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

{
 imports = with inputs.nixos-hardware.nixosModules; [
   common-cpu-amd common-gpu-amd common-pc-ssd
 ];

  fileSystems = {
    "/" = {
      device = "/dev/disk/by-label/root";
      fsType = "btrfs";
    };
    "/boot" = {
      device = "/dev/disk/by-label/boot";
      fsType = "vfat";
    };
    "/mnt/Storage" = {
      device = "/dev/disk/by-label/storage";
      fsType = "btrfs";
      options = [
        "noatime"
        "nodev"
        "nosuid"
      ];
    };
  };

  environment.systemPackages = with pkgs; [
    gajim-mainwindow
    virt-manager qemu scream
    replaysorcery # Custom package
    vfio-isolate # Custom Package
    discord-wrapped # Custom package
    mumble
    piper trackma # Custom package
    anime-dl # Custom package
    thunderbird
    #nwg-launchers
    gnome-podcasts
    cantata
    newsflash
    sublime-music
    anki
    #psst
  ];
  
  ptw = {
    programs = {
      mpv = {
        primaryScreen = "C27F398";
        enable = true;
      }; 
      #sway.enable = true;
      alacritty.enable = true;
      emacs.enable = true;
      firefox.enable = true;
      git.enable = true; #gnome-terminal.enable = true;
      tmux.enable = true;
      waybar = {
        enable = true;
        output = "DP-2";
      };
      #xournalpp.enable = true;
      zsh.enable = true;
      office.enable = true;
      plasma.enable = true;
      gaming.enable = true;
    };
    services = {
      gamemode.enable = true;
      #gnome.enable = true;
      input-remapper = {
        enable = false;
        postStartCommand = "${pkgs.input-remapper}/bin/input-remapper-control --command start --preset NOOP --device \"Razer Razer Tartarus V2\"";
      };
    };
    system = {
      i18n.enable = true;
      singleUser = "alexander";
      primaryInterface = "enp6s0";
      hostName = "miku";
      offloading.builder.enable = true;
    };
    virtualisation = {
      enable = true;
      gaming.enable = true;
    };
  };
  programs = {
    adb.enable = true;
    gnupg.agent.pinentryFlavor = "qt";
  };

  virtualisation = {
   #podman = {
   #  enable = true;
   #  dockerCompat = true;
   #};
  };
  
  boot = {
    extraModprobeConfig = ''
        options kvm_amd nested=1
        options vfio-pci ids=1002:67df,1002:aaf0
      '';
    initrd = {
      availableKernelModules = [ "xhci_pci" "ahci" "usbhid" "sd_mod" "amdgpu" "vendor-reset" ];
      kernelModules = [
        "amdgpu" # GPU (duh)
        "kvm-amd" "vfio_virqfd" "vfio_pci" "vfio_iommu_type1" "vfio" # Virt
        "uinput" # key-mapper
        "vendor-reset"
      ];
    };
    kernelParams = [
      "amd_iommu=on"
      "iommu=on"
      "sysrq_always_enabled=1"
      "kvm.ignore_msrs=1"
      "kvm.report_ignored_msrs=N"
      "fbcon=rotate:3"
      "quiet"
      "nopti"
      "nospectre_v2"
      "nospec"
      "clocksource=tsc"
	    "tsc=reliable"
      "pci=noaer"
    ];
    
    extraModulePackages = [ pkgs.linuxPackages_xanmod.vendor-reset ];

    # NOTE: A regression appears to have happend between 5.10 and 5.12
    #       which leads to the RX590 to have the fence fallback timer on
    #       sdma0 time out (whatever this means). Maybe bisect?
    kernelPackages = pkgs.linuxPackages_xanmod;
  };
  services = {
    ratbagd.enable = true;
    flatpak.enable = true;
    #etesync-dav.enable = true;
    connman.extraConfig = ''
        WriteResolvConf=false
      '';
    xserver = {
      enable = true;
      layout = "de";
      libinput.enable = true;
      displayManager.gdm = {
        wayland = true;
        enable = true;
      };
    };
    earlyoom.enable = lib.mkForce false;
  };

  hardware = {
    opentabletdriver.enable = true;
  };

  # TODO: Move into modules
  systemd = {
    services = {
      enable-vendor-reset = {
        wantedBy = [ "default.target" ];
        script = ''
          echo "device_specific" > /sys/bus/pci/devices/0000:01:00.0/reset_method 
        '';
        serviceConfig = {
          Type = "simple";
        };
      };
    };
    user.services = {
      replaysorcery-kms = {
        description = "An open-source, instant-replay solution for Linux; KMS service";
        #wantedBy = [ "default.target" ];
        serviceConfig = {
          Type = "simple";
          ExecStart = "${pkgs.replaysorcery}/bin/replay-sorcery kms-service";
          Restart = "always";
        };
      };
      replaysorcery = {
        description = "An open-source, instant-replay solution for Linux";
        #wantedBy = [ "default.target" ];
        requires = [ "replaysorcery-kms.service" ];
        serviceConfig = {
          Type = "simple";
          ExecStart = "${pkgs.replaysorcery}/bin/replay-sorcery";
          Restart = "always";
        };
      };
    };
  };
}