From 22b3666cf0d8626a43437bc6fa8587030971fcfb Mon Sep 17 00:00:00 2001
From: SethBurkart123 <seth.burkart@hills.adventist.edu.au>
Date: Sun, 7 Apr 2024 16:30:57 +1000
Subject: [PATCH] add fallback colors for color functions in case of error

---
 src/SEQTA.ts                          | 1 +
 src/seqta/ui/colors/ColorLuminance.ts | 4 ++++
 src/seqta/ui/colors/Manager.ts        | 2 +-
 3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/SEQTA.ts b/src/SEQTA.ts
index 0f2d5e74..22ed0338 100644
--- a/src/SEQTA.ts
+++ b/src/SEQTA.ts
@@ -1556,6 +1556,7 @@ function CheckCurrentLesson(lesson: any, num: number) {
 }
 
 export function GetThresholdOfColor(color: any) {
+  if (!color) return 0
   // Case-insensitive regular expression for matching RGBA colors
   const rgbaRegex = /rgba?\(([^)]+)\)/gi
 
diff --git a/src/seqta/ui/colors/ColorLuminance.ts b/src/seqta/ui/colors/ColorLuminance.ts
index 2605f36d..ee796be5 100644
--- a/src/seqta/ui/colors/ColorLuminance.ts
+++ b/src/seqta/ui/colors/ColorLuminance.ts
@@ -15,6 +15,10 @@ function adjustLuminance(color: any, lum: any) {
 }
 
 export default function ColorLuminance(color: any, lum = 0) {
+  if (color == '' || color == null) {
+    // light cyan blue
+    return '#00bfff';
+  }
   const colorRegex = /rgba?\(([^)]+)\)/gi;  // Case-insensitive match for rgb() or rgba()
   
   if (color.toLowerCase().includes('gradient')) {
diff --git a/src/seqta/ui/colors/Manager.ts b/src/seqta/ui/colors/Manager.ts
index 53098581..f79ca4eb 100644
--- a/src/seqta/ui/colors/Manager.ts
+++ b/src/seqta/ui/colors/Manager.ts
@@ -18,7 +18,7 @@ let DarkMode: any = null;
 
 export function updateAllColors(storedSetting: any, newColor = null) {
   // Determine the color to use
-  const selectedColor = newColor || storedSetting.selectedColor;
+  const selectedColor = newColor || storedSetting.selectedColor == '' ? '#007bff' : storedSetting.selectedColor;
 
   if (storedSetting.transparencyEffects) {
     document.documentElement.classList.add('transparencyEffects');