#! /bin/bash

# Copyright 2021 Alexandre Oliva <lxoliva@fsfla.org>
#
# This program is part of GNU Linux-libre, a GNU project that
# publishes scripts to clean up Linux so as to make it suitable for
# use in the GNU Project and in Free System Distributions.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
# USA

reldir=$HOME/linux-libre/releases

key=474402C8C582DAFBE389C427BCB7CF877E7D47A7

success=:
for rel
do
    
rup=$(echo "$rel" | sed 's,-gnu[0-9]*$,,')
cbr=$(echo "$rup" | sed 's,\(\.\|-rc\)[0-9]*$,,')

if test -d $reldir/$rel; then
  echo $reldir/$rel exists >&2
  continue
fi

if test -h $reldir/LATEST-$cbr.0; then
  prev0=$(readlink $reldir/LATEST-$cbr.0)
  prevn=$(readlink $reldir/LATEST-$cbr.N)
elif test -h $reldir/LATEST-$rup.N; then
  cbr=$rup
  prev0=$(readlink $reldir/LATEST-$cbr.0)
  prevn=$(readlink $reldir/LATEST-$cbr.N)
else
  case $rup in
  *-rc*)
    prevbase=$(echo "$cbr" | sed 's,\.[0-9]*$,,')
    if test -h $reldir/LATEST-$prevbase.N; then
      prev0=$(readlink $reldir/LATEST-$prevbase.N)
      prevn=$prev0
    else
      echo $reldir/LATEST-$prevbase.N does not exit >&2
      exit 1
    fi
    ;;
  *)
    echo Neither $reldir/LATEST-$cbr.0 nor $reldir/LATEST-$rup.N exist >&2
    exit 1
    ;;
  esac
fi

if test -f linux-libre-$rel.check; then
    success=false
    git worktree remove logs/v$rel
    git worktree remove --force sources/v$rel
    continue
fi &&

DATE=$(git cat-file -p incr/v$rel |
       gawk '/^(author|tagger)/ {
               print strftime(PROCINFO["strftime"], $(NF-1))
             }') &&
export GIT_COMMITTER_DATE=$DATE GIT_AUTHOR_DATE=$DATE &&

plist="patch-$prev0-$rel" &&
if test "$prev0" != "$prevn"; then
  plist="$plist patch-$prevn-$rel"
fi &&

list="linux-libre-$rel.tar $plist" &&

bzip2 -k9 $list &&
xz -k9 $list &&
lzip -k9s64MiB $list &&

mkdir -v $rel &&

for f in $(ls scripts/v$rel); do
  if cmp scripts/v$rel/$f $reldir/$prevn/$f; then
    gpg --verify $reldir/$prevn/$f.sign &&
    ln -v $reldir/$prevn/$f $reldir/$prevn/$f.sign $rel/
  else
    ln -v scripts/v$rel/$f $rel/ &&
    gpg --armor --detach-sign $rel/$f &&
    mv -v $rel/$f.asc $rel/$f.sign
  fi
done &&

ln -v logs/v$rel/linux-libre-$rel.* $rel/ &&

for f in $plist; do
  gpg --armor --detach-sign $f &&
  mv -v $f.asc $rel/$f.sign
done &&

for ext in .bz2 .xz .lz; do
  for f in $list; do
    mv -v $f$ext $rel/ &&
    gpg --armor --detach-sign $rel/$f$ext &&
    mv -v $rel/$f$ext.asc $rel/$f$ext.sign
  done
done &&

rm -vf $list &&

mv -v $rel $reldir/$rel &&
ln -snfv $rel $reldir/LATEST-$cbr.N &&
if test "$rup" = "$cbr"; then
  ln -nfv $reldir/LATEST-$cbr.N $reldir/LATEST-$cbr.0 &&
  ln -nfv $reldir/LATEST-$cbr.N $reldir/LATEST-${cbr%.*}.N
elif test -n "$prevbase" && test ! -h $reldir/LATEST-$cbr.0; then
  ln -nfv $reldir/LATEST-$prevbase.N $reldir/LATEST-$cbr.0
fi &&

git worktree remove logs/v$rel &&
git worktree remove scripts/v$rel

done &&

$success