rework logging, fix calculation error

src/backend/semester.py

@@ -11,7 +11,9 @@ class Semester:
     _semester: str | None = None
     _month: int | None = datetime.datetime.now().month
     value: str = None
-
+    logger.debug(
+        f"Initialized Semester class with values: month: {_month}, semester: {_semester}, year {_year}"
+    )
     def __post_init__(self):
         if isinstance(self._year, str):
             self._year = int(self._year)
@@ -27,7 +29,7 @@ class Semester:
         return self.value
 
     def generateSemester(self):
-        if self._month < 4 or self._month < 9:
+        if self._month <= 3 or self._month > 9:
             self._semester = "WiSe"
         else:
             self._semester = "SoSe"
@@ -36,11 +38,12 @@ class Semester:
     def computeValue(self):
         # year is only last two digits
         year = self._year
+        valueyear = str(year)
         if self._semester == "WiSe":
             if self._month < 4:
                 valueyear = str(year - 1) + "/" + str(year)
-        else:
-            valueyear = str(year)
+            else:
+                valueyear = str(year) + "/" + str(year + 1)
         self.value = f"{self._semester} {valueyear}"
 
     @logger.catch