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

@@ -0,0 +1,28 @@
+package ru.soune.nocopy.configuration;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import ru.soune.nocopy.handler.*;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@Configuration
+public class HandlerConfig {
+
+    @Bean
+    public Map<Integer, RequestHandler> handlers(
+            RegRequestHandler reg,
+            LoginRequestHandler login,
+            FileUploadHandler upload,
+            FileEntityHandler file
+    ) {
+        Map<Integer, RequestHandler> map = new HashMap<>();
+        map.put(20001, login);
+        map.put(20002, reg);
+        map.put(20004, upload);
+        map.put(20005, file);
+
+        return map;
+    }
+}

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

@@ -1,9 +1,7 @@
 package ru.soune.nocopy.controller;
 
-import jakarta.annotation.PostConstruct;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.context.ApplicationContext;
 import org.springframework.http.ResponseEntity;
 import org.springframework.validation.BindingResult;
 import org.springframework.validation.FieldError;
@@ -19,10 +17,7 @@ import ru.soune.nocopy.dto.file.UploadProgress;
 import ru.soune.nocopy.entity.file.UploadStatus;
 import ru.soune.nocopy.exception.NotValidFieldException;
 import ru.soune.nocopy.exception.ValidationException;
-import ru.soune.nocopy.handler.FileUploadHandler;
+import ru.soune.nocopy.handler.*;
-import ru.soune.nocopy.handler.LoginRequestHandler;
-import ru.soune.nocopy.handler.RegRequestHandler;
-import ru.soune.nocopy.handler.RequestHandler;
 import ru.soune.nocopy.service.file.FileUploadService;
 
 import java.util.HashMap;
@@ -35,21 +30,10 @@ import java.util.stream.Collectors;
 @RequestMapping("/api")
 @RequiredArgsConstructor
 public class ApiController {
-    private final ApplicationContext applicationContext;
     private final FileUploadService fileUploadService;
 
-    private Map<Integer, RequestHandler> handlers = new HashMap<>();
+    private final Map<Integer, RequestHandler> handlers;
 
-    @PostConstruct
-    public void init() {
-        RegRequestHandler regHandler = applicationContext.getBean(RegRequestHandler.class);
-        LoginRequestHandler loginHandler = applicationContext.getBean(LoginRequestHandler.class);
-        FileUploadHandler fileUploadHandler = applicationContext.getBean(FileUploadHandler.class);
-
-        handlers.put(20004, fileUploadHandler);
-        handlers.put(20002, regHandler);
-        handlers.put(20001, loginHandler);
-    }
 
     @PostMapping("/v{version}/data")
     public ResponseEntity<?> handlePostRequest(@RequestBody BaseRequest request,

src/main/java/ru/soune/nocopy/controller/file/FileEntityController.java

@@ -1,210 +0,0 @@
-package ru.soune.nocopy.controller.file;
-
-import lombok.RequiredArgsConstructor;
-import lombok.extern.slf4j.Slf4j;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.*;
-import ru.soune.nocopy.dto.file.FileApiResponse;
-import ru.soune.nocopy.dto.file.FileEntityResponse;
-import ru.soune.nocopy.dto.file.FileListResponse;
-import ru.soune.nocopy.entity.AuthToken;
-import ru.soune.nocopy.exception.NotFoundAuthToken;
-import ru.soune.nocopy.repository.AuthTokenRepository;
-import ru.soune.nocopy.service.file.FileEntityService;
-
-@Slf4j
-@RestController
-@RequestMapping("/api/file-entities")
-@RequiredArgsConstructor
-public class FileEntityController {
-
-    private final FileEntityService fileEntityService;
-    private final AuthTokenRepository authTokenRepository;
-
-    /**
-     * Получить информацию о файле по ID
-     */
-    @GetMapping("/{fileId}")
-    public ResponseEntity<FileApiResponse<FileEntityResponse>> getFileInfo(
-            @PathVariable String fileId,
-            @RequestHeader("Authorization") String tokenHeader) {
-
-        try {
-            Long userId = getUserIdFromToken(tokenHeader);
-            FileEntityResponse fileInfo = fileEntityService.getById(fileId);
-
-            if (!fileInfo.getUserId().equals(userId)) {
-                return ResponseEntity.status(403)
-                        .body(FileApiResponse.error("Access denied"));
-            }
-
-            return ResponseEntity.ok(FileApiResponse.success(fileInfo));
-
-        } catch (NotFoundAuthToken e) {
-            return ResponseEntity.status(401)
-                    .body(FileApiResponse.error("Authentication required"));
-        } catch (Exception e) {
-            log.error("Error getting file info", e);
-            return ResponseEntity.badRequest()
-                    .body(FileApiResponse.error("Failed to get file info: " + e.getMessage()));
-        }
-    }
-
-    /**
-     * Получить информацию о файле по ID сессии загрузки
-     */
-    @GetMapping("/by-session/{uploadSessionId}")
-    public ResponseEntity<FileApiResponse<FileEntityResponse>> getFileByUploadSession(
-            @PathVariable String uploadSessionId,
-            @RequestHeader("Authorization") String tokenHeader) {
-
-        try {
-            Long userId = getUserIdFromToken(tokenHeader);
-            FileEntityResponse fileInfo = fileEntityService.getByUploadSessionId(uploadSessionId);
-
-            if (!fileInfo.getUserId().equals(userId)) {
-                return ResponseEntity.status(403)
-                        .body(FileApiResponse.error("Access denied"));
-            }
-
-            return ResponseEntity.ok(FileApiResponse.success(fileInfo));
-
-        } catch (NotFoundAuthToken e) {
-            return ResponseEntity.status(401)
-                    .body(FileApiResponse.error("Authentication required"));
-        } catch (Exception e) {
-            log.error("Error getting file by session", e);
-            return ResponseEntity.badRequest()
-                    .body(FileApiResponse.error("Failed to get file: " + e.getMessage()));
-        }
-    }
-
-    /**
-     * Получить все файлы пользователя
-     */
-    @GetMapping("/my-files")
-    public ResponseEntity<FileApiResponse<FileListResponse>> getUserFiles(
-            @RequestHeader("Authorization") String tokenHeader,
-            @RequestParam(defaultValue = "1") int page,
-            @RequestParam(defaultValue = "20") int pageSize) {
-
-        try {
-            Long userId = getUserIdFromToken(tokenHeader);
-            FileListResponse files = fileEntityService.getUserFiles(userId, page, pageSize);
-
-            return ResponseEntity.ok(FileApiResponse.success(files));
-
-        } catch (NotFoundAuthToken e) {
-            return ResponseEntity.status(401)
-                    .body(FileApiResponse.error("Authentication required"));
-        } catch (Exception e) {
-            log.error("Error getting user files", e);
-            return ResponseEntity.badRequest()
-                    .body(FileApiResponse.error("Failed to get files: " + e.getMessage()));
-        }
-    }
-
-    /**
-     * Поиск файлов пользователя
-     */
-    @GetMapping("/search")
-    public ResponseEntity<FileApiResponse<FileListResponse>> searchFiles(
-            @RequestParam String query,
-            @RequestHeader("Authorization") String tokenHeader,
-            @RequestParam(defaultValue = "1") int page,
-            @RequestParam(defaultValue = "20") int pageSize) {
-
-        try {
-            Long userId = getUserIdFromToken(tokenHeader);
-            FileListResponse allFiles = fileEntityService.getUserFiles(userId, 1, 1000);
-
-            var filteredFiles = allFiles.getFiles().stream()
-                    .filter(f -> f.getOriginalFileName().toLowerCase().contains(query.toLowerCase()))
-                    .toList();
-
-            int start = (page - 1) * pageSize;
-            int end = Math.min(start + pageSize, filteredFiles.size());
-
-            FileListResponse response = FileListResponse.builder()
-                    .files(filteredFiles.subList(start, Math.min(end, filteredFiles.size())))
-                    .totalCount(filteredFiles.size())
-                    .totalSize(allFiles.getTotalSize())
-                    .formattedTotalSize(allFiles.getFormattedTotalSize())
-                    .page(page)
-                    .pageSize(pageSize)
-                    .build();
-
-            return ResponseEntity.ok(FileApiResponse.success(response));
-
-        } catch (NotFoundAuthToken e) {
-            return ResponseEntity.status(401)
-                    .body(FileApiResponse.error("Authentication required"));
-        } catch (Exception e) {
-            log.error("Error searching files", e);
-            return ResponseEntity.badRequest()
-                    .body(FileApiResponse.error("Failed to search files: " + e.getMessage()));
-        }
-    }
-
-    /**
-     * Получить общий размер файлов пользователя
-     */
-    @GetMapping("/storage/usage")
-    public ResponseEntity<FileApiResponse<Long>> getStorageUsage(
-            @RequestHeader("Authorization") String tokenHeader) {
-
-        try {
-            Long userId = getUserIdFromToken(tokenHeader);
-            long usage = fileEntityService.getUserStorageUsed(userId);
-
-            return ResponseEntity.ok(FileApiResponse.success(usage));
-
-        } catch (NotFoundAuthToken e) {
-            return ResponseEntity.status(401)
-                    .body(FileApiResponse.error("Authentication required"));
-        } catch (Exception e) {
-            log.error("Error getting storage usage", e);
-            return ResponseEntity.badRequest()
-                    .body(FileApiResponse.error("Failed to get storage usage: " + e.getMessage()));
-        }
-    }
-
-    /**
-     * Пометить файл как удаленный
-     */
-    @DeleteMapping("/{fileId}")
-    public ResponseEntity<FileApiResponse<Void>> deleteFile(
-            @PathVariable String fileId,
-            @RequestHeader("Authorization") String tokenHeader) {
-
-        try {
-            Long userId = getUserIdFromToken(tokenHeader);
-            FileEntityResponse fileInfo = fileEntityService.getById(fileId);
-
-            if (!fileInfo.getUserId().equals(userId)) {
-                return ResponseEntity.status(403)
-                        .body(FileApiResponse.error("Access denied"));
-            }
-
-            fileEntityService.markAsDeleted(fileId);
-
-            return ResponseEntity.ok(FileApiResponse.success(
-                    "File marked as deleted", null));
-
-        } catch (NotFoundAuthToken e) {
-            return ResponseEntity.status(401)
-                    .body(FileApiResponse.error("Authentication required"));
-        } catch (Exception e) {
-            log.error("Error deleting file", e);
-            return ResponseEntity.badRequest()
-                    .body(FileApiResponse.error("Failed to delete file: " + e.getMessage()));
-        }
-    }
-
-    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/file/FileUploadController.java

@@ -1,65 +0,0 @@
-package ru.soune.nocopy.controller.file;
-
-import jakarta.validation.Valid;
-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 org.springframework.web.multipart.MultipartFile;
-import ru.soune.nocopy.dto.file.FileApiResponse;
-import ru.soune.nocopy.dto.file.InitUploadRequest;
-import ru.soune.nocopy.dto.file.UploadProgressResponse;
-import ru.soune.nocopy.entity.AuthToken;
-import ru.soune.nocopy.entity.file.FileType;
-import ru.soune.nocopy.entity.file.FileUploadSession;
-import ru.soune.nocopy.entity.file.UploadStatus;
-import ru.soune.nocopy.exception.FileUploadException;
-import ru.soune.nocopy.exception.NotFoundAuthToken;
-import ru.soune.nocopy.exception.UploadSessionNotFoundException;
-import ru.soune.nocopy.repository.AuthTokenRepository;
-import ru.soune.nocopy.repository.FileUploadSessionRepository;
-import ru.soune.nocopy.service.file.FileUploadService;
-
-import java.util.*;
-
-@Slf4j
-@RestController
-@RequestMapping("/api/files")
-@RequiredArgsConstructor
-public class FileUploadController {
-
-    private final FileUploadService fileUploadService;
-
-    @PostMapping("/chunk")
-    public ResponseEntity<FileApiResponse<UploadProgressResponse>> uploadChunk(
-            @RequestParam("uploadId") String uploadId,
-            @RequestParam("chunkNumber") Integer chunkNumber,
-            @RequestParam("chunk") MultipartFile chunk) {
-
-        log.info("Uploading chunk {} for session {}, file size: {} bytes",
-                chunkNumber, uploadId, chunk.getSize());
-
-        if (chunk.isEmpty()) {
-            return ResponseEntity.badRequest()
-                    .body(FileApiResponse.error("Chunk file is empty"));
-        }
-
-        if (uploadId == null || uploadId.isBlank()) {
-            return ResponseEntity.badRequest()
-                    .body(FileApiResponse.error("Upload ID is required"));
-        }
-
-        try {
-            UploadProgressResponse progress = fileUploadService.uploadChunk(
-                    uploadId, chunkNumber, chunk);
-
-            return ResponseEntity.ok(FileApiResponse.success(progress));
-
-        } catch (Exception e) {
-            log.error("Error uploading chunk", e);
-            return ResponseEntity.badRequest()
-                    .body(FileApiResponse.error(e.getMessage()));
-        }
-    }
-}

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

@@ -11,7 +11,8 @@ public enum MessageCode {
     INVALID_JSON_BODY(2, "Invalid fields in JSON object"),
     INCOMPLETE_UPLOAD(2, "Not load all chunks"),
     MSG_ID_NOT_FOUND(4, "Message id not found"),
-
+    FILE_ENTITY_ERROR(2, "File entity error"),
+    ACCESS_DENIED(2, "Access denied"),
     AUTH_EMAIL_NOT_FOUND(4, "Email 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/file/DeleteFileResponse.java

@@ -0,0 +1,19 @@
+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
+@AllArgsConstructor
+@NoArgsConstructor
+public class DeleteFileResponse {
+    @JsonProperty("file_id")
+    private String fileId;
+
+    @JsonProperty("message")
+    private String message;
+}

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

@@ -0,0 +1,34 @@
+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
+@AllArgsConstructor
+@NoArgsConstructor
+public class FileEntityRequest {
+    @JsonProperty("action")
+    private String action;
+
+    @JsonProperty("file_id")
+    private String fileId;
+
+    @JsonProperty("upload_session_id")
+    private String uploadSessionId;
+
+    @JsonProperty("query")
+    private String query;
+
+    @JsonProperty("page")
+    private Integer page;
+
+    @JsonProperty("page_size")
+    private Integer pageSize;
+
+    @JsonProperty("token")
+    private String token;
+}

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

@@ -1,5 +1,6 @@
 package ru.soune.nocopy.dto.file;
 
+import com.fasterxml.jackson.annotation.JsonProperty;
 import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Data;
@@ -9,14 +10,24 @@ import java.util.List;
 
 @Data
 @Builder
-@NoArgsConstructor
 @AllArgsConstructor
+@NoArgsConstructor
 public class FileListResponse {
-
+    @JsonProperty("files")
     private List<FileEntityResponse> files;
-    private int totalCount;
+
-    private long totalSize;
+    @JsonProperty("total_count")
+    private Integer totalCount;
+
+    @JsonProperty("total_size")
+    private Long totalSize;
+
+    @JsonProperty("formatted_total_size")
     private String formattedTotalSize;
-    private int page;
+
-    private int pageSize;
+    @JsonProperty("page")
+    private Integer page;
+
+    @JsonProperty("page_size")
+    private Integer pageSize;
 }

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

@@ -0,0 +1,22 @@
+package ru.soune.nocopy.dto.file;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class FileResponse {
+
+    private List<FileEntityResponse> files;
+    private int totalCount;
+    private long totalSize;
+    private String formattedTotalSize;
+    private int page;
+    private int pageSize;
+}

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

@@ -0,0 +1,22 @@
+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
+@AllArgsConstructor
+@NoArgsConstructor
+public class StorageUsageResponse {
+    @JsonProperty("user_id")
+    private Long userId;
+
+    @JsonProperty("storage_used")
+    private Long storageUsed;
+
+    @JsonProperty("formatted_storage_used")
+    private String formattedStorageUsed;
+}

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

@@ -0,0 +1,292 @@
+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.*;
+import ru.soune.nocopy.dto.file.*;
+import ru.soune.nocopy.entity.AuthToken;
+import ru.soune.nocopy.exception.NotFoundAuthToken;
+import ru.soune.nocopy.repository.AuthTokenRepository;
+import ru.soune.nocopy.service.file.FileEntityService;
+
+import java.util.Arrays;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class FileEntityHandler implements RequestHandler {
+
+    private final FileEntityService fileEntityService;
+    private final AuthTokenRepository authTokenRepository;
+    private final ObjectMapper objectMapper;
+
+    @Override
+    public BaseResponse handle(BaseRequest request) {
+        try {
+            FileEntityRequest fileRequest = objectMapper.convertValue(
+                    request.getMessageBody(), FileEntityRequest.class);
+
+            String action = fileRequest.getAction();
+
+            switch (action) {
+                case "get_file_info":
+                    return handleGetFileInfo(request, fileRequest);
+                case "get_file_by_session":
+                    return handleGetFileBySession(request, fileRequest);
+                case "get_user_files":
+                    return handleGetUserFiles(request, fileRequest);
+                case "search_files":
+                    return handleSearchFiles(request, fileRequest);
+                case "get_storage_usage":
+                    return handleGetStorageUsage(request, fileRequest);
+                case "delete_file":
+                    return handleDeleteFile(request, fileRequest);
+                default:
+                    ActionResponse response = ActionResponse.builder()
+                            .action(action)
+                            .availableActions(Arrays.asList(
+                                    "get_file_info", "get_file_by_session", "get_user_files",
+                                    "search_files", "get_storage_usage", "delete_file"))
+                            .build();
+
+                    return new BaseResponse(request.getMsgId(),
+                            MessageCode.INVALID_ACTION.getCode(),
+                            "Invalid action: " + action,
+                            response);
+            }
+        } catch (Exception e) {
+            log.error("Error in FileEntityHandler", e);
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.FILE_UPLOAD_ERROR.getCode(),
+                    "Handler error: " + e.getMessage(),
+                    null);
+        }
+    }
+
+    private BaseResponse handleGetFileInfo(BaseRequest request, FileEntityRequest fileRequest) {
+        try {
+            Long userId = getUserIdFromToken(fileRequest.getToken());
+            FileEntityResponse fileInfo = fileEntityService.getById(fileRequest.getFileId());
+
+            if (!fileInfo.getUserId().equals(userId)) {
+                return new BaseResponse(request.getMsgId(),
+                        MessageCode.ACCESS_DENIED.getCode(),
+                        "Access denied",
+                        null);
+            }
+
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.SUCCESS.getCode(),
+                    MessageCode.SUCCESS.getDescription(),
+                    fileInfo);
+
+        } catch (NotFoundAuthToken e) {
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.INVALID_TOKEN.getCode(),
+                    "Authentication required",
+                    null);
+        } catch (Exception e) {
+            log.error("Error getting file info", e);
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.FILE_UPLOAD_ERROR.getCode(),
+                    "Failed to get file info: " + e.getMessage(),
+                    null);
+        }
+    }
+
+    private BaseResponse handleGetFileBySession(BaseRequest request, FileEntityRequest fileRequest) {
+        try {
+            Long userId = getUserIdFromToken(fileRequest.getToken());
+            FileEntityResponse fileInfo = fileEntityService.getByUploadSessionId(fileRequest.getUploadSessionId());
+
+            if (!fileInfo.getUserId().equals(userId)) {
+                return new BaseResponse(request.getMsgId(),
+                        MessageCode.ACCESS_DENIED.getCode(),
+                        "Access denied",
+                        null);
+            }
+
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.SUCCESS.getCode(),
+                    MessageCode.SUCCESS.getDescription(),
+                    fileInfo);
+
+        } catch (NotFoundAuthToken e) {
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.INVALID_TOKEN.getCode(),
+                    "Authentication required",
+                    null);
+        } catch (Exception e) {
+            log.error("Error getting file by session", e);
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.FILE_UPLOAD_ERROR.getCode(),
+                    "Failed to get file: " + e.getMessage(),
+                    null);
+        }
+    }
+
+    private BaseResponse handleGetUserFiles(BaseRequest request, FileEntityRequest fileRequest) {
+        try {
+            Long userId = getUserIdFromToken(fileRequest.getToken());
+            int page = fileRequest.getPage() != null ? fileRequest.getPage() : 1;
+            int pageSize = fileRequest.getPageSize() != null ? fileRequest.getPageSize() : 20;
+
+            FileResponse files = fileEntityService.getUserFiles(userId, page, pageSize);
+
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.SUCCESS.getCode(),
+                    MessageCode.SUCCESS.getDescription(),
+                    files);
+
+        } catch (NotFoundAuthToken e) {
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.INVALID_TOKEN.getCode(),
+                    "Authentication required",
+                    null);
+        } catch (Exception e) {
+            log.error("Error getting user files", e);
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.FILE_UPLOAD_ERROR.getCode(),
+                    "Failed to get files: " + e.getMessage(),
+                    null);
+        }
+    }
+
+    private BaseResponse handleSearchFiles(BaseRequest request, FileEntityRequest fileRequest) {
+        try {
+            Long userId = getUserIdFromToken(fileRequest.getToken());
+            int page = fileRequest.getPage() != null ? fileRequest.getPage() : 1;
+            int pageSize = fileRequest.getPageSize() != null ? fileRequest.getPageSize() : 20;
+
+            if (fileRequest.getQuery() == null || fileRequest.getQuery().isBlank()) {
+                return handleGetUserFiles(request, fileRequest);
+            }
+
+            FileResponse allFiles = fileEntityService.getUserFiles(userId, 1, 1000);
+
+            var filteredFiles = allFiles.getFiles().stream()
+                    .filter(f -> f.getOriginalFileName().toLowerCase().contains(fileRequest.getQuery().toLowerCase()))
+                    .toList();
+
+            int start = (page - 1) * pageSize;
+            int end = Math.min(start + pageSize, filteredFiles.size());
+
+            FileListResponse response = FileListResponse.builder()
+                    .files(filteredFiles.subList(start, Math.min(end, filteredFiles.size())))
+                    .totalCount(filteredFiles.size())
+                    .totalSize(allFiles.getTotalSize())
+                    .formattedTotalSize(allFiles.getFormattedTotalSize())
+                    .page(page)
+                    .pageSize(pageSize)
+                    .build();
+
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.SUCCESS.getCode(),
+                    MessageCode.SUCCESS.getDescription(),
+                    response);
+
+        } catch (NotFoundAuthToken e) {
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.INVALID_TOKEN.getCode(),
+                    "Authentication required",
+                    null);
+        } catch (Exception e) {
+            log.error("Error searching files", e);
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.FILE_UPLOAD_ERROR.getCode(),
+                    "Failed to search files: " + e.getMessage(),
+                    null);
+        }
+    }
+
+    private BaseResponse handleGetStorageUsage(BaseRequest request, FileEntityRequest fileRequest) {
+        try {
+            Long userId = getUserIdFromToken(fileRequest.getToken());
+            long usage = fileEntityService.getUserStorageUsed(userId);
+
+            StorageUsageResponse response = StorageUsageResponse.builder()
+                    .userId(userId)
+                    .storageUsed(usage)
+                    .formattedStorageUsed(formatFileSize(usage))
+                    .build();
+
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.SUCCESS.getCode(),
+                    MessageCode.SUCCESS.getDescription(),
+                    response);
+
+        } catch (NotFoundAuthToken e) {
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.INVALID_TOKEN.getCode(),
+                    "Authentication required",
+                    null);
+        } catch (Exception e) {
+            log.error("Error getting storage usage", e);
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.FILE_UPLOAD_ERROR.getCode(),
+                    "Failed to get storage usage: " + e.getMessage(),
+                    null);
+        }
+    }
+
+    private BaseResponse handleDeleteFile(BaseRequest request, FileEntityRequest fileRequest) {
+        try {
+            Long userId = getUserIdFromToken(fileRequest.getToken());
+            FileEntityResponse fileInfo = fileEntityService.getById(fileRequest.getFileId());
+
+            if (!fileInfo.getUserId().equals(userId)) {
+                return new BaseResponse(request.getMsgId(),
+                        MessageCode.ACCESS_DENIED.getCode(),
+                        "Access denied",
+                        null);
+            }
+
+            fileEntityService.markAsDeleted(fileRequest.getFileId());
+
+            DeleteFileResponse response = DeleteFileResponse.builder()
+                    .fileId(fileRequest.getFileId())
+                    .message("File marked as deleted")
+                    .build();
+
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.SUCCESS.getCode(),
+                    "File marked as deleted",
+                    response);
+
+        } catch (NotFoundAuthToken e) {
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.INVALID_TOKEN.getCode(),
+                    "Authentication required",
+                    null);
+        } catch (Exception e) {
+            log.error("Error deleting file", e);
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.FILE_UPLOAD_ERROR.getCode(),
+                    "Failed to delete file: " + e.getMessage(),
+                    null);
+        }
+    }
+
+    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));
+        String pre = "KMGTPE".charAt(exp-1) + "";
+        return String.format("%.1f %sB", size / Math.pow(1024, exp), pre);
+    }
+}

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

@@ -5,7 +5,7 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import ru.soune.nocopy.dto.file.FileEntityResponse;
-import ru.soune.nocopy.dto.file.FileListResponse;
+import ru.soune.nocopy.dto.file.FileResponse;
 import ru.soune.nocopy.entity.file.FileEntity;
 import ru.soune.nocopy.entity.file.FileStatus;
 import ru.soune.nocopy.entity.file.FileUploadSession;
@@ -27,9 +27,6 @@ public class FileEntityService {
 
     private final FileEntityRepository fileEntityRepository;
 
-    /**
-     * Создает FileEntity на основе завершенной сессии загрузки
-     */
     @Transactional
     public FileEntity createFromUploadSession(FileUploadSession session, String checksum) {
         log.info("Creating FileEntity for upload session: {}", session.getUploadId());
@@ -72,9 +69,7 @@ public class FileEntityService {
         }
     }
 
-    /**
+
-     * Извлекает расширение файла из имени
-     */
     private String extractFileExtension(String fileName) {
         int dotIndex = fileName.lastIndexOf('.');
         if (dotIndex > 0 && dotIndex < fileName.length() - 1) {
@@ -83,9 +78,6 @@ public class FileEntityService {
         return "";
     }
 
-    /**
-     * Получает FileEntity по ID
-     */
     @Transactional(readOnly = true)
     public FileEntityResponse getById(String fileId) {
         FileEntity fileEntity = fileEntityRepository.findById(fileId)
@@ -94,9 +86,6 @@ public class FileEntityService {
         return convertToResponse(fileEntity);
     }
 
-    /**
-     * Получает FileEntity по ID сессии загрузки
-     */
     @Transactional(readOnly = true)
     public FileEntityResponse getByUploadSessionId(String uploadSessionId) {
         FileEntity fileEntity = fileEntityRepository.findByUploadSessionId(uploadSessionId)
@@ -106,9 +95,6 @@ public class FileEntityService {
         return convertToResponse(fileEntity);
     }
 
-    /**
-     * Получает FileEntity по пути файла
-     */
     @Transactional(readOnly = true)
     public FileEntityResponse getByFilePath(String filePath) {
         FileEntity fileEntity = fileEntityRepository.findByFilePath(filePath)
@@ -117,11 +103,9 @@ public class FileEntityService {
         return convertToResponse(fileEntity);
     }
 
-    /**
+
-     * Получает все файлы пользователя
-     */
     @Transactional(readOnly = true)
-    public FileListResponse getAllUserFiles(Long userId) {
+    public FileResponse getAllUserFiles(Long userId) {
         List<FileEntity> fileEntities = fileEntityRepository.findByUserIdAndStatus(
                 userId, FileStatus.ACTIVE);
 
@@ -133,7 +117,7 @@ public class FileEntityService {
                 .mapToLong(FileEntity::getFileSize)
                 .sum();
 
-        return FileListResponse.builder()
+        return FileResponse.builder()
                 .files(files)
                 .totalCount(files.size())
                 .totalSize(totalSize)
@@ -143,11 +127,9 @@ public class FileEntityService {
                 .build();
     }
 
-    /**
+
-     * Получает файлы пользователя с пагинацией
-     */
     @Transactional(readOnly = true)
-    public FileListResponse getUserFiles(Long userId, int page, int pageSize) {
+    public FileResponse getUserFiles(Long userId, int page, int pageSize) {
         List<FileEntity> allFiles = fileEntityRepository.findByUserIdAndStatus(
                 userId, FileStatus.ACTIVE);
 
@@ -155,7 +137,7 @@ public class FileEntityService {
         int end = Math.min(start + pageSize, allFiles.size());
 
         if (start >= allFiles.size()) {
-            return FileListResponse.builder()
+            return FileResponse.builder()
                     .files(List.of())
                     .totalCount(allFiles.size())
                     .totalSize(0)
@@ -175,7 +157,7 @@ public class FileEntityService {
                 .mapToLong(FileEntity::getFileSize)
                 .sum();
 
-        return FileListResponse.builder()
+        return FileResponse.builder()
                 .files(files)
                 .totalCount(allFiles.size())
                 .totalSize(totalSize)
@@ -185,9 +167,6 @@ public class FileEntityService {
                 .build();
     }
 
-    /**
-     * Помечает файл как удаленный (мягкое удаление)
-     */
     @Transactional
     public void markAsDeleted(String fileId) {
         FileEntity fileEntity = fileEntityRepository.findById(fileId)
@@ -200,18 +179,12 @@ public class FileEntityService {
         log.info("FileEntity marked as deleted: {}", fileId);
     }
 
-    /**
-     * Получает общий размер файлов пользователя
-     */
     @Transactional(readOnly = true)
     public long getUserStorageUsed(Long userId) {
         Long totalSize = fileEntityRepository.getTotalSizeByUserId(userId);
         return totalSize != null ? totalSize : 0L;
     }
 
-    /**
-     * Поиск файлов пользователя по имени
-     */
     @Transactional(readOnly = true)
     public List<FileEntityResponse> searchFiles(Long userId, String query) {
         List<FileEntity> files = fileEntityRepository.searchByFileName(userId, query);
@@ -222,9 +195,6 @@ public class FileEntityService {
                 .collect(Collectors.toList());
     }
 
-    /**
-     * Проверяет, существует ли файл на диске
-     */
     private boolean checkFileExistsOnDisk(String filePath) {
         try {
             return Files.exists(Paths.get(filePath));
@@ -234,9 +204,6 @@ public class FileEntityService {
         }
     }
 
-    /**
-     * Конвертирует FileEntity в DTO
-     */
     private FileEntityResponse convertToResponse(FileEntity fileEntity) {
         boolean existsOnDisk = checkFileExistsOnDisk(fileEntity.getFilePath());
 
@@ -260,9 +227,6 @@ public class FileEntityService {
                 .build();
     }
 
-    /**
-     * Форматирует размер файла в читаемый вид
-     */
     private String formatFileSize(long size) {
         if (size < 1024) {
             return size + " B";