From 55b714dbdaa6948dc73f61512efc70eae8dfdbfc Mon Sep 17 00:00:00 2001
From: Julien Maille <julien.maille@gmail.com>
Date: Sat, 4 Dec 2021 14:13:46 +0100
Subject: [PATCH] added patch-dark-mode.ps1

---
 README.md           |  9 ++++++++-
 patch-dark-mode.ps1 | 24 ++++++++++++++++++++++++
 2 files changed, 32 insertions(+), 1 deletion(-)
 create mode 100644 patch-dark-mode.ps1

diff --git a/README.md b/README.md
index 1588006..0c20b13 100644
--- a/README.md
+++ b/README.md
@@ -66,7 +66,7 @@ xpui.js_repl_8008 = ,${1}58,
 
 ## Hide Window Controls
 Windows user, please edit your Spotify shortcut and add flag `--transparent-window-controls` after the Spotify.exe:
-To edit an taskbar shortcut, right click it, then right click Spotify in the list again.
+To edit a taskbar shortcut, right click it, then right click Spotify in the list again.
 
 <img src="https://raw.githubusercontent.com/JulienMaille/dribbblish-dynamic-theme/main/showcase-images/windows-shortcut-instruction.png" alt="img"> 
 
@@ -74,6 +74,13 @@ In addition to `--transparent-window-controls` you can set `Windows Top Bars` to
 
 <img src="https://raw.githubusercontent.com/JulienMaille/dribbblish-dynamic-theme/main/showcase-images/top-bars.png" alt="img" width="500px"> 
 
+## Follow system dark/light theme (Powershell)
+Automatic dark mode should work on MacOs and Linux out of the box.
+From Spotify > v1.1.70, dark mode is forced in Windows builds. You will need to patch Spotify.exe using this script:
+```powershell
+Invoke-WebRequest -UseBasicParsing "https://raw.githubusercontent.com/JulienMaille/dribbblish-dynamic-theme/master/patch-dark-mode.ps1" | Invoke-Expression
+```
+
 ## Uninstall
 ### Windows (PowerShell)
 ```powershell
diff --git a/patch-dark-mode.ps1 b/patch-dark-mode.ps1
new file mode 100644
index 0000000..376726e
--- /dev/null
+++ b/patch-dark-mode.ps1
@@ -0,0 +1,24 @@
+$sp = "$env:APPDATA\Spotify\Spotify.exe"
+Copy-Item $sp ($sp + ".backup")
+
+$bytes = [System.IO.File]::ReadAllBytes($sp);
+$toRemove = [System.Text.Encoding]::UTF8.GetBytes("force-dark-mode");
+
+for ($i = 0; $i -lt $bytes.Length; $i++) {
+    $found = $true
+    for ($j = 0; $j -lt $toRemove.Length; $j++) {
+        if ($bytes[$i + $j] -ne $toRemove[$j]) {
+            $found = $false;
+            break;
+        }
+    }
+
+    if ($found -eq $true) {
+        for ($j = 0; $j -lt $toRemove.Length; $j++) {
+            $bytes[$i + $j] = [byte]65;
+        }
+        break;
+    }
+}
+
+[System.IO.File]::WriteAllBytes($sp, $bytes);
\ No newline at end of file