# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).

{ config, pkgs, ... }:

{
  imports = [
    # Include the results of the hardware scan.
    ./hardware-configuration.nix
  ];

  # Bootloader.
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;
  boot.supportedFilesystems = [ "nfs" ];

  # for disc drive
  boot.kernelModules = [ "sg" ];

  networking.hostName = "kusanagi"; # Define your hostname.
  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.

  # Enable networking
  networking.networkmanager.enable = true;

  # for tailscale
  networking.firewall.trustedInterfaces = [ "tailscale0" ];
  networking.firewall.allowedUDPPorts = [ 41641 ];

  # Set your time zone.
  time.timeZone = "America/Chicago";

  # Select internationalisation properties.
  i18n.defaultLocale = "en_US.UTF-8";

  i18n.extraLocaleSettings = {
    LC_ADDRESS = "en_US.UTF-8";
    LC_IDENTIFICATION = "en_US.UTF-8";
    LC_MEASUREMENT = "en_US.UTF-8";
    LC_MONETARY = "en_US.UTF-8";
    LC_NAME = "en_US.UTF-8";
    LC_NUMERIC = "en_US.UTF-8";
    LC_PAPER = "en_US.UTF-8";
    LC_TELEPHONE = "en_US.UTF-8";
    LC_TIME = "en_US.UTF-8";
  };

  nix.settings.trusted-users = [
    "root"
    "henz"
  ];

  # Enable the X11 windowing system.
  services.xserver.enable = true;

  # Enable the GNOME Desktop Environment.
  services.displayManager.gdm.enable = false;
  services.desktopManager.gnome.enable = true;

  services.tailscale.enable = true;
  services.mpd.enable = false;

  services.kavita = {
    enable = true;
    tokenKeyFile = "/var/lib/kavita/token-key";
    settings.Port = 5000;
  };

  systemd.tmpfiles.rules = [
    "d /srv/library 2750 henz kavita - -"
  ];

  # For disc drives
  services.udev.extraRules = ''
    KERNEL=="sr[0-9]*", GROUP="cdrom", MODE="0660"
    KERNEL=="sg[0-9]*", GROUP="sg", MODE="0660"
  '';

  # prevent auto-mounting optical disks
  services.udisks2.enable = true;

  programs.dconf.enable = true;
  programs.niri.enable = true;

  # login screen
  services.greetd = {
    enable = true;
    settings = {
      default_session = {
        command = "${pkgs.tuigreet}/bin/tuigreet --time --remember --cmd niri-session";
        user = "greeter";
      };
    };
  };

  # This is required to let tuigreet write to its cache (for --remember)
  systemd.services.greetd.serviceConfig = {
    Type = "idle";
    StandardInput = "tty";
    StandardOutput = "tty";
    StandardError = "journal"; # Better for debugging
    TTYReset = true;
    TTYVHangup = true;
    TTYVTDisallocate = true;
  };

  systemd.user.services.mpd = {
    description = "Music Player Daemon";
    after = [
      "network.target"
      "sound.target"
    ];
    wantedBy = [ "default.target" ];
    serviceConfig = {
      ExecStart = "${pkgs.mpd}/bin/mpd --no-daemon";
      Type = "notify";
      LimitRTPRIO = 50;
      LimitRTTIME = "infinity";
    };
  };

  # Configure keymap in X11
  services.xserver.xkb = {
    layout = "us";
    variant = "";
  };

  # Enable CUPS to print documents.
  services.printing = {
    enable = true;
    drivers = with pkgs; [
      gutenprint
    ];
  };

  services.avahi = {
    enable = true;
    nssmdns4 = true;
    openFirewall = true;
  };

  services.pulseaudio.enable = false;
  security.rtkit.enable = true;
  services.pipewire = {
    enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
    jack.enable = true;
    wireplumber.enable = true;
  };
  # Add this for better pro audio support
  services.pipewire.extraConfig.pipewire."10-low-latency" = {
    "context.properties" = {
      "default.clock.rate" = 48000;
      "default.clock.quantum" = 256;
      "default.clock.min-quantum" = 256;
      "default.clock.max-quantum" = 2048;
    };
  };

  # Pin the Scarlett 18i20 to the raw "Pro Audio" profile.
  # The 26.05 pipewire/wireplumber update began preferring the UCM "HiFi"
  # profile, which splits the interface into Direct1/Line5/SPDIF1/... sinks and
  # broke monitoring. This priority rule forces the multichannel Pro Audio
  # profile statelessly on every boot (and survives future UCM renames).
  services.pipewire.wireplumber.extraConfig."51-scarlett-pro-audio" = {
    "device.profile.priority.rules" = [
      {
        matches = [
          {
            "device.name" = "alsa_card.usb-Focusrite_Scarlett_18i20_USB_P9DCR6Y378D1E6-00";
          }
        ];
        actions = {
          update-props = {
            priorities = [ "pro-audio" ];
          };
        };
      }
    ];
  };

  # Real-time audio optimizations
  security.pam.loginLimits = [
    {
      domain = "@audio";
      item = "memlock";
      type = "-";
      value = "unlimited";
    }
    {
      domain = "@audio";
      item = "rtprio";
      type = "-";
      value = "99";
    }
    {
      domain = "@audio";
      item = "nofile";
      type = "soft";
      value = "99999";
    }
    {
      domain = "@audio";
      item = "nofile";
      type = "hard";
      value = "99999";
    }
  ];

  services.nfs.server.enable = false;
  services.rpcbind.enable = true;

  services.nfs.idmapd.settings = {
    General = {
      Domain = "kusanagi"; # or your actual domain name
    };
  };

  # NAS shares. Use the mDNS-resolvable name (bare "milgrim" doesn't resolve)
  # and automount on first access so a boot-time DNS/network race can't leave
  # them unmounted (which silently breaks MPD, whose DB points at these paths).
  fileSystems."/mnt/milgrim-share" = {
    device = "milgrim.local:/volume1/share";
    fsType = "nfs";
    options = [
      "nfsvers=4"
      "rsize=8192"
      "wsize=8192"
      "_netdev"
      "noauto"
      "x-systemd.automount"
      "x-systemd.idle-timeout=600"
      "x-systemd.mount-timeout=10s"
    ];
  };

  fileSystems."/mnt/milgrim-public" = {
    device = "milgrim.local:/volume1/public";
    fsType = "nfs";
    options = [
      "nfsvers=4"
      "rsize=8192"
      "wsize=8192"
      "_netdev"
      "noauto"
      "x-systemd.automount"
      "x-systemd.idle-timeout=600"
      "x-systemd.mount-timeout=10s"
    ];
  };

  # Kernel optimizations for audio
  boot.kernelParams = [
    "threadirqs"
    "preempt=full" # if using a PREEMPT kernel
    # Add USB audio optimizations
    "usbcore.usbfs_memory_mb=1024"
  ];

  fonts = {
    enableDefaultPackages = true;

    packages = with pkgs; [
      noto-fonts-cjk-sans
      noto-fonts-cjk-serif
      inter
      nerd-fonts.symbols-only
      noto-fonts
      ibm-plex
      public-sans
      adwaita-fonts
    ];

    fontconfig = {
      enable = true;

      defaultFonts = {
        monospace = [
          "Berkeley Mono"
          "Liberation Mono"
          "Symbols Nerd Font"
        ];
        sansSerif = [
          "Liberation Sans"
          "Noto Sans"
        ];
        serif = [ "Liberation Serif" ];
        emoji = [ "Nerd Font Symbols Only" ];
      };

      # Force ui-sans-serif and system-ui to resolve correctly
      localConf = ''
        <?xml version="1.0"?>
        <!DOCTYPE fontconfig SYSTEM "urn:fontconfig:fonts.dtd">
        <fontconfig>
          <alias>
            <family>system-ui</family>
            <prefer>
              <family>Liberation Sans</family>
            </prefer>
          </alias>
          <alias>
            <family>ui-sans-serif</family>
            <prefer>
              <family>Liberation Sans</family>
            </prefer>
          </alias>
        </fontconfig>
      '';
    };

    fontDir.enable = true;
  };

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.henz = {
    isNormalUser = true;
    description = "Henry Webster";
    extraGroups = [
      "networkmanager"
      "wheel"
      "audio"
      "cdrom"
      "optical"
      "sg"
      "scanner"
      "lp"
      "input"
    ];
    packages = with pkgs; [
      blender
      rocmPackages.rpp
      rocmPackages.hipcc
      ardour
      gnupg
      pinentry-gnome3
      git
      tmux
      protonmail-desktop
      ghostty
      inkscape
      darktable
      nfs-utils
      imagemagick
      davinci-resolve-studio
      alsa-utils
      alsa-tools
      usbutils
      pipewire.jack
      rocmPackages.rocminfo
      discord
      vlc
      neovim
      tmux
      unzip
      calf
      gimp
      xclip
      gcc
      pkg-config
      direnv
      cargo
      ripgrep
      abcde
      guile
      autoconf
      automake
      libtool
      gnumake
      gcc
      pkg-config

      mpd
      mpc
      ncmpcpp
      ffmpeg
      flatpak
      nushell

      # for archiving
      #makemkv
      libaacs
      libbdplus
      libdvdcss
      psmisc
      mkvtoolnix
      dvdbackup
      chromaprint
      picard
      flac

      bc
      btop
      newsboat
      castero

      opencode
      claude-code

      # hyprland
      waybar
      networkmanagerapplet

      # niri
      xwayland-satellite
      fuzzel
      swaybg

      stow

      lua-language-server
      nil
      clang-tools
      marksman
      gopls
      ruff
      basedpyright
      zls
      gdb
      nixfmt

      gcc
      nodejs
      gnumake

      # scanners
      simple-scan

      (pkgs.makeDesktopItem {
        name = "PICO-8";
        desktopName = "PICO-8";
        exec = "pico8";
        icon = "pico8";
        comment = "Fantasy console for making, sharing and playing tiny games";
        categories = [ "Game" ];
      })
    ];
  };

  nixpkgs.overlays = [
    (self: super: {
      abcde = super.abcde.overrideAttrs (oldAttrs: {
        # We use postInstall to modify the script after it has been copied to the output directory
        postInstall = (oldAttrs.postInstall or "") + ''
          # Patch 1: Allow GetOptions to accept 4 arguments (instead of requiring 5+)
          sed -i 's/discinfo=i{5,}/discinfo=i{4,}/g' $out/bin/abcde-musicbrainz-tool

          # Patch 2: Lower the logic check from 5 to 4
          sed -i 's/$#discinfo < 5/$#discinfo < 4/g' $out/bin/abcde-musicbrainz-tool
        '';
      });
    })
  ];

  services.pcscd.enable = true;

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

  # Allow unfree packages
  nixpkgs.config.allowUnfree = true;

  nixpkgs.config.rocmSupport = true;

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [
    #  vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
    #  wget
    neovim
  ];

  environment.sessionVariables = {
    GSK_RENDERER = "gl";
    XCURSOR_THEME = "Bibata-Modern-Classic";
    XCURSOR_SIZE = "24";
    HYPRCURSOR_THEME = "Bibata-Modern-Classic";
    HYPRCURSOR_SIZE = "24";
  };

  environment.localBinInPath = true;

  # Graphics setup
  hardware.graphics = {
    enable = true;
    enable32Bit = true;
  };
  hardware.graphics.extraPackages = with pkgs; [
    rocmPackages.clr.icd
  ];

  # scanner
  hardware.sane.enable = true;

  # This value determines the NixOS release from which the default
  # settings for stateful data, like file locations and database versions
  # on your system were taken. It‘s perfectly fine and recommended to leave
  # this value at the release version of the first install of this system.
  # Before changing this value read the documentation for this option
  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
  system.stateVersion = "24.11"; # Did you read the comment?

  powerManagement.cpuFreqGovernor = "performance";

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

  boot.binfmt.emulatedSystems = [ "aarch64-linux" ];

}