#!/bin/sh -e

die() {
    echo "$@" >&2
    exit 1
}

VERS=$(perl -lne 'print $1 if m{^#define\s+OWL_VERSION_STRING\s+"([^"]+)"\s*$}' owl.h) \
    || die "Unable to parse barnowl version"
TAG=barnowl-$VERS
TGZ="$TAG-src"

if git cat-file -t "$TAG" > /dev/null 2>&1; then
    die "Error: Object $TAG already exists."
fi

exittrap() { :; }
for sig in 1 2 13 15; do trap "exit $(($sig + 128))" $sig; done
trap 'exittrap' EXIT

git tag -s -m "BarnOwl $VERS" "$TAG"

TMPDIR=$(mktemp -d /tmp/barnowl.XXXXXX)

exittrap() { rm -rf "$TMPDIR"; }

git archive --format=tar --prefix="$TGZ/" "$TAG" | tar -x -C "$TMPDIR"

CODIR=$(pwd)
cd "$TMPDIR/$TGZ"
autoreconf
cd "$TMPDIR"
tar czvf "$TGZ.tgz" "$TGZ"
cd "$CODIR"

mv "$TMPDIR/$TGZ.tgz" .
rm -rf "$TMPDIR"

exittrap() { :; }

echo "Created release tarball for BarnOwl $VERS in $(pwd)"
echo "Remember to bump OWL_VERSION_STRING for future development."

COMMIT=$(git rev-parse "$TAG")
NOW=$(date +"%B %d, %Y")
cat <<EOF
 * '''$NOW''': BarnOwl $VERS Released. [wiki:Download] it here. or see the [/browser/ChangeLog?rev=$COMMIT ChangeLog]
EOF