[FEATURE] E4-S10 사용자에게 4자리의 코드번호 메일로 전달 #285

backend/build.gradle

@@ -39,6 +39,7 @@ dependencies {
 	testImplementation 'org.springframework.security:spring-security-test'
 	implementation 'com.sun.xml.bind:jaxb1-impl:2.2.5.1'
 	annotationProcessor "org.springframework.boot:spring-boot-configuration-processor"
+	implementation 'org.springframework.boot:spring-boot-starter-mail'
 }
 
 test {

backend/src/main/java/com/infp/ciat/config/cors/webconfigDev.java

@@ -17,7 +17,9 @@ public void addCorsMappings(CorsRegistry registry) {
                         "https://vuelogin.choicloudlab.com",
                         "http://localhost:8070",
                         "https://ciat-dev.choicloudlab.com",
-                        "https://ciat.choicloudlab.com"
+                        "https://ciat.choicloudlab.com",
+                        "https://smtp.naver.com"
+
                 )
                 .allowedMethods("*");
     }

backend/src/main/java/com/infp/ciat/config/cors/webconfigProd.java

@@ -17,7 +17,8 @@ public void addCorsMappings(CorsRegistry registry) {
                         "http://localhost:8070",
                         "https://ciat-frontend.choicloudlab.com",
                         "https://ciat-dev.choicloudlab.com",
-                        "https://ciat.choicloudlab.com"
+                        "https://ciat.choicloudlab.com",
+                        "https://smtp.naver.com"
                 )
                 .allowedMethods("*");
     }

backend/src/main/java/com/infp/ciat/user/controller/AccountController.java

@@ -1,18 +1,26 @@
 package com.infp.ciat.user.controller;
 
 import com.infp.ciat.config.auth.PrincipalDetails;
+import com.infp.ciat.user.controller.dto.request.ResetPasswordRequestDTO;
 import com.infp.ciat.user.controller.dto.request.SignupRequestDTO;
 import com.infp.ciat.user.controller.dto.response.LoginSuccessResponse;
+import com.infp.ciat.user.controller.dto.response.ResetPasswordResponse;
 import com.infp.ciat.user.controller.dto.response.SignUpResponse;
 import com.infp.ciat.user.service.AccountService;
 import lombok.RequiredArgsConstructor;
+import lombok.SneakyThrows;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.mail.javamail.MimeMessageHelper;
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
 import org.springframework.web.bind.annotation.*;
 
+import javax.mail.internet.MimeMessage;
 import javax.validation.Valid;
+import java.util.Random;
 
 @RestController
 @RequiredArgsConstructor
@@ -21,6 +29,11 @@
 public class AccountController {
     private final AccountService accountService;
 
+    private final JavaMailSender javaMailSender;
+
+    @Value("${spring.mail.username}")
+    private String fromMail;
+
     @PostMapping("/signup")
     public ResponseEntity<SignUpResponse> signUp(@Valid @RequestBody SignupRequestDTO requestDTO) {
 
@@ -39,4 +52,34 @@ public ResponseEntity<SignUpResponse> signUp(@Valid @RequestBody SignupRequestDT
     public ResponseEntity<LoginSuccessResponse> login_success(@AuthenticationPrincipal PrincipalDetails user) {
         return new ResponseEntity<>(new LoginSuccessResponse(user.getUsername()), HttpStatus.OK);
     }
+
+    @SneakyThrows
+    @PostMapping("/resetPassword")
+    public ResponseEntity<ResetPasswordResponse> resetPassword(@RequestBody ResetPasswordRequestDTO requestDTO)  {
+
+        String toMail = requestDTO.getEmail();
+
+        MimeMessage mimeMessage = javaMailSender.createMimeMessage();
+        MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage, true, "UTF-8");
+        mimeMessageHelper.setFrom(fromMail);
+        mimeMessageHelper.setTo(toMail);
+        mimeMessageHelper.setSubject("[ciat] 임시 비밀번호 안내");
+
+        Random random = new Random();
+        String originCode = "";
+        for (int i = 0; i < 4; i++) {
+            originCode += random.nextInt(10);
+        }
+
+        StringBuilder body = new StringBuilder();
+
+        body.append("3시간 안에 코드를 입력해주세요.");
+        body.append("코드: " + originCode);
+
+        mimeMessageHelper.setText(body.toString(), true);
+        javaMailSender.send(mimeMessage);
+
+        return new ResponseEntity<>(new ResetPasswordResponse(toMail, originCode), HttpStatus.OK);
+    }
+
 }

backend/src/main/java/com/infp/ciat/user/controller/dto/request/ResetPasswordRequestDTO.java

@@ -0,0 +1,17 @@
+package com.infp.ciat.user.controller.dto.request;
+
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor
+@Getter
+public class ResetPasswordRequestDTO {
+
+    private String email;
+
+    @Builder
+    public ResetPasswordRequestDTO(String email) {
+        this.email = email;
+    }
+}

backend/src/main/java/com/infp/ciat/user/controller/dto/response/ResetPasswordResponse.java

@@ -0,0 +1,20 @@
+package com.infp.ciat.user.controller.dto.response;
+
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor
+@Getter
+public class ResetPasswordResponse {
+
+    private String email;
+
+    private String originCode;
+
+    @Builder
+    public ResetPasswordResponse(String email, String originCode) {
+        this.email = email;
+        this.originCode = originCode;
+    }
+}