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";
        }
      ];
    };
  };
}