Merge pull request #52 from IoTeaTime/feature/51-kan-104-email-send

feat: Redis를 활용한 이메일 인증 코드 발송 구현

src/main/java/org/ioteatime/meonghanyangserver/auth/service/AuthService.java

@@ -1,5 +1,9 @@
 package org.ioteatime.meonghanyangserver.auth.service;
 
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.CopyOnWriteArrayList;
+import java.util.concurrent.ThreadLocalRandom;
 import lombok.RequiredArgsConstructor;
 import org.ioteatime.meonghanyangserver.auth.dto.reponse.LoginResponse;
 import org.ioteatime.meonghanyangserver.auth.dto.reponse.RefreshResponse;
@@ -11,6 +15,8 @@
 import org.ioteatime.meonghanyangserver.common.exception.ApiExceptionImpl;
 import org.ioteatime.meonghanyangserver.common.utils.JwtUtils;
 import org.ioteatime.meonghanyangserver.group.repository.groupuser.GroupUserRepository;
+import org.ioteatime.meonghanyangserver.redis.EmailCode;
+import org.ioteatime.meonghanyangserver.redis.EmailCodeRepository;
 import org.ioteatime.meonghanyangserver.redis.RefreshToken;
 import org.ioteatime.meonghanyangserver.redis.RefreshTokenRepository;
 import org.ioteatime.meonghanyangserver.user.domain.UserEntity;
@@ -27,6 +33,7 @@ public class AuthService {
     private final GoogleMailClient googleMailClient;
     private final BCryptPasswordEncoder bCryptPasswordEncoder;
     private final JwtUtils jwtUtils;
+    private final EmailCodeRepository emailCodeRepository;
     private final RefreshTokenRepository refreshTokenRepository;
     private final GroupUserRepository groupUserRepository;
 
@@ -66,8 +73,32 @@ public UserSimpleResponse joinProcess(UserDto userDto) {
     }
 
     public void send(String email) {
-        // TODO. Redis 적용 후 코드 발급 구현 필요
-        googleMailClient.sendMail(email, "hello", "world");
+        String code = getCode();
+        emailCodeRepository.save(EmailCode.builder().email(email).code(code).build());
+        String mailSubject = "[\uD83D\uDC36 멍하냥] 이메일 인증 코드입니다.";
+        String mailContent =
+                """
+                <h3>환영해요!</h3>
+                <b>인증코드를 입력하세요</b>
+                <p>%s</p>
+                """
+                        .formatted(code);
+        googleMailClient.sendMail(email, mailSubject, mailContent);
+    }
+
+    private static String getCode() {
+        ThreadLocalRandom random = ThreadLocalRandom.current();
+
+        List<String> authStr = new CopyOnWriteArrayList<>();
+        for (int i = 0; i < 3; i++) {
+            authStr.add(String.valueOf(random.nextInt(10)));
+        }
+        for (int i = 0; i < 3; i++) {
+            authStr.add(String.valueOf((char) (random.nextInt(26) + 65)));
+        }
+
+        Collections.shuffle(authStr);
+        return String.join("", authStr);
     }
 
     public UserSimpleResponse verifyEmail(String email) {

src/main/java/org/ioteatime/meonghanyangserver/clients/google/GoogleMailClient.java

@@ -85,7 +85,7 @@ public void sendMail(String toEmailAddress, String subject, String message) {
             email.addRecipient(
                     javax.mail.Message.RecipientType.TO, new InternetAddress(toEmailAddress));
             email.setSubject(subject);
-            email.setText(message);
+            email.setContent(message, "text/html;charset=utf-8");
 
             // Encode and wrap the MIME message into a gmail message
             ByteArrayOutputStream buffer = new ByteArrayOutputStream();

src/main/java/org/ioteatime/meonghanyangserver/config/RedisConfig.java

@@ -0,0 +1,30 @@
+package org.ioteatime.meonghanyangserver.config;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+import org.springframework.data.redis.connection.RedisStandaloneConfiguration;
+import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
+import org.springframework.data.redis.core.RedisKeyValueAdapter;
+import org.springframework.data.redis.repository.configuration.EnableRedisRepositories;
+
+@Configuration
+@EnableRedisRepositories(
+        enableKeyspaceEvents = RedisKeyValueAdapter.EnableKeyspaceEvents.ON_STARTUP)
+public class RedisConfig {
+    @Value("${spring.data.redis.host}")
+    private String host;
+
+    @Value("${spring.data.redis.password}")
+    private String password;
+
+    @Bean
+    public RedisConnectionFactory redisConnectionFactory() {
+        RedisStandaloneConfiguration redisConfiguration = new RedisStandaloneConfiguration();
+        redisConfiguration.setHostName(host);
+        redisConfiguration.setPort(6379);
+        redisConfiguration.setPassword(password);
+        return new LettuceConnectionFactory(redisConfiguration);
+    }
+}

src/main/java/org/ioteatime/meonghanyangserver/redis/EmailCode.java

@@ -0,0 +1,18 @@
+package org.ioteatime.meonghanyangserver.redis;
+
+import lombok.*;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.redis.core.RedisHash;
+import org.springframework.data.redis.core.index.Indexed;
+
+@Getter
+@Builder
+@AllArgsConstructor
+@RedisHash(value = "emailCode", timeToLive = 60 * 3)
+public class EmailCode {
+    @Id private Long id;
+
+    @Indexed private String email;
+
+    private String code;
+}

src/main/java/org/ioteatime/meonghanyangserver/redis/EmailCodeRepository.java

@@ -0,0 +1,8 @@
+package org.ioteatime.meonghanyangserver.redis;
+
+import java.util.Optional;
+import org.springframework.data.repository.CrudRepository;
+
+public interface EmailCodeRepository extends CrudRepository<EmailCode, String> {
+    Optional<EmailCode> findByEmail(String email);
+}