Give the auth token 60 seconds safty margin

Author: Pegasus

.gitignore

@@ -116,3 +116,4 @@ pypirc
 *State.json
 tests/parse_level_two.py
 certs/
+td/td_state.json

td/client.py

@@ -438,25 +438,25 @@ def _token_seconds(self, token_type: str = 'access_token') -> int:
         if token_type == 'access_token':
 
             # if the time to expiration is less than or equal to 0, return 0.
-            if not self.state['access_token'] or time.time() >= self.state['access_token_expires_at']:
+            if not self.state['access_token'] or time.time() + 60 >= self.state['access_token_expires_at']:
                 return 0
 
             # else return the number of seconds until expiration.
-            token_exp = int(self.state['access_token_expires_at'] - time.time())
+            token_exp = int(self.state['access_token_expires_at'] - time.time() - 60)
 
         # if needed check the refresh token.
         elif token_type == 'refresh_token':
 
             # if the time to expiration is less than or equal to 0, return 0.
-            if not self.state['refresh_token'] or time.time() >= self.state['refresh_token_expires_at']:
+            if not self.state['refresh_token'] or time.time() + 60 >= self.state['refresh_token_expires_at']:
                 return 0
 
             # else return the number of seconds until expiration.
-            token_exp = int(self.state['refresh_token_expires_at'] - time.time())
+            token_exp = int(self.state['refresh_token_expires_at'] - time.time() - 60)
 
         return token_exp
 
-    def _token_validation(self, nseconds: int = 5):
+    def _token_validation(self, nseconds: int = 60):
         """Checks if a token is valid.
 
         Verify the current access token is valid for at least N seconds, and