add token life by hour

src/main/java/ru/soune/nocopy/configuration/HandlerConfig.java

@@ -16,7 +16,8 @@ public class HandlerConfig {
             LoginRequestHandler login,
             FileUploadHandler upload,
             FileEntityHandler file,
-            LogoutRequestHandler logoutHandler
+            LogoutRequestHandler logoutHandler,
+            AuthRequestHandler authRequestHandler
     ) {
         Map<Integer, RequestHandler> map = new HashMap<>();
         map.put(20001, login);
@@ -24,6 +25,7 @@ public class HandlerConfig {
         map.put(20004, upload);
         map.put(20005, file);
         map.put(20006, logoutHandler);
+        map.put(20008, authRequestHandler);
 
         return map;
     }

src/main/java/ru/soune/nocopy/controller/ApiController.java

@@ -19,12 +19,11 @@ import ru.soune.nocopy.dto.file.ChunkUploadResponse;
 import ru.soune.nocopy.dto.file.CompleteUploadResponse;
 import ru.soune.nocopy.dto.file.FileEntityResponse;
 import ru.soune.nocopy.dto.file.UploadProgress;
-import ru.soune.nocopy.entity.auth.AuthToken;
 import ru.soune.nocopy.entity.file.FileStatus;
 import ru.soune.nocopy.entity.file.UploadStatus;
 import ru.soune.nocopy.exception.*;
 import ru.soune.nocopy.handler.*;
-import ru.soune.nocopy.repository.AuthTokenRepository;
+import ru.soune.nocopy.service.auth.AuthService;
 import ru.soune.nocopy.service.file.FileEntityService;
 import ru.soune.nocopy.service.file.FileUploadService;
 
@@ -48,7 +47,7 @@ public class ApiController {
 
     private final FileEntityService fileEntityService;
 
-    private final AuthTokenRepository authTokenRepository;
+    private final AuthService authService;
 
     @PostMapping("/v{version}/data")
     public ResponseEntity<?> handlePostRequest(@RequestBody BaseRequest request,
@@ -71,6 +70,9 @@ public class ApiController {
             return ResponseEntity.ok().body(response);
         } catch (ValidationException e) {
             return createValidationErrorResponse(e.getBindingResult(), e.getMsgId());
+        } catch (NotFoundAuthToken e) {
+            return ResponseEntity.ok().body(new BaseResponse(msgId, MessageCode.AUTH_TOKEN_NOT_FOUND.getCode(),
+                    MessageCode.AUTH_TOKEN_NOT_FOUND.getDescription(), new HashMap<>()));
         } catch (NotValidFieldException e) {
             throw e;
         } catch (Exception e) {
@@ -257,7 +259,7 @@ public class ApiController {
                         errorData));
             }
 
-            Long userId = getUserIdFromToken(tokenHeader);
+            Long userId = authService.useUserAuthToken(tokenHeader);
             FileEntityResponse entityResponse = fileEntityService.getById(fileId, version);
 
             if (!entityResponse.getUserId().equals(userId)) {
@@ -379,11 +381,4 @@ public class ApiController {
                 mimeType.startsWith("video") ||
                 mimeType.startsWith("audio");
     }
-
-    private Long getUserIdFromToken(String tokenHeader) {
-        String token = tokenHeader.replace("Bearer ", "");
-        AuthToken authToken = authTokenRepository.findByToken(token)
-                .orElseThrow(() -> new NotFoundAuthToken("Token not found"));
-        return authToken.getUser().getId();
-    }
 }

src/main/java/ru/soune/nocopy/controller/UserController.java

@@ -6,7 +6,7 @@ import org.springframework.web.bind.annotation.*;
 import ru.soune.nocopy.dto.ChangePasswordRequest;
 import ru.soune.nocopy.dto.UserDTO;
 import ru.soune.nocopy.dto.UserRequest;
-import ru.soune.nocopy.entity.auth.AuthToken;
+import ru.soune.nocopy.entity.AuthToken;
 import ru.soune.nocopy.entity.User;
 import ru.soune.nocopy.exception.InvalidUserEmail;
 import ru.soune.nocopy.exception.NotFoundAuthToken;

src/main/java/ru/soune/nocopy/controller/VkAuthController.java

@@ -1,93 +0,0 @@
-package ru.soune.nocopy.controller;
-
-import com.fasterxml.jackson.databind.ObjectMapper;
-import lombok.RequiredArgsConstructor;
-import lombok.extern.slf4j.Slf4j;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.*;
-import ru.soune.nocopy.dto.BaseResponse;
-import ru.soune.nocopy.dto.LoginAnswer;
-import ru.soune.nocopy.dto.MessageCode;
-import ru.soune.nocopy.entity.User;
-import ru.soune.nocopy.entity.auth.AuthToken;
-import ru.soune.nocopy.service.AuthService;
-import ru.soune.nocopy.service.VkOAuthService;
-import ru.soune.nocopy.service.auth.ExternalAuthUserService;
-
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-@RestController
-@RequestMapping("/api")
-@RequiredArgsConstructor
-@Slf4j
-public class VkAuthController {
-
-    private final VkOAuthService vkOAuthService;
-
-    private final AuthService authService;
-
-    private final ExternalAuthUserService externalAuthUserService;
-
-    @GetMapping("/v{version}/vk/authorization/{code}/{state}/{codeVerifier}/{deviceId}")
-    public BaseResponse vkAuth(@PathVariable("code") String code,
-                                              @PathVariable("state") String state,
-                                              @PathVariable("codeVerifier") String codeVerifier,
-                                              @PathVariable("deviceId") String deviceId) {
-        try {
-            Map<String, Object> authMap = vkOAuthService.authTokenMap(code, state, codeVerifier, deviceId);
-            ObjectMapper mapper = new ObjectMapper();
-
-            String bodyJson = (String) authMap.get("body");
-            Map<String, Object> body = mapper.readValue(bodyJson, Map.class);
-
-            String accessToken = (String) body.get("access_token");
-            long vkUserId = ((Number) body.get("user_id")).longValue();
-            Integer expiresIn = (Integer) body.get("expires_in");
-            String refreshToken = (String) body.get("refresh_token");
-
-            Map<String, Object> vkUserInfo = vkOAuthService.userVkInfo(accessToken);
-            log.info("vkUserInfo {}", vkUserInfo);
-
-            String userInfoBodyJson = (String) vkUserInfo.get("body");
-            Map<String, Object> userInfoBody = mapper.readValue(userInfoBodyJson, Map.class);
-            Map<String, Object> user = (Map<String, Object>) userInfoBody.get("user");
-
-            String firstName = (String) user.get("first_name");
-            String lastName = (String) user.get("last_name");
-            String fullName = firstName + " " + lastName;
-
-            User userEntity = externalAuthUserService.findOrCreateUserFromVK(Long.toString(vkUserId), fullName,
-                    null, accessToken, refreshToken, expiresIn);
-
-            AuthToken ourToken = authService.createTokenForUser(userEntity);
-
-            LoginAnswer loginAnswer = new LoginAnswer();
-            loginAnswer.setToken(ourToken.getToken());
-            loginAnswer.setFieldErrors(new ArrayList<>());
-
-            return new BaseResponse(20009, MessageCode.SUCCESS.getCode(),
-                    MessageCode.SUCCESS.getDescription(), loginAnswer);
-        } catch (Exception e) {
-            log.error("VK auth error: ", e);
-
-            LoginAnswer loginAnswer = new LoginAnswer();
-            loginAnswer.setToken(null);
-
-            List<Map<String, String>> errors = new ArrayList<>();
-            Map<String, String> error = new HashMap<>();
-            error.put("field", "vk_auth");
-            error.put("message", e.getMessage());
-            errors.add(error);
-
-            loginAnswer.setFieldErrors(errors);
-
-            return new BaseResponse(20009, MessageCode.SUCCESS.getCode(),
-                    MessageCode.SUCCESS.getDescription(), loginAnswer);
-        }
-    }
-}
-

src/main/java/ru/soune/nocopy/dto/AuthResponse.java

@@ -0,0 +1,10 @@
+package ru.soune.nocopy.dto;
+
+import java.time.LocalDateTime;
+
+public record AuthResponse (
+        boolean success,
+        String message,
+        String token,
+        LocalDateTime expiresAt
+) {}

src/main/java/ru/soune/nocopy/dto/MessageCode.java

@@ -18,6 +18,7 @@ public enum MessageCode {
     AUTH_EMAIL_NOT_FOUND(4, "Email not found"),
     AUTH_EMAIL_OR_TOKEN_NOT_FOUND(4, "Email or Token not found "),
     AUTH_TOKEN_MISMATCH(4, "Token mismatch"),
+    AUTH_TOKEN_NOT_FOUND(4, "Token not found"),
     FILE_NOT_FOUND(4, "File not found"),
     AUTH_PASSWORD_NOT_MATCHES(2, "Password does not match");
 

src/main/java/ru/soune/nocopy/dto/TokenProcessRequest.java

@@ -0,0 +1,11 @@
+package ru.soune.nocopy.dto;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.Data;
+
+@Data
+public class TokenProcessRequest {
+
+    @JsonProperty("token")
+    private String token;
+}

src/main/java/ru/soune/nocopy/dto/file/FileInfoUserResponse.java

@@ -1,61 +0,0 @@
-package ru.soune.nocopy.dto.file;
-
-import com.fasterxml.jackson.annotation.JsonProperty;
-import lombok.AllArgsConstructor;
-import lombok.Builder;
-import lombok.Data;
-import lombok.NoArgsConstructor;
-
-@Data
-@Builder
-@NoArgsConstructor
-@AllArgsConstructor
-public class FileInfoUserResponse {
-    @JsonProperty("all_files_size")
-    private Long allFileSize;
-
-    @JsonProperty("all_files_quantity")
-    private Integer fileCount;
-
-    @JsonProperty("all_files_check")
-    private Integer filesCheck;
-
-    @JsonProperty("all_files_violation")
-    private Integer filesViolation;
-
-    @JsonProperty("images_size")
-    private Long imagesSize;
-
-    @JsonProperty("images_quantity")
-    private Integer imagesCount;
-
-    @JsonProperty("images_check")
-    private Integer imagesCheck;
-
-    @JsonProperty("images_violations")
-    private Integer imagesViolations;
-
-    @JsonProperty("videos_size")
-    private Long videosSize;
-
-    @JsonProperty("videos_quantity")
-    private Integer videosCount;
-
-    @JsonProperty("videos_check")
-    private Integer videosCheck;
-
-    @JsonProperty("videos_violations")
-    private Integer videosViolations;
-
-    @JsonProperty("audios_size")
-    private Long audiosSize;
-
-    @JsonProperty("audios_quantity")
-    private Integer audiosCount;
-
-    @JsonProperty("audios_check")
-    private Integer audiosCheck;
-
-    @JsonProperty("audios_violations")
-    private Integer audiosViolations;
-}

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

@@ -1,10 +1,9 @@
-package ru.soune.nocopy.entity.auth;
+package ru.soune.nocopy.entity;
 
 import jakarta.persistence.*;
 import lombok.*;
 import org.springframework.data.annotation.CreatedDate;
 import org.springframework.data.jpa.domain.support.AuditingEntityListener;
-import ru.soune.nocopy.entity.User;
 
 import java.time.LocalDateTime;
 
@@ -42,8 +41,4 @@ public class AuthToken {
 
     @Column(name = "is_active")
     private Boolean isActive = true;
-
-    public boolean isValid() {
-        return Boolean.TRUE.equals(isActive) && expiresAt.isAfter(LocalDateTime.now());
-    }
 }

src/main/java/ru/soune/nocopy/entity/User.java

@@ -6,14 +6,11 @@ import jakarta.validation.constraints.Size;
 import lombok.*;
 import org.springframework.data.annotation.CreatedDate;
 import org.springframework.data.jpa.domain.support.AuditingEntityListener;
-import ru.soune.nocopy.entity.auth.AuthToken;
-import ru.soune.nocopy.entity.auth.ExternalAuthProvider;
 
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Optional;
 
 @Entity
 @Table(name = "users")
@@ -22,19 +19,18 @@ import java.util.Optional;
 @NoArgsConstructor
 @AllArgsConstructor
 @ToString
-@Builder
 @EntityListeners(AuditingEntityListener.class)
 public class User {
 
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private Long id;
+    private Long Id;
 
     @Column(name = "full_name", nullable = false)
     private String fullName;
 
-    @Size(max = 255)
+    @Size(max = 1024)
-    @Column(name = "email", nullable = false, length = 255, unique = true)
+    @Column(name = "email", nullable = false, length = 1024, unique = true)
     private String email;
 
     @Column(name = "company")
@@ -94,14 +90,4 @@ public class User {
     @JsonIgnore
     @ToString.Exclude
     private List<ImageProtection> imageProtections = new ArrayList<>();
-
-    @OneToMany(mappedBy = "user", cascade = CascadeType.ALL, fetch = FetchType.LAZY)
-    @ToString.Exclude
-    private List<ExternalAuthProvider> externalAuthProviders = new ArrayList<>();
-
-    public Optional<ExternalAuthProvider> getProvider(ExternalAuthProvider.ProviderType providerType) {
-        return externalAuthProviders.stream()
-                .filter(p -> p.getProviderType() == providerType)
-                .findFirst();
-    }
 }

src/main/java/ru/soune/nocopy/entity/auth/ExternalAuthProvider.java

@@ -1,89 +0,0 @@
-package ru.soune.nocopy.entity.auth;
-
-import jakarta.persistence.*;
-import lombok.*;
-import org.springframework.data.annotation.CreatedDate;
-import org.springframework.data.jpa.domain.support.AuditingEntityListener;
-import ru.soune.nocopy.entity.User;
-
-import java.time.LocalDateTime;
-
-@Entity
-@Table(name = "external_auth_providers",
-        uniqueConstraints = @UniqueConstraint(
-                columnNames = {"provider_type", "provider_user_id"}
-        ),
-        indexes = {
-                @Index(name = "idx_provider_type_user_id",
-                        columnList = "provider_type, provider_user_id"),
-                @Index(name = "idx_user_id_provider_type",
-                        columnList = "user_id, provider_type")
-        })
-@Getter @Setter
-@NoArgsConstructor
-@AllArgsConstructor
-@Builder
-@EntityListeners(AuditingEntityListener.class)
-public class ExternalAuthProvider {
-
-    public enum ProviderType {
-        VK, YANDEX
-    }
-
-    @Id
-    @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private Long id;
-
-    @ManyToOne(fetch = FetchType.LAZY)
-    @JoinColumn(name = "user_id", nullable = false, foreignKey = @ForeignKey(name = "fk_extauth_user"))
-    @ToString.Exclude
-    private User user;
-
-    @Enumerated(EnumType.STRING)
-    @Column(name = "provider_type", nullable = false, length = 20)
-    private ProviderType providerType;
-
-    @Column(name = "provider_user_id", nullable = false, length = 255)
-    private String providerUserId;
-
-    @Column(name = "access_token", length = 2048)
-    private String accessToken;
-
-    @Column(name = "refresh_token", length = 2048)
-    private String refreshToken;
-
-    @Column(name = "token_expires_at")
-    private LocalDateTime tokenExpiresAt;
-
-    @Column(name = "email", length = 255)
-    private String email;
-
-    @Column(name = "phone", length = 20)
-    private String phoneNumber;
-
-    @CreatedDate
-    @Column(name = "linked_at", updatable = false)
-    private LocalDateTime linkedAt;
-
-    @Column(name = "last_used_at")
-    private LocalDateTime lastUsedAt;
-
-    @Column(name = "is_active")
-    @Builder.Default
-    private Boolean isActive = true;
-
-    @PrePersist
-    public void prePersist() {
-        if (this.linkedAt == null) {
-            this.linkedAt = LocalDateTime.now();
-        }
-        if (this.lastUsedAt == null) {
-            this.lastUsedAt = LocalDateTime.now();
-        }
-    }
-
-    @PreUpdate
-    public void preUpdate() {
-        this.lastUsedAt = LocalDateTime.now();
-    }
-}

src/main/java/ru/soune/nocopy/entity/file/FileStatus.java

@@ -4,7 +4,5 @@ public enum FileStatus {
     ACTIVE,
     DELETED,
     PROCESSING,
-    VIOLATION,
-    CHECKED,
     ERROR
 }

src/main/java/ru/soune/nocopy/handler/AuthRequestHandler.java

@@ -0,0 +1,37 @@
+package ru.soune.nocopy.handler;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+import ru.soune.nocopy.dto.BaseRequest;
+import ru.soune.nocopy.dto.BaseResponse;
+import ru.soune.nocopy.dto.MessageCode;
+import ru.soune.nocopy.dto.TokenProcessRequest;
+import ru.soune.nocopy.exception.NotFoundAuthToken;
+import ru.soune.nocopy.service.auth.AuthService;
+
+import java.util.Map;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class AuthRequestHandler implements RequestHandler {
+
+    private final ObjectMapper objectMapper;
+
+    private final AuthService authService;
+
+    @Override
+    public BaseResponse handle(BaseRequest request) throws NotFoundAuthToken {
+        TokenProcessRequest tokenProcessRequest = objectMapper.convertValue(request.getMessageBody(),
+                TokenProcessRequest.class);
+
+        authService.useUserAuthToken(tokenProcessRequest.getToken());
+
+        return new BaseResponse(request.getMsgId(),
+                MessageCode.SUCCESS.getCode(),
+                "Token processed successfully",
+                Map.of("token", tokenProcessRequest.getToken()));
+    }
+}

src/main/java/ru/soune/nocopy/handler/FileEntityHandler.java

@@ -6,15 +6,14 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 import ru.soune.nocopy.dto.*;
 import ru.soune.nocopy.dto.file.*;
-import ru.soune.nocopy.entity.auth.AuthToken;
 import ru.soune.nocopy.entity.file.FileEntity;
 import ru.soune.nocopy.entity.file.FileStatus;
 import ru.soune.nocopy.exception.FileEntityNotFoundException;
 import ru.soune.nocopy.exception.NotFoundAuthToken;
 import ru.soune.nocopy.repository.AuthTokenRepository;
 import ru.soune.nocopy.repository.FileEntityRepository;
+import ru.soune.nocopy.service.auth.AuthService;
 import ru.soune.nocopy.service.file.FileEntityService;
-import ru.soune.nocopy.service.file.FileStatsService;
 
 import java.util.Arrays;
 import java.util.List;
@@ -23,10 +22,9 @@ import java.util.List;
 @Component
 @RequiredArgsConstructor
 public class FileEntityHandler implements RequestHandler {
-
     private final FileEntityService fileEntityService;
 
-    private final FileStatsService fileStatsService;
+    private final AuthService authService;
 
     private final AuthTokenRepository authTokenRepository;
 
@@ -45,8 +43,6 @@ public class FileEntityHandler implements RequestHandler {
             switch (action) {
                 case "file_info":
                     return handleGetFileInfo(request, fileRequest);
-                case "user_files_info":
-                    return handleGetFilesUserInfo(request, fileRequest);
                 case "file_by_session":
                     return handleGetFileBySession(request, fileRequest);
                 case "user_files":
@@ -79,19 +75,9 @@ public class FileEntityHandler implements RequestHandler {
         }
     }
 
-    private BaseResponse handleGetFilesUserInfo(BaseRequest request, FileEntityRequest fileRequest) {
-        Long userId = getUserIdFromToken(fileRequest.getToken());
-        FileInfoUserResponse userFileStats = fileStatsService.getUserFileStats(userId);
-
-        return new BaseResponse(request.getMsgId(),
-                MessageCode.SUCCESS.getCode(),
-                MessageCode.SUCCESS.getDescription(),
-                userFileStats);
-    }
-
     private BaseResponse handleGetFileInfo(BaseRequest request, FileEntityRequest fileRequest) {
         try {
-            Long userId = getUserIdFromToken(fileRequest.getToken());
+            Long userId =  authService.useUserAuthToken(fileRequest.getToken());
             FileEntityResponse fileInfo = fileEntityService.getById(fileRequest.getFileId(), request.getVersion());
 
             if (!fileInfo.getUserId().equals(userId)) {
@@ -122,7 +108,7 @@ public class FileEntityHandler implements RequestHandler {
 
     private BaseResponse handleGetFileBySession(BaseRequest request, FileEntityRequest fileRequest) {
         try {
-            Long userId = getUserIdFromToken(fileRequest.getToken());
+            Long userId = authService.useUserAuthToken(fileRequest.getToken());
             FileEntityResponse fileInfo = fileEntityService.getByUploadSessionId(fileRequest.getUploadSessionId(),
                     request.getVersion());
 
@@ -154,7 +140,7 @@ public class FileEntityHandler implements RequestHandler {
 
     private BaseResponse handleGetUserFiles(BaseRequest request, FileEntityRequest fileRequest) {
         try {
-            Long userId = getUserIdFromToken(fileRequest.getToken());
+            Long userId = authService.useUserAuthToken(fileRequest.getToken());
             int page = fileRequest.getPage() != null ? fileRequest.getPage() : 1;
             int pageSize = fileRequest.getPageSize() != null ? fileRequest.getPageSize() : 20;
 
@@ -181,7 +167,7 @@ public class FileEntityHandler implements RequestHandler {
 
     private BaseResponse handleSearchFiles(BaseRequest request, FileEntityRequest fileRequest) {
         try {
-            Long userId = getUserIdFromToken(fileRequest.getToken());
+            Long userId = authService.useUserAuthToken(fileRequest.getToken());
             int page = fileRequest.getPage() != null ? fileRequest.getPage() : 1;
             int pageSize = fileRequest.getPageSize() != null ? fileRequest.getPageSize() : 20;
 
@@ -228,7 +214,7 @@ public class FileEntityHandler implements RequestHandler {
 
     private BaseResponse handleGetStorageUsage(BaseRequest request, FileEntityRequest fileRequest) {
         try {
-            Long userId = getUserIdFromToken(fileRequest.getToken());
+            Long userId = authService.useUserAuthToken(fileRequest.getToken());
             long usage = fileEntityService.getUserStorageUsed(userId);
 
             StorageUsageResponse response = StorageUsageResponse.builder()
@@ -258,7 +244,7 @@ public class FileEntityHandler implements RequestHandler {
 
     private BaseResponse handleDeleteFile(BaseRequest request, FileEntityRequest fileRequest) {
         try {
-            Long userId = getUserIdFromToken(fileRequest.getToken());
+            Long userId = authService.useUserAuthToken(fileRequest.getToken());
             String fileId = fileRequest.getFileId();
             FileEntityResponse fileInfo = fileEntityService.getById(fileId, request.getVersion());
             DeleteFileResponse response;
@@ -305,20 +291,6 @@ public class FileEntityHandler implements RequestHandler {
         }
     }
 
-    private Long getUserIdFromToken(String token) {
-        if (token == null || token.isBlank()) {
-            throw new NotFoundAuthToken("Token is required");
-        }
-
-        if (token.startsWith("Bearer ")) {
-            token = token.replace("Bearer ", "");
-        }
-
-        AuthToken authToken = authTokenRepository.findByToken(token)
-                .orElseThrow(() -> new NotFoundAuthToken("Token not found"));
-        return authToken.getUser().getId();
-    }
-
     private String formatFileSize(long size) {
         if (size < 1024) return size + " B";
         int exp = (int) (Math.log(size) / Math.log(1024));

src/main/java/ru/soune/nocopy/handler/FileUploadHandler.java

@@ -10,13 +10,14 @@ import org.springframework.validation.BindingResult;
 import org.springframework.validation.FieldError;
 import ru.soune.nocopy.dto.*;
 import ru.soune.nocopy.dto.file.*;
-import ru.soune.nocopy.entity.auth.AuthToken;
+import ru.soune.nocopy.entity.AuthToken;
 import ru.soune.nocopy.entity.file.FileType;
 import ru.soune.nocopy.entity.file.FileUploadSession;
 import ru.soune.nocopy.exception.*;
 import ru.soune.nocopy.handler.validator.FileUploadRequestValidator;
 import ru.soune.nocopy.repository.AuthTokenRepository;
 import ru.soune.nocopy.repository.FileUploadSessionRepository;
+import ru.soune.nocopy.service.auth.AuthService;
 import ru.soune.nocopy.service.file.FileUploadService;
 
 import java.util.*;
@@ -28,6 +29,8 @@ import java.util.stream.Collectors;
 public class FileUploadHandler implements RequestHandler {
     private final FileUploadService fileUploadService;
 
+    private final AuthService authService;
+
     private final AuthTokenRepository authTokenRepository;
 
     private final FileUploadSessionRepository fileUploadSessionRepository;
@@ -86,8 +89,7 @@ public class FileUploadHandler implements RequestHandler {
                         MessageCode.INVALID_TOKEN.getDescription(), Map.of("token", token));
             }
 
-            AuthToken authToken = tokenOptional.orElseThrow(() -> new NotFoundAuthToken("Token not found"));
+            Long userId = authService.useUserAuthToken(token);
-
             BindingResult bindingResult = new BeanPropertyBindingResult(fileRequest, "fileRequest");
                     fileUploadRequestValidator.validate(fileRequest, bindingResult);
 
@@ -105,7 +107,7 @@ public class FileUploadHandler implements RequestHandler {
             }
 
             FileUploadSession session = fileUploadService.initUpload(
-                    authToken.getUser().getId(),
+                    userId,
                     fileRequest.getFileName(),
                     fileRequest.getFileType(),
                     fileRequest.getExtension(),

src/main/java/ru/soune/nocopy/handler/LoginRequestHandler.java

@@ -4,10 +4,10 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Component;
 import ru.soune.nocopy.dto.*;
-import ru.soune.nocopy.entity.auth.AuthToken;
+import ru.soune.nocopy.entity.AuthToken;
 import ru.soune.nocopy.exception.NotValidFieldException;
 import ru.soune.nocopy.repository.UserRepository;
-import ru.soune.nocopy.service.AuthService;
+import ru.soune.nocopy.service.auth.AuthService;
 
 import java.util.Arrays;
 import java.util.Map;
@@ -17,7 +17,9 @@ import java.util.Map;
 public class LoginRequestHandler implements RequestHandler {
 
     private final UserRepository userRepository;
+
     private final AuthService authService;
+
     private final ObjectMapper objectMapper;
 
     @Override
@@ -34,9 +36,12 @@ public class LoginRequestHandler implements RequestHandler {
         }
 
         AuthToken authToken = authService.login(loginRequest);
+        String token = authToken.getToken();
 
         LoginAnswer loginAnswer = new LoginAnswer();
-        loginAnswer.setToken(authToken.getToken());
+        loginAnswer.setToken(token);
+
+        authService.useUserAuthToken(token);
 
         return new BaseResponse(request.getMsgId(), MessageCode.SUCCESS.getCode(),
                 MessageCode.SUCCESS.getDescription(), loginAnswer);

src/main/java/ru/soune/nocopy/handler/LogoutRequestHandler.java

@@ -4,12 +4,12 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Component;
 import ru.soune.nocopy.dto.*;
-import ru.soune.nocopy.entity.auth.AuthToken;
+import ru.soune.nocopy.entity.AuthToken;
 import ru.soune.nocopy.entity.User;
 import ru.soune.nocopy.exception.NotValidFieldException;
 import ru.soune.nocopy.repository.AuthTokenRepository;
 import ru.soune.nocopy.repository.UserRepository;
-import ru.soune.nocopy.service.AuthService;
+import ru.soune.nocopy.service.auth.AuthService;
 
 import java.util.Objects;
 import java.util.Optional;

src/main/java/ru/soune/nocopy/handler/RegRequestHandler.java

@@ -7,12 +7,12 @@ import org.springframework.stereotype.Component;
 import org.springframework.validation.BeanPropertyBindingResult;
 import org.springframework.validation.BindingResult;
 import ru.soune.nocopy.dto.*;
-import ru.soune.nocopy.entity.auth.AuthToken;
+import ru.soune.nocopy.entity.AuthToken;
 import ru.soune.nocopy.exception.NotValidFieldException;
 import ru.soune.nocopy.exception.ValidationException;
 import ru.soune.nocopy.handler.validator.RegRequestValidator;
 import ru.soune.nocopy.repository.UserRepository;
-import ru.soune.nocopy.service.AuthService;
+import ru.soune.nocopy.service.auth.AuthService;
 
 import java.util.Arrays;
 import java.util.Map;
@@ -52,9 +52,11 @@ public class RegRequestHandler implements RequestHandler {
         }
 
         AuthToken authToken = authService.register(regRequest);
+        String token = authToken.getToken();
+        authService.useUserAuthToken(token);
 
         RegAnswer regAnswer = new RegAnswer();
-        regAnswer.setToken(authToken.getToken());
+        regAnswer.setToken(token);
 
         return new BaseResponse(request.getMsgId(), MessageCode.SUCCESS.getCode(),
                 MessageCode.SUCCESS.getDescription(), regAnswer);

src/main/java/ru/soune/nocopy/repository/AuthTokenRepository.java

@@ -2,13 +2,14 @@ package ru.soune.nocopy.repository;
 
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
-import ru.soune.nocopy.entity.auth.AuthToken;
+import ru.soune.nocopy.entity.AuthToken;
 
-import java.time.LocalDate;
+import java.time.LocalDateTime;
 import java.util.Optional;
 
 @Repository
 public interface AuthTokenRepository extends JpaRepository<AuthToken, Long> {
-    Optional<AuthToken> findByTokenAndExpiresAtAfter(String token, LocalDate expiresAtAfter);
+    Optional<AuthToken> findByLastUsedAtAndExpiresAtBefore(LocalDateTime lastUsedAt, LocalDateTime expiresAtBefore);
+    Optional<AuthToken> findByLastUsedAtBefore(LocalDateTime lastUsedAt);
     Optional<AuthToken> findByToken(String token);
 }

src/main/java/ru/soune/nocopy/repository/ExternalAuthProviderRepository.java

@@ -1,25 +0,0 @@
-package ru.soune.nocopy.repository;
-
-import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.stereotype.Repository;
-import ru.soune.nocopy.entity.User;
-import ru.soune.nocopy.entity.auth.ExternalAuthProvider;
-
-import java.util.List;
-import java.util.Optional;
-
-@Repository
-public interface ExternalAuthProviderRepository extends JpaRepository<ExternalAuthProvider, Long> {
-
-    Optional<ExternalAuthProvider> findByProviderTypeAndProviderUserId(
-            ExternalAuthProvider.ProviderType providerType,
-            String providerUserId
-    );
-
-    List<ExternalAuthProvider> findByUser(User user);
-
-    boolean existsByProviderTypeAndProviderUserId(
-            ExternalAuthProvider.ProviderType providerType,
-            String providerUserId
-    );
-}

src/main/java/ru/soune/nocopy/repository/UserRepository.java

@@ -2,10 +2,7 @@ package ru.soune.nocopy.repository;
 
 import jakarta.validation.constraints.Size;
 import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.data.jpa.repository.Query;
-import org.springframework.data.repository.query.Param;
 import ru.soune.nocopy.entity.User;
-import ru.soune.nocopy.entity.auth.ExternalAuthProvider;
 
 import java.util.Optional;
 
@@ -13,10 +10,4 @@ public interface UserRepository extends JpaRepository<User, Long> {
     Optional<User> findByEmail(String email);
     boolean existsByEmail(String email);
     boolean existsByPhone(@Size(min = 11, max = 14) String phone);
-    @Query("SELECT u FROM User u JOIN u.externalAuthProviders p " +
-            "WHERE p.providerType = :providerType AND p.providerUserId = :providerUserId")
-    Optional<User> findByExternalProvider(
-            @Param("providerType") ExternalAuthProvider.ProviderType providerType,
-            @Param("providerUserId") String providerUserId
-    );
 }

src/main/java/ru/soune/nocopy/service/VkOAuthService.java

@@ -1,69 +0,0 @@
-package ru.soune.nocopy.service;
-
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.http.*;
-import org.springframework.stereotype.Service;
-import org.springframework.util.LinkedMultiValueMap;
-import org.springframework.util.MultiValueMap;
-import org.springframework.web.client.RestTemplate;
-
-import java.util.HashMap;
-import java.util.Map;
-
-@Service
-public class VkOAuthService {
-    @Value("${auth.vk.oauth2}")
-    String oauthVkPath;
-
-    @Value("${auth.vk.user_info}")
-    String vkUserInfo;
-
-    @Value("${auth.vk.client_id}")
-    String clientId;
-
-    @Value("${auth.vk.redirect_uri}")
-    String redirectUri;
-
-    public Map<String, Object> authTokenMap(String code, String state, String codeVerifier, String deviceId) {
-        MultiValueMap<String, String> params = new LinkedMultiValueMap<>();
-        params.add("grant_type", "authorization_code");
-        params.add("code_verifier", codeVerifier);
-        params.add("redirect_uri", redirectUri);
-        params.add("code", code);
-        params.add("client_id", clientId);
-        params.add("device_id", deviceId);
-        params.add("state", state);
-        params.add("scope", "email,phone");
-
-        HttpHeaders headers = new HttpHeaders();
-        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
-
-        return sendRequest(params, headers,oauthVkPath);
-    }
-
-    public Map<String, Object> userVkInfo(String accessToken) {
-        MultiValueMap<String, String> params = new LinkedMultiValueMap<>();
-        params.add("access_token", accessToken);
-        params.add("client_id", clientId);
-
-        HttpHeaders headers = new HttpHeaders();
-        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
-
-
-        return sendRequest(params, headers, vkUserInfo);
-    }
-
-    private Map<String, Object> sendRequest(MultiValueMap<String, String> params, HttpHeaders headers, String url) {
-        Map<String, Object> info = new HashMap<>();
-        RestTemplate restTemplate = new RestTemplate();
-        ResponseEntity<String> response = restTemplate.exchange(url, HttpMethod.POST,
-                new HttpEntity<>(params, headers), String.class);
-
-        info.put("status", response.getStatusCodeValue());
-        info.put("body", response.getBody());
-        info.put("headers", response.getHeaders());
-        info.put("success", response.getStatusCode().is2xxSuccessful());
-
-        return info;
-    }
-}

src/main/java/ru/soune/nocopy/service/auth/AuthService.java

@@ -1,13 +1,13 @@
-package ru.soune.nocopy.service;
+package ru.soune.nocopy.service.auth;
 
 import lombok.RequiredArgsConstructor;
-import org.springframework.context.MessageSource;
 import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import ru.soune.nocopy.dto.*;
-import ru.soune.nocopy.entity.auth.AuthToken;
+import ru.soune.nocopy.entity.AuthToken;
 import ru.soune.nocopy.entity.User;
+import ru.soune.nocopy.exception.NotFoundAuthToken;
 import ru.soune.nocopy.exception.NotValidFieldException;
 import ru.soune.nocopy.repository.AuthTokenRepository;
 import ru.soune.nocopy.repository.UserRepository;
@@ -29,8 +29,6 @@ public class AuthService {
 
     private final PasswordEncoder passwordEncoder;
 
-    private final MessageSource messageSource;
-
     private final SecureRandom secureRandom = new SecureRandom();
 
     @Transactional
@@ -82,23 +80,28 @@ public class AuthService {
     }
 
     @Transactional
-    public void logout(String token) {
+    public Long useUserAuthToken(String token) {
-        authTokenRepository.findByToken(token)
+        if (token == null || token.isBlank()) {
-                .ifPresent(authTokenRepository::delete);
+            throw new NotFoundAuthToken("Token is required");
+        }
+
+        if (token.startsWith("Bearer ")) {
+            token = token.replace("Bearer ", "");
+        }
+
+        AuthToken authToken = authTokenRepository.findByToken(token)
+                .orElseThrow(() -> new NotFoundAuthToken("Token not found"));
+        authToken.setLastUsedAt(LocalDateTime.now());
+
+        authTokenRepository.save(authToken);
+
+        return authToken.getUser().getId();
     }
 
     @Transactional
-    public AuthToken createTokenForUser(User user) {
+    public void logout(String token) {
-        AuthToken authToken = new AuthToken();
+        authTokenRepository.findByToken(token)
-        authToken.setToken(generateAuthToken());
+                .ifPresent(authTokenRepository::delete);
-        authToken.setUser(user);
-        authToken.setExpiresAt(LocalDateTime.now().plusHours(1));
-        authToken.setIsActive(true);
-
-        user.setLastLoginAt(LocalDateTime.now());
-        userRepository.save(user);
-
-        return authTokenRepository.save(authToken);
     }
 
     private String generateAuthToken() {

src/main/java/ru/soune/nocopy/service/auth/CleanupTokenSessionsService.java

@@ -0,0 +1,38 @@
+package ru.soune.nocopy.service.auth;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+import org.springframework.transaction.annotation.Transactional;
+import ru.soune.nocopy.entity.AuthToken;
+import ru.soune.nocopy.repository.AuthTokenRepository;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class CleanupTokenSessionsService {
+    @Autowired
+    private AuthTokenRepository authTokenRepository;
+
+    @Value("${file.storage.auth-token-life-hours}")
+    private int authTokenLife;
+
+    @Transactional
+    @Scheduled(fixedDelay = 30000)
+    public void cleanupExpiredFiles() {
+        LocalDateTime hourBefore = LocalDateTime.now().minusHours(authTokenLife);
+
+        List<AuthToken> tokensForDelete = authTokenRepository.findByLastUsedAtBefore(hourBefore).stream().toList();
+        List<AuthToken> tokensDeleteWithNullUpdate = authTokenRepository.findByLastUsedAtAndExpiresAtBefore(
+                null, hourBefore).stream().toList();
+
+        authTokenRepository.deleteAll(tokensForDelete);
+        authTokenRepository.deleteAll(tokensDeleteWithNullUpdate);
+    }
+}

src/main/java/ru/soune/nocopy/service/auth/ExternalAuthUserService.java

@@ -1,102 +0,0 @@
-package ru.soune.nocopy.service.auth;
-
-import lombok.RequiredArgsConstructor;
-import org.springframework.stereotype.Service;
-import org.springframework.transaction.annotation.Transactional;
-import ru.soune.nocopy.entity.User;
-import ru.soune.nocopy.entity.auth.ExternalAuthProvider;
-import ru.soune.nocopy.repository.ExternalAuthProviderRepository;
-import ru.soune.nocopy.repository.UserRepository;
-
-import java.time.LocalDateTime;
-import java.util.Optional;
-
-@Service
-@RequiredArgsConstructor
-public class ExternalAuthUserService {
-    private final UserRepository userRepository;
-
-    private final ExternalAuthProviderRepository externalAuthProviderRepository;
-
-    @Transactional
-    public User findOrCreateUserFromVK(String vkUserId, String fullName, String email,
-                                       String vkAccessToken, String vkRefreshToken, Integer expiresIn) {
-
-        Optional<User> existingByVkId = userRepository.findByExternalProvider(ExternalAuthProvider.ProviderType.VK,
-                vkUserId);
-
-        if (existingByVkId.isPresent()) {
-            User user = existingByVkId.get();
-            updateVKProvider(user, vkAccessToken, vkRefreshToken, expiresIn, email);
-
-            return user;
-        }
-
-        if (email != null && !email.isBlank()) {
-            Optional<User> existingByEmail = userRepository.findByEmail(email);
-
-            if (existingByEmail.isPresent()) {
-                User user = existingByEmail.get();
-                linkVKProvider(user, vkUserId, vkAccessToken, vkRefreshToken, expiresIn, email);
-
-                return user;
-            }
-        }
-
-        return createNewUserWithVK(vkUserId, fullName, email, vkAccessToken, vkRefreshToken, expiresIn);
-    }
-
-    private User createNewUserWithVK(String vkUserId, String fullName, String email,
-                                     String vkAccessToken, String vkRefreshToken, Integer expiresIn) {
-        User newUser = User.builder()
-                .fullName(fullName)
-                .email(email)
-                .password("generateRandomPassword()")
-                .isActive(true)
-                .build();
-
-        User savedUser = userRepository.save(newUser);
-
-        linkVKProvider(savedUser, vkUserId, vkAccessToken, vkRefreshToken, expiresIn, email);
-
-        return savedUser;
-    }
-
-    private void linkVKProvider(User user, String vkUserId, String vkAccessToken, String vkRefreshToken,
-                                Integer expiresIn, String email) {
-        ExternalAuthProvider provider = ExternalAuthProvider.builder()
-                .user(user)
-                .providerType(ExternalAuthProvider.ProviderType.VK)
-                .providerUserId(vkUserId)
-                .accessToken(vkAccessToken)
-                .refreshToken(vkRefreshToken)
-                .tokenExpiresAt(LocalDateTime.now().plusSeconds(expiresIn))
-                .email(email)
-                .isActive(true)
-                .build();
-
-        externalAuthProviderRepository.save(provider);
-
-        user.getExternalAuthProviders().add(provider);
-    }
-
-    private void updateVKProvider(User user, String vkAccessToken, String vkRefreshToken,
-                                  Integer expiresIn, String email) {
-        Optional<ExternalAuthProvider> existingProvider = user.getProvider(ExternalAuthProvider.ProviderType.VK);
-
-        if (existingProvider.isPresent()) {
-            ExternalAuthProvider provider = existingProvider.get();
-            provider.setAccessToken(vkAccessToken);
-            provider.setTokenExpiresAt(LocalDateTime.now().plusSeconds(expiresIn));
-            provider.setEmail(email);
-            provider.setRefreshToken(vkRefreshToken);
-            provider.setLastUsedAt(LocalDateTime.now());
-
-            externalAuthProviderRepository.save(provider);
-        }
-    }
-
-    private String generateRandomPassword() {
-        return java.util.UUID.randomUUID().toString();
-    }
-}

src/main/java/ru/soune/nocopy/service/file/FileStatsService.java

@@ -1,93 +0,0 @@
-package ru.soune.nocopy.service.file;
-
-import lombok.RequiredArgsConstructor;
-import org.springframework.stereotype.Service;
-import ru.soune.nocopy.dto.file.FileInfoUserResponse;
-import ru.soune.nocopy.entity.file.FileEntity;
-import ru.soune.nocopy.entity.file.FileStatus;
-import ru.soune.nocopy.entity.file.FileType;
-import ru.soune.nocopy.repository.FileEntityRepository;
-
-import java.util.List;
-
-@Service
-@RequiredArgsConstructor
-public class FileStatsService {
-    private final FileEntityRepository fileEntityRepository;
-
-    public FileInfoUserResponse getUserFileStats(Long userId) {
-        List<FileEntity> userFiles = fileEntityRepository.findByUserId(userId);
-        return calculateStats(userFiles);
-    }
-
-    public FileInfoUserResponse calculateStats(List<FileEntity> files) {
-        return FileInfoUserResponse.builder()
-                .allFileSize(calculateTotalSize(files))
-                .fileCount(calculateTotalCount(files))
-                .filesCheck(calculateByStatus(files, FileStatus.CHECKED))
-                .filesViolation(calculateByStatus(files, FileStatus.VIOLATION))
-
-                .imagesSize(calculateMediaSize(files, FileType.IMAGE))
-                .imagesCount(calculateMediaCount(files, FileType.IMAGE))
-                .imagesCheck(calculateMediaByStatus(files, FileType.IMAGE, FileStatus.CHECKED))
-                .imagesViolations(calculateMediaByStatus(files, FileType.IMAGE, FileStatus.VIOLATION))
-
-                .videosSize(calculateMediaSize(files, FileType.VIDEO))
-                .videosCount(calculateMediaCount(files, FileType.VIDEO))
-                .videosCheck(calculateMediaByStatus(files, FileType.VIDEO, FileStatus.CHECKED))
-                .videosViolations(calculateMediaByStatus(files, FileType.VIDEO, FileStatus.VIOLATION))
-
-                .audiosSize(calculateMediaSize(files, FileType.AUDIO))
-                .audiosCount(calculateMediaCount(files, FileType.AUDIO))
-                .audiosCheck(calculateMediaByStatus(files, FileType.AUDIO, FileStatus.CHECKED))
-                .audiosViolations(calculateMediaByStatus(files, FileType.AUDIO, FileStatus.VIOLATION))
-                .build();
-    }
-    private Long calculateTotalSize(List<FileEntity> files) {
-        return files.stream()
-                .filter(file -> file.getStatus() != FileStatus.DELETED)
-                .mapToLong(FileEntity::getFileSize)
-                .sum();
-    }
-
-    private Integer calculateTotalCount(List<FileEntity> files) {
-        return (int) files.stream()
-                .filter(file -> file.getStatus() != FileStatus.DELETED)
-                .count();
-    }
-
-    private Integer calculateByStatus(List<FileEntity> files, FileStatus status) {
-        return (int) files.stream()
-                .filter(file -> file.getStatus() == status)
-                .count();
-    }
-
-    private Long calculateMediaSize(List<FileEntity> files, FileType fileType) {
-        return files.stream()
-                .filter(file -> file.getStatus() != FileStatus.DELETED)
-                .filter(file -> isFileType(file, fileType))
-                .mapToLong(FileEntity::getFileSize)
-                .sum();
-    }
-
-    private Integer calculateMediaCount(List<FileEntity> files, FileType fileType) {
-        return (int) files.stream()
-                .filter(file -> file.getStatus() != FileStatus.DELETED)
-                .filter(file -> isFileType(file, fileType))
-                .count();
-    }
-
-    private Integer calculateMediaByStatus(List<FileEntity> files, FileType fileType, FileStatus status) {
-        return (int) files.stream()
-                .filter(file -> isFileType(file, fileType))
-                .filter(file -> file.getStatus() == status)
-                .count();
-    }
-
-    private boolean isFileType(FileEntity file, FileType fileType) {
-        if (file.getFileExtension() == null) return false;
-
-        String extension = file.getFileExtension().toLowerCase().replace(".", "");
-        return fileType.supportsExtension(extension);
-    }
-}

src/main/resources/application.yaml

@@ -30,15 +30,9 @@ file:
     max-retry-attempts: ${MAX_RETRY_ATTEMPTS:3}
     chunk-timeout-ms: ${CHUNK_TIMEOUT_MS:300000}  # 5 минут
     temp-ttl-hours: ${TEMP_TTL_HOURS:72}  # 3 дня
+    auth-token-life-hours: ${AUTH_TOKEN_LIFE:1}  # 1 час
     session-expiry-hours: ${SESSION_EXPIRY_HOURS:24}
 
-auth:
-  vk:
-    oauth2: "https://id.vk.ru/oauth2/auth"
-    user_info: "https://id.vk.ru/oauth2/user_info"
-    client_id: "54389559"
-    redirect_uri: "http://localhost"
-
 security:
   cors:
     allowed-origins: "*"

src/test/java/ru/soune/nocopy/service/AuthServiceTest.java

@@ -9,12 +9,13 @@ import org.mockito.MockitoAnnotations;
 import org.springframework.context.MessageSource;
 import org.springframework.security.crypto.password.PasswordEncoder;
 import ru.soune.nocopy.dto.LoginRequest;
-import ru.soune.nocopy.entity.auth.AuthToken;
+import ru.soune.nocopy.entity.AuthToken;
 import ru.soune.nocopy.entity.User;
 import ru.soune.nocopy.exception.NotValidationPasswordException;
 import ru.soune.nocopy.exception.UserNotFoundException;
 import ru.soune.nocopy.repository.AuthTokenRepository;
 import ru.soune.nocopy.repository.UserRepository;
+import ru.soune.nocopy.service.auth.AuthService;
 
 import java.util.Optional;