discord: combine nixcord, vencord, and vesktop modules (#854)

Link: #854

Reviewed-by: Daniel Thwaites <[email protected]>
Reviewed-by: NAHO <[email protected]>

modules/discord/hm.nix

@@ -0,0 +1,67 @@
+{
+  config,
+  lib,
+  pkgs,
+  options,
+  ...
+}:
+let
+  template =
+    let
+      inherit (config.lib.stylix) colors;
+      inherit (config.stylix) fonts;
+    in
+    import ./template.nix { inherit colors fonts; };
+in
+{
+  options.stylix.targets =
+    let
+      inherit (config.lib.stylix) mkEnableTarget;
+    in
+    {
+      vencord.enable = mkEnableTarget "Vencord" true;
+      vesktop.enable = mkEnableTarget "Vesktop" true;
+      nixcord.enable = mkEnableTarget "Nixcord" true;
+    };
+
+  config = lib.mkIf config.stylix.enable (
+    lib.mkMerge [
+      (lib.mkIf config.stylix.targets.vencord.enable {
+        xdg.configFile."Vencord/themes/stylix.theme.css".text = template;
+      })
+
+      (lib.mkIf config.stylix.targets.vesktop.enable (
+        lib.mkMerge [
+          (lib.mkIf pkgs.stdenv.hostPlatform.isLinux {
+            xdg.configFile."vesktop/themes/stylix.theme.css".text = template;
+          })
+
+          (lib.mkIf pkgs.stdenv.hostPlatform.isDarwin {
+            home.file."Library/Application Support/vesktop/themes/stylix.theme.css".text =
+              template;
+          })
+        ]
+      ))
+
+      (lib.mkIf config.stylix.targets.nixcord.enable (
+        lib.optionalAttrs (builtins.hasAttr "nixcord" options.programs) {
+          xdg.configFile =
+            let
+              inherit (config.programs) nixcord;
+            in
+            lib.mkMerge [
+              (lib.mkIf nixcord.discord.enable {
+                "Vencord/themes/stylix.theme.css".text = template;
+              })
+
+              (lib.mkIf nixcord.vesktop.enable {
+                "vesktop/themes/stylix.theme.css".text = template;
+              })
+            ];
+
+          programs.nixcord.config.enabledThemes = [ "stylix.theme.css" ];
+        }
+      ))
+    ]
+  );
+}

modules/discord/testbeds/vencord.nix

@@ -0,0 +1,21 @@
+{ lib, pkgs, ... }:
+
+let
+  package = pkgs.discord.override {
+    withVencord = true;
+  };
+in
+{
+  stylix.testbed.application = {
+    enable = true;
+    name = "discord";
+    inherit package;
+  };
+
+  environment.systemPackages = [ package ];
+  nixpkgs.config.allowUnfreePredicate =
+    pkg:
+    builtins.elem (lib.getName pkg) [
+      "discord"
+    ];
+}

modules/discord/testbeds/vesktop.nix

@@ -0,0 +1,14 @@
+{ pkgs, ... }:
+
+let
+  package = pkgs.vesktop;
+in
+{
+  stylix.testbed.application = {
+    enable = true;
+    name = "vesktop";
+    inherit package;
+  };
+
+  environment.systemPackages = [ package ];
+}