[feat] google API 연동

build.gradle

@@ -49,6 +49,10 @@ dependencies {
 	testImplementation 'org.springframework.security:spring-security-test'
 	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 
+	implementation 'com.google.apis:google-api-services-sheets:v4-rev516-1.23.0'
+	implementation 'com.google.auth:google-auth-library-oauth2-http:0.20.0'
+
+
 	implementation 'io.jsonwebtoken:jjwt-api:0.12.6'
 	runtimeOnly 'io.jsonwebtoken:jjwt-impl:0.12.6'
 	runtimeOnly 'io.jsonwebtoken:jjwt-jackson:0.12.6'

src/main/java/dmu/dasom/api/domain/common/exception/ErrorCode.java

@@ -16,7 +16,8 @@ public enum ErrorCode {
     ARGUMENT_NOT_VALID(400, "C007", "요청한 값이 올바르지 않습니다."),
     TOKEN_NOT_VALID(400, "C008", "토큰이 올바르지 않습니다."),
     INTERNAL_SERVER_ERROR(500, "C009", "서버에 문제가 발생하였습니다."),
-    NOT_FOUND(404, "C010", "해당 리소스를 찾을 수 없습니다.")
+    NOT_FOUND(404, "C010", "해당 리소스를 찾을 수 없습니다."),
+    WRITE_FAIL(400, "C011", "데이터를 쓰는데 실패하였습니다.")
     ;
 
     private final int status;

src/main/java/dmu/dasom/api/domain/google/controller/GoogleController.java

@@ -0,0 +1,38 @@
+package dmu.dasom.api.domain.google.controller;
+
+import dmu.dasom.api.domain.google.service.GoogleApiService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.Collections;
+import java.util.List;
+
+@RestController
+@RequestMapping("/google")
+@RequiredArgsConstructor
+public class GoogleController {
+
+    private final GoogleApiService googleApiService;
+    @Value("${google.spreadsheet.id}")
+    private String spreadsheetId;
+
+    private static final String RANGE = "A1";
+
+    @PostMapping("/write")
+    public ResponseEntity<String> writeToSheet(@RequestParam String word){
+        try{
+            List<List<Object>> values = List.of(Collections.singletonList(word));
+
+            googleApiService.writeToSheet(spreadsheetId, RANGE, values);
+            return ResponseEntity.ok("Data written successfully to the spreadsheet" + word);
+        } catch (Exception e){
+            e.printStackTrace();
+            return ResponseEntity.internalServerError().body("Failed to write data to the spreadsheet" + e.getMessage());
+        }
+    }
+}

src/main/java/dmu/dasom/api/domain/google/service/GoogleApiService.java

@@ -0,0 +1,66 @@
+package dmu.dasom.api.domain.google.service;
+
+import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
+import com.google.api.client.json.JsonFactory;
+import com.google.api.client.json.jackson2.JacksonFactory;
+
+import com.google.api.services.sheets.v4.Sheets;
+import com.google.api.services.sheets.v4.model.UpdateValuesResponse;
+import com.google.api.services.sheets.v4.model.ValueRange;
+import com.google.auth.http.HttpCredentialsAdapter;
+import com.google.auth.oauth2.GoogleCredentials;
+import dmu.dasom.api.domain.common.exception.CustomException;
+import dmu.dasom.api.domain.common.exception.ErrorCode;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.stereotype.Service;
+
+import java.io.IOException;
+import java.security.GeneralSecurityException;
+import java.util.Collections;
+import java.util.List;
+
+@Service
+public class GoogleApiService {
+
+    private static final Logger logger = LoggerFactory.getLogger(GoogleApiService.class);
+    private static final String APPLICATION_NAME = "Recruit Form";
+    private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
+    @Value("${google.credentials.file.path}")
+    private String credentialsFilePath;
+    private Sheets sheetsService;
+
+    // 해당 메소드는 sheets의 인스턴스를 얻는데 사용
+    private Sheets getSheetsService() throws IOException, GeneralSecurityException{
+        if(sheetsService == null){
+            GoogleCredentials credentials = GoogleCredentials
+                    .fromStream(new ClassPathResource(credentialsFilePath).getInputStream())
+                    .createScoped(Collections.singletonList("https://www.googleapis.com/auth/spreadsheets"));
+            sheetsService = new Sheets.Builder(GoogleNetHttpTransport.newTrustedTransport(), JSON_FACTORY, new HttpCredentialsAdapter(credentials))
+                    .setApplicationName(APPLICATION_NAME)
+                    .build();
+        }
+        return sheetsService;
+    }
+
+    public void writeToSheet(String spreadsheetId, String range, List<List<Object>> values) {
+        try {
+            Sheets service = getSheetsService();
+            ValueRange body = new ValueRange().setValues(values);
+            UpdateValuesResponse result = service.spreadsheets().values()
+                    .update(spreadsheetId, range, body)
+                    .setValueInputOption("USER_ENTERED")
+                    .execute();
+            logger.info("Updated rows: {}", result.getUpdatedRows());
+        }  catch (IOException e) {
+            logger.error("Failed to write data to the spreadsheet", e);
+            throw new CustomException(ErrorCode.WRITE_FAIL);
+        } catch (GeneralSecurityException e) {
+            logger.error("Failed to write data to the spreadsheet", e);
+            throw new CustomException(ErrorCode.INTERNAL_SERVER_ERROR);
+        }
+    }
+
+}

src/main/resources/application-credentials.yml

@@ -19,3 +19,8 @@ jwt:
   secret: ${JWT_SECRET}
   access-token-expiration: ${JWT_ACCESS_TOKEN_EXPIRATION}
   refresh-token-expiration: ${JWT_REFRESH_TOKEN_EXPIRATION}
+google:
+  credentials:
+    path: ${GOOGLE_CREDENTIALS_PATH}
+  spreadsheet:
+    id: ${GOOGLE_SPREADSHEET_ID}