# flake.nix

{
  description = "Portable Ubuntu setup with XFCE, XRDP, and swap";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs";
    home-manager.url = "github:nix-community/home-manager";
  };

  outputs = { self, nixpkgs, home-manager }:
    let
      system = "x86_64-linux";
      pkgs = import nixpkgs { inherit system; };
    in {
      # Define the dev shell environment with XFCE, XRDP, and utilities
      devShell.${system} = pkgs.mkShell {
        buildInputs = [
          pkgs.xfce
          pkgs.xfce.xfce4-terminal
          pkgs.xrdp
        ];
      };

      # Configuration for Home Manager, setting up XFCE and XRDP
      homeConfigurations.gabriel = home-manager.lib.homeManagerConfiguration {
        pkgs = import nixpkgs { inherit system; };
        home.username = "gabriel";
        home.homeDirectory = "/home/gabriel";

        programs.bash.enable = true;
        programs.xfce.enable = true;
        services.xrdp.enable = true;
      };

      # System-level configuration for creating swap, user, etc.
      systemConfigurations.ubuntuSetup = pkgs.lib.mkDefault {
        users.users.gabriel = {
          isNormalUser = true;
          shell = pkgs.bashInteractive;
          password = "hashedPassword"; # You can replace this with a more secure password handling mechanism
        };

        # Create a 2GB swap file
        systemd.services.swapfile = {
          enable = true;
          serviceConfig.ExecStart = ''
            fallocate -l 2G /swapfile
            chmod 600 /swapfile
            mkswap /swapfile
            swapon /swapfile
          '';
          wantedBy = [ "multi-user.target" ];
        };

        # Set up the swap entry in /etc/fstab
        system.fstab = [
          {
            device = "/swapfile";
            mountPoint = "none";
            fsType = "swap";
            options = "sw";
          }
        ];
      };
    };
}