#! /bin/bash

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)
else
  cbr=$rup
  prev0=$(readlink $reldir/LATEST-$cbr.0)
  prevn=$(readlink $reldir/LATEST-$cbr.N)
fi

for up in linus stable; do
  git rev-parse --verify -q $up/v$rup && break
done

git verify-tag $up/v$rup &&

{ test -d scripts/v$rel ||
  git worktree add --detach scripts/v$rel scripts/$cbr
} &&

git worktree add --detach sources/v$rel $up/v$rup &&

git worktree add --detach logs/v$rel public/logs/v$prevn &&

(cd logs/v$rel && git rm -f linux-*) &&

(
  cd sources/v$rel &&
  ../../scripts/v$rel/deblob-$cbr >& ../../logs/v$rel/linux-libre-$rel.log &&
  git commit -m "GNU Linux-libre v$rel incremental" -a &&
  git tag incr/v$rel
) &&

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 &&

(
  cd sources/v$rel &&
  git reset --soft -q public/sources/v$prevn &&
  git commit --amend --reset-author -S$key \
      -m "GNU Linux-libre $rel" &&
  git tag -m "GNU Linux-libre $rel" -s -u $key sources/v$rel &&

  git reset --hard incr/v$rel^ &&
  { git merge --no-commit incr/v$prevn || :; } &&
  git diff incr/v$rel > ../../linux-libre-$rel.patckT &&
  mv -v ../../linux-libre-$rel.patckT ../../linux-libre-$rel.patck
 ) &&

git archive --format tar --prefix=linux-$rup/ -o linux-libre-$rel.tar sources/v$rel &&
gpg --armor --detach-sign linux-libre-$rel.tar &&
mv linux-libre-$rel.tar.asc logs/v$rel/linux-libre-$rel.tar.sign &&

for f in linux-libre-; do
  if cmp logs/v$rel/$f$rel.log $reldir/$prevn/$f$prevn.log; then
    ln -vf $reldir/$prevn/$f$prevn.log logs/v$rel/$f$rel.log &&
    ln -vf $reldir/$prevn/$f$prevn.log.sign logs/v$rel/$f$rel.log.sign
  else
    gpg --armor --detach-sign logs/v$rel/$f$rel.log &&
    mv -v logs/v$rel/$f$rel.log.asc logs/v$rel/$f$rel.log.sign
  fi
done &&

(
  cd logs/v$rel &&
  git add linux* &&
  git commit --amend --reset-author -S$key -m "GNU Linux-libre $rel logs" &&
  git tag -m "GNU Linux-libre $rel logs" -s -u $key logs/v$rel
) &&

git diff --src-prefix=linux-libre-$prev0/ --dst-prefix=linux-libre-$rel/ \
  public/sources/v$prev0 sources/v$rel -- > patch-$prev0-$rel &&

if test "$prev0" != "$prevn"; then
  git diff --src-prefix=linux-libre-$prevn/ --dst-prefix=linux-libre-$rel/ \
    public/sources/v$prevn sources/v$rel -- > patch-$prevn-$rel
fi &&

{ scripts/v$rel/deblob-check --use-awk linux-libre-$rel.tar ||
    scripts/v$rel/deblob-check --use-awk -C linux-libre-$rel.tar \
      > linux-libre-$rel.check ||
    { success=false; continue; }; } &&

while test -f linux-libre-$rel.patck; do
  echo please verify linux-libre-$rel.patck and move it away to complete the release
  sleep 30
done &&

(
  cd scripts/v$rel &&
  git reset --soft -q scripts/$cbr &&
  otop=$(git rev-parse --verify -q HEAD) &&
  { git commit -a -S$key -m "GNU Linux-libre $rel scripts" ||
    if git status -su | grep .; then
      success=false
      continue
    fi; } &&
  case $rup:$(git rev-parse --verify -q HEAD) in
  *-rc*:* | "$cbr":*) forcetag=: ;;
  *:"$otop") forcetag=false ;;
  *) forcetag=: ;;
  esac &&
  if $forcetag; then
    git tag -m "GNU Linux-libre $rel scripts" -s -u $key \
	-f \
      scripts/v$rel &&
    git checkout scripts/$cbr &&
    git reset --hard scripts/v$rel &&
    git checkout HEAD
  fi
) &&

for x in scripts sources logs; do
  if git rev-parse --verify -q $x/v$rel > /dev/null ; then
    git tag public/$x/v$rel $x/v$rel &&
    git tag -d $x/v$rel
  fi
done &&

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
    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
fi &&

git worktree remove logs/v$rel &&
git worktree remove scripts/v$rel &&
git worktree remove --force sources/v$rel

done

$success
exit