StudentEnrollmentNew/StudentEnrollment/StudentEnrollmentDatabaseImplement/Models/Course.cs

using StudentEnrollmentContracts.BindingModels;
using StudentEnrollmentContracts.ViewModels;
using StudentEnrollmentDataModels.Models;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace StudentEnrollmentDatabaseImplement.Models
{
	public class Course : ICourseModel
	{
		public long Id { get; private set; }
		[Required]
		public string CourseName { get; private set; } = string.Empty;
		[Required]
		public long FacultyId { get; private set; }

		[ForeignKey("CourseId")]
		public virtual List<StudentCourse> StudentCourses { get; set; } = new();

		public static Course? Create(CourseBindingModel model)
		{
			if (model == null)
			{
				return null;
			}
			return new Course() 
			{ 
				Id = model.Id, 
				CourseName = model.CourseName, 
				FacultyId = model.FacultyId,
			};
		}
		public void Update(CourseBindingModel model)
		{
			if (model == null)
			{
				return;
			}
			CourseName = model.CourseName;
			FacultyId = model.FacultyId;
		}
		public CourseViewModel GetViewModel => new()
		{
			Id = Id,
			CourseName = CourseName,
			FacultyId = FacultyId,
		};
	}
}