feat: 유저 탈퇴 API 구현 (#182)

src/main/java/com/soongsil/CoffeeChat/controller/UserController.java

@@ -7,14 +7,7 @@
 
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.Authentication;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PatchMapping;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.PutMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
 
 import com.soongsil.CoffeeChat.controller.handler.ApiResponseGenerator;
 import com.soongsil.CoffeeChat.dto.MenteeJoinRequestDto;
@@ -176,4 +169,16 @@ public ResponseEntity<ApiResponseGenerator<UserGetDto>> getUserInfo(Authenticati
 		);
 	}
 
+	@DeleteMapping()
+	@Operation(summary = "탈퇴하기")
+	@ApiResponse(responseCode = "200", description = "성공!")
+	public ResponseEntity<ApiResponseGenerator<Void>> deleteUser(Authentication authentication) throws Exception {
+		userService.deleteUser(getUserNameByAuthentication(authentication));
+		return ResponseEntity.ok().body(
+				ApiResponseGenerator.onSuccessOK(
+						null
+				)
+		);
+	}
+
 }

src/main/java/com/soongsil/CoffeeChat/service/UserService.java

@@ -128,4 +128,8 @@ public UserGetDto findUserInfo(String username) {
 		//return UserGetUpdateDto.toDto(user);
 	}
 
+	public void deleteUser(String username) {
+		User user = findUserByUsername(username);
+		userRepository.delete(user);
+	}
 }