#
#  Main system configuration. More information available in configuration.nix(5) man page.
#
#  flake.nix
#   ├─ ./hosts
#   │   └─ configuration.nix *
#   └─ ./modules
#       └─ ./editors
#           └─ ./nvim
#               └─ default.nix
#

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

{
  imports =                                 # Import window or display manager.
    [
      #../modules/editors/nvim              # ! Comment this out on first install !
    ];

  users.users.${user} = {                   # System User
    isNormalUser = true;
    extraGroups = [ "wheel" "video" "audio" "camera" "networkmanager" "lp" "kvm" "libvirtd" "adb" ];
    shell = pkgs.zsh;                       # Default shell
    uid = 2000;
#    initialPassword = "password95";
    openssh.authorizedKeys.keys = [
      "sk-ssh-ed25519@openssh.com AAAAGnNrLXNzaC1lZDI1NTE5QG9wZW5zc2guY29tAAAAIANmaraVJ/o20c4dqVnGLp/wGck9QNHFPvO9jcEbKS29AAAABHNzaDo= kabbone@kabc"
      "sk-ssh-ed25519@openssh.com AAAAGnNrLXNzaC1lZDI1NTE5QG9wZW5zc2guY29tAAAAIIgo4IP8ISUohyAMiDc3zEe6ESUE3un7eN5FhVtxZHmcAAAABHNzaDo= kabbone@kabc"
      "sk-ssh-ed25519@openssh.com AAAAGnNrLXNzaC1lZDI1NTE5QG9wZW5zc2guY29tAAAAIKVDApb3vZ+i97V4xLJh8rUF6z5OVYfORlXYbLhdQO15AAAABHNzaDo= kabbone@hades.home.opel-online.de"
      "sk-ssh-ed25519@openssh.com AAAAGnNrLXNzaC1lZDI1NTE5QG9wZW5zc2guY29tAAAAIB0q++epdX7feQxvmC2m/CJEoJbkqtAJy6Ml6WKHxryZAAAABHNzaDo= kabbone@hades.home.opel-online.de"
    ];
  };
  #security.sudo.wheelNeedsPassword = true; # User does not need to give password when using sudo.

  time.timeZone = "Europe/Berlin";        # Time zone and internationalisation
  i18n = {
    defaultLocale = "en_US.UTF-8";
    extraLocaleSettings = {                 # Extra locale settings that need to be overwritten
      LC_TIME = "de_DE.UTF-8";
      LC_MONETARY = "de_DE.UTF-8";
    };
  };

  console = {
    font = "Lat2-Terminus16";
    keyMap = "us";	                    # or us/azerty/etc
  };

  security.rtkit.enable = true;
  security.pki.certificateFiles = [
      ./rootCA.pem
  ];

  sound = {                                 # ALSA sound enable
    enable = true;
    mediaKeys = {                           # Keyboard Media Keys (for minimal desktop) enable = true;
      enable = true;
    };
  };

  fonts.fonts = with pkgs; [                # Fonts
    carlito                                 # NixOS
    vegur                                   # NixOS
    source-code-pro
    jetbrains-mono
    font-awesome                            # Icons
    hack-font
    corefonts                               # MS
    (nerdfonts.override {                   # Nerdfont Icons override
      fonts = [
        "FiraCode"
      ];
    })
  ];

  environment = {
    variables = {
      TERMINAL = "alacritty";
      EDITOR = "nvim";
      VISUAL = "nvim";
      BROWSER = "firefox";
    };
    systemPackages = with pkgs; [           # Default packages install system-wide
      vim
      git
      killall
      pciutils
      usbutils
      wget
      powertop
      cpufrequtils
      lm_sensors
      libva-utils
      at-spi2-core
      bind
      dig
    ];
  };

  services = {
    pipewire = {                            # Sound
      enable = true;
      #alsa = {
      #  enable = true;
      #  support32Bit = true;
      #};
      pulse.enable = true;
      wireplumber.enable = true;
    };
    openssh = {                             # SSH: secure shell (remote connection to shell of server)
      enable = true;                        # local: $ ssh <user>@<ip>
                                            # public:
                                            #   - port forward 22 TCP to server
                                            #   - in case you want to use the domain name insted of the ip:
                                            #       - for me, via cloudflare, create an A record with name "ssh" to the correct ip without proxy
                                            #   - connect via ssh <user>@<ip or ssh.domain>
                                            # generating a key:
                                            #   - $ ssh-keygen   |  ssh-copy-id <ip/domain>  |  ssh-add
                                            #   - if ssh-add does not work: $ eval `ssh-agent -s`
#      allowSFTP = true;                     # SFTP: secure file transfer protocol (send file to server)
                                            # connect: $ sftp <user>@<ip/domain>
                                            # commands:
                                            #   - lpwd & pwd = print (local) parent working directory
                                            #   - put/get <filename> = send or receive file
#      extraConfig = ''
#        HostKeyAlgorithms +ssh-rsa
#      '';                                   # Temporary extra config so ssh will work in guacamole
      passwordAuthentication = false;
    };
    pcscd.enable = true;
    udev.packages = [ pkgs.yubikey-personalization ];
    #flatpak.enable = true;                  # download flatpak file from website - sudo flatpak install <path> - reboot if not showing up
                                            # sudo flatpak uninstall --delete-data <app-id> (> flatpak list --app) - flatpak uninstall --unused
                                            # List:
                                            # com.obsproject.Studio
                                            # com.parsecgaming.parsec
                                            # com.usebottles.bottles
    snapper.configs = {
        home = {
          subvolume = "/home";
          extraConfig = ''
              TIMELINE_CREATE=yes
              TIMELINE_CLEANUP=yes
          '';
        };
    };
    gvfs.enable = true;
  };

  #xdg.portal = {                            # Required for flatpak
  #  enable = true;
  #  extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
  #};

  nix = {                                   # Nix Package Manager settings
    settings ={
      auto-optimise-store = true;           # Optimise syslinks
      substituters = ["https://hyprland.cachix.org"];
      trusted-public-keys = ["hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="];
    };
    gc = {                                  # Automatic garbage collection
      automatic = true;
      dates = "weekly";
      options = "--delete-older-than 7d";
    };
    package = pkgs.nixVersions.stable;               # Enable nixFlakes on system
    registry.nixpkgs.flake = inputs.nixpkgs;
    extraOptions = ''
      experimental-features = nix-command flakes
      keep-outputs          = true
      keep-derivations      = true
    '';
  };
  nixpkgs.config.allowUnfree = true;        # Allow proprietary software.
  nixpkgs.config.packageOverrides = pkgs: {
    nur = import (builtins.fetchTarball "https://github.com/nix-community/NUR/archive/master.tar.gz") {
      inherit pkgs;
    };
  };

  system = {                                # NixOS settings
#    autoUpgrade = {                         # Allow auto update
#      enable = true;
#      channel = "https://nixos.org/channels/nixos-unstable";
#    };
    stateVersion = "22.05";
  };
}