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path: root/modules/home-manager/personal/gui/x/i3/keybindings.nix
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{
  config,
  lib,
  pkgs,
  ...
}:
let
  # i3 pretty-printing
  exec = script: ''exec "${script}";'';
  execRofiShow = modi: exec "${rofiShow} ${modi}";
  modifier = "Mod4";
  mkTempMode = lib.mapAttrs (_: value: "mode default; ${value}");

  # scripts
  brightnessctl = "${pkgs.brightnessctl}/bin/brightnessctl";
  brightnessctlKbd = "${brightnessctl} --device dell:kbd_backlight";
  volumectl = "${pkgs.pulseaudio}/bin/pactl";
  screenshot = "${pkgs.shutter}/bin/shutter";
  rofiShow = "rofi -show";
  rofiPulseSelect = "${pkgs.rofi-pulse-select}/bin/rofi-pulse-select";
  rofiBluetooth = "${pkgs.rofi-bluetooth}/bin/rofi-bluetooth";
  rofiPowerMenu = "${pkgs.rofi-power-menu}/bin/rofi-power-menu";
in
{
  xsession.windowManager.i3.config = {
    inherit modifier;

    modes = lib.mkOptionDefault {
      # launching apps
      launch = mkTempMode (
        {
          "e" = exec "emacsclient --create-frame";
          "b" = exec "$BROWSER";
        }
        // lib.optionalAttrs config.programs.rofi.enable {
          "c" = execRofiShow "calc";
          "d" = execRofiShow "drun";
          "f" = execRofiShow "filebrowser";
          "m" = execRofiShow "emoji";
          "r" = execRofiShow "run";
          "t" = execRofiShow "top";
          "w" = execRofiShow "window";
          "Escape" = "";
        }
      );
    };

    keybindings = lib.mkOptionDefault (
      {
        "${modifier}+space" = "mode launch";
      }
      // lib.optionalAttrs config.programs.rofi.enable {
        "${modifier}+F1" = exec "${rofiPulseSelect} sink";
        "${modifier}+F4" = exec "${rofiPulseSelect} source";
        "${modifier}+Print" = exec rofiBluetooth;
        "${modifier}+Delete" = exec "${rofiShow} menu -modi menu:${rofiPowerMenu}";
        "${modifier}+p" = "move workspace to output right";
      }
      // {
        # exiting
        "${modifier}+Shift+e" = exec "i3-msg exit";
        "${modifier}+l" = exec config.personal.home.lockscreen;

        # media keys
        "XF86MonBrightnessUp" = exec "${brightnessctl} set 5%+";
        "XF86MonBrightnessDown" = exec "${brightnessctl} set 5%-";
        "XF86AudioRaiseVolume" = exec "${volumectl} set-sink-volume @DEFAULT_SINK@ +5%";
        "XF86AudioLowerVolume" = exec "${volumectl} set-sink-volume @DEFAULT_SINK@ -5%";
        "XF86AudioMute" = "exec ${volumectl} set-sink-mute @DEFAULT_SINK@ toggle";
        "Shift+XF86AudioRaiseVolume" = exec "${volumectl} set-source-volume @DEFAULT_SOURCE@ +5%";
        "Shift+XF86AudioLowerVolume" = exec "${volumectl} set-source-volume @DEFAULT_SOURCE@ -5%";
        "XF86AudioMicMute" = exec "${volumectl} set-source-mute @DEFAULT_SOURCE@ toggle";
        "XF86KbdBrightnessUp" = ''
          exec {brightnessctlKbd} set \
                               $(( $(${brightnessctlKbd} max) - $(${brightnessctlKbd} get) ))
        '';
        "Print" = exec screenshot;
      }
    );
  };
}