AIyaodianzhushou/backend-java/src/main/java/com/pharmacopoeia/entity/UserEvent.java

package com.pharmacopoeia.entity;

import jakarta.persistence.*;
import lombok.*;
import org.hibernate.annotations.JdbcTypeCode;
import org.hibernate.type.SqlTypes;

import java.time.Instant;
import java.util.Map;

@Entity
@Table(name = "user_events")
@Data
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class UserEvent {

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

    @Column(name = "user_key", length = 128)
    private String userKey;

    @Column(name = "event_type", length = 64)
    private String eventType;

    @Column(name = "event_data", columnDefinition = "jsonb")
    @JdbcTypeCode(SqlTypes.JSON)
    private Map<String, Object> eventData;

    @Column(name = "page_url", length = 512)
    private String pageUrl;

    @Column(length = 512)
    private String referrer;

    @Column(length = 64)
    private String ip;

    @Column(name = "user_agent", length = 512)
    private String userAgent;

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

    @PrePersist
    void onCreate() {
        if (createdAt == null) createdAt = Instant.now();
    }
}