# Example Host Configuration
#
# This is a template for your machine's configuration.nix.
# Copy this to hosts/your-hostname/configuration.nix and customize.
#
# To use:
# 1. Copy this file to hosts/<your-hostname>/configuration.nix
# 2. Generate hardware-configuration.nix: nixos-generate-config --show-hardware-config
# 3. Customize the settings below
# 4. Add to flake.nix outputs

{ config, pkgs, lib, inputs, ... }:

{
  imports = [
    ./hardware-configuration.nix  # Generate with nixos-generate-config
  ];

  # ============================================================================
  # SYSTEM BASICS
  # ============================================================================

  networking.hostName = "example";  # Change this!

  # Bootloader (adjust for your system)
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

  # Networking
  networking.networkmanager.enable = true;

  # Timezone and locale
  time.timeZone = "America/New_York";  # Change this!
  i18n.defaultLocale = "en_US.UTF-8";

  # ============================================================================
  # USERS
  # ============================================================================

  users.users.youruser = {  # Change this!
    isNormalUser = true;
    description = "Your Name";
    extraGroups = [ "wheel" "networkmanager" ];
    shell = pkgs.zsh;  # Or bash, fish, etc.
  };

  # ============================================================================
  # TIER 1: CONFIGURATION
  # ============================================================================

  # Enable Nix flakes
  nix.settings = {
    experimental-features = [ "nix-command" "flakes" ];
    auto-optimise-store = true;
  };

  # Garbage collection
  nix.gc = {
    automatic = true;
    dates = "weekly";
    options = "--delete-older-than 30d";
  };

  # ============================================================================
  # TIER 2: NOTES (nb)
  # ============================================================================

  programs.nb = {
    enable = true;
    editor = "nvim";
    defaultExtension = "md";

    # Configure your notebooks
    notebooks = {
      # personal = {
      #   remote = "git@forgejo.yourdomain.com:youruser/personal-notes.git";
      # };
      # work = {
      #   remote = "git@forgejo.yourdomain.com:youruser/work-notes.git";
      # };
    };
  };

  # ============================================================================
  # TIER 2: SYNC (Syncthing)
  # ============================================================================

  services.syncthing-managed = {
    enable = true;
    user = "youruser";  # Change this!

    # Add your device IDs here
    devices = {
      # laptop = {
      #   id = "XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX-XXXXXXX";
      # };
      # desktop = {
      #   id = "YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY-YYYYYYY";
      # };
    };

    # Configure folders to sync
    folders = {
      # documents = {
      #   path = "/home/youruser/Documents";
      #   devices = [ "laptop" "desktop" ];
      #   versioning = { type = "simple"; params.keep = "5"; };
      # };
    };
  };

  # ============================================================================
  # TIER 3: BACKUP
  # ============================================================================

  services.backup = {
    enable = true;

    # Configure your backup repository
    # repository = "b2:your-bucket:backup";
    repository = "/mnt/backup";  # Local example

    # Paths to back up
    paths = [
      "/home/youruser/Documents"
      "/home/youruser/notes"
      # Add more paths
    ];

    # Password file (create this manually or use sops-nix)
    passwordFile = "/etc/restic-password";  # Create this!

    # For cloud storage, set environment file
    # environmentFile = "/etc/restic-env";

    # Schedule: 2 AM daily
    schedule = "*-*-* 02:00:00";
  };

  # ============================================================================
  # EDITOR
  # ============================================================================

  programs.neovim = {
    enable = true;
    defaultEditor = true;
    viAlias = true;
    vimAlias = true;
  };

  # ============================================================================
  # PACKAGES
  # ============================================================================

  environment.systemPackages = with pkgs; [
    # Shell essentials
    git
    ripgrep
    fd
    jq
    htop
    tmux

    # Development
    neovim

    # Sync & backup (installed by modules, but explicit is fine)
    syncthing
    restic
    rclone
  ];

  # ============================================================================
  # SECRETS (sops-nix)
  # ============================================================================

  # Uncomment and configure when you set up sops-nix
  #
  # sops = {
  #   defaultSopsFile = ../../secrets/secrets.yaml;
  #   age.keyFile = "/home/youruser/.config/sops/age/keys.txt";
  #
  #   secrets = {
  #     "restic-password" = {};
  #     "syncthing-key" = {
  #       owner = "youruser";
  #     };
  #   };
  # };

  # ============================================================================
  # SERVICES
  # ============================================================================

  services.openssh.enable = true;

  # ============================================================================
  # SYSTEM
  # ============================================================================

  system.stateVersion = "24.05";  # Don't change after initial install
}