#!/usr/bin/env bash
set -euo pipefail

PREFIX="${1:-/opt/mynetspeeder}"
BIN_PATH="/usr/local/bin/mynetspeeder"
PYTHON_BIN="${PYTHON_BIN:-$(command -v python3 || true)}"
PACKAGE_PARENT="$(dirname "$PREFIX")"
PACKAGE_NAME="$(basename "$PREFIX")"

if [[ $EUID -ne 0 ]]; then
  echo "need root"
  exit 1
fi

if [[ -z "$PYTHON_BIN" ]]; then
  echo "python3 not found"
  exit 1
fi

if ! command -v rsync >/dev/null 2>&1; then
  echo "rsync not found"
  exit 1
fi

mkdir -p "$PREFIX"
rsync -a --delete /home/mynetspeeder/ "$PREFIX/"
find "$PREFIX" -name '__pycache__' -type d -prune -exec rm -rf {} +

cat > "$BIN_PATH" <<EOF
#!/usr/bin/env bash
set -euo pipefail
export PYTHONPATH="$PACKAGE_PARENT\${PYTHONPATH:+:\$PYTHONPATH}"
cd "$PACKAGE_PARENT"
exec "$PYTHON_BIN" -m "$PACKAGE_NAME" "\$@"
EOF
chmod +x "$BIN_PATH"

chmod +x "$PREFIX/scripts/start-transparent.sh" "$PREFIX/scripts/stop-transparent.sh" "$PREFIX/scripts/install.sh"
[[ -f "$PREFIX/scripts/start-relay.sh" ]] && chmod +x "$PREFIX/scripts/start-relay.sh"
[[ -f "$PREFIX/scripts/stop-relay.sh" ]] && chmod +x "$PREFIX/scripts/stop-relay.sh"

echo "installed to $PREFIX"
echo "package parent: $PACKAGE_PARENT"
echo "command: $BIN_PATH"
echo "test: mynetspeeder --help"