Notification.java
package com.seebie.server.entity;
import jakarta.persistence.*;
import jakarta.validation.constraints.NotNull;
import java.io.Serializable;
import java.time.Instant;
@Entity
@Table(name = "notification")
public class Notification implements Serializable {
    @Id
    @Column(name="user_id")
    private Long id;
    @OneToOne(fetch = FetchType.LAZY)
    @MapsId
    @JoinColumn(name = "user_id")
    private User user;
    @Basic
    @NotNull
    private Instant lastSent;
    protected Notification() {
    }
    public Notification(User user) {
        this.user = user;
        lastSent = Instant.now();
    }
    public Notification withLastSent(Instant lastSent) {
        this.lastSent = lastSent;
        return this;
    }
    public Instant getLastSent() {
        return lastSent;
    }
    public User getUser() {
        return user;
    }
}