substitute_source() completed

twoot.py

@@ -146,13 +146,15 @@ def _remove_trackers_fragment(fragment_str):
     return fragment_str
 
 
-def _substitute_source(domain):
+def substitute_source(orig_url):
     """
-    private function
-    param domain: Domain name to substitute
-    :return: domain or sustitute if applicable
+    param orig_url: url to check for substitutes
+    :return: url with replaced domains
     """
 
+    parsed_url = urlparse(orig_url)
+    domain = parsed_url.netloc
+
     logging.debug("Checking domain " + domain)
 
     # Handle twitter
@@ -173,7 +175,17 @@ def _substitute_source(domain):
         domain = reddit_subst[random.randint(0, len(reddit_subst) - 1)]
         logging.debug("Replaced reddit.com by " + domain)
 
-    return domain
+    dest_url = urlunparse([
+        parsed_url.scheme,
+        _substitute_source(parsed_url.netloc),
+        parsed_url.path,
+        parsed_url.params,
+        _remove_trackers_query(parsed_url.query),
+        _remove_trackers_fragment(parsed_url.fragment)
+    ])
+
+
+    return dest_url
 
 def clean_url(dirty_url):
     """