#! /bin/bash

# Copyright 2021-2023 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

scriptdir=$(dirname "$0")
. $scriptdir/mkgitrel.gcfg

force= && case $1 in --force) force=$1; shift;; esac

success=:
for rel
do

. $scriptdir/mkgitrel.setprev &&

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
} &&

case $(sed -n 's,^kver=\(.*\) extra=\(.*\),\1-gnu\2,p' \
	   scripts/v$rel/deblob-$cbr) in
"$cbr$(echo $rel | sed -n 's,.*\(-gnu\),\1,p')") ;;
*) echo $rel mismatches release implied by scripts/v$rel/deblob-$cbr >&2
   echo "$cbr$(echo $rel | sed -n 's,.*\(-gnu\),\1,p')" vs \
	$(sed -n 's,^kver=\(.*\) extra=\(.*\),\1-gnu\2,p' \
	   scripts/v$rel/deblob-$cbr) >&2
   continue;;
esac &&

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-*) &&

if (cd sources/v$rel && ../../scripts/v$rel/deblob-$cbr $force) \
       >& logs/v$rel/linux-libre-$rel.log &&
   { test -z "$force" ||
       test $(grep -i error logs/v$rel/linux-libre-$rel.log |
		grep -c -v force) = 0; }; then
  :
else
  grep -i error logs/v$rel/linux-libre-$rel.log > linux-libre-$rel.check
  success=false; continue
fi &&

(
  cd sources/v$rel &&
  git commit -m "GNU Linux-libre v$rel incremental" -a &&
  git tag incr/v$rel
) &&

. $scriptdir/mkgitrel.setdate &&

(
  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 &&

{ { test -z "$force" &&
      scripts/v$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; }; } &&

if test -n "$force"; then
  echo aborting, --force is for testing only >> linux-libre-$rel.check
  success=false
fi &&

continue

echo something went wrong > linux-libre-$rel.check
success=false

done &&

: $success