{ lib, pkgs, ... }: 
let
  mod = "Mod4";
  ws1 = "1: www";
  ws2 = "2: >_";
  ws3 = "3: </>";
  ws4 = "4: IM";
  ws5 = "5: ./";
  ws6 = "6: doc";
  ws7 = "7: mail";
  ws8 = "8";
  ws9 = "9";
  ws10 = "10: media";

  mode_system = "System:   L :  | S :  | P :  | R :  | E : ";
in {
  imports = [
    ./gammastep.nix
  ];

  home.packages = with pkgs; [
    slurp # screenshot selection
    grim # screenshots
    wl-clipboard # copy/paste
    swaybg # background images
  ];

  # similar to i3-lock-fancy
  programs.swaylock = {
    enable = true;
    package = pkgs.swaylock-effects;
    settings = {
      screenshots = true;
      effect-blur = "7x5";
      clock = true;
      indicator = true;
      indicator-thickness = 7;
    };
  };

  wayland.windowManager.sway = {
    enable = true;
    swaynag.enable = true;
    config = {
      modifier = mod;

      workspaceAutoBackAndForth = true;

      fonts = {
        names = [ "NotoSans-Regular" "FontAwesome" ];
        style = "Monospace";
        size = 12.0;
      };

/* TODO: background
      output = {
        "*" = {
          bg = "/home/me/media/Pictures/wallpapers/gargantua-black-3840x2160-11475.jpg fill";
        };
      };
      */

      assigns = {
        "${ws1}" = [ { app_id = "firefox"; } ];
        "${ws5}" = [ { app_id="thunar"; } ];
        "${ws7}" = [ { class="Thunderbird"; } ];
      };

      floating = {
        criteria = [
        { window_role = "pop-up"; }
        { window_role = "task_dialog"; }
        { title = "Preferences$"; }
        { app_id = "org.keepassxc.KeePassXC"; }
        { app_id = "pavucontrol"; }
        { class = "^Pinentry-gtk-2$"; }
        ];
      };

      terminal = "alacritty";

      keybindings = lib.mkOptionDefault {
        "${mod}+b" = "split h";
        "${mod}+v" = "split v";
        "${mod}+s" = "layout stacking";
        "${mod}+w" = "layout tabbed";
        "${mod}+e" = "layout toggle split";
        "${mod}+space" = "focus mode_toggle";
        "${mod}+d" = "exec rofi -show drun";
        "${mod}+Tab" = "exec rofi -show window";

        "${mod}+1" = "workspace ${ws1}";
        "${mod}+2" = "workspace ${ws2}";
        "${mod}+3" = "workspace ${ws3}";
        "${mod}+4" = "workspace ${ws4}; layout tabbed";
        "${mod}+5" = "workspace ${ws5}";
        "${mod}+6" = "workspace ${ws6}";
        "${mod}+7" = "workspace ${ws7}; layout tabbed";
        "${mod}+8" = "workspace ${ws8}";
        "${mod}+9" = "workspace ${ws9}";
        "${mod}+0" = "workspace ${ws10}";

        "${mod}+Shift+1" = "move container to workspace ${ws1}";
        "${mod}+Shift+2" = "move container to workspace ${ws2}";
        "${mod}+Shift+3" = "move container to workspace ${ws3}";
        "${mod}+Shift+4" = "move container to workspace ${ws4}";
        "${mod}+Shift+5" = "move container to workspace ${ws5}";
        "${mod}+Shift+6" = "move container to workspace ${ws6}";
        "${mod}+Shift+7" = "move container to workspace ${ws7}";
        "${mod}+Shift+8" = "move container to workspace ${ws8}";
        "${mod}+Shift+9" = "move container to workspace ${ws9}";
        "${mod}+Shift+0" = "move container to workspace ${ws10}";

        "${mod}+Shift+r" = "reload";

        "${mod}+r" = "mode \"resize\"";
        "${mod}+x" = "mode \"${mode_system}\"";

        "${mod}+Shift+x" = "exec swaylock";
      };

      modes = {
        resize = {
          h = "resize shrink width 10 px or 10 ppt";
          j = "resize grow height 10 px or 10 ppt";
          k = "resize shrink height 10 px or 10 ppt";
          l = "resize grow width 10 px or 10 ppt";

          Return = "mode \"default\"";
          Escape = "mode \"default\"";
          "${mod}+r" = "mode \"default\"";
        };
        "${mode_system}" = {
          l = "exec ~/bin/lock.sh, mode \"default\"";
          s = "exec $Lock systemctl suspend, mode \"default\"";
          p = "exec systemctl poweroff -i, mode \"default\"";
          r = "exec systemctl reboot, mode \"default\"";
          e = "exec i3-msg exit, mode \"default\"";

          # back to normal: Enter or Escape or mod+x again
          Return = "mode \"default\"";
          Escape = "mode \"default\"";
          "${mod}+x" = "mode \"default\"";
        };
      };
      window = {
        hideEdgeBorders = "both";
        # disable titlebar
        titlebar = false;
      };
    };
  };
}