add support for GUC proxy, move safeTraverse to ythdd_globals

ythdd_globals.py

@@ -86,8 +86,21 @@ def translateLinks(link):
 
 	link = link.replace("https://i.ytimg.com/", config['general']['public_facing_url'])
 	link = link.replace("https://yt3.ggpht.com/", config['general']['public_facing_url'] + "ggpht/")
+	link = link.replace("https://yt3.googleusercontent.com/", config['general']['public_facing_url'] + "guc/")
 
 	return link
 
 def getUptime():
-	return int(time.time()) - starttime
+	return int(time.time()) - starttime
+
+def safeTraverse(obj: dict, path: list, default=None):
+	result = obj
+	try:
+		for x in path:
+			#print(f"traversing {result} with respect to {x}")
+			result = result[x]
+	except KeyError:
+		result = default
+		print(f"error reading: {' -> '.join(path)} - returning: {default}")
+	finally:
+		return result