From 5c48aa8c3ef48369235bc3a222bbbe5e08c6bd93 Mon Sep 17 00:00:00 2001
From: Chocobozzz <me@florianbigard.com>
Date: Tue, 11 May 2021 15:41:13 +0200
Subject: Default to dark theme if requested by user

---
 CHANGELOG.md                               |  2 +-
 client/src/app/core/theme/theme.service.ts | 14 +++++++++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6d9f09833..a37ee604d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -67,7 +67,7 @@
 
 ### Features
 
- * :tada: Most robust uploads using a resumable upload endpoint [#3933](https://github.com/Chocobozzz/PeerTube/pull/3933)
+ * :tada: More robust uploads using a resumable upload endpoint [#3933](https://github.com/Chocobozzz/PeerTube/pull/3933)
  * Accessibility/UI:
    * :tada: Redesign channel and account page
    * :tada: Increase video miniature size
diff --git a/client/src/app/core/theme/theme.service.ts b/client/src/app/core/theme/theme.service.ts
index 4c4611d01..e7a5ae17a 100644
--- a/client/src/app/core/theme/theme.service.ts
+++ b/client/src/app/core/theme/theme.service.ts
@@ -82,7 +82,19 @@ export class ThemeService {
       : this.userService.getAnonymousUser().theme
 
     if (theme !== 'instance-default') return theme
-    return this.serverConfig.theme.default
+
+    const instanceTheme = this.serverConfig.theme.default
+    if (instanceTheme !== 'default') return instanceTheme
+
+    // Default to dark theme if available and wanted by the user
+    if (
+      this.themes.find(t => t.name === 'dark') &&
+      window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches
+    ) {
+      return 'dark'
+    }
+
+    return instanceTheme
   }
 
   private loadTheme (name: string) {
-- 
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