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

let
  programName   = "zsh";
  programAssets = ../../../assets/system/conf/${programName};

  # Read the config file that will be injected into Zsh
  zshInitFile  = "${programAssets}/zsh.conf";

  # Toggle for this module
  enableProgram = config.enableZsh or false;

  # User reference
  username = config.defaultUser or "henrov";
in
{
  # Top-level toggle
  options.enableZsh = lib.mkEnableOption "Enable Zsh terminal with Oh-My-Zsh";

  # Only apply configuration if enabled
  config = lib.mkIf enableProgram {

    # Install Zsh system-wide
    environment.systemPackages = [ pkgs.zsh ];

    # Enable Zsh + Oh-My-Zsh
    programs.zsh.enable = true;
    programs.zsh.ohMyZsh.enable = true;
    programs.zsh.ohMyZsh.theme = "catppuccin-mocha";
    programs.zsh.ohMyZsh.plugins = [
      "git"
      "docker"
      "direnv"
      "zsh-autosuggestions"
      "zsh-completions"
      "zsh-history-substring-search"
    ];

    # Use the contents of zsh.conf as shellInit
    programs.zsh.shellInit = builtins.readFile zshInitFile;
  };
}