OpenIsle/backend/src/main/java/com/openisle/model/MessageParticipant.java

package com.openisle.model;

import com.fasterxml.jackson.annotation.JsonBackReference;
import jakarta.persistence.*;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.Setter;

import java.time.LocalDateTime;

@Entity
@Getter
@Setter
@NoArgsConstructor
@Table(name = "message_participants")
public class MessageParticipant {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @ManyToOne(optional = false, fetch = FetchType.LAZY)
    @JoinColumn(name = "conversation_id")
    @JsonBackReference
    private MessageConversation conversation;

    @ManyToOne(optional = false, fetch = FetchType.LAZY)
    @JoinColumn(name = "user_id")
    private User user;

    @Column
    private LocalDateTime lastReadAt;
}