{config, ...}: {
  programs.caelestia = {
    settings = {
      # Look
      appearance = rec {
        # Rounding
        rounding = let
          inner = config.theme.innerRadius;
          outer = config.theme.outerRadius;
        in {
          small = inner;
          normal = outer;
          large = outer + outer;
          full = 1000;
        };

        # Spacing
        spacing = let
          diff = 5;
        in {
          small = padding.small + diff;
          smaller = padding.smaller + diff;
          normal = padding.normal + diff;
          larger = padding.larger + diff;
          large = padding.large + diff;
        };

        # Padding
        padding = let
          inner = config.theme.innerGap;
          outer = config.theme.outerGap;
          avg = builtins.div (outer + inner) 2;
        in {
          small = inner;
          smaller = avg;
          normal = outer;
          larger = outer + inner;
          large = outer + avg;
        };

        # Fontsize
        font.size = let
          base = config.theme.font.size;
        in {
          small = base - 2;
          smaller = base - 1;
          normal = base;
          larger = base + 2;
          large = base + 5;
          extraLarge = base + 15;
        };

        # Animations
        anim = {
          durations = {
            scale = 1;
          };
        };

        # Transparency
        transparency = {
          enabled = true;
          base = config.theme.opacity;
          layers = 1;
        };
      };

      # Settings
      general = {
        # What apps to launch
        apps = {
          terminal = config.default.terminal;
          audio = ["pavucontrol"];
          playback = ["mpv"];
        };

        # I need this, am bad at plugging in le juicer
        battery = {
          warnLevels = [
            {
              level = 20;
              title = "Low battery";
              message = "You might want to plug in a charget";
              icon = "battery_android_frame_2";
            }
            {
              level = 10;
              title = "Did you see the previous message?";
              message = "You should probably plug in a charger <b>now</b>";
              icon = "battery_android_frame_1";
              critical = true;
            }
            {
              level = 5;
              title = "Critical battery level";
              message = "PLUG THE CHARGER RIGHT NOW!!";
              icon = "battery_android_alert";
              critical = true;
            }
          ];
          criticalLevel = 5;
        };
      };

      # Background
      background = {
        enabled = true;
        desktopClock.enabled = false;
      };
      paths = {
        wallpaper = config.theme.wallpaper;
      };

      # Bar
      bar = {
        clock.showIcon = true;
        dragThreshold = 20;
        entries =
          map (id: {
            inherit id;
            enabled = true;
          }) [
            "workspaces"
            "spacer"
            "activeWindow"
            "spacer"
            "tray"
            "clock"
            "statusIcons"
            "power"
          ];
        persistent = true;
        popouts = {
          activeWindow = true;
          statusIcons = true;
          tray = true;
        };
        scrollActions = {
          brightness = true;
          workspaces = true;
          volume = true;
        };
        showOnHover = true;
        status = {
          showAudio = false;
          showBattery = true;
          showBluetooth = true;
          showKbLayout = false;
          showMicrophone = false;
          showNetwork = true;
          showLockStatus = false;
        };
        tray = {
          background = false;
          compact = false;
          iconSubs = [];
          recolour = false;
        };
        workspaces = {
          activeIndicator = true;
          activeTrail = false;
          perMonitorWorkspaces = true;
          showWindows = false;
          shown = 9;
          label = "";
          occupiedLabel = "";
          activeLabel = "";
        };
        border = {
          rounding = config.theme.outerRadius;
          thickness = config.theme.outerGap;
        };
        dashboard = {
          enabled = true;
          dragThreshold = 50;
          mediaUpdateInterval = 500;
          showOnHover = true;
        };
      };

      # Notifications
      notifs = {
        actionOnClick = true;
        clearThreshold = 0.3;
        defaultExpireTimeout = 5000;
        expandThreshold = 20;
        openExpanded = false;
        expire = true;
      };

      # On screen display
      osd = {
        enabled = true;
        enableBrightness = true;
        enableMicrophone = false;
        hideDelay = 2000;
      };

      # Services
      services = {
        audioIncrement = 0.1;
        brightnessIncrement = 0.1;
        maxVolume = 1.0;
        weatherLocation = "43.15,-77.60";
        useFahrenheit = false;
        useTwelveHourClock = false;
      };

      # Logout / shutdown
      session = {
        dragThreshold = 30;
        enabled = true;
        vimKeybinds = false;
        commands = {
          logout = ["loginctl" "terminate-user" ""];
          shutdown = ["systemctl" "poweroff"];
          hibernate = ["systemctl" "hibernate"];
          reboot = ["systemctl" "reboot"];
        };
      };

      # Sidebar
      sidebar = {
        dragThreshold = 80;
        enabled = true;
      };

      # idk
      utilities = {
        enabled = true;
        maxToasts = 4;
        toasts = {
          audioInputChanged = true;
          audioOutputChanged = true;
          capsLockChanged = true;
          chargingChanged = true;
          configLoaded = true;
          dndChanged = true;
          gameModeChanged = true;
          kbLayoutChanged = true;
          numLockChanged = true;
          vpnChanged = true;
          nowPlaying = false;
        };
      };
    };
  };
}