From 122cce3bc7bb8e3674171922d04d3274e38647ee Mon Sep 17 00:00:00 2001
From: Shadowfacts <me@shadowfacts.net>
Date: Sat, 30 Jan 2021 14:15:17 -0500
Subject: [PATCH] Disable blurhashes in debug builds

---
 Tusker/Vendor/BlurHashDecode.swift | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/Tusker/Vendor/BlurHashDecode.swift b/Tusker/Vendor/BlurHashDecode.swift
index 9e9f6a6e50..fcd1a6a1a5 100644
--- a/Tusker/Vendor/BlurHashDecode.swift
+++ b/Tusker/Vendor/BlurHashDecode.swift
@@ -2,9 +2,17 @@
 /// From https://github.com/woltapp/blurhash/blob/b23214ddcab803fe1ec9a3e6b20558caf33a23a5/Swift/BlurHashDecode.swift
 import UIKit
 
+// blurhashes are disabled in debug builds because this code is hideously slow when not optimized by the compiler
+#if DEBUG
+fileprivate let blurHashesEnabled = ProcessInfo.processInfo.environment.keys.contains("DEBUG_BLUR_HASH")
+#else
+fileprivate let blurHashesEnabled = true
+#endif
+
 extension UIImage {
     public convenience init?(blurHash: String, size: CGSize, punch: Float = 1) {
-        guard blurHash.count >= 6 else { return nil }
+        guard blurHashesEnabled,
+              blurHash.count >= 6 else { return nil }
 
         let sizeFlag = String(blurHash[0]).decode83()
         let numY = (sizeFlag / 9) + 1