#!/usr/bin/env bash

version=
gitArgs=

while [ "$#" -gt 0 ]; do
	i="$1"
	shift 1
	case "$i" in
	--version | -v)
		version="$1"
		shift 1
		;;
	--git-args)
		gitArgs="$gitArgs $1"
		shift 1
		;;
	*)
		echo "$0: unknown option \`$i'"
		exit 1
		;;
	esac
done

# Create a working environment
CWD=$(pwd)

TMP=$(mktemp -d)
cd "$TMP" || exit 1

# Fetch the latest source or the required version
gitUrl="https://github.com/demarches-simplifiees/demarches-simplifiees.fr.git"

if [ -n "$version" ]; then
	git clone --depth 1 --branch "$version" $gitUrl .
else
	git clone --depth 1 $gitUrl .

	version="$(git rev-parse HEAD)"
fi

# Generate gemset.nix
nix-shell -p bundix --run "bundix -l" >/dev/null

# Copy the new files
cp gemset.nix Gemfile Gemfile.lock "$CWD/rubyEnv/"

# Print the new source details
SRC_HASH=$(nix-shell -p nurl --run "nurl --hash $gitUrl $version")

# Switch to bun
nix-shell -p bun --run "bun install --frozen-lockfile --no-cache --no-progress --ignore-scripts"

DEPS_HASH=$(nix-hash --sri --type sha256 node_modules)

cat <<EOF >"$CWD/meta.nix"
{
  version = "$version";
  src-hash = "$SRC_HASH";
  deps-hash = "$DEPS_HASH";
}
EOF

nix-shell -p nixfmt-rfc-style --run "nixfmt $CWD"

rm -rf "$TMP"