COURSE MANAGER

Context

The head of the Learning management system (LMS) has hired you as a consultant. The LMS team has the goal of upskilling the employees with the latest topics via courses. You need to help build a system to schedule and manage the courses.

DEMO: Loom

Goal

Your job is to build a simple command line application, which does the following:

Add course offering A course offering has course title, instructor and date. It should also contain a minimum & maximum number of employees for the course offering. Register for the course Employees can register for the courses. If no. of employees registered for the course has reached the maximum, the result will be COURSE_FULL_ERROR. Otherwise, result of registration will be ACCEPTED. Cancel registration Employees can cancel their registration until the course allotment is completed. Course allotment This feature allots employees to course offering, before the course offering date. It should print a list of all the employees with their details along with their final course allotment status (Registration Number, Employee Name, Email, Course Offering ID, Course Name, Instructor, Date, Final Status). The list should be sorted based on the Registration number. If sufficient registrations are not received then the course offering itself gets cancelled. The employees who have registered will get confirmed unless the minimum number of registrations is not received. Even if the course offering gets canceled due to the minimum number of employees not registered, the list should be printed.

Commands

Every input command has an output. The format is as given ... :

Add course offering

COMMAND	PARAMETERS	OUTPUT
ADD-COURSE-OFFERING	<course-name> <instructor> <date-in-ddmmyyyy> <minEmployees> <maxEmployees>	<course-offering-id>
REGISTER	<email-id> <course-offering-id>	<course-registration-id> <status>
ALLOT-COURSE	<course-offering-id>	<course-registration-id> <email-id> <course-offering-id> <course-name> <instructor> <date-in-ddmmyyyy> <status>
CANCEL	<course-registration-id>	<course-registration-id> <status>

• The format of course-offering-id is OFFERING--
• The combination of email-id and course-offering-id in the input should be unique
• The format of course-registration-id is REG-COURSE--
• If number of employees has not exceeded the maximum number of employees allowed for the course offering, status will be ACCEPTED
• If number of employees has exceeded the maximum number of employees allowed for the course offering, status will be COURSE_FULL_ERROR
• If the minimum number of employees for the course offering is not reached before the course date, the status of the course offering would be COURSE_CANCELED
• Course-registration-id will only be returned if the status is ACCEPTED
• The output should be sorted by course-registration-id in ascending order

Assumptions

• If there is validation error in the input (data validation or mandatory fields missing) then it should print an error message INPUT_DATA_ERROR.
• Employees can only cancel their registration until the course is allotted.
• Instructor names are unique
• Course names are unique
• None of the input fields accept whitespace (whitespace acts as a delimiter between fields)
• Course offering ID generated is a combination of OFFERING--
• Registration ID generated is a combination of REG-COURSE--
• is extracted from email ID: everything before the @ sign in the email

Sample Inputs:

Sample input commands to try:

• ADD-COURSE-OFFERING PYTHON JOHN 05062022 1 3
• REGISTER WOO@GMAIL.COM OFFERING-PYTHON-JOHN
• REGISTER ANDY@GMAIL.COM OFFERING-PYTHON-JOHN
• REGISTER BOBY@GMAIL.COM OFFERING-PYTHON-JOHN
• CANCEL REG-COURSE-BOBY-PYTHON
• ALLOT OFFERING-PYTHON-JOHN

How to run the code

Run these commands

• mvn clean install -DskipTests assembly:single -q - This will create a jar file geektrust.jar in the target folder.
• java -jar target/geektrust.jar sample_input/input1.txt - This will execute the jar file passing in the sample input file as the command line argument

Running input files can be done, input files are present in sample_input folder

Please fill input1.txt and input2.txt with the input commands and use those files in run.bat or run.sh. Replace java -jar target/geektrust.jar sample_input/input1.txt with java -jar target/geektrust.jar sample_input/input2.txt to run the test case from the second file.

How to execute the unit tests

mvn clean test will execute the unit test cases.

Help

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