added advertising

src/main/java/com/krylov/refound/entity/advertising/Click.java

@@ -0,0 +1,38 @@
+package com.krylov.refound.entity.advertising;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+import java.time.LocalDateTime;
+
+@Entity
+@Table(name = "click")
+@Getter
+@Setter
+public class Click {
+
+  @Id
+  @GeneratedValue(strategy = GenerationType.IDENTITY)
+  private Long id;
+
+  @ManyToOne(fetch = FetchType.LAZY, optional = false)
+  @JoinColumn(name = "advertising_id", nullable = false)
+  private Advertising advertising;
+
+  @Column(name = "user_id")
+  private Long userId;
+
+  @Column(name = "clicked_at", nullable = false)
+  private LocalDateTime clickedAt;
+
+  @Column(name = "session_id")
+  private String sessionId;
+
+  @PrePersist
+  protected void onCreate() {
+    if (clickedAt == null) {
+      clickedAt = LocalDateTime.now();
+    }
+  }
+}