Implement __getUserAlias in Item class

api/ECNQueue.py

@@ -35,6 +35,7 @@ def __init__(self, queue: str, number: int) -> None:
 		self.isLocked = self.__isLocked()
 		self.userEmail = self.__getUserEmail()
 		self.userName = self.__getUserName()
+		self.userAlias = self.__getUserAlias()
 
 	def __getLastUpdated(self) -> float:
 		"""Returns last modified time of item reported by the filesystem in mm-dd-yy hh:mm am/pm format.
@@ -191,14 +192,30 @@ def __parseFromData(self, data: str) -> str:
 
 		if data == "userName": return userName
 		elif data == "userEmail": return userEmail
-		else: raise ValueError(str(data) + "is not a valid option. data must be \"userName\" or \"userEmail\".")
+		else: raise ValueError("data='" + str(data) + "' is not a valid option. data must be \"userName\" or \"userEmail\".")
 
 	def __getUserName(self, data="userName") -> Union[str, None]:
 		return self.__parseFromData(data)
 
 	def __getUserEmail(self, data="userEmail") -> str:
 		return self.__parseFromData(data)
 
+	def __getUserAlias(self) -> Union[str, None]:
+		"""Returns user's Career Account alias if present.
+		If Career Account alias isn't present, returns none.
+
+		Example: Email from campb303@purdue.edu
+			userAlias = 'campb303'
+
+		Example: Email from spam@spammer.net
+			userAlias = None 
+
+		Returns:
+			Union[str, None]: User's Career Account alias if present or None
+		"""
+		emailUser, emailDomain = self.userEmail.split("@")
+		return emailUser if emailDomain.endswith("purdue.edu") else None
+
 	def __repr__(self) -> str:
 		return self.queue + str(self.number)
 
@@ -234,4 +251,3 @@ def __getItems(self) -> list:
 
 	def __len__(self) -> int:
 		return len(self.items)
-