barbar: init plugin

plugins/default.nix

@@ -20,6 +20,7 @@
     ./utils/endwise.nix
     ./utils/telescope.nix
     ./utils/nvim-autopairs.nix
+    ./utils/barbar.nix
 
     ./languages/treesitter.nix
     ./languages/nix.nix

plugins/utils/barbar.nix

@@ -0,0 +1,58 @@
+{ lib, pkgs, config, ... }:
+with lib;
+let
+  cfg = config.programs.nixvim.plugins.barbar;
+in
+{
+  options.programs.nixvim.plugins.barbar = {
+    enable = mkEnableOption "Enable barbar.nvim";
+
+    animations = mkOption {
+      type = types.nullOr types.bool;
+      default = null;
+      description = "Enable animations";
+    };
+
+    autoHide = mkOption {
+      type = types.nullOr types.bool;
+      default = null;
+      description = "Auto-hide the tab bar when there is only one buffer";
+    };
+
+    closeable = mkOption {
+      type = types.nullOr types.bool;
+      default = null;
+      description = "Enable the close button";
+    };
+
+    icons = mkOption {
+      type = with types; nullOr (oneOf [bool (enum ["numbers both"])]);
+      default = null;
+      description = "Enable/disable icons";
+    };
+
+    iconCustomColors = mkOption {
+      type = with types; nullOr (oneOf [bool str]);
+      default = null;
+      description = "Sets the icon highlight group";
+    };
+
+    # Keybinds concept:
+    # keys = {
+    #   previousBuffer = mkBindDef "normal" "Previous buffer" { action = ":BufferPrevious<CR>"; silent = true; } "<A-,>";
+    #   nextBuffer = mkBindDef "normal" "Next buffer" { action = ":BufferNext<CR>"; silent = true; } "<A-.>";
+    #   movePrevious = mkBindDef "normal" "Re-order to previous" { action = ":BufferMovePrevious<CR>"; silent = true; } "<A-<>";
+    #   moveNext = mkBindDef "normal" "Re-order to next" { action = ":BufferMoveNext<CR>"; silent = true; } "<A->>";
+
+    #   # TODO all the other ones.....
+    # };
+  };
+
+  config.programs.nixvim = mkIf cfg.enable {
+    extraPlugins = with pkgs.vimPlugins; [
+      barbar-nvim nvim-web-devicons
+    ];
+
+    # maps = genMaps cfg.keys;
+  };
+}