From df93edee15b59d965d3f3f7c136d2f45e3c7828d Mon Sep 17 00:00:00 2001
From: Tim Steinbach <tim@nequissimus.com>
Date: Fri, 2 Aug 2019 08:52:06 -0400
Subject: [PATCH] slack: Add update script

---
 .../instant-messengers/slack/dark-theme.nix   | 17 +++++++----------
 .../instant-messengers/slack/update.sh        | 19 +++++++++++++++++++
 2 files changed, 26 insertions(+), 10 deletions(-)
 create mode 100755 pkgs/applications/networking/instant-messengers/slack/update.sh

diff --git a/pkgs/applications/networking/instant-messengers/slack/dark-theme.nix b/pkgs/applications/networking/instant-messengers/slack/dark-theme.nix
index d815f0aff2dd..8fb92766efa6 100644
--- a/pkgs/applications/networking/instant-messengers/slack/dark-theme.nix
+++ b/pkgs/applications/networking/instant-messengers/slack/dark-theme.nix
@@ -1,22 +1,19 @@
-{ stdenv, fetchurl }:
+{ stdenv, fetchgit }:
 
-let
+stdenv.mkDerivation rec {
   rev = "e2a6a9cd9da70175881ab991220c86aa87179509";
-  sha256 = "1gw0kpszgflk3vqjlm5igd2rznh36mb2j1iqrcqi6pzxlpccv1lg";
   version = "2019-07-25";
-in stdenv.mkDerivation {
-  inherit version;
+  name = "slack-theme-black-${version}";
 
-  name = "slack-theme-black";
-  src = fetchurl {
-    url = "https://raw.githubusercontent.com/laCour/slack-night-mode/${rev}/css/raw/black.css";
-    inherit sha256;
+  src = fetchgit { inherit rev;
+    url = "https://github.com/laCour/slack-night-mode";
+    sha256 = "1jwxy63qzgvr83idsgcg7yhm9kn0ybfji1m964c5c6ypzcm7j10v";
   };
 
   dontUnpack = true;
 
   buildCommand = ''
     mkdir $out
-    cp $src $out/theme.css
+    cp $src/css/raw/black.css $out/theme.css
   '';
 }
diff --git a/pkgs/applications/networking/instant-messengers/slack/update.sh b/pkgs/applications/networking/instant-messengers/slack/update.sh
new file mode 100755
index 000000000000..e5f793883538
--- /dev/null
+++ b/pkgs/applications/networking/instant-messengers/slack/update.sh
@@ -0,0 +1,19 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl common-updater-scripts jq
+
+set -eu -o pipefail
+
+oldVersion="$(nix-instantiate --eval -E "with import ./. {}; slack-theme-black.version or (builtins.parseDrvName slack-theme-black.name).version" | tr -d '"')"
+latestSha="$(curl -L -s https://api.github.com/repos/laCour/slack-night-mode/commits\?sha\=master\&since\=${oldVersion} | jq -r '.[0].sha')"
+
+if [ ! "null" = "${latestSha}" ]; then
+  latestDate="$(curl -L -s https://api.github.com/repos/laCour/slack-night-mode/commits/${latestSha} | jq '.commit.author.date' | sed 's|"\(.*\)T.*|\1|g')"
+  update-source-version slack-theme-black "${latestSha}" --version-key=rev
+  update-source-version slack-theme-black "${latestDate}" --ignore-same-hash
+  nixpkgs="$(git rev-parse --show-toplevel)"
+  default_nix="$nixpkgs/pkgs/applications/networking/instant-messengers/slack/dark-theme.nix"
+  git add "${default_nix}"
+  git commit -m "slack-theme-black: ${oldVersion} -> ${latestDate}"
+else
+  echo "slack-theme-black is already up-to-date"
+fi