Make grams_gold dynamic if it's URL type

Previously, grams_gold will fetch the value if it's URL type and the value will be use it  again and again until it's stopped. The fetch only works on first time it started, after that it doesn't fetch anymore

Now, the grams_gold will fetch the value everytime the app receive gold-rate event

firefly_iii_treasury_id_update/main.py

@@ -62,9 +62,19 @@ async def _run_main(http_session, grams_gold, api_key, transaction_id, firefly_i
                 )
                 continue
 
+            # Determine if grams_gold is a url location, a file, or just hardcoded numbers
+            if grams_gold.startswith("http"):
+                res = await http_session.get(grams_gold)
+                actual_gold = float(await res.text())
+            elif os.path.exists(grams_gold):
+                with open(grams_gold, "r") as o:
+                    actual_gold = float(o.read())
+            else:
+                actual_gold = float(grams_gold)
+
             data = json.loads(data["data"])
             selling_price = get_selling_price(data)
-            amount = int(selling_price * grams_gold)
+            amount = int(selling_price * actual_gold)
 
             # TODO: Create update request to REST API firefly-iii
             log.info(
@@ -99,16 +109,6 @@ async def run_main():
     elif grams_gold is None:
         raise MissingArguments("there is no GRAMS_GOLD in environment")
 
-    # Determine if grams_gold is a url location, a file, or just hardcoded numbers
-    if grams_gold.startswith("http"):
-        res = await http_session.get(grams_gold)
-        grams_gold = float(await res.text())
-    elif os.path.exists(grams_gold):
-        with open(grams_gold, "r") as o:
-            grams_gold = float(o.read())
-    else:
-        grams_gold = float(grams_gold)
-
     while True:
         try:
             await _run_main(