From 2ca74ab3ef47143cb42403f207e438eacda08dc5 Mon Sep 17 00:00:00 2001
From: Anton Khorev <tony29@yandex.ru>
Date: Sat, 16 Nov 2024 17:51:50 +0300
Subject: [PATCH 1/1] Add auto/manual color scheme stylesheets depending on
 user preferences

---
 app/assets/stylesheets/parameters.scss               |  1 -
 app/assets/stylesheets/screen-auto-ltr.scss          |  3 +++
 app/assets/stylesheets/screen-auto-rtl.rtlcss.scss   |  3 +++
 app/assets/stylesheets/screen-ltr.scss               |  1 -
 app/assets/stylesheets/screen-manual-ltr.scss        |  3 +++
 app/assets/stylesheets/screen-manual-rtl.rtlcss.scss |  3 +++
 app/assets/stylesheets/screen-rtl.rtlcss.scss        |  1 -
 app/controllers/application_controller.rb            | 10 +++++++++-
 app/views/layouts/_head.html.erb                     |  6 +++++-
 app/views/layouts/site.html.erb                      |  4 ++--
 10 files changed, 28 insertions(+), 7 deletions(-)
 create mode 100644 app/assets/stylesheets/screen-auto-ltr.scss
 create mode 100644 app/assets/stylesheets/screen-auto-rtl.rtlcss.scss
 delete mode 100644 app/assets/stylesheets/screen-ltr.scss
 create mode 100644 app/assets/stylesheets/screen-manual-ltr.scss
 create mode 100644 app/assets/stylesheets/screen-manual-rtl.rtlcss.scss
 delete mode 100644 app/assets/stylesheets/screen-rtl.rtlcss.scss

diff --git a/app/assets/stylesheets/parameters.scss b/app/assets/stylesheets/parameters.scss
index 28bf56901..07549d69b 100644
--- a/app/assets/stylesheets/parameters.scss
+++ b/app/assets/stylesheets/parameters.scss
@@ -20,4 +20,3 @@ $table-border-factor: .1;
 $list-group-hover-bg: rgba(var(--bs-emphasis-color-rgb), .075);
 
 $enable-negative-margins: true;
-$color-mode-type: media-query;
diff --git a/app/assets/stylesheets/screen-auto-ltr.scss b/app/assets/stylesheets/screen-auto-ltr.scss
new file mode 100644
index 000000000..89e31599a
--- /dev/null
+++ b/app/assets/stylesheets/screen-auto-ltr.scss
@@ -0,0 +1,3 @@
+@use "common" with (
+  $color-mode-type: media-query
+);
diff --git a/app/assets/stylesheets/screen-auto-rtl.rtlcss.scss b/app/assets/stylesheets/screen-auto-rtl.rtlcss.scss
new file mode 100644
index 000000000..89e31599a
--- /dev/null
+++ b/app/assets/stylesheets/screen-auto-rtl.rtlcss.scss
@@ -0,0 +1,3 @@
+@use "common" with (
+  $color-mode-type: media-query
+);
diff --git a/app/assets/stylesheets/screen-ltr.scss b/app/assets/stylesheets/screen-ltr.scss
deleted file mode 100644
index c525060af..000000000
--- a/app/assets/stylesheets/screen-ltr.scss
+++ /dev/null
@@ -1 +0,0 @@
-@import "common";
diff --git a/app/assets/stylesheets/screen-manual-ltr.scss b/app/assets/stylesheets/screen-manual-ltr.scss
new file mode 100644
index 000000000..00f65f79a
--- /dev/null
+++ b/app/assets/stylesheets/screen-manual-ltr.scss
@@ -0,0 +1,3 @@
+@use "common" with (
+  $color-mode-type: data
+);
diff --git a/app/assets/stylesheets/screen-manual-rtl.rtlcss.scss b/app/assets/stylesheets/screen-manual-rtl.rtlcss.scss
new file mode 100644
index 000000000..00f65f79a
--- /dev/null
+++ b/app/assets/stylesheets/screen-manual-rtl.rtlcss.scss
@@ -0,0 +1,3 @@
+@use "common" with (
+  $color-mode-type: data
+);
diff --git a/app/assets/stylesheets/screen-rtl.rtlcss.scss b/app/assets/stylesheets/screen-rtl.rtlcss.scss
deleted file mode 100644
index c525060af..000000000
--- a/app/assets/stylesheets/screen-rtl.rtlcss.scss
+++ /dev/null
@@ -1 +0,0 @@
-@import "common";
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 7ce804ced..56d9a6763 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -281,7 +281,15 @@ class ApplicationController < ActionController::Base
     end
   end
 
-  helper_method :preferred_editor
+  def preferred_site_color_scheme
+    if current_user
+      current_user.preferences.find_by(:k => "site.color_scheme")&.v || "auto"
+    else
+      "auto"
+    end
+  end
+
+  helper_method :preferred_editor, :preferred_site_color_scheme
 
   def update_totp
     if Settings.key?(:totp_key)
diff --git a/app/views/layouts/_head.html.erb b/app/views/layouts/_head.html.erb
index 3c691612a..8cab52223 100644
--- a/app/views/layouts/_head.html.erb
+++ b/app/views/layouts/_head.html.erb
@@ -5,7 +5,11 @@
   <%= javascript_include_tag "turbo", :type => "module" %>
   <%= javascript_include_tag "application" %>
   <%= javascript_include_tag "i18n/#{I18n.locale}" %>
-  <%= stylesheet_link_tag "screen-#{dir}", :media => "screen" %>
+  <% if preferred_site_color_scheme == "auto" %>
+    <%= stylesheet_link_tag "screen-auto-#{dir}", :media => "screen" %>
+  <% else %>
+    <%= stylesheet_link_tag "screen-manual-#{dir}", :media => "screen" %>
+  <% end %>
   <%= stylesheet_link_tag "print-#{dir}", :media => "print" %>
   <%= stylesheet_link_tag "leaflet-all", :media => "screen, print" %>
   <%= render :partial => "layouts/meta" %>
diff --git a/app/views/layouts/site.html.erb b/app/views/layouts/site.html.erb
index 7c921658d..dd573d476 100644
--- a/app/views/layouts/site.html.erb
+++ b/app/views/layouts/site.html.erb
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="<%= I18n.locale %>" dir="<%= dir %>">
+<%= tag.html :lang => I18n.locale, :dir => dir, :data => { :bs_theme => (preferred_site_color_scheme if preferred_site_color_scheme != "auto") } do %>
   <%= render :partial => "layouts/head" %>
   <body class="<%= body_class %>">
     <%= render :partial => "layouts/header" %>
@@ -8,4 +8,4 @@
     <noscript><p><img src="<%= request.protocol %><%= Settings.matomo["location"] %>/matomo.php?idsite=<%= Settings.matomo["site"] %>" class="matomo" alt="" /></p></noscript>
     <% end -%>
   </body>
-</html>
+<% end %>
-- 
2.39.5