From 7b136032a56ca0bf1eac8d32bbf298a8dafdf976 Mon Sep 17 00:00:00 2001
From: John Titor <50095635+JohnRTitor@users.noreply.github.com>
Date: Fri, 14 Jun 2024 22:12:50 +0530
Subject: [PATCH] hyprland: add update script

Co-authored-by: fufexan <mihai@fufexan.net>
---
 pkgs/by-name/hy/hyprland/info.json   |  7 ++++++
 pkgs/by-name/hy/hyprland/package.nix | 16 ++++++++++---
 pkgs/by-name/hy/hyprland/update.sh   | 35 ++++++++++++++++++++++++++++
 3 files changed, 55 insertions(+), 3 deletions(-)
 create mode 100644 pkgs/by-name/hy/hyprland/info.json
 create mode 100644 pkgs/by-name/hy/hyprland/update.sh

diff --git a/pkgs/by-name/hy/hyprland/info.json b/pkgs/by-name/hy/hyprland/info.json
new file mode 100644
index 000000000000..4f9a2cf5b829
--- /dev/null
+++ b/pkgs/by-name/hy/hyprland/info.json
@@ -0,0 +1,7 @@
+{
+  "branch": "",
+  "commit_hash": "",
+  "commit_message": "",
+  "date": "",
+  "tag": ""
+}
diff --git a/pkgs/by-name/hy/hyprland/package.nix b/pkgs/by-name/hy/hyprland/package.nix
index 958e84ac78f0..467d12e83a69 100644
--- a/pkgs/by-name/hy/hyprland/package.nix
+++ b/pkgs/by-name/hy/hyprland/package.nix
@@ -47,6 +47,9 @@
 , hidpiXWayland ? false
 , enableNvidiaPatches ? false
 }:
+let
+  info = builtins.fromJSON (builtins.readFile ./info.json);
+in
 assert lib.assertMsg (!nvidiaPatches) "The option `nvidiaPatches` has been removed.";
 assert lib.assertMsg (!enableNvidiaPatches) "The option `enableNvidiaPatches` has been removed.";
 assert lib.assertMsg (!hidpiXWayland) "The option `hidpiXWayland` has been removed. Please refer https://wiki.hyprland.org/Configuring/XWayland";
@@ -68,9 +71,14 @@ stdenv.mkDerivation (finalAttrs: {
     sed -i "s#/usr#$out#" src/render/OpenGL.cpp
   '';
 
-  # used by version.sh
-  DATE = "2024-05-05";
-  HASH = finalAttrs.src.rev;
+  # variables used by generateVersion.sh script, and shown in `hyprctl version`
+  BRANCH = info.branch;
+  COMMITS = info.commit_hash;
+  DATE = info.date;
+  DIRTY = "";
+  HASH = info.commit_hash;
+  MESSAGE = info.commit_message;
+  TAG = info.tag;
 
   depsBuildBuild = [
     # to find wayland-scanner when cross-compiling
@@ -152,6 +160,8 @@ stdenv.mkDerivation (finalAttrs: {
 
   passthru.providedSessions = [ "hyprland" ];
 
+  passthru.updateScript = ./update.sh;
+
   meta = with lib; {
     homepage = "https://github.com/hyprwm/Hyprland";
     description = "Dynamic tiling Wayland compositor that doesn't sacrifice on its looks";
diff --git a/pkgs/by-name/hy/hyprland/update.sh b/pkgs/by-name/hy/hyprland/update.sh
new file mode 100644
index 000000000000..c729705f6b1d
--- /dev/null
+++ b/pkgs/by-name/hy/hyprland/update.sh
@@ -0,0 +1,35 @@
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash -p common-updater-scripts fd jq
+
+set -eou pipefail
+
+latest_release="$(curl --silent 'https://api.github.com/repos/hyprwm/Hyprland/releases/latest')"
+latest_tag="$(curl --silent 'https://api.github.com/repos/hyprwm/Hyprland/tags?per_page=1')"
+commit_hash="$(jq -r '.[0].commit.sha' <<<"$latest_tag")"
+latest_commit="$(curl --silent 'https://api.github.com/repos/hyprwm/Hyprland/commits/'"$commit_hash"'')"
+commit_message="$(jq -r '.commit.message' <<<"$latest_commit")"
+
+tag=$(jq -r '.tag_name' <<<"$latest_release")
+# drop 'v' prefix
+version="${tag#v}"
+
+branch=$(jq -r '.target_commitish' <<<"$latest_release")
+
+date=$(jq -r '.created_at' <<<"$latest_release")
+# truncate time
+date=${date%T*}
+
+# update version; otherwise fail
+update-source-version hyprland "$version" --ignore-same-hash
+
+# find hyprland dir
+files="$(fd --full-path /hyprland/ | head -1)"
+dir="${files%/*}"
+
+echo -e '{
+  "branch": "'"$branch"'",
+  "commit_hash": "'"$commit_hash"'",
+  "commit_message": "'"$commit_message"'",
+  "date": "'"$date"'",
+  "tag": "'"$tag"'"
+}' >"$dir/info.json"