{
  config,
  lib,
  pkgs,
  ...
}: let
  cfg = config.wayland.windowManager.sway.config;
  pactl = "${pkgs.pulseaudio}/bin/pactl";
  execNwgBar = "exec ${pkgs.nwg-bar}/bin/nwg-bar";
  execPlayerctl = "exec ${pkgs.playerctl}/bin/playerctl";
  brightnessctl = "${pkgs.brightnessctl}/bin/brightnessctl";
  j4-dmenu-desktop = pkgs.j4-dmenu-desktop.overrideAttrs (old: {
    postPatch = ''
      sed -e 's,dmenu -i,${pkgs.bemenu}/bin/bemenu -i -b -f -l 5,g' -i ./src/Main.hh
    '';
  });
  leaveModeKeys = {
    "Insert" = "mode default";
    "Escape" = "mode default";
    "Return" = "mode default";
  };
  setVolume = "exec ${pactl} set-sink-volume $(${pactl} list short sinks | grep RUNNING | cut -f 1)";
in {
  config = lib.mkIf config.dotfiles.gui.sway.enable {
    wayland.windowManager.sway.config.modes = {
      disabled_mode = {
        # a mode for ignoring all keybindings until the compose mode keys are
        # repeated.
        "Shift+space" = "mode default";
      };
      compose_mode =
        {
          # a mode for entering other modes, or inserting commands based on
          # sequential key presses
          # e.g. Shift+space -> k -> s  == bemenu_try_restart_systemd_user_services
          f = "fullscreen toggle; mode default;";
          k = "mode kill_mode";
          r = "mode resize_mode";
          t = ''exec swaymsg [app_id="scratch_terminal"] scratchpad show; mode default;'';
          w = "mode workspace_mode";
          v = "mode volume_mode";
          "Shift+space" = "mode disabled_mode";
        }
        // leaveModeKeys;
      kill_mode =
        {
          "Shift+q" = "exec logout";
          q = "${execNwgBar}";
          r = "exec systemctl reboot -i";
          s = "exec bemenu_try_restart_systemd_user_services; mode default;";
        }
        // leaveModeKeys;
      resize_mode =
        {
          "${cfg.up}" = "resize grow height 15 px";
          "${cfg.down}" = "resize shrink height 15 px";
          "${cfg.left}" = "resize shrink width 15 px";
          "${cfg.right}" = "resize grow width 15 px";
          "Shift+${cfg.up}" = "resize grow height 45 px";
          "Shift+${cfg.down}" = "resize shrink height 45 px";
          "Shift+${cfg.left}" = "resize shrink width 45 px";
          "Shift+${cfg.right}" = "resize grow width 45 px";
        }
        // leaveModeKeys;
      volume_mode =
        {
          "${cfg.up}" = "${setVolume} +1%";
          "Shift+${cfg.up}" = "${setVolume} +10%";
          "${cfg.down}" = "${setVolume} -1%";
          "Shift+${cfg.down}" = "${setVolume} -10%";
        }
        // leaveModeKeys;
      workspace_mode =
        {
          "0" = "workspace 0";
          "1" = "workspace 1";
          "2" = "workspace 2";
          "3" = "workspace 3";
          "4" = "workspace 4";
          "5" = "workspace 5";
          "6" = "workspace 6";
          "7" = "workspace 7";
          "8" = "workspace 8";
          "9" = "workspace 9";
          "${cfg.right}" = "workspace next";
          "${cfg.left}" = "workspace prev";
        }
        // leaveModeKeys;
    };

    wayland.windowManager.sway.config.keybindings = {
      "${cfg.modifier}+t" = "exec ${cfg.terminal}";
      "${cfg.modifier}+q" = "kill";
      "${cfg.modifier}+space" = ''exec ${j4-dmenu-desktop}/bin/j4-dmenu-desktop'';
      "${cfg.modifier}+Shift+q" = "${execNwgBar}";

      XF86LaunchB = "exec ${pkgs.nwg-drawer}/bin/nwg-drawer";
      XF86AudioPlay = "${execPlayerctl} play-pause";
      XF86AudioNext = "${execPlayerctl} next";
      XF86AudioPrev = "${execPlayerctl} previous";
      XF86AudioLowerVolume = "${setVolume} -5%";
      XF86AudioRaiseVolume = "${setVolume} +5%";
      XF86AudioMute = "${setVolume} 0%";
      XF86MonBrightnessDown = "exec ${brightnessctl} set 5%-";
      XF86MonBrightnessUp = "exec ${brightnessctl} set +5%";

      # take a screenshot
      "${cfg.modifier}+ctrl+5" = ''exec grim -g "$(slurp)" - | swappy -f -'';

      "${cfg.modifier}+${cfg.left}" = "focus left";
      "${cfg.modifier}+${cfg.down}" = "focus down";
      "${cfg.modifier}+${cfg.up}" = "focus up";
      "${cfg.modifier}+${cfg.right}" = "focus right";

      "${cfg.modifier}+Shift+${cfg.left}" = "move left";
      "${cfg.modifier}+Shift+${cfg.down}" = "move down";
      "${cfg.modifier}+Shift+${cfg.up}" = "move up";
      "${cfg.modifier}+Shift+${cfg.right}" = "move right";

      "${cfg.modifier}+f" = "fullscreen toggle";

      "${cfg.modifier}+ctrl+s" = "layout stacking";
      "${cfg.modifier}+ctrl+w" = "layout tabbed";
      "${cfg.modifier}+ctrl+e" = "layout toggle split";

      "${cfg.modifier}+Shift+f" = "floating toggle";
      "${cfg.modifier}+Shift+s" = "sticky toggle";

      "${cfg.modifier}+1" = "workspace number 1";
      "${cfg.modifier}+2" = "workspace number 2";
      "${cfg.modifier}+3" = "workspace number 3";
      "${cfg.modifier}+4" = "workspace number 4";
      "${cfg.modifier}+5" = "workspace number 5";
      "${cfg.modifier}+6" = "workspace number 6";
      "${cfg.modifier}+7" = "workspace number 7";
      "${cfg.modifier}+8" = "workspace number 8";
      "${cfg.modifier}+9" = "workspace number 9";
      "${cfg.modifier}+ctrl+${cfg.right}" = "workspace next";
      "${cfg.modifier}+ctrl+${cfg.left}" = "workspace prev";
      "${cfg.modifier}+ctrl+${cfg.down}" = "workspace back_and_forth";
      "${cfg.modifier}+ctrl+${cfg.up}" = "workspace back_and_forth";

      "${cfg.modifier}+Shift+1" = "move container to workspace number 1";
      "${cfg.modifier}+Shift+2" = "move container to workspace number 2";
      "${cfg.modifier}+Shift+3" = "move container to workspace number 3";
      "${cfg.modifier}+Shift+4" = "move container to workspace number 4";
      "${cfg.modifier}+Shift+5" = "move container to workspace number 5";
      "${cfg.modifier}+Shift+6" = "move container to workspace number 6";
      "${cfg.modifier}+Shift+7" = "move container to workspace number 7";
      "${cfg.modifier}+Shift+8" = "move container to workspace number 8";
      "${cfg.modifier}+Shift+9" = "move container to workspace number 9";

      "${cfg.modifier}+Shift+minus" = "move scratchpad";
      "${cfg.modifier}+minus" = "scratchpad show";
      # NOTE: to remove a window from scratch pad toggle floating
      # https://i3wm.org/docs/userguide.html#_scratchpad

      "${cfg.modifier}+Shift+space" = "mode compose_mode";
    };
    wayland.windowManager.sway.extraConfig = ''
      bindgesture swipe:3:right workspace prev
      bindgesture swipe:3:left workspace next
    '';
    home.packages =
      if config.wayland.windowManager.sway.enable
      then
        with pkgs; [
          nwg-drawer
          nwg-bar
        ]
      else [];
  };
}