Tree: Use unwrap and coalesce for optional handling

Python doesn't have proper handling of optionals. The only way to
handle them is checking via an if statement if the value is None or
by using the "or" keyword to unwrap optionals.

Previously, I used the "or" method to unwrap, but this caused issues
due to falsy values falling back to the default. This is especially
the case with booleans were "False" changed to "True".

Instead, add two new functions: unwrap and coalesce. Both function
to properly implement a functional way of "None" coalescing.

Signed-off-by: kingbri <bdashore3@proton.me>

utils.py

@@ -30,3 +30,14 @@ def get_generator_error(message: str):
 
 def get_sse_packet(json_data: str):
     return f"data: {json_data}\n\n"
+
+# Unwrap function for Optionals
+def unwrap(wrapped, default = None):
+    if wrapped is None:
+        return default
+    else:
+        return wrapped
+
+# Coalesce function for multiple unwraps
+def coalesce(*args):
+    return next((arg for arg in args if arg is not None), None)