NCBACK-33 add start logic for verify by token

src/main/java/ru/soune/nocopy/entity/user/AuthToken.java

@@ -0,0 +1,48 @@
+package ru.soune.nocopy.entity.user;
+
+import jakarta.persistence.*;
+import lombok.*;
+import org.springframework.data.annotation.CreatedDate;
+import org.springframework.data.jpa.domain.support.AuditingEntityListener;
+
+import java.time.LocalDateTime;
+
+@Entity
+@Table(name = "auth_tokens")
+@Getter
+@Setter
+@NoArgsConstructor
+@AllArgsConstructor
+@ToString
+@EntityListeners(AuditingEntityListener.class)
+public class AuthToken {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long tokenId;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "user_id", nullable = false)
+    @ToString.Exclude
+    private User user;
+
+    @Column(nullable = false, unique = true, length = 64)
+    private String token;
+
+    @Column(name = "expires_at", nullable = false)
+    private LocalDateTime expiresAt = LocalDateTime.now().plusDays(30);
+
+    @CreatedDate
+    @Column(name = "created_at", updatable = false, nullable = false)
+    private LocalDateTime createdAt;
+
+    @Column(name = "last_used_at")
+    private LocalDateTime lastUsedAt;
+
+    @Column(name = "is_active")
+    private Boolean isActive = true;
+
+    public boolean isValid() {
+        return Boolean.TRUE.equals(isActive) && expiresAt.isAfter(LocalDateTime.now());
+    }
+}