ClassSession.java

package com.wavii.model;

import jakarta.persistence.*;
import lombok.*;

import java.time.LocalDateTime;
import java.util.UUID;

/**
 * Entidad que representa una sesión de clase individual (clase particular).
 * Contiene la fecha, duración, estado y enlace de la reunión.
 */
@Entity
@Table(name = "class_sessions")
@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
public class ClassSession {

    @Id
    @GeneratedValue(strategy = GenerationType.UUID)
    private UUID id;

    @ManyToOne(fetch = FetchType.LAZY, optional = false)
    @JoinColumn(name = "enrollment_id", nullable = false)
    private ClassEnrollment enrollment;

    @ManyToOne(fetch = FetchType.LAZY, optional = false)
    @JoinColumn(name = "teacher_id", nullable = false)
    private User teacher;

    @ManyToOne(fetch = FetchType.LAZY, optional = false)
    @JoinColumn(name = "student_id", nullable = false)
    private User student;

    @Column(nullable = false)
    private LocalDateTime scheduledAt;

    @Column(nullable = false)
    @Builder.Default
    private Integer durationMinutes = 60;

    @Column(length = 30, nullable = false)
    @Builder.Default
    private String status = "scheduled";

    @Column(length = 300)
    private String meetingUrl;

    @Column(length = 500)
    private String notes;

    @Column(nullable = false, updatable = false)
    @Builder.Default
    private LocalDateTime createdAt = LocalDateTime.now();

    @Builder.Default
    private LocalDateTime updatedAt = LocalDateTime.now();

    @PreUpdate
    void onUpdate() {
        updatedAt = LocalDateTime.now();
    }
}