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

with lib;

{
  config = {
    fileSystems = {
      "/boot" =
        { device = "boot";
          fsType = "zfs";
        };

      "/nix" =
        { device = "ssd-raid0/local/nix";
          fsType = "zfs";
        };

      "/var/lib/sops-nix" =
        { device = "ssd-raid1/local/var-lib-sops--nix";
          fsType = "zfs";
          neededForBoot = true;
        };

      "/var/lib/systemd" =
        { device = "ssd-raid1/local/var-lib-systemd";
          fsType = "zfs";
          neededForBoot = true;
        };

      "/var/lib/nixos" =
        { device = "ssd-raid1/local/var-lib-nixos";
          fsType = "zfs";
          neededForBoot = true;
        };

      "/etc/zfs/zfs-list.cache" =
        { device = "ssd-raid1/local/zfs-zfs--list.cache";
          fsType = "zfs";
          neededForBoot = true;
        };

      "/root" =
        { device = "ssd-raid1/safe/home-root";
          fsType = "zfs";
        };

      # "/var/lib/unbound" =
      #   { device = "ssd-raid1/local/var-lib-unbound";
      #     fsType = "zfs";
      #   };

      # "/var/lib/dhcp" =
      #   { device = "ssd-raid1/local/var-lib-dhcp";
      #     fsType = "zfs";
      #   };

      # "/var/lib/chrony" =
      #   { device = "ssd-raid1/local/var-lib-chrony";
      #     fsType = "zfs";
      #   };

      # "/var/lib/samba" =
      #   { device = "ssd-raid1/local/var-lib-samba";
      #     fsType = "zfs";
      #   };

      # "/var/lib/prometheus2" =
      #   { device = "ssd-raid1/local/var-lib-prometheus2";
      #     fsType = "zfs";
      #     options = [ "zfsutil" ];
      #   };

      # "/var/lib/grafana" =
      #   { device = "ssd-raid1/local/var-lib-grafana";
      #     fsType = "zfs";
      #     options = [ "zfsutil" ];
      #   };

      # "/var/lib/loki" =
      #   { device = "ssd-raid1/local/var-lib-loki";
      #     fsType = "zfs";
      #     options = [ "zfsutil" ];
      #   };

      # "/srv/tftp" =
      #   { device = "ssd-raid1/local/srv-tftp";
      #     fsType = "zfs";
      #     options = [ "zfsutil" ];
      #   };

      "/var/log" =
        { device = "ssd-raid1/local/var-log";
          fsType = "zfs";
        };

      # "/home" =
      #   { device = "hdd-raid6/safe/home";
      #     fsType = "zfs";
      #     options = [ "zfsutil" ];
      #   };

      # "/home/gkleen" =
      #   { device = "hdd-raid6/safe/home/gkleen";
      #     fsType = "zfs";
      #     options = [ "zfsutil" ];
      #   };

      # "/home/mherold" =
      #   { device = "hdd-raid6/safe/home/mherold";
      #     fsType = "zfs";
      #     options = [ "zfsutil" ];
      #   };
    };

    systemd.mounts = map (date: {
      where = "/home/mherold/camera/${date}";
      what = "/dev/zvol/hdd-raid6/safe/home/mherold/camera/${date}";
      type = "vfat";
      options = lib.concatStringsSep ","
        [ "ro"
          "uid=mherold" "gid=users" "fmask=0177" "dmask=0077"
          "nofail"
        ];
    }) ["2020-09-13" "2022-01-16" "2022-05-15" "2022-12-29"];
    systemd.automounts = map (date: {
      wantedBy = [ "multi-user.target" ];

      where = "/home/mherold/camera/${date}";

      automountConfig.TimeoutIdleSec = "2m";
    }) ["2020-09-13" "2022-01-16" "2022-05-15" "2022-12-29"];

    users.users.gkleen.createHome = lib.mkForce false;
    users.users.mherold.createHome = lib.mkForce false;

    systemd.generators."zfs-mount-generator" = "${config.boot.zfs.package}/lib/systemd/system-generator/zfs-mount-generator";
    environment.etc."zfs/zed.d/history_event-zfs-list-cacher.sh".source = "${config.boot.zfs.package}/etc/zfs/zed.d/history_event-zfs-list-cacher.sh";
    systemd.services.zfs-mount.enable = false;

    services.zfs.zed.settings.PATH = mkForce (makeBinPath (with pkgs; [
      diffutils
      config.boot.zfs.package
      coreutils
      curl
      gawk
      gnugrep
      gnused
      nettools
      util-linux
    ]));

    services.zfssnap = {
      enable = true;
      config.keep = {
        within = "15m";
        "5m" = "48";
        "15m" = "32";
        hourly = "48";
        "4h" = "24";
        "12h" = "12";
        daily = "62";
        halfweekly = "32";
        weekly = "24";
        monthly = "-1";
      };
    };
    services.zfs.trim.enable = false;
    services.zfs.autoScrub = {
      enable = true;
      interval = "Sun *-*-1..7 04:00:00";
    };
    services.zfs.zed.settings.ZED_SYSLOG_SUBCLASS_EXCLUDE = "history_event";
  };
}