diff --git a/timebot/timebot.py b/timebot/timebot.py
index e8c77f2..5f0c260 100644
--- a/timebot/timebot.py
+++ b/timebot/timebot.py
@@ -292,7 +292,15 @@ class TimeBot:
         """
         self.mobatime_api.save_entry(punch_datetime, PunchCodes.BREAK_END.value, note="pause ende").raise_for_status()
 
-    def smart_punch(self, punch_datetime) -> None:
+    def smart_punch(self, punch_datetime: datetime.datetime) -> None:
+        """
+        Perform smart punch for today.
+
+        This tries to detect your last action and will create entries in to following order:
+        punch_in -> break_start -> break_end -> punch_out
+
+        :param datetime.datetime punch_datetime: a datetime object to identify the current day aka. today
+        """
         last_punch = self.mobatime_api.get_entries(
             1,
             start_date=punch_datetime.replace(hour=0, minute=0, second=0, microsecond=0),
@@ -302,16 +310,16 @@ class TimeBot:
         if not last_punch or last_punch[0]["entryNumber"] is None:
             self.logger.debug("could not detect any time entry for today... punching in")
             method = "punch_in"
-        elif last_punch[0]["entryNumber"] == PunchCodes.COMING:
+        elif last_punch[0]["entryNumber"] == PunchCodes.COMING.value:
             self.logger.debug("your last entry was `punch_in`... starting break")
             method = "break_start"
-        elif last_punch[0]["entryNumber"] == PunchCodes.BREAK_START:
+        elif last_punch[0]["entryNumber"] == PunchCodes.BREAK_START.value:
             self.logger.debug("your last entry was `break_start`... ending break")
             method = "break_end"
-        elif last_punch[0]["entryNumber"] == PunchCodes.BREAK_END:
+        elif last_punch[0]["entryNumber"] == PunchCodes.BREAK_END.value:
             self.logger.debug("your last entry was `break_end`... punching out")
             method = "punch_out"
-        elif last_punch[0]["entryNumber"] == PunchCodes.LEAVING:
+        elif last_punch[0]["entryNumber"] == PunchCodes.LEAVING.value:
             self.logger.error("your last entry was `punch_out`... punching in again with this command is not supported")
             sys.exit(1)
         if method is None:
@@ -320,12 +328,18 @@ class TimeBot:
             exit(1)
         self.logger.info("running `{}` with date `{}` and time `{}`".format(
             method,
-            punch_datetime.strftime(DateFormats.SIMPLE_DATE),
-            punch_datetime.strftime(DateFormats.SIMPLE_TIME),
+            punch_datetime.strftime(DateFormats.SIMPLE_DATE.value),
+            punch_datetime.strftime(DateFormats.SIMPLE_TIME.value),
         ))
         getattr(self, method)(punch_datetime)
 
     def status(self) -> str:
+        """
+        Get and format Mobatime tracking data and and account information.
+        The output ist formatted to print it to the console.
+
+        :return: preformatted status text
+        """
         tracking_data = self.mobatime_api.get_tracking_data()
         account_info = self.mobatime_api.get_account_information()
         ret = "Tracking Info:\n"
@@ -338,11 +352,16 @@ class TimeBot:
         return ret
 
     def get_hours_present(self) -> datetime.timedelta:
+        """
+        Calculate today's hours present.
+
+        :return: timedelta object with today's hours present
+        """
         now = datetime.datetime.now()
         punches = self.mobatime_api.get_entries(
             None,
             start_date=now.replace(hour=0, minute=0, second=0, microsecond=0),
             end_date=now.replace(hour=0, minute=0, second=0, microsecond=0),
         )
-        time_delta = now - datetime.datetime.strptime(punches[0]["dateTime"], DateFormats.FULL_DATETIME.value)
+        time_delta = now - datetime.datetime.strptime(punches[-1]["dateTime"], DateFormats.FULL_DATETIME.value)
         return time_delta