#!/bin/bash

if [ $# -eq 0 ]
then
  >&2 echo 'bumping versions of all packages ...'
  $0 $(ls "$(dirname "$(readlink -f "$0")")"/*/PKGBUILD | sed 's|^.*/\([^/]\+\)/PKGBUILD$|\1|')
  exit $?
elif [ $# -gt 1 ]
then
  err=0
  for pkg in "$@"
  do
    $0 "${pkg}"
    cErr=$?
    [ ${cErr} -gt ${err} ] && err=${cErr}
  done
  exit ${err}
fi

paket="${1%/}"
>&2 echo "bumping '${paket}' ..."

cd "$(dirname "$(readlink -f "$0")")"
[ -r "${paket}/PKGBUILD" ] || exit 1
eval $(./checkVersions -m "${paket}")
if [ "${remVer}" == "${pkgver}" ]
then
  >&2 echo '... nothing to do here.'
  exit 0
fi

cd "${paket}"

sed 's|pkgver=.*$|pkgver='"${remVer}"'|;
  s|pkgrel=.*$|pkgrel=1|;
  s@^\s*\(sha[[:digit:]]\+sums\|md5sums\)=@sha512sums=@
' -i PKGBUILD

sed '
  :begin;
    $!N;
    s@^sha512sums=\([^)]*\)\n\(.*\)$@sha512sums=\1 \2@;
  tbegin;
  P;
  D
' -i PKGBUILD

summen="$( \
  makepkg -g | \
    sed ':begin;
        $!N;
        s@^sha512sums=\([^)]*\)\n\(.*\)$@sha512sums=\1\\n\2@;
      tbegin;
      P;
      D
    ' \
)"
sed 's|sha512sums=.*$|'"${summen}"'|' -i PKGBUILD

rm -rf pkg src
sudo pacman -Sy
makepkg -fcsr --noconfirm --asdeps || exit 1
git commit PKGBUILD -m "${paket} ${pkgver} -> ${remVer}"

>&2 echo '... done'