#! /bin/bash

# pre-check to stop early in case of typos and other mistakes
#
# 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

success=:
for rel
do

. $scriptdir/mkgitrel.setprev &&

  case $rel in
  v*)
    echo $rel starts with v, that is unexpected >&2
    success=false
    ;;
  *.*-gnu*)
    if test -d scripts/v$rel &&
       git -C scripts/v$rel status | grep -q Untracked; then
      echo scripts/v$rel exists and contains untracked files >&2
      success=false
    fi
    ;;
  *)
    echo $rel does not end with -gnu, that is unexpected >&2
    success=false
    ;;
  esac &&

if for up in linus stable; do
     git rev-parse --verify -q $up/v$rup && break
   done &&
   git verify-tag $up/v$rup; then
  :
else
  echo could not find a $rup tag on which to base this release >&2
  success=false
  continue
fi &&

for d in sources/v$rel logs/v$rel; do
  if test -d $d; then
    echo directory $d already exists, it needs to be cleaned up first >&2
    success=false
  fi
done &&

for d in $reldir/$rel; do
  if test -d $d; then
    echo directory $d already exists, cannot proceed >&2
    success=false
  fi
done &&

for d in sources logs scripts incr; do
  if git rev-parse --verify -q $d/v$rel >&2; then
    echo tag $d/v$rel already exists, it needs to be cleaned up first >&2
    success=false
  elif git rev-parse --verify -q public/$d/v$rel >&2; then
    echo tag public/$d/v$rel already exists, cannot proceed >&2
    success=false
  fi
done &&

for f in linux-libre-$rel.check linux-libre-$rel.patck; do
  if test -f $f; then
    echo warning: file $f already exists >&2
  fi
done &&

{ 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 &&

for f in scripts/v$rel/.* scripts/v$rel/*; do
  case $f in
  scripts/"v$rel"/. | \
  scripts/"v$rel"/.. | \
  scripts/"v$rel"/.git | \
  scripts/"v$rel"/COPYING | \
  scripts/"v$rel"/deblob-"$cbr" | \
  scripts/"v$rel"/deblob-check) ;;
  *) echo unexpected file $f exists >&2
     success=false;;
  esac
done &&

continue

success=false

done &&

$success