bot new commands and funcs + api updates

telegram_bot/api_handling/api_handler.py

@@ -12,6 +12,7 @@ __license__ = "None"
 import sys
 import os
 import requests as r
+from croniter import croniter
 
 
 
@@ -32,7 +33,6 @@ class API_Handler:
         delete_share(user_id, symbol): deletes the share of the user
         get_user_transactions(user_id): gets the transactions of the user
         set_transaction(user_id, transaction): sets the transaction of the user
-        delete_transaction(user_id, transaction): deletes the transaction of the user
         get_user_portfolio(user_id): gets the portfolio of the user
         set_portfolio(user_id, portfolio): sets the portfolio of the user
         delete_portfolio(user_id, portfolio): deletes the portfolio of the user
@@ -322,6 +322,10 @@ class API_Handler:
         Returns:
             int: status code
         """
+        if not croniter.is_valid(cron_interval):
+            print("Error: Invalid cron format")
+            return -1
+
         with r.Session() as s:
             headers = {'Authorization': 'Bearer ' + self.token + ":" + str(user_id)}
             req = s.put(self.db_adress + "/user/setCron", json={"cron": cron_interval}, headers=headers)