From db81831dc0edd2760cc35c5f4a3d2162d412e812 Mon Sep 17 00:00:00 2001
From: "Gustavo \"Guz\" L. de Mello" <contact.guz013@gmail.com>
Date: Sun, 7 Jan 2024 15:14:21 -0300
Subject: [PATCH] feat: systems/set-user

Small "helper" for handling users
---
 hosts/desktop/configuration.nix    | 28 ++++-------
 hosts/desktop/home.nix             | 24 +---------
 modules/nixos/systems/set-user.nix | 74 ++++++++++++++++++++++++++++++
 3 files changed, 85 insertions(+), 41 deletions(-)
 create mode 100644 modules/nixos/systems/set-user.nix

diff --git a/hosts/desktop/configuration.nix b/hosts/desktop/configuration.nix
index 21f9b65..eed4912 100644
--- a/hosts/desktop/configuration.nix
+++ b/hosts/desktop/configuration.nix
@@ -7,6 +7,7 @@
 {
   imports = [
     ../../modules/nixos/config/host.nix
+    ../../modules/nixos/systems/set-user.nix
     # Include the results of the hardware scan.
     ./hardware-configuration.nix
   ];
@@ -26,27 +27,17 @@
 
   programs.zsh.enable = true;
   # Define a user account. Don't forget to set a password with ‘passwd’.
-  users.users."guz" = {
-    isNormalUser = true;
-    description = "Guz";
-    extraGroups = [ "networkmanager" "wheel" ];
-    packages = with pkgs; [
-      firefox
-      #  thunderbird
-    ];
-    shell = pkgs.zsh;
-  };
-
-  home-manager = {
-    extraSpecialArgs = { inherit inputs; };
-    users = {
-      "guz" = import ./home.nix;
-    };
-  };
+  set-user.users = [
+    {
+      username = "guz";
+      shell = pkgs.zsh;
+      home = import ./home.nix;
+    }
+  ];
 
   services.flatpak.enable = true;
 
-  environment.pathsToLink = [ "/share/zsh" ];
+  environment.pathsToLink = [ " /share/zsh " ];
 
   # Some programs need SUID wrappers, can be configured further or are
   # started in user sessions.
@@ -69,3 +60,4 @@
 
 
 }
+
diff --git a/hosts/desktop/home.nix b/hosts/desktop/home.nix
index 26c1154..15ee48f 100644
--- a/hosts/desktop/home.nix
+++ b/hosts/desktop/home.nix
@@ -2,31 +2,11 @@
 
 {
   imports = [
-    # inputs.flatpaks.homeManagerModules.default
-    inputs.nix-flatpak.homeManagerModules.nix-flatpak
     ../../modules/home-manager/theme.nix
     ../../modules/home-manager/config/terminal.nix
   ];
 
   # theme.accent = "f38ba8";
-  # Home Manager needs a bit of information about you and the paths it should
-  # manage.
-  home.username = "guz";
-  home.homeDirectory = "/home/guz";
-
-
-  # This value determines the Home Manager release that your configuration is
-  # compatible with. This helps avoid breakage when a new Home Manager release
-  # introduces backwards incompatible changes.
-  #
-  # You should not change this value, even if you update Home Manager. If you do
-  # want to update the value, then make sure to first check the Home Manager
-  # release notes.
-  home.stateVersion = "23.11"; # Please read the comment before changing.
-
-  # The home.packages option allows you to install Nix packages into your
-  # environment.
-
 
   programs.bash = {
     enable = true;
@@ -46,6 +26,7 @@
   ];
   home.packages = with pkgs; [
     obsidian
+    firefox
     # # It is sometimes useful to fine-tune packages, for example, by applying
     # # overrides. You can do that directly here, just don't forget the
     # # parentheses. Maybe you want to install Nerd Fonts with a limited number of
@@ -94,7 +75,4 @@
   home.sessionVariables = {
     # EDITOR = "emacs";
   };
-
-  # Let Home Manager install and manage itself.
-  programs.home-manager.enable = true;
 }
diff --git a/modules/nixos/systems/set-user.nix b/modules/nixos/systems/set-user.nix
new file mode 100644
index 0000000..8e8def4
--- /dev/null
+++ b/modules/nixos/systems/set-user.nix
@@ -0,0 +1,74 @@
+{ config, pkgs, inputs, lib, ... }:
+
+let
+  cfg = config.set-user;
+in
+{
+  options.set-user = {
+    users = lib.mkOption {
+      default = [ ];
+      # TODO: Fix types
+      /* type = lib.types.listOf {
+        username = lib.types.str;
+        description = lib.types.str;
+        normalUser = lib.types.bool;
+        shell = lib.types.package;
+        packages = lib.types.pkgs;
+        extraGroups = lib.types.listOf lib.types.str;
+        home = lib.types.anything;
+        flatpak = lib.types.bool;
+      }; */
+    };
+  };
+  config =
+    let
+      home-default = user: {
+        imports = [
+          (
+            if user?flatpak && !user.flatpak
+            then null
+            else inputs.nix-flatpak.homeManagerModules.nix-flatpak
+          )
+        ];
+        programs.home-manager.enable = true;
+        home.username = user.username;
+        home.homeDirectory = "/home/${user.username}";
+        home.stateVersion = "23.11"; # Do not change
+      };
+    in
+    {
+      users.users = (builtins.listToAttrs
+        (map
+          (u: {
+            name = u.username;
+            value = {
+              description =
+                if u?description then u.description else u.username;
+              isNormalUser =
+                if u?normalUser then u.normalUser else true;
+              shell =
+                if u?shell then u.shell else pkgs.bash;
+              packages =
+                if u?packages then u.packages else [ ];
+              extraGroups =
+                if u?extraGroups then u.extraGroups else [ "networkmanager" "wheel" ];
+            };
+          })
+          cfg.users
+        )
+      );
+      home-manager.extraSpecialArgs = { inherit inputs; };
+      home-manager.users = (builtins.listToAttrs
+        (map
+          (u: {
+            name = u.username;
+            value =
+              if u?home then lib.mkMerge [ (home-default u) u.home ]
+              else (home-default u);
+          })
+          cfg.users
+        )
+      );
+    };
+}
+