nixos/user/modules/tmux/default.nix

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

with lib;
let
  cfg = config.modules.user.tmux;
  gui = config.modules.user.gui.wm;

  wm = {
    enable = builtins.any (mod: mod.enable or false) (builtins.attrValues gui);
  };

in
{ options.modules.user.tmux = { enable = mkEnableOption "Enable tmux module"; };
  config = mkIf cfg.enable {
    programs.tmux = {
      enable = true;
      newSession = true;
      disableConfirmationPrompt = true;
      keyMode = "vi";
      mouse = if wm.enable then true else false;

      prefix = "M";
      #shell = "\${pkgs.bash}/bin/bash";

      plugins = with pkgs.tmuxPlugins; [
        {
          plugin = tilish;
          extraConfig = ''
            set -g @tilish-default 'tiled'
          '';
        }
      ];

      extraConfig = import ./config/tmux.nix;
    };

    # Auto-start tmux only on local TTY (not SSH, not in tmux already)
    programs.bash.profileExtra = mkIf (!wm.enable) ''
      if [ -t 0 ] && [[ $- == *i* ]] && [ -z "$DISPLAY" ] && [ -z "$TMUX" ] && [ -z "$SSH_TTY" ] && [ -z "$SSH_CONNECTION" ]; then
        exec tmux
      fi
    '';
  };
}