configuration.nix/home/gui/keybindings.nix

{ pkgs, config }:
let
  cfg = config.jhome.gui.sway;
  passmenu = "${pkgs.jpassmenu}/bin/jpassmenu";
  selectAudio = "${pkgs.audiomenu}/bin/audiomenu --menu 'fuzzel --dmenu'";
  swayconf = config.wayland.windowManager.sway.config;
  mod = swayconf.modifier;
  workspaces = map toString [
    1
    2
    3
    4
    5
    6
    7
    8
    9
  ];
  dirs =
    map
      (dir: {
        key = swayconf.${dir};
        arrow = dir;
        direction = dir;
      })
      [
        "up"
        "down"
        "left"
        "right"
      ];
  joinKeys = builtins.concatStringsSep "+";
  # Generate a keybind from a modifier prefix and a key
  keycombo = prefix: key: joinKeys (prefix ++ [ key ]);
  modKeybind = keycombo [ mod ];
  modCtrlKeybind = keycombo [
    mod
    "Ctrl"
  ];
  modShiftKeybind = keycombo [
    mod
    "Shift"
  ];
  modCtrlShiftKeybind = keycombo [
    mod
    "Ctrl"
    "Shift"
  ];
  dir2resize.up = "resize grow height";
  dir2resize.down = "resize shrink height";
  dir2resize.right = "resize grow width";
  dir2resize.left = "resize shrink width";
  # Bind a key combo to an action
  genKeybind = prefix: action: key: { "${prefix key}" = "${action key}"; };
  genKey =
    prefix: action: genKeybind ({ key, ... }: prefix key) ({ direction, ... }: action direction);
  genArrow =
    prefix: action: genKeybind ({ arrow, ... }: prefix arrow) ({ direction, ... }: action direction);
  genArrowAndKey =
    prefix: action: key:
    (genKey prefix action key) // (genArrow prefix action key);
  # Move window
  moveWindowKeybinds = map (genArrowAndKey modShiftKeybind (dir: "move ${dir}")) dirs;
  # Focus window
  focusWindowKeybinds = map (genArrowAndKey modKeybind (dir: "focus ${dir}")) dirs;
  # Resize window
  resizeWindowKeybinds = map (genArrowAndKey modCtrlKeybind (dir: dir2resize.${dir})) dirs;
  # Move container to workspace
  moveWorkspaceKeybindings = map (genKeybind modShiftKeybind (
    number: "move container to workspace number ${number}"
  )) workspaces;
  # Focus workspace
  focusWorkspaceKeybindings = map (genKeybind modKeybind (
    number: "workspace number ${number}"
  )) workspaces;
  # Move container to Workspace and focus on it
  moveFocusWorkspaceKeybindings = map (genKeybind modCtrlShiftKeybind (
    number: "move container to workspace number ${number}; workspace number ${number}"
  )) workspaces;
in
builtins.foldl' (l: r: l // r)
  {
    "${mod}+Return" = "exec ${swayconf.terminal}";
    "${mod}+D" = "exec ${swayconf.menu}";
    "${mod}+P" = "exec ${passmenu}";
    "${mod}+F2" = "exec qutebrowser";
    "${mod}+Shift+Q" = "kill";
    "${mod}+F" = "fullscreen toggle";
    # Media Controls
    "${mod}+F10" = "exec ${selectAudio} select-sink";
    "${mod}+Shift+F10" = "exec ${selectAudio} select-source";
    "XF86AudioRaiseVolume" = "exec ${pkgs.avizo}/bin/volumectl up";
    "XF86AudioLowerVolume" = "exec ${pkgs.avizo}/bin/volumectl down";
    "XF86AudioMute" = "exec ${pkgs.avizo}/bin/volumectl toggle-mute";
    "XF86ScreenSaver" = "exec swaylock --image ${cfg.background}";
    "XF86MonBrightnessUp" = "exec ${pkgs.avizo}/bin/lightctl up";
    "XF86MonBrightnessDown" = "exec ${pkgs.avizo}/bin/lightctl down";
    # Floating
    "${mod}+Space" = "floating toggle";
    "${mod}+Shift+Space" = "focus mode_toggle";
    # Scratchpad
    "${mod}+Minus" = "scratchpad show";
    "${mod}+Shift+Minus" = "move scratchpad";
    # Layout
    "${mod}+e" = "layout toggle split";
    # Session control
    "${mod}+r" = "reload";
    "${mod}+Shift+m" = "exit";
  }
  (
    focusWindowKeybinds
    ++ moveWindowKeybinds
    ++ resizeWindowKeybinds
    ++ focusWorkspaceKeybindings
    ++ moveWorkspaceKeybindings
    ++ moveFocusWorkspaceKeybindings
  )