#3 feat: 로그인 API

src/main/java/com/s1350/sooljangmacha/global/dto/BaseResponse.java

@@ -30,7 +30,7 @@ public static <T> BaseResponse<T> OK(@Nullable T data) {
     }
 
     public static BaseResponse error(BaseResponseCode baseResponseCode, String message) {
-        return new BaseResponse<>(baseResponseCode.getStatus().value(), baseResponseCode.getCode(), baseResponseCode.getMessage());
+        return new BaseResponse<>(baseResponseCode.getStatus().value(), baseResponseCode.getCode(), message);
     }
 
 }

src/main/java/com/s1350/sooljangmacha/global/utils/JwtUtil.java

@@ -9,6 +9,7 @@
 
 import java.nio.charset.StandardCharsets;
 import java.security.Key;
+import java.util.Date;
 
 import static com.s1350.sooljangmacha.global.Constants.BEARER_PREFIX;
 import static com.s1350.sooljangmacha.global.Constants.CLAIM_NAME;
@@ -19,6 +20,8 @@ public class JwtUtil {
     @Value("${jwt.secret}")
     private String jwtSecret;
 
+    private final long accessTokenExpiryTime = 1000L * 60 * 60 * 24 * 14; // 2주
+
     public static String replaceBearer(String header) {
         return header.substring(BEARER_PREFIX.length());
     }
@@ -57,4 +60,25 @@ private Claims getBody(String token) {
             return e.getClaims();
         }
     }
+
+    public String issuedAccessToken(Long userId) {
+        return issuedToken("access_token", accessTokenExpiryTime, String.valueOf(userId));
+    }
+
+    public String issuedToken(String tokenName, long expiryTime, String userId) {
+        final Date now = new Date();
+
+        final Claims claims = Jwts.claims()
+                .setSubject(tokenName)
+                .setIssuedAt(now)
+                .setExpiration(new Date(now.getTime() + expiryTime));
+
+        claims.put(CLAIM_NAME, userId);
+
+        return Jwts.builder()
+                .setHeaderParam(Header.TYPE, Header.JWT_TYPE)
+                .setClaims(claims)
+                .signWith(getSigningKey())
+                .compact();
+    }
 }

src/main/java/com/s1350/sooljangmacha/user/controller/UserController.java

@@ -1,10 +1,23 @@
 package com.s1350.sooljangmacha.user.controller;
 
+import com.s1350.sooljangmacha.global.dto.BaseResponse;
+import com.s1350.sooljangmacha.user.dto.request.LoginReq;
+import com.s1350.sooljangmacha.user.dto.response.LoginRes;
 import com.s1350.sooljangmacha.user.service.UserService;
 import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.responses.ApiResponses;
+import io.swagger.v3.oas.annotations.security.SecurityRequirement;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import lombok.RequiredArgsConstructor;
-import org.springframework.web.bind.annotation.*;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import javax.validation.Valid;
 
 @Tag(name = "users", description = "유저 API")
 @RestController
@@ -13,8 +26,17 @@
 public class UserController {
     private final UserService userService;
 
-//    @Operation(summary = "로그인", description = "")
-//    @PostMapping("/login")
+    @Operation(summary = "로그인", description = "로그인을 한다.")
+    @ApiResponses(value = {
+            @ApiResponse(responseCode = "200", description = "(S0001)요청에 성공했습니다."),
+            @ApiResponse(responseCode = "400", description = "(E0001)잘못된 요청입니다. <br> (E0001)이메일을 입력해 주세요. <br> (E0001)provider를 입력해 주세요. <br> (E0001)올바른 이메일 형식으로 입력해 주세요. <br> (E0001)잘못된 provider 값 입니다. <br>", content = @Content(schema = @Schema(implementation = BaseResponse.class))),
+            @ApiResponse(responseCode = "404", description = "(U0001)존재하지 않는 유저입니다.", content = @Content(schema = @Schema(implementation = BaseResponse.class))),
+    })
+    @PostMapping("/login")
+    public BaseResponse<LoginRes> login(@RequestBody @Valid LoginReq loginReq) {
+        return BaseResponse.OK(userService.login(loginReq));
+    }
+
 
 //    @Operation(summary = "로그아웃", description = "")
 //    @PostMapping("/logout")

src/main/java/com/s1350/sooljangmacha/user/dto/request/LoginReq.java

@@ -0,0 +1,26 @@
+package com.s1350.sooljangmacha.user.dto.request;
+
+import com.s1350.sooljangmacha.global.resolver.EnumValid;
+import com.s1350.sooljangmacha.user.entity.Provider;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import javax.validation.constraints.Email;
+import javax.validation.constraints.NotBlank;
+
+@Data
+@NoArgsConstructor
+public class LoginReq {
+
+    @Schema(type = "String", description = "유저 이메일", example = "ex@naver.com", required = true)
+    @NotBlank(message = "이메일을 입력해 주세요.")
+    @Email(message = "올바른 이메일 형식으로 입력해 주세요.")
+    private String email;
+
+    @Schema(type = "String", description = "유저 로그인 종류", example = "KAKAO", allowableValues = {"KAKAO", "APPLE"}, required = true)
+    @NotBlank(message = "provider를 입력해 주세요.")
+    @EnumValid(enumClass = Provider.class, ignoreCase = true, message = "잘못된 provider 값 입니다.")
+    private String provider;
+
+}

src/main/java/com/s1350/sooljangmacha/user/dto/response/LoginRes.java

@@ -0,0 +1,23 @@
+package com.s1350.sooljangmacha.user.dto.response;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class LoginRes {
+
+    @Schema(type = "String", description = "액세스 토큰")
+    private String accessToken;
+
+    public static LoginRes toEntity(String accessToken) {
+        return LoginRes.builder()
+                .accessToken(accessToken)
+                .build();
+    }
+}

src/main/java/com/s1350/sooljangmacha/user/entity/User.java

@@ -25,6 +25,10 @@ public class User extends BaseEntity {
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
 
+    @NotNull
+    @Size(max = 255)
+    private String email;
+
     @NotNull
     @Size(max = 30)
     private String nickname;

src/main/java/com/s1350/sooljangmacha/user/repository/UserRepository.java

@@ -1,10 +1,13 @@
 package com.s1350.sooljangmacha.user.repository;
 
+import com.s1350.sooljangmacha.user.entity.Provider;
 import com.s1350.sooljangmacha.user.entity.User;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 import java.util.Optional;
 
 public interface UserRepository extends JpaRepository<User, Long> {
     Optional<User> findByIdAndIsEnable(Long id, boolean isEnable);
+
+    Optional<User> findByEmailAndProviderAndIsEnable(String email, Provider provider, boolean isEnable);
 }

src/main/java/com/s1350/sooljangmacha/user/service/UserService.java

@@ -1,16 +1,30 @@
 package com.s1350.sooljangmacha.user.service;
 
 
+import com.s1350.sooljangmacha.global.exception.BaseException;
+import com.s1350.sooljangmacha.global.exception.BaseResponseCode;
+import com.s1350.sooljangmacha.global.utils.JwtUtil;
+import com.s1350.sooljangmacha.user.dto.request.LoginReq;
+import com.s1350.sooljangmacha.user.dto.response.LoginRes;
+import com.s1350.sooljangmacha.user.entity.Provider;
+import com.s1350.sooljangmacha.user.entity.User;
 import com.s1350.sooljangmacha.user.repository.UserRepository;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 
+
 @Service
 @RequiredArgsConstructor
 public class UserService {
-    private UserRepository userRepository;
+    private final UserRepository userRepository;
+    private final JwtUtil jwtUtil;
 
     // 로그인
+    public LoginRes login(LoginReq request) {
+        User user = userRepository.findByEmailAndProviderAndIsEnable(request.getEmail(), Provider.valueOf(request.getProvider()), true)
+                .orElseThrow(() -> new BaseException(BaseResponseCode.USER_NOT_FOUND));
+        return LoginRes.toEntity(jwtUtil.issuedAccessToken(user.getId()));
+    }
 
     // 로그아웃