Merge branch 'dev' into NCBACK-27

# Conflicts:
#	src/main/java/ru/soune/nocopy/configuration/HandlerConfig.java

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

@@ -0,0 +1,162 @@
+package ru.soune.nocopy.service;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import jakarta.annotation.PostConstruct;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Service;
+import ru.soune.nocopy.dto.BaseResponse;
+import ru.soune.nocopy.dto.MessageCode;
+import ru.soune.nocopy.dto.file.YandexSearchResponse;
+import ru.soune.nocopy.entity.file.FileEntity;
+import ru.soune.nocopy.exception.FileEntityNotFoundException;
+import ru.soune.nocopy.exception.NotValidFieldException;
+import ru.soune.nocopy.repository.FileEntityRepository;
+
+import java.io.*;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Base64;
+import java.util.Map;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class YandexSearchService {
+    private final FileEntityRepository fileEntityRepository;
+
+    private final ObjectMapper objectMapper;
+
+    @Value("${yandex.api-key}")
+    private String apiKey;
+
+    @Value("${yandex.folder-id}")
+    private String folderId;
+
+    @Value("${yandex.search-url}")
+    private String searchUrl;
+
+    @PostConstruct
+    public void init() {
+        objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+        objectMapper.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);
+    }
+
+    public YandexSearchResponse searchByFileEntity(String fileId) throws IOException {
+        FileEntity fileEntity = fileEntityRepository.findById(fileId)
+                .orElseThrow(() -> {
+                    throw new NotValidFieldException("File not found", new BaseResponse(20007,
+                            MessageCode.FILE_NOT_FOUND.getCode(), MessageCode.FILE_NOT_FOUND.getDescription(),
+                            Map.of("fileId",fileId)));
+                });
+        byte[] fileBytes;
+
+        if (!isImageFile(fileEntity)) {
+            log.error("File not image: {}", fileEntity.getMimeType());
+            throw new NotValidFieldException("File not image", new BaseResponse(20007,
+                    MessageCode.INVALID_FIELD.getCode(), MessageCode.INVALID_FIELD.getDescription(),
+                    Map.of("file_type", fileEntity.getMimeType())));
+        }
+
+        try {
+            fileBytes = readFileFromDisk(fileEntity);
+        } catch (IOException e) {
+            throw new NotValidFieldException("File not found or cannot read file", new BaseResponse(20007,
+                    MessageCode.FILE_NOT_FOUND.getCode(), MessageCode.FILE_NOT_FOUND.getDescription(),
+                    Map.of("fileId", fileId,
+                            "filePath", fileEntity.getFilePath())));
+        }
+
+        return callYandexApi(fileBytes);
+    }
+
+    private boolean isImageFile(FileEntity fileEntity) {
+        String mimeType = fileEntity.getMimeType();
+        return mimeType != null && mimeType.startsWith("image");
+    }
+
+    private byte[] readFileFromDisk(FileEntity fileEntity) throws IOException {
+        Path filePath = Path.of(fileEntity.getFilePath());
+
+        if (!Files.exists(filePath)) {
+            throw new IOException("File not found: " + fileEntity.getFilePath());
+        }
+
+        if (!Files.isReadable(filePath)) {
+            throw new IOException("Cannot read file: " + fileEntity.getFilePath());
+        }
+
+        return Files.readAllBytes(filePath);
+    }
+
+    private YandexSearchResponse callYandexApi(byte[] imageBytes) throws IOException {
+        String imageBase64 = Base64.getEncoder().encodeToString(imageBytes);
+        String jsonRequest = String.format("{\"folderId\":\"%s\",\"data\":\"%s\",\"page\":0,\"showSimilarImages\":true}",
+                folderId, imageBase64);
+
+        URL url = new URL(searchUrl);
+        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+
+        try {
+            connection.setRequestMethod("POST");
+            connection.setRequestProperty("Authorization", "Api-Key " + apiKey);
+            connection.setRequestProperty("Content-Type", "application/json");
+            connection.setRequestProperty("Accept", "application/json");
+            connection.setConnectTimeout(30000);
+            connection.setReadTimeout(30000);
+            connection.setDoOutput(true);
+
+            try (OutputStream os = connection.getOutputStream()) {
+                byte[] input = jsonRequest.getBytes("utf-8");
+                os.write(input, 0, input.length);
+                os.flush();
+            }
+
+            int responseCode = connection.getResponseCode();
+
+            String responseBody;
+            if (responseCode == HttpURLConnection.HTTP_OK) {
+                try (BufferedReader br = new BufferedReader(
+                        new InputStreamReader(connection.getInputStream(), "utf-8"))) {
+                    responseBody = readAll(br);
+                }
+            } else {
+                try (BufferedReader br = new BufferedReader(
+                        new InputStreamReader(connection.getErrorStream(), "utf-8"))) {
+                    responseBody = readAll(br);
+                }
+                throw new IOException("Error Yandex API: " + responseCode + " - " + responseBody);
+            }
+
+            return parseJsonResponse(responseBody);
+
+        } finally {
+            connection.disconnect();
+        }
+    }
+
+    private String readAll(BufferedReader reader) throws IOException {
+        StringBuilder sb = new StringBuilder();
+        String line;
+        while ((line = reader.readLine()) != null) {
+            sb.append(line);
+        }
+        return sb.toString();
+    }
+
+    private YandexSearchResponse parseJsonResponse(String json) {
+        YandexSearchResponse response = null;
+        try {
+            response = objectMapper.readValue(json, YandexSearchResponse.class);
+        } catch (JsonProcessingException e) {
+                throw new RuntimeException(e);
+        }
+
+        return response;
+    }
+}