nix-home/home/modules/linux/graphical/x11/i3.nix

{ pkgs, config, lib, ... }:

with lib;
let
  cfg = config.linux.graphical.x11;

  mod = "Mod4";
  workspaces = [
    "1: web"
    "2: chat"
    "3: code"
    "4: music"
    "5: extra"
    "6: 6"
    "7: 7"
    "8: 8"
    "9: 9"
    "10: 10"
  ];
  wsAttrs = builtins.listToAttrs (
    map
      (i: { name = toString (remainder i 10); value = builtins.elemAt workspaces (i - 1); })
      (range 1 11)
  );
  remainder = x: y: x - (builtins.div x y) * y;
  range = from: to:
    let
      f = cur: if cur == to then [ ] else [ cur ] ++ f (cur + 1);
    in
    f from;
in
{
  imports = [ ./i3/screenshot.nix ];

  options.linux.graphical.x11.enablei3 = mkEnableOption "Enable i3";

  config = mkIf (cfg.enablei3) {

    ## i3 window manager
    xsession.windowManager.i3 = {
      enable = true;
      config.assigns = {
        "${wsAttrs."1"}" = [{ class = "^firefox$"; }];
        "${wsAttrs."2"}" = [{ class = "^discord$"; }];
      };
      config.bars = [{
        command = "${pkgs.i3-gaps}/bin/i3bar -t";
        statusCommand = "${pkgs.i3status-rust}/bin/i3status-rs ~/.config/i3status-rust/config-default.toml";
        position = "top";
        colors = {
          background = "#00000080";
          statusline = "#ffffff";
          separator = "#666666";

          focusedWorkspace = { background = "#4c7899"; border = "#285577"; text = "#ffffff"; };
          activeWorkspace = { background = "#333333"; border = "#5f676a"; text = "#ffffff"; };
          inactiveWorkspace = { background = "#333333"; border = "#222222"; text = "#888888"; };
          urgentWorkspace = { background = "#2f343a"; border = "#900000"; text = "#ffffff"; };
          bindingMode = { background = "#2f343a"; border = "#900000"; text = "#ffffff"; };
        };
      }];
      config.focus.newWindow = "none";
      config.fonts = { names = [ "FantasqueSansMono Nerd Font Mono" "monospace" ]; size = 11.0; };
      config.gaps.outer = 5;
      config.gaps.inner = 5;
      config.gaps.smartGaps = true;
      config.modifier = mod;
      config.terminal = "alacritty";
      config.window.titlebar = false;

      # Keybindings
      config.keybindings = lib.mkOptionDefault ({
        ## vim-style movements
        "${mod}+h" = "focus left";
        "${mod}+j" = "focus down";
        "${mod}+k" = "focus up";
        "${mod}+l" = "focus right";
        "${mod}+Shift+h" = "move left";
        "${mod}+Shift+j" = "move down";
        "${mod}+Shift+k" = "move up";
        "${mod}+Shift+l" = "move right";
        ## Splits
        "${mod}+v" = "split v";
        "${mod}+Shift+v" = "split h";
        ## Run
        "${mod}+r" = "exec ${pkgs.dmenu}/bin/dmenu_run";
        "${mod}+d" = "exec i3-dmenu-desktop --dmenu='${pkgs.dmenu}/bin/dmenu -i'";
      } // (
        builtins.listToAttrs (lib.flatten (map
          (key: [
            {
              name = "${mod}+${key}";
              value = "workspace ${builtins.getAttr key wsAttrs}";
            }
            {
              name = "${mod}+Shift+${key}";
              value = "move to workspace ${builtins.getAttr key wsAttrs}";
            }
          ])
          (builtins.attrNames wsAttrs))
        )));

      # Workspace
      config.defaultWorkspace = "workspace ${builtins.getAttr "1" wsAttrs}";
      config.startup = [
        { command = "firefox"; }
        { command = "discord"; }
        { command = "dex -ae i3"; }
        { command = "ibus-daemon -drxR"; }
      ] ++
      (
        if (config.linux.graphical.wallpaper != "")
        then [{ command = "${pkgs.feh}/bin/feh --bg-fill ${config.linux.graphical.wallpaper}"; }]
        else [ ]
      );
    };


    # i3status
    programs.i3status-rust.enable = true;
    programs.i3status-rust.bars.default = {
      icons = "material-nf";
      theme = "native";
      settings = {
        icons_format = " <span font_family='FantasqueSansMono Nerd Font'>{icon}</span> ";
      };
      blocks = [
        # {
        #   block = "bluetooth";
        #   mac = "5C:52:30:D8:E2:9D";
        #   format = "Airpods Pro {percentage}";
        #   format_unavailable = "Airpods Pro XX";
        # }
        {
          block = "cpu";
          format = "{utilization}";
        }
        {
          block = "hueshift";
        }
        {
          block = "memory";
        }
        {
          block = "net";
        }
        {
          block = "sound";
        }
        {
          block = "time";
        }
      ];
    };
  };
}