Files
TechHelper/Entities/Contracts/Assignment.cs
2025-06-24 11:37:12 +08:00

77 lines
1.8 KiB
C#

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations.Schema;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Entities.DTO;
namespace Entities.Contracts
{
[Table("assignments")]
public class Assignment
{
[Key]
[Column("id")]
public Guid Id { get; set; }
[Required]
[Column("title")]
[StringLength(255)]
public string Title { get; set; }
[Column("description")]
public string Description { get; set; }
[Column("subject_area")]
public SubjectAreaEnum SubjectArea { get; set; }
[Required]
[Column("exam_struct_id")]
public Guid ExamStructId { get; set; }
[Required]
[Column("due_date")]
public DateTime DueDate { get; set; }
[Column("total_points")]
public byte TotalQuestions { get; set; }
[Column("score")]
public float Score { get; set; }
[Column("created_by")]
public Guid CreatorId { get; set; }
[Column("created_at")]
public DateTime CreatedAt { get; set; }
[Column("updated_at")]
public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
[Column("deleted")]
public bool IsDeleted { get; set; } = false;
// Navigation Properties
[ForeignKey(nameof(CreatorId))]
public User Creator { get; set; }
public ICollection<AssignmentClass> AssignmentClasses { get; set; }
[ForeignKey(nameof(ExamStructId))]
public AssignmentQuestion ExamStruct { get; set; }
public ICollection<AssignmentAttachment> AssignmentAttachments { get; set; }
public ICollection<Submission> Submissions { get; set; }
public Assignment()
{
Id = Guid.NewGuid();
Submissions = new HashSet<Submission>();
AssignmentClasses = new HashSet<AssignmentClass>();
AssignmentAttachments = new HashSet<AssignmentAttachment>();
}
}
}