#!/bin/bash -e
#
# Written 2016 by Tim Ruehsen

app_name=$(grep "^PACKAGE_NAME='" configure|cut -d "'" -f2)
app_ver=$(grep "^PACKAGE_VERSION='" configure|cut -d "'" -f2)

# check if branch is 'master'
if [ "`git rev-parse --abbrev-ref HEAD`" != "master" ]; then
  echo Please be sure to checkout master first
  exit 1
fi

# check if latest commit has been tagged
tag=$(git describe --abbrev=0)
if [ "$tag" != `git describe` ]; then
  echo "You have to add a signed tag for the *latest* commit"
  echo Expected: $tag
  echo Found: `git describe`
  exit 1
fi

# make sure that the package version matches the current tag
if [ "$app_name-$app_ver" != "$tag" ]; then
  echo "The current tag doesn't match the package version"
  echo Expected tag: "$app_name-$app_ver"
  echo Found: $tag
fi

# Find out the archive extensions
for archive in $(grep "^DIST_ARCHIVES =" Makefile|cut -d '=' -f2); do
  extensions=$extensions" "$(echo $archive|cut -s -d'.' -f3)
done
echo "The following archive types will be created/uploaded: " $extensions

echo "Current version of $app_name is $app_ver"
echo
echo -n "Enter Y if that is OK, else enter N and edit configure.ac: "
read x
[ "$x" != "y" -a "$x" != "Y" ] && exit 0

echo
grep -i "Changes in $app_name" NEWS|head -1
echo -n "Did you edit the NEWS file ? [y/N] "
read x
[ "$x" != "y" -a "$x" != "Y" ] && exit 0

echo
while true; do
  echo -n "Alpha or Regular release ? [r/A] "
  read x
  if test "$x" = "r" || test "$x" = "R"; then
    directory="/incoming/ftp"
    break
  elif test "$x" = "a" || test "$x" = "A"; then
    directory="/incoming/alpha"
    break
  fi
done

echo
export CFLAGS="-g -O2 -Wall"

echo "* Bootstrap"
./bootstrap >/dev/null

echo "* Configure"
./configure -q

echo "* Make"
make -s -j$(nproc) clean
make -s -j$(nproc)

echo "* Make distcheck"
make -s -j$(nproc) distcheck >/dev/null

echo "* Make dist"
for ext in $extensions; do
  [[ $ext = 'gz' ]] && ext="gzip"
  [[ $ext = 'lz' ]] && ext="lzip"
  make -s -j$(nproc) dist-$ext >/dev/null
done

x=$(gpg --list-secret-keys 2>/dev/null|grep ^sec|awk '{ print $2 }')
echo $x
if [ "$x" = "" ]; then
  echo No signing key found - please check with 'gpg --list-secret-keys'
  exit 1
fi

# arrays just work in Bash
keys=($x)
if [ ${#keys[@]} -eq 1 ]; then
  IFS='/' arr=($x)
  signing_key=${arr[1]}
else
  for ((i=0; i < ${#keys[@]}; i++)); do
    echo "$((i+1))) ${keys[i]}"
  done
  while true; do
    echo -n "Enter 1-${#keys[@]}: "
    read x

    # check for digits only
    if [ -n "${i//[0-9]/}" ]; then continue; fi

    if test $x -ge 1 || test $x -le ${#keys[@]}; then
      IFS='/' arr=(${keys[$((x-1))]})
      signing_key=${arr[1]}
      break
    fi
  done
fi
unset IFS
echo $signing_key

# fetch app_version again, just in case
app_ver=$(grep "^PACKAGE_VERSION='" configure|cut -d "'" -f2)

for ext in $extensions; do
  app_tarball="${app_name}-${app_ver}.tar.$ext"
  gpg --default-key $signing_key --yes -b $app_tarball

  echo -e "version: 1.2\nfilename: ${app_tarball}\ndirectory: wget\n" >${app_tarball}.directive
  echo -e "symlink: ${app_tarball} ${app_name}-latest.tar.$ext" >>${app_tarball}.directive
  echo -e "symlink: ${app_tarball}.sig ${app_name}-latest.tar.${ext}.sig" >>${app_tarball}.directive
  gpg --default-key $signing_key --yes --clearsign ${app_tarball}.directive

ftp -v -n -i -p ftp-upload.gnu.org <<EOF
user anonymous
cd $directory
put ${app_tarball}
put ${app_tarball}.sig
put ${app_tarball}.directive.asc
EOF

done

echo "Don't forget to mention the authors announcement. (list with 'contrib/mk_authors')"