ShoppingList.java

package com.oliwier.listmebackend.domain.model;

import jakarta.persistence.*;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.Setter;

import java.time.Instant;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;

@Entity
@Table(name = "lists")
@Getter @Setter @NoArgsConstructor
public class ShoppingList {

    @Id
    private UUID id;

    @Column(nullable = false, length = 255)
    private String name;

    @Column(nullable = false, length = 10)
    private String emoji = "\uD83D\uDED2"; // 🛒

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "created_by_device", nullable = false, updatable = false)
    private Device createdByDevice;

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

    @Column(name = "share_token", unique = true, length = 16)
    private String shareToken;

    @OneToMany(mappedBy = "list", cascade = CascadeType.ALL, orphanRemoval = true)
    @OrderBy("position")
    private List<Item> items = new ArrayList<>();

    @OneToMany(mappedBy = "list", cascade = CascadeType.ALL, orphanRemoval = true)
    private List<ListDevice> listDevices = new ArrayList<>();

    @Column(name = "created_at", nullable = false, updatable = false)
    private Instant createdAt;

    @Column(name = "updated_at", nullable = false)
    private Instant updatedAt;

    @PrePersist
    void prePersist() {
        if (id == null) id = UUID.randomUUID();
        Instant now = Instant.now();
        if (createdAt == null) createdAt = now;
        if (updatedAt == null) updatedAt = now;
    }

    @PreUpdate
    void preUpdate() {
        updatedAt = Instant.now();
    }
}