#!/bin/sh

# shellcheck source=conf/default.conf
. "${0%/*}/../conf/default.conf"

if [ $# -ne 1 ]; then
  echo 'Usage: prioritize-build-list pkg-regex'
  echo ' moves packages matching pkg-regex to front of build list'
  exit 2
fi

# Create a lock file for build list.

exec 9> "${build_list_lock_file}"
if ! flock -n 9; then
  >&2 echo 'come back (shortly) later - I cannot lock build list.'
  exit 1
fi

exec 8> "${sanity_check_lock_file}"
if ! flock -s -n 8; then
  >&2 echo 'come back (shortly) later - sanity-check running.'
  exit 1
fi

{
  sed -n "/^$1/p" "${work_dir}/build-list"
  sed "/^$1/d" "${work_dir}/build-list"
} | \
  sponge "${work_dir}/build-list"

# shellcheck disable=SC2016
{
  printf 'UPDATE `build_assignments`'
  printf ' JOIN `package_sources` ON `build_assignments`.`package_source`=`package_sources`.`id`'
  printf ' SET `build_assignments`.`priority`=('
    printf 'SELECT COALESCE(MAX(`others`.`priority`),0)+1'
    printf ' FROM `build_assignments` AS `others`'
  printf ')'
  printf ' WHERE `package_sources`.`pkgbase` REGEXP from_base64("%s");\n' \
    "$(printf '%s' "$1" | base64 -w0)"
} | \
  ${mysql_command}

# Remove the lock file

rm -f "${build_list_lock_file}"