#!/usr/bin/env bash

# NixOS rebuild script for flake-based configuration
# Usage: ./rebuild.sh [switch|build|test]

set -e

# Check if experimental features are enabled
if ! nix --version | grep -q "experimental-features"; then
    echo "Warning: Nix experimental features may not be enabled."
    echo "Consider adding 'experimental-features = nix-command flakes' to /etc/nix/nix.conf"
fi

ACTION=${1:-switch}

case $ACTION in
    switch)
        echo "Building and switching to new configuration..."
        sudo nixos-rebuild switch --flake .#xps-nixos
        ;;
    build)
        echo "Building configuration without switching..."
        sudo nixos-rebuild build --flake .#xps-nixos
        ;;
    test)
        echo "Building configuration for testing..."
        sudo nixos-rebuild build --flake .#xps-nixos
        echo "Configuration built successfully. Run 'sudo nixos-rebuild switch' to apply it."
        ;;
    update)
        echo "Updating flake inputs..."
        nix flake update --extra-experimental-features nix-command --extra-experimental-features flakes
        ;;
    *)
        echo "Usage: $0 [switch|build|test|update]"
        echo "  switch: Build and switch to new configuration (default)"
        echo "  build:  Build configuration without switching"
        echo "  test:   Build configuration for testing"
        echo "  update: Update flake inputs"
        exit 1
        ;;
esac