feat: add exam score management

apps/server/src/entities/exam-score.entity.ts

@@ -9,12 +9,20 @@ import {
 } from 'typeorm';
 import { Student } from './student.entity';
 import { StudentEnrollment } from './student-enrollment.entity';
+import { Exam } from './exam.entity';
 
 @Entity('exam_scores')
 export class ExamScore {
   @PrimaryGeneratedColumn()
   id: number;
 
+  @Column({ name: 'exam_id', type: 'integer', nullable: true })
+  examId: number | null;
+
+  @ManyToOne(() => Exam, (exam) => exam.scores, { nullable: true, onDelete: 'CASCADE' })
+  @JoinColumn({ name: 'exam_id' })
+  exam: Exam | null;
+
   @Column({ name: 'student_id', type: 'integer' })
   studentId: number;
 
@@ -39,13 +47,13 @@ export class ExamScore {
   subject: string;
 
   @Column({ type: 'decimal', precision: 5, scale: 2, nullable: true })
-  score: number;
+  score: number | null;
 
   @Column({ name: 'class_avg', type: 'decimal', precision: 5, scale: 2, nullable: true })
-  classAvg: number;
+  classAvg: number | null;
 
   @Column({ type: 'integer', nullable: true })
-  rank: number;
+  rank: number | null;
 
   @Column({ name: 'exam_date', type: 'date', nullable: true })
   examDate: string;

apps/server/src/entities/exam.entity.ts

@@ -0,0 +1,49 @@
+import {
+  Column,
+  CreateDateColumn,
+  Entity,
+  JoinColumn,
+  ManyToOne,
+  OneToMany,
+  PrimaryGeneratedColumn,
+  UpdateDateColumn,
+} from 'typeorm';
+import { Class } from './class.entity';
+import { ExamScore } from './exam-score.entity';
+
+@Entity('exams')
+export class Exam {
+  @PrimaryGeneratedColumn()
+  id: number;
+
+  @Column({ name: 'exam_type', length: 50 })
+  examType: string;
+
+  @Column({ name: 'exam_name', length: 100 })
+  examName: string;
+
+  @Column({ length: 50 })
+  subject: string;
+
+  @Column({ name: 'exam_date', type: 'date' })
+  examDate: string;
+
+  @Column({ name: 'class_id', type: 'integer' })
+  classId: number;
+
+  @ManyToOne(() => Class)
+  @JoinColumn({ name: 'class_id' })
+  class: Class;
+
+  @OneToMany(() => ExamScore, (score) => score.exam)
+  scores: ExamScore[];
+
+  @Column({ type: 'varchar', length: 20, default: 'active' })
+  status: 'active' | 'archived';
+
+  @CreateDateColumn({ name: 'created_at' })
+  createdAt: Date;
+
+  @UpdateDateColumn({ name: 'updated_at' })
+  updatedAt: Date;
+}

apps/server/src/entities/index.ts

@@ -32,6 +32,7 @@ export { Notification, NotificationType } from './notification.entity';
 export { StudentProfile } from './student-profile.entity';
 export { StudentEnrollment } from './student-enrollment.entity';
 export { ExamScore } from './exam-score.entity';
+export { Exam } from './exam.entity';
 export { LearningRecord } from './learning-record.entity';
 export { ResultArchive } from './result-archive.entity';
 export { ArchiveAttachment } from './archive-attachment.entity';