From ee1f6e20b2a1b7d28e8d3ae949ab0fd98cd85818 Mon Sep 17 00:00:00 2001
From: Tim Steinbach <tim@nequissimus.com>
Date: Mon, 3 Dec 2018 08:11:39 -0500
Subject: [PATCH] slack: Add dark-mode version

---
 .../instant-messengers/slack/default.nix        | 17 ++++++++++++++++-
 pkgs/top-level/all-packages.nix                 |  1 +
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/pkgs/applications/networking/instant-messengers/slack/default.nix b/pkgs/applications/networking/instant-messengers/slack/default.nix
index 529a530a4a36..51b6fb1d69c9 100644
--- a/pkgs/applications/networking/instant-messengers/slack/default.nix
+++ b/pkgs/applications/networking/instant-messengers/slack/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, dpkg, makeWrapper
+{ darkMode ? false, stdenv, fetchurl, dpkg, makeWrapper
 , alsaLib, atk, cairo, cups, curl, dbus, expat, fontconfig, freetype, glib
 , gnome2, gtk3, gdk_pixbuf, libnotify, libxcb, nspr, nss, pango
 , systemd, xorg }:
@@ -88,6 +88,21 @@ in stdenv.mkDerivation {
     substituteInPlace $out/share/applications/slack.desktop \
       --replace /usr/bin/ $out/bin/ \
       --replace /usr/share/ $out/share/
+  '' + stdenv.lib.optionalString darkMode ''
+    cat <<EOF >> $out/lib/slack/resources/app.asar.unpacked/src/static/ssb-interop.js
+    document.addEventListener('DOMContentLoaded', function() {
+    let tt__customCss = ".menu ul li a:not(.inline_menu_link) {color: #fff !important;}"
+    $.ajax({
+        url: 'https://cdn.rawgit.com/laCour/slack-night-mode/master/css/raw/black.css',
+        success: function(css) {
+            \$("<style></style>").appendTo('head').html(css + tt__customCss);
+            \$("<style></style>").appendTo('head').html('#reply_container.upload_in_threads .inline_message_input_container {background: padding-box #545454}');
+            \$("<style></style>").appendTo('head').html('.p-channel_sidebar {background: #363636 !important}');
+            \$("<style></style>").appendTo('head').html('#client_body:not(.onboarding):not(.feature_global_nav_layout):before {background: inherit;}');
+        }
+      });
+    });
+    EOF
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 73de74dd9b04..3f83f1fd9e9c 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -17350,6 +17350,7 @@ with pkgs;
   jackline = callPackage ../applications/networking/instant-messengers/jackline { };
 
   slack = callPackage ../applications/networking/instant-messengers/slack { };
+  slack-dark = self.slack.override { darkMode = true; };
 
   slack-cli = callPackage ../tools/networking/slack-cli { };