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

let
  username    = config.users.users.defaultUser or "henrov";
  homeDir     = "/home/${username}";
  programName = "zsh";
  programAssets = ../../../assets/system/conf/${programName};
  zshInitFile  = "${programAssets}/zsh.conf";
in
{
  #################################
  # SYSTEM-WIDE INSTALLATION ONLY #
  #################################

  # Install Zsh and Oh-My-Zsh globally
  environment.systemPackages = [
    pkgs.zsh
    pkgs.oh-my-zsh  # this is the Nixpkgs oh-my-zsh package
  ];

  #######################################
  # USER-SPECIFIC CONFIGURATION (henrov)#
  #######################################

  # Copy a pre-built .zshrc into henrov's home
  environment.etc."zshrc-${username}".text = ''
    # Point Zsh to the Oh-My-Zsh installation in /run/current-system/sw
    export ZSH=${pkgs.oh-my-zsh}/share/oh-my-zsh
    ZSH_THEME="catppuccin-mocha"
    plugins=(git docker direnv zsh-completions)

    # Load oh-my-zsh
    source $ZSH/oh-my-zsh.sh

    # Inject custom zsh.conf
    ${builtins.readFile zshInitFile}
  '';

  # Symlink it to user's ~/.zshrc
  users.users."${username}".shell = pkgs.zsh;
  users.users."${username}".extraHomeFiles = {
    ".zshrc" = "/etc/zshrc-${username}";
  };
}