#!/usr/bin/env bash
set -e

# NixOS + Caelestia Shell install script
# Run from live ISO as root

echo "[+] Creating /mnt/nixy..."
rm -rf /mnt/nixy
mkdir -p /mnt/nixy/hosts/myhost
cd /mnt/nixy
git init

echo "[+] Writing flake.nix..."
cat > flake.nix << 'FLAKE'
{
  description = "NixOS + Caelestia Shell";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";

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

    caelestia-shell = {
      url = "github:caelestia-dots/shell";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { self, nixpkgs, home-manager, caelestia-shell, ... }@inputs:
    let
      system = "x86_64-linux";
    in {
      nixosConfigurations.myhost = nixpkgs.lib.nixosSystem {
        inherit system;
        specialArgs = { inherit inputs; };
        modules = [
          ./hosts/myhost/configuration.nix
          home-manager.nixosModules.home-manager
        ];
      };
    };
}
FLAKE

echo "[+] Writing configuration.nix..."
cat > hosts/myhost/configuration.nix << 'CFG'
{ config, pkgs, inputs, ... }:

{
  imports = [ ./hardware-configuration.nix ];

  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

  networking.hostName = "myhost";
  networking.networkmanager.enable = true;

  time.timeZone = "Europe/Moscow";
  i18n.defaultLocale = "ru_RU.UTF-8";

  nix.settings.experimental-features = [ "nix-command" "flakes" ];

  programs.hyprland = {
    enable = true;
    xwayland.enable = true;
  };

  environment.systemPackages = with pkgs; [
    inputs.caelestia-shell.packages.${pkgs.stdenv.hostPlatform.system}.default
    kitty
    firefox
    wofi
    brightnessctl
    pamixer
  ];

  users.users.yourname = {
    isNormalUser = true;
    extraGroups = [ "wheel" "networkmanager" "video" ];
    initialPassword = "changeme";
  };

  home-manager.useGlobalPkgs = true;
  home-manager.useUserPackages = true;

  home-manager.users.yourname = { pkgs, ... }: {
    home.stateVersion = "24.11";

    imports = [ inputs.caelestia-shell.homeModules.default ];

    programs.caelestia = {
      enable = true;
      cli.enable = true;
      settings = {
        general.apps.terminal = [ "kitty" ];
        paths.wallpaperDir = "~/Pictures/Wallpapers";
      };
    };

    wayland.windowManager.hyprland = {
      enable = true;
      settings = {
        exec-once = [ "caelestia shell -d" ];
        "$mod" = "SUPER";
        bind = [
          "$mod, Return, exec, kitty"
          "$mod, Q, killactive"
          "$mod, M, exit"
          "$mod, R, exec, wofi --show drun"
        ];
      };
    };

    programs.bash.enable = true;
  };

  xdg.portal = {
    enable = true;
    extraPortals = with pkgs; [ xdg-desktop-portal-hyprland ];
    configPackages = with pkgs; [ hyprland ];
  };

  system.stateVersion = "24.11";
}
CFG

echo "[+] Copying hardware-configuration.nix..."
cp /mnt/etc/nixos/hardware-configuration.nix /mnt/nixy/hosts/myhost/

echo "[+] Git add..."
git add .

echo "[+] Installing NixOS..."
nixos-install --flake .#myhost --root /mnt

echo "[+] Done! Set root password: passwd"
echo "[+] Then reboot"