{ lib, pkgs, ... }:
let
  mod = "Mod4";
  ws1 = "1: www";
  ws2 = "2: >_";
  ws3 = "3: code";
  /* TODO: */
  /* ws3 = "3: </>"; */
  ws4 = "4: IM";
  ws5 = "5: ./";
  ws6 = "6: doc";
  ws7 = "7: mail";
  ws8 = "8";
  ws9 = "9";
  /* TODO: ASCII? */
  ws10 = "10: ";
  /* ws1 = "1: "; */
  /* ws2 = "2: "; */
  /* ws3 = "3: "; */
  /* ws4 = "4: "; */
  /* ws5 = "5: "; */
  /* ws6 = "6: "; */
  /* ws7 = "7: "; */
  /* ws8 = "8"; */
  /* ws9 = "9"; */
  /* ws10 = "10: "; */

  mode_system = "System:   L :  | S :  | P :  | R :  | E : ";
in {
  home.packages = with pkgs; [
    # i3lock
    dmenu
    i3blocks
    i3lock-fancy-rapid
    i3status
    rofi
  ];
  xsession = {
    enable = true;
    windowManager.i3 = {
      enable = true;
# package = pkgs.i3-gaps;
      config = {
        modifier = mod;

        workspaceAutoBackAndForth = true;

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

        assigns = {
          "${ws1}" = [
          { class = "^Firefox$"; }
          { class = "firefox"; }
          { class = "Firefox"; }
          ];
          "${ws4}" = [{ class="Pidgin"; }];
          "${ws5}" = [{ class="Thunar"; }];
          "${ws6}" = [{ class="libreoffice-startcenter"; }];
          "${ws7}" = [{ class="Thunderbird"; }];
        };

        floating = {
          criteria = [
          { window_role = "pop-up"; }
          { window_role = "task_dialog"; }
          { title = "Preferences$"; }
          { class = "Keepassx2"; }
          { class = "keepassxc"; }
          { class = "KeePassXC"; }
          { class = "^Pavucontrol$"; }
          { class = "^Pinentry-gtk-2$"; }
          ];
        };

        terminal = "alacritty";

        keybindings = lib.mkOptionDefault {
          "${mod}+Shift+q" = "kill";
          "${mod}+h" = "focus left";
          "${mod}+j" = "focus down";
          "${mod}+k" = "focus up";
          "${mod}+l" = "focus right";
          "${mod}+Left" = "focus left";
          "${mod}+Down" = "focus down";
          "${mod}+Up" = "focus up";
          "${mod}+Right" = "focus right";
          "${mod}+Shift+h" = "move left";
          "${mod}+Shift+j" = "move down";
          "${mod}+Shift+k" = "move up";
          "${mod}+Shift+l" = "move right";
          "${mod}+Shift+Left" = "move left";
          "${mod}+Shift+Down" = "move down";
          "${mod}+Shift+Up" = "move up";
          "${mod}+Shift+Right" = "move right";
          "${mod}+b" = "split h";
          "${mod}+v" = "split v";
          "${mod}+s" = "layout stacking";
          "${mod}+w" = "layout tabbed";
          "${mod}+e" = "layout toggle split";
          "${mod}+Shift+space" = "floating toggle";
          "${mod}+space" = "focus mode_toggle";
          "${mod}+a" = "focus parent";
          "${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}";

          "${mod}+Shift+c" = "reload";
          "${mod}+Shift+r" = "restart";
          "${mod}+Shift+e" = "exec \"i3-nagbar -t warning -m 'You pressed the exit shortcut. Do you really want to exit i3? This will end your X session.' -b 'Yes, exit i3' 'i3-msg exit'\"";

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

          "${mod}+Shift+x" = "exec i3lock-fancy-rapid 5 3";
        };

        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";

            Left = "resize shrink width 10 px or 10 ppt";
            Down = "resize grow height 10 px or 10 ppt";
            Up = "resize shrink height 10 px or 10 ppt";
            Right = "resize grow width 10 px or 10 ppt";

            Return = "mode \"default\"";
            Escape = "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;
        };
      };

    };
  };
}