN `package_sources` AS `a_ps`'
    printf ' ON `d_ps`.`pkgbase`=`a_ps`.`pkgbase`'
    mysql_join_package_sources_build_assignments 'a_ps' 'a_ba'
    mysql_join_build_assignments_binary_packages 'a_ba' 'a_bp'
    printf ' JOIN `architecture_compatibilities` AS `ac`'
    printf ' ON `ac`.`built_for`=`a_bp`.`architecture`'
    printf ' AND `ac`.`runs_on`=`d_r`.`architecture`'
    printf ' AND `ac`.`fully_compatible`'
    mysql_join_binary_packages_binary_packages_in_repositories 'a_bp' 'a_bpir'
    printf ' AND `a_bpir`.`repository`=%s;\n' \
      "${repository_ids__any_build_list}"

    if ${jostle}; then
      printf 'SET @`max_priority`=('
        printf 'SELECT'
        printf ' MAX(`build_assignments`.`priority`)+1'
        printf ' FROM `build_assignments`'
      printf ');\n'
      printf 'UPDATE `build_assignments`'
      mysql_join_build_assignments_package_sources
      printf ' JOIN `pkgbases`'
      printf ' ON `pkgbases`.`pkgbase`=`package_sources`.`pkgbase`'
      printf ' SET `build_assignments`.`priority`=@`max_priority`'
      printf ';\n'
    fi

    printf 'CREATE TEMPORARY TABLE `blacklist` ('
      printf '`architecture` VARCHAR (16),'
      printf '`pkgbase` VARCHAR (64),'
      printf 'UNIQUE KEY `content`(`architecture`,`pkgbase`)'
    printf ');\n'
    printf 'LOAD DATA LOCAL INFILE "%s" INTO TABLE `blacklist` COLUMNS TERMINATED BY " " (`architecture`,`pkgbase`);\n' \
      "${tmp_dir}/blacklist"

    printf 'INSERT IGNORE INTO `binary_packages_in_repositories` ('
      printf '`package`,'
      printf '`repository`,'
      printf '`is_to_be_deleted`'
    printf ')'
    printf ' SELECT'
    printf ' `binary_packages`.`id`,'
    printf '`dl_r`.`id`,'
    printf '1'
    printf ' FROM `blacklist`'
    printf ' JOIN `package_sources`'
    printf ' ON `blacklist`.`pkgbase`=`package_sources`.`pkgbase`'
    mysql_join_package_sources_build_assignments
    mysql_join_build_assignments_architectures
    printf ' AND `architectures`.`name`=`blacklist`.`architecture`'
    mysql_join_build_assignments_binary_packages
    mysql_join_binary_packages_binary_packages_in_repositories
    printf ' AND `binary_packages_in_repositories`.`repository`=%s' \
      "${repository_ids__any_build_list}"
    printf ' JOIN `architecture_compatibilities` AS `ac`'
    printf ' ON `ac`.`built_for`=`binary_packages`.`architecture`'
    printf ' AND `ac`.`fully_compatible`'
    printf ' JOIN `repositories` AS `dl_r`'
    printf ' ON `ac`.`runs_on`=`dl_r`.`architecture`'
    # shellcheck disable=SC2154
    printf ' AND `dl_r`.`stability`=%s;\n' \
      "${repository_stability_ids__forbidden}"

    printf 'DELETE `binary_packages_in_repositories`'
    printf ' FROM `blacklist`'
    printf ' JOIN `package_sources`'
    printf ' ON `blacklist`.`pkgbase`=`package_sources`.`pkgbase`'
    mysql_join_package_sources_build_assignments
    mysql_join_build_assignments_architectures
    printf ' AND `architectures`.`name`=`blacklist`.`architecture`'
    mysql_join_build_assignments_binary_packages
    mysql_join_binary_packages_binary_packages_in_repositories
    printf ' AND `binary_packages_in_repositories`.`repository`=%s' \
      "${repository_ids__any_build_list}"
    printf ' AND ('
      printf '`binary_packages`.`architecture`=`architectures`.`id`'
      printf ' OR `architectures`.`id`=%s' \
        "${architecture_ids__any}"
    printf ');\n'

    # delete deletion-list part of packages which are on the
    # deletion-list and the build-list
    mysql_query_delete_packages \
      '1'"$(
        printf ' JOIN `binary_packages` AS `j_bp`'
        printf ' ON `j_bp`.`pkgname`=`binary_packages`.`pkgname`'
        printf ' JOIN `architecture_compatibilities` AS `ac`'
        printf ' ON `ac`.`fully_compatible`'
        printf ' AND `ac`.`built_for`=`binary_packages`.`architecture`'
        printf ' JOIN `architecture_compatibilities` AS `ac_j`'
        printf ' ON `ac_j`.`fully_compatible`'
        printf ' AND `ac_j`.`built_for`=`j_bp`.`architecture`'
        printf ' AND `ac_j`.`runs_on`=`ac`.`runs_on`'
        mysql_join_binary_packages_binary_packages_in_repositories 'j_bp' 'j_bpir'
      )"' AND `j_bpir`.`repository`='"${repository_ids__any_build_list}" \
      '`repositories`.`stability`='"${repository_stability_ids__forbidden}"
  } | \
    mysql_run_query

  mysql_cleanup

  mysql_sort_versions

  mysql_find_build_assignment_loops

  # remove duplicate binary_packages from "build-list"
  mysql_query_remove_old_binary_packages_from_build_list | \
    mysql_run_query
else
  cat "${tmp_dir}/pkgbases"
fi