#!/usr/bin/env sh

set -e

scriptDir=$(CDPATH='' cd -- "$(dirname -- "$0")" && pwd -P)
cd "$scriptDir"

printf "Release name (e.g. \"v0.1.2\"): "
read -r releaseName

releasesDir="$(pwd)/releases"
mkdir -p "$releasesDir"
echo '*' > "$releasesDir"/.gitignore

out="$releasesDir/$releaseName"

if [ -e "$out" ]; then
    echo "$out already exists, aborting"
    exit 1
fi

revision=$(git rev-parse HEAD)

result=$(nix-build \
            --argstr revision "$revision" \
            --argstr releaseName "$releaseName" \
            --no-out-link \
            release.nix \
        )

cp -rL "$result" "$out"
chmod u+w -R "$out"

cd "$out"
gpg -a --detach-sign -o sha256.txt.gpg ./sha256.txt

echo "Release successfully created: $out"