Feat/#12 이메일 찾기 SMS 인증 구현

.env.example

@@ -28,4 +28,9 @@ KAKAO_CLIENT_SECRET=your_kakao_client_secret
 JWT_SECRET=your_very_long_and_secret_random_string_for_signing_tokens_at_least_64_characters
 
 # 6. Frontend Redirect URL
-OAUTH2_REDIRECT_URL=http://localhost:3000/oauth2/redirect
+OAUTH2_REDIRECT_URL=http://localhost:3000/oauth2/redirect
+
+# 7. SMS
+SMS_API_KEY=your_sms_api_key
+SMS_SECRET_KEY=your_sms_secret_key
+SMS_SENDER_NUMBER=01012345678

.github/workflows/ci.yml

@@ -51,4 +51,7 @@ jobs:
           REDIS_PORT: 6379
           MAIL_USERNAME: test@example.com
           MAIL_PASSWORD: test_password
-          JWT_SECRET: dGhpcy1pcy1hLXRlc3Qtc2VjcmV0LWtleS1mb3ItY2ktdGVzdC1wdXJwb3Nlcw==
+          JWT_SECRET: dGhpcy1pcy1hLXRlc3Qtc2VjcmV0LWtleS1mb3ItY2ktdGVzdC1wdXJwb3Nlcw==
+          SMS_API_KEY: test_api_key
+          SMS_SECRET_KEY: test_secret_key
+          SMS_SENDER_NUMBER: 01000000000

build.gradle

@@ -59,6 +59,12 @@ dependencies {
 
 	//Email
 	implementation 'org.springframework.boot:spring-boot-starter-mail'
+
+	// SMS
+	implementation 'net.nurigo:sdk:4.3.0'
+
+	// Dotenv
+	implementation 'me.paulschwarz:spring-dotenv:4.0.0'
 }
 
 tasks.named('test') {

src/main/java/com/whereyouad/WhereYouAd/domains/user/application/dto/request/SmsRequest.java

@@ -0,0 +1,16 @@
+package com.whereyouad.WhereYouAd.domains.user.application.dto.request;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Pattern;
+
+public class SmsRequest {
+        public record SmsSendRequest(
+                        @NotBlank(message = "전화번호는 필수입니다.")
+                        @Pattern(regexp = "^\\d{10,11}$", message = "전화번호는 하이픈 없이 10~11자리 숫자만 입력해주세요.") String phoneNumber) {
+        }
+
+        public record SmsVerifyRequest(
+                        @NotBlank(message = "전화번호는 필수입니다.") String phoneNumber,
+                        @NotBlank(message = "인증코드는 필수입니다.") String verificationCode) {
+        }
+}

src/main/java/com/whereyouad/WhereYouAd/domains/user/application/dto/response/SmsResponse.java

@@ -0,0 +1,16 @@
+package com.whereyouad.WhereYouAd.domains.user.application.dto.response;
+
+public class SmsResponse {
+
+        public record SmsSentResponse(
+                        String message,
+                        String phoneNumber, // 전송한 휴대폰 번호
+                        long expireIn) {
+        }
+
+        public record SmsVerifiedResponse(
+                        boolean isVerified,
+                        String verificationMessage,
+                        String email) {
+        }
+}

src/main/java/com/whereyouad/WhereYouAd/domains/user/domain/service/SmsService.java

@@ -0,0 +1,95 @@
+package com.whereyouad.WhereYouAd.domains.user.domain.service;
+
+import com.whereyouad.WhereYouAd.domains.user.exception.code.UserErrorCode;
+import com.whereyouad.WhereYouAd.domains.user.exception.handler.UserHandler;
+import com.whereyouad.WhereYouAd.domains.user.persistence.entity.User;
+import com.whereyouad.WhereYouAd.domains.user.persistence.repository.UserRepository;
+import lombok.extern.slf4j.Slf4j;
+import net.nurigo.sdk.NurigoApp;
+import net.nurigo.sdk.message.model.Message;
+import com.whereyouad.WhereYouAd.domains.user.application.dto.response.SmsResponse;
+import com.whereyouad.WhereYouAd.global.utils.RedisUtil;
+import net.nurigo.sdk.message.request.SingleMessageSendingRequest;
+import net.nurigo.sdk.message.service.DefaultMessageService;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.Random;
+
+@Service
+@Transactional
+@Slf4j
+public class SmsService {
+    private final RedisUtil redisUtil;
+    private final UserRepository userRepository;
+    private final DefaultMessageService defaultMessageService;
+    private final String senderNumber;
+
+    public SmsService(RedisUtil redisUtil, UserRepository userRepository,
+            @Value("${coolSms.apiKey}") String smsApiKey,
+            @Value("${coolSms.secretKey}") String smsSecretKey,
+            @Value("${coolSms.senderNumber}") String senderNumber) {
+        this.redisUtil = redisUtil;
+        this.userRepository = userRepository;
+        this.senderNumber = senderNumber;
+        this.defaultMessageService = NurigoApp.INSTANCE.initialize(smsApiKey, smsSecretKey,
+                "https://api.coolsms.co.kr");
+    }
+
+    // SMS 전송
+    public SmsResponse.SmsSentResponse sendSms(String phoneNumber) {
+        // 이메일 찾기 기능: 가입된 유저인지 확인
+        if (!userRepository.existsByPhoneNumber(phoneNumber)) {
+            throw new UserHandler(UserErrorCode.USER_NOT_FOUND_BY_PHONE);
+        }
+
+        Message message = new Message();
+        String verificationCode = generateCode();
+
+        message.setFrom(senderNumber); // 발신 번호
+        message.setTo(phoneNumber);
+        message.setText("[Where You Ad] 이메일 찾기\n 휴대폰 인증 번호는 [" + verificationCode + "] 입니다.");
+
+        // redis 저장
+        redisUtil.setDataExpire(phoneNumber, verificationCode, 180); // 유효 기간 3분
+
+        try {
+            this.defaultMessageService.sendOne(new SingleMessageSendingRequest(message));
+        } catch (Exception e) {
+            log.error(e.getMessage());
+            throw new UserHandler(UserErrorCode.SMS_SEND_FAILED);
+        }
+
+        return new SmsResponse.SmsSentResponse("인증번호가 전송되었습니다.", phoneNumber, 180L);
+    }
+
+    // 랜덤 인증 번호 생성
+    public String generateCode() {
+        Random random = new Random();
+        int code = 100000 + random.nextInt(900000); // 6자리 인증 번호
+        return Integer.toString(code);
+    }
+
+    // 인증번호 확인
+    public boolean verifyCode(String phoneNumber, String insertedNum) {
+        String savedCode = redisUtil.getData(phoneNumber);
+
+        if (savedCode != null && savedCode.equals(insertedNum)) {
+            redisUtil.deleteData(phoneNumber);
+            // 인증 완료
+            return true;
+        }
+        return false;
+    }
+
+    // 인증번호 확인 후 유저 이메일 반환
+    public String isPhoneVerified(String phoneNumber, String insertedNum) {
+        if (verifyCode(phoneNumber, insertedNum)) {
+            User user = userRepository.findUserByPhoneNumber(phoneNumber)
+                    .orElseThrow(() -> new UserHandler(UserErrorCode.USER_NOT_FOUND_BY_PHONE));
+            return user.getEmail();
+        } else
+            throw new UserHandler(UserErrorCode.USER_SMS_NOT_VERIFIED);
+    }
+}

src/main/java/com/whereyouad/WhereYouAd/domains/user/exception/code/UserErrorCode.java

@@ -8,7 +8,7 @@
 @Getter
 @AllArgsConstructor
 public enum UserErrorCode implements BaseErrorCode {
-    //400
+    // 400
     USER_EMAIL_DUPLICATE(HttpStatus.BAD_REQUEST, "USER_400_1", "이미 사용중인 이메일 입니다."),
     USER_EMAIL_NOT_VALID(HttpStatus.BAD_REQUEST, "USER_400_2", "해당 이메일로 메일 전송에 실패했습니다."),
     USER_EMAIL_AUTH_INVALID(HttpStatus.BAD_REQUEST, "USER_400_3", "인증 코드가 올바르지 않습니다."),
@@ -17,10 +17,14 @@ public enum UserErrorCode implements BaseErrorCode {
 
     // 401
     USER_EMAIL_NOT_VERIFIED(HttpStatus.UNAUTHORIZED, "USER_401_1", "이메일 인증이 진행되지 않았습니다."),
+    USER_SMS_NOT_VERIFIED(HttpStatus.UNAUTHORIZED, "USER_401_2", "휴대폰 인증이 진행되지 않았습니다."),
 
     // 404
-    USER_NOT_FOUND(HttpStatus.NOT_FOUND, "USER_404_1", "이메일에 해당하는 사용자를 찾을 수 없습니다.")
-    ;
+    USER_NOT_FOUND(HttpStatus.NOT_FOUND, "USER_404_1", "이메일에 해당하는 사용자를 찾을 수 없습니다."),
+    USER_NOT_FOUND_BY_PHONE(HttpStatus.NOT_FOUND, "USER_404_2", "해당 전화번호를 가진 사용자를 찾을 수 없습니다."),
+
+    // 500
+    SMS_SEND_FAILED(HttpStatus.INTERNAL_SERVER_ERROR, "USER_500_1", "문자 전송에 실패했습니다.");
 
     private final HttpStatus httpStatus;
     private final String code;

src/main/java/com/whereyouad/WhereYouAd/domains/user/persistence/repository/UserRepository.java

@@ -11,6 +11,11 @@ public interface UserRepository extends JpaRepository<User, Long> {
     @Query("select u from User u where u.email = :email")
     Optional<User> findUserByEmail(@Param("email") String email);
 
-    //이메일 중복 예외 처리를 위한 이메일로 조회 메서드
+    @Query("select u from User u where u.phoneNumber = :phoneNumber")
+    Optional<User> findUserByPhoneNumber(@Param("phoneNumber") String phoneNumber);
+
+    boolean existsByPhoneNumber(String phoneNumber);
+
+    // 이메일 중복 예외 처리를 위한 이메일로 조회 메서드
     boolean existsByEmail(String email);
 }

src/main/java/com/whereyouad/WhereYouAd/domains/user/presentation/UserController.java

@@ -1,9 +1,12 @@
 package com.whereyouad.WhereYouAd.domains.user.presentation;
 
 import com.whereyouad.WhereYouAd.domains.user.application.dto.request.EmailRequest;
+import com.whereyouad.WhereYouAd.domains.user.application.dto.request.SmsRequest;
 import com.whereyouad.WhereYouAd.domains.user.application.dto.request.PwdResetRequest;
 import com.whereyouad.WhereYouAd.domains.user.application.dto.response.EmailSentResponse;
+import com.whereyouad.WhereYouAd.domains.user.application.dto.response.SmsResponse;
 import com.whereyouad.WhereYouAd.domains.user.domain.service.EmailService;
+import com.whereyouad.WhereYouAd.domains.user.domain.service.SmsService;
 import com.whereyouad.WhereYouAd.domains.user.domain.service.UserService;
 import com.whereyouad.WhereYouAd.domains.user.application.dto.request.SignUpRequest;
 import com.whereyouad.WhereYouAd.domains.user.application.dto.response.SignUpResponse;
@@ -24,6 +27,7 @@ public class UserController implements UserControllerDocs {
 
     private final UserService userService;
     private final EmailService emailService;
+    private final SmsService smsService;
 
     @PostMapping("/signup")
     public ResponseEntity<DataResponse<SignUpResponse>> signUp(@RequestBody @Valid SignUpRequest request) {
@@ -46,8 +50,21 @@ public ResponseEntity<DataResponse<String>> verifyEmail(@RequestBody @Valid Emai
         emailService.verifyEmailCode(request.email(), request.authCode());
 
         return ResponseEntity.ok(
-                DataResponse.from("이메일 인증이 성공적으로 완료되었습니다.")
-        );
+                DataResponse.from("이메일 인증이 성공적으로 완료되었습니다."));
+    }
+
+    @PostMapping("/sms-send")
+    public ResponseEntity<DataResponse<SmsResponse.SmsSentResponse>> sendSms(
+            @RequestBody @Valid SmsRequest.SmsSendRequest request) {
+        SmsResponse.SmsSentResponse smsSentResponse = smsService.sendSms(request.phoneNumber());
+        return ResponseEntity.ok(DataResponse.from(smsSentResponse));
+    }
+
+    @PostMapping("/sms-verify")
+    public ResponseEntity<DataResponse<SmsResponse.SmsVerifiedResponse>> verifySms(
+            @RequestBody @Valid SmsRequest.SmsVerifyRequest request) {
+        String email = smsService.isPhoneVerified(request.phoneNumber(), request.verificationCode());
+        return ResponseEntity.ok(DataResponse.from(new SmsResponse.SmsVerifiedResponse(true, "이메일 찾기 성공", email)));
     }
 
     @PostMapping("/password-reset/request")

src/main/java/com/whereyouad/WhereYouAd/domains/user/presentation/docs/UserControllerDocs.java

@@ -1,9 +1,11 @@
 package com.whereyouad.WhereYouAd.domains.user.presentation.docs;
 
 import com.whereyouad.WhereYouAd.domains.user.application.dto.request.EmailRequest;
+import com.whereyouad.WhereYouAd.domains.user.application.dto.request.SmsRequest;
 import com.whereyouad.WhereYouAd.domains.user.application.dto.request.PwdResetRequest;
 import com.whereyouad.WhereYouAd.domains.user.application.dto.request.SignUpRequest;
 import com.whereyouad.WhereYouAd.domains.user.application.dto.response.EmailSentResponse;
+import com.whereyouad.WhereYouAd.domains.user.application.dto.response.SmsResponse;
 import com.whereyouad.WhereYouAd.domains.user.application.dto.response.SignUpResponse;
 import com.whereyouad.WhereYouAd.global.response.DataResponse;
 import io.swagger.v3.oas.annotations.Operation;
@@ -67,4 +69,20 @@ public interface UserControllerDocs {
             @ApiResponse(responseCode = "404_1", description = "해당 이메일로 가입한 회원 존재하지 않음")
     })
     public ResponseEntity<DataResponse<String>> resetPassword(@RequestBody @Valid PwdResetRequest request);
+
+    @Operation(summary = "이메일 찾기 - SMS 인증 번호 전송 API", description = "입력받은 전화번호로 인증 번호를 전송합니다.")
+    @ApiResponses({
+            @ApiResponse(responseCode = "200", description = "성공"),
+            @ApiResponse(responseCode = "400", description = "실패")
+    })
+    public ResponseEntity<DataResponse<SmsResponse.SmsSentResponse>> sendSms(
+            @RequestBody @Valid SmsRequest.SmsSendRequest request);
+
+    @Operation(summary = "이메일 찾기 - SMS 인증 번호 확인 API", description = "전화번호와 인증 코드를 받아 맞는지 검증합니다.")
+    @ApiResponses({
+            @ApiResponse(responseCode = "200", description = "성공"),
+            @ApiResponse(responseCode = "400", description = "실패")
+    })
+    public ResponseEntity<DataResponse<SmsResponse.SmsVerifiedResponse>> verifySms(
+            @RequestBody @Valid SmsRequest.SmsVerifyRequest request);
 }

src/main/resources/application.yml

@@ -98,4 +98,10 @@ jwt:
 
 # 7. OAuth2 로그인 성공 후 프론트엔드 리다이렉트 URL
 oauth2:
-  redirect-url: ${OAUTH2_REDIRECT_URL:http://localhost:3000/oauth2/redirect}
+  redirect-url: ${OAUTH2_REDIRECT_URL:http://localhost:3000/oauth2/redirect}
+
+# 8. SMS 인증
+coolSms:
+  apiKey: ${SMS_API_KEY}
+  secretKey: ${SMS_SECRET_KEY}
+  senderNumber: ${SMS_SENDER_NUMBER}