adding /api/user/getEmailFromId api

Author: Ashish Mishra

README.md

@@ -2,6 +2,8 @@
 
 This project demonstrates how to containerize a **Spring Boot application** with **MySQL** and **Adminer** using **Docker Compose**.
 
+> Swagger Url: http://localhost:8080/swagger-ui/index.html#/
+
 ## 📌 Project Structure
 
 ```

src/main/java/com/beneite/SpringWithDocker/controller/UserController.java

@@ -1,6 +1,8 @@
 package com.beneite.SpringWithDocker.controller;
 
-import com.beneite.SpringWithDocker.dto.UserDto;
+import com.beneite.SpringWithDocker.dto.requestDto.UserDto;
+import com.beneite.SpringWithDocker.dto.requestDto.UserIdRequestDto;
+import com.beneite.SpringWithDocker.dto.responseDto.UserIdResponseDto;
 import com.beneite.SpringWithDocker.service.implementation.UserServiceImpl;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
@@ -107,4 +109,18 @@ public ResponseEntity<String> deleteUserApi(@PathVariable("id") Long userId){
         return new ResponseEntity<>("User with id:"+userId+" Deleted", HttpStatus.OK);
     }
 
+    @Operation(
+            summary = "Get User's Email from User id",
+            description = "this Get User's Email from User id"
+    )
+    @ApiResponse(
+            responseCode = "200",
+            description = "200-success, display All email id of the user"
+    )
+    @PostMapping("getEmailFromId")
+    public ResponseEntity<UserIdResponseDto> getUserEmailFromUserId(@Valid @RequestBody UserIdRequestDto userIdRequestDto){
+        UserIdResponseDto userIdResponseDto = userServiceImpl.getUserEmailFromIdImplementation(userIdRequestDto);
+        return new ResponseEntity<>(userIdResponseDto, HttpStatus.OK);
+    }
+
 }

…eneite/SpringWithDocker/dto/UserDto.java …ngWithDocker/dto/requestDto/UserDto.javasrc/main/java/com/beneite/SpringWithDocker/dto/UserDto.java renamed to src/main/java/com/beneite/SpringWithDocker/dto/requestDto/UserDto.java src/main/java/com/beneite/SpringWithDocker/dto/UserDto.java renamed to src/main/java/com/beneite/SpringWithDocker/dto/requestDto/UserDto.java

@@ -1,4 +1,4 @@
-package com.beneite.SpringWithDocker.dto;
+package com.beneite.SpringWithDocker.dto.requestDto;
 
 import io.swagger.v3.oas.annotations.media.Schema;
 import jakarta.validation.constraints.Email;

src/main/java/com/beneite/SpringWithDocker/dto/requestDto/UserIdRequestDto.java

@@ -0,0 +1,27 @@
+package com.beneite.SpringWithDocker.dto.requestDto;
+
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import jakarta.validation.constraints.NotEmpty;
+import jakarta.validation.constraints.NotNull;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Schema(
+        description = "User ID request DTO model information"
+)
+@Getter
+@Setter
+@NoArgsConstructor
+@AllArgsConstructor
+public class UserIdRequestDto {
+
+    @NotNull(message = "User ID cannot be null")
+    @Schema(
+            description = "User ID"
+    )
+    private Long userId;
+
+}

src/main/java/com/beneite/SpringWithDocker/dto/responseDto/UserIdResponseDto.java

@@ -0,0 +1,23 @@
+package com.beneite.SpringWithDocker.dto.responseDto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Schema(
+        description = "User ID response DTO model information"
+)
+@Getter
+@Setter
+@NoArgsConstructor
+@AllArgsConstructor
+public class UserIdResponseDto {
+
+    @Schema(
+            description = "User Email"
+    )
+    private String email;
+
+}

src/main/java/com/beneite/SpringWithDocker/mapper/AutoUserMapper.java

@@ -1,6 +1,6 @@
 package com.beneite.SpringWithDocker.mapper;
 
-import com.beneite.SpringWithDocker.dto.UserDto;
+import com.beneite.SpringWithDocker.dto.requestDto.UserDto;
 import com.beneite.SpringWithDocker.entity.UserEntity;
 import org.mapstruct.Mapper;
 import org.mapstruct.factory.Mappers;

src/main/java/com/beneite/SpringWithDocker/mapper/UserMapper.java

@@ -1,6 +1,6 @@
 package com.beneite.SpringWithDocker.mapper;
 
-import com.beneite.SpringWithDocker.dto.UserDto;
+import com.beneite.SpringWithDocker.dto.requestDto.UserDto;
 import com.beneite.SpringWithDocker.entity.UserEntity;
 
 public class UserMapper {

src/main/java/com/beneite/SpringWithDocker/service/UserService.java

@@ -1,7 +1,9 @@
 package com.beneite.SpringWithDocker.service;
 
 
-import com.beneite.SpringWithDocker.dto.UserDto;
+import com.beneite.SpringWithDocker.dto.requestDto.UserDto;
+import com.beneite.SpringWithDocker.dto.requestDto.UserIdRequestDto;
+import com.beneite.SpringWithDocker.dto.responseDto.UserIdResponseDto;
 
 import java.util.List;
 
@@ -12,5 +14,6 @@ public interface UserService {
     List<UserDto> getAllUsersImplementation();
     UserDto updateUserImplementation(UserDto userDto);
     void deleteUserImplementation(Long userId);
+    UserIdResponseDto getUserEmailFromIdImplementation(UserIdRequestDto userIdRequestDto);
 
 }

src/main/java/com/beneite/SpringWithDocker/service/implementation/UserServiceImpl.java

@@ -1,7 +1,9 @@
 package com.beneite.SpringWithDocker.service.implementation;
 
 
-import com.beneite.SpringWithDocker.dto.UserDto;
+import com.beneite.SpringWithDocker.dto.requestDto.UserDto;
+import com.beneite.SpringWithDocker.dto.requestDto.UserIdRequestDto;
+import com.beneite.SpringWithDocker.dto.responseDto.UserIdResponseDto;
 import com.beneite.SpringWithDocker.entity.UserEntity;
 import com.beneite.SpringWithDocker.exception.DuplicateEmailException;
 import com.beneite.SpringWithDocker.exception.ResourceNotFoundException;
@@ -79,5 +81,15 @@ public void deleteUserImplementation(Long userId) {
         userRepository.deleteById(userId);
     }
 
+    @Override
+    public UserIdResponseDto getUserEmailFromIdImplementation(UserIdRequestDto userIdRequestDto) {
+        String email = userRepository.findById(userIdRequestDto.getUserId())
+                .map(user -> user.getEmail())
+                .orElseThrow(
+                () -> new ResourceNotFoundException("User", "id", userIdRequestDto.getUserId())
+        );
+        return new UserIdResponseDto(email);
+    }
+
 
 }

src/test/java/com/beneite/SpringWithDocker/controllerTest/UserControllerTest.java

@@ -1,7 +1,7 @@
 package com.beneite.SpringWithDocker.controllerTest;
 
 import com.beneite.SpringWithDocker.controller.UserController;
-import com.beneite.SpringWithDocker.dto.UserDto;
+import com.beneite.SpringWithDocker.dto.requestDto.UserDto;
 import com.beneite.SpringWithDocker.service.implementation.UserServiceImpl;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;