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

{
  options.lumpiasty.system76Scheduler = lib.mkEnableOption "Enable system76-scheduler";

  config = lib.mkIf (config.lumpiasty.system76Scheduler) {
    # Enable system76-scheduler
    # Config basically rewrite of stock, a bit tuned
    services.system76-scheduler = {
      enable = true;
      useStockConfig = false;
      settings = {
        processScheduler = {
          pipewireBoost = {
            enable = true;
            profile = {
              nice = -6;
              ioClass = "best-effort";
              ioPrio = 0;
            };
          };
          foregroundBoost = {
            enable = true;
            foreground = {
              nice = 0;
              ioClass = "best-effort";
              ioPrio = 0;
            };
            background = {
              nice = 6;
              ioClass = "idle";
            };
          };
        };
      };
      assignments = {
        sound-server = {
          nice = -15;
          ioClass = "realtime";
          ioPrio = 0;
          matchers = [
            # original config matches on /usr/bin/..., but this is NixOS
            "pipewire"
            "pipewire-pulse"
            "jackd"
          ];
        };
        recording = {
          nice = -9;
          ioClass = "best-effort";
          ioPrio = 0;
          matchers = [
            "amsynth"
            "jamesdsp"
            "jitsi"
            "mumble"
            "obs"
            "teams"
            "wireplumber"
            "zoom"
            "bitwig-studio"
            "include name=\"Bitwig*\""
          ];
        };
        games = {
          nice = -5;
          ioClass = "best-effort";
          ioPrio = 0;
          matchers = [
            "lutris"
            "steam"
            "heroic"
            "itch"
            "vrcompositor"
            "vrdashboard"
            "vrmonitor"
            "vrserver"
            "include descends=\"steam\""
            "include descends=\"lutris\""
            "include descends=\"heroic\""
            "include descends=\"itch\""
          ];
        };
        desktop-environment = {
          nice = -3;
          ioClass = "best-effort";
          ioPrio = 0;
          matchers = [
            "cosmic-comp"
            "gnome-shell"
            "i3wm"
            "kwin"
            "kwin_wayland"
            "Xwayland"
            "sway"
            "Hyprland"
            "gamescope"
            "Xorg"
          ];
        };
        session-services = {
          nice = 9;
          ioClass = "idle";
          matchers = [
            "include parent=\"gnome-session-binary\""
            "include parent=\"gvfsd\""
            "include cgroup=\"/user.slice/*.service\" parent=\"systemd\""
            "include cgroup=\"/user.slice/*/session.slice/*\" parent=\"systemd\""
            "exclude cgroup=\"/user.slice/*/app.slice/*\""
            "exclude cgroup=\"/user.slice/*/session.slice/*\""
            "exclude cgroup=\"/user.slice/*app-dbus*\""
          ];
        };
        system-services = {
          nice = 12;
          ioClass = "idle";
          matchers = [
            "include cgroup=\"/system.slice/*\""
          ];
        };
        package-manager = {
          nice = 15;
          class = "batch";
          ioClass = "idle";
          matchers = [
            "include name=\"apt-*\""
            "include name=\"dpkg-*\""
            "apt"
            "dpkg"
            "flatpak"
            "fwupd"
            "packagekitd"
            "update-initramfs"
            "nix"
          ];
        };
        batch = {
          nice = 19;
          class = "idle";
          ioClass = "idle";
          matchers = [
            "include name=\"sbuild-*\""
            "\"7z\""
            "\"7za\""
            "\"7zr\""
            "ar"
            "boinc"
            "c++"
            "cargo"
            "clang"
            "cmake"
            "cpp"
            "FAHClient"
            "FAHCoreWrapper"
            "fossilize-replay"
            "g++"
            "gcc"
            "gradle"
            "javac"
            "ld"
            "lld"
            "make"
            "mold"
            "mvn"
            "ninja"
            "rust-analyzer"
            "rustc"
            "sbuild"
            "tar"
            "tracker-miner-fs-3"
            "unrar"
            "zip"
          ];
        };
      };
      exceptions = [
        "include descends=\"chrt\""
        "include descends=\"gamemoderun\""
        "include descends=\"ionice\""
        "include descends=\"nice\""
        "include descends=\"taskset\""
        "include descends=\"schedtool\""
        "chrt"
        "dbus"
        "dbus-broker"
        "gamemoderun"
        "ionice"
        "nice"
        "rtkit-daemon"
        "systemd"
        "taskset"
        "schedtool"
            "/etc/profiles/per-user/user/bin/easyeffects*"
      ];
    };
    # Add https://github.com/maxiberta/kwin-system76-scheduler-integration kwin script
  };
}