Student-Course-Management-API

Student Course Management API

Student Course Management API – Enrollment Service

📋 Features in Current Enrollment System

🎯 Enrollment Management

• Enroll a Student
  • Validates that the student exists
  • Validates that the course exists and is active
  • Checks if the course has available seats
  • Prevents duplicate enrollment for the same student and course
  • (Insert into DB pending)
• Cancel an Enrollment
  • Soft-deletes an enrollment by setting IsActive = false

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🔍 Validation & Checks (Internal Logic)

• IsStudentExistsAsync → Confirms the student ID exists in the Students table
• IsCourseExistsAsync → Confirms the course ID exists and is active in the Courses table
• IsAlreadyEnrolledAsync → Ensures the student is not already actively enrolled in the course
• IsEnrollmentVacancyOpenAsync → Combines course existence and capacity checks to determine if enrollment is possible

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📅 Enrollment Date Validation

– ** IsEnrollmentDateValidAsync → Confirms EnrollmentDate is between Course EnrollmentStartTime and EndTime

📊 Course Capacity Logic

• GetCapacityOfCourseAsync → Retrieves the maximum allowed number of students for a course
• GetNumberOfStudentsInCourseAsync → Counts active enrollments in a course
• Vacancy Check → Returns true only if the course exists and has available seats