From b2aa565a379d35557436a4acd428e3a5d746ec26 Mon Sep 17 00:00:00 2001
From: Yerin Lee <91695537+lxxyxin@users.noreply.github.com>
Date: Wed, 15 Jan 2025 01:54:12 +0900
Subject: [PATCH] =?UTF-8?q?feat=20:=20UserId=20=EC=BB=A4=EC=8A=A4=ED=85=80?=
 =?UTF-8?q?=20=EC=96=B4=EB=85=B8=ED=85=8C=EC=9D=B4=EC=85=98=20=EB=B0=8F=20?=
 =?UTF-8?q?Resolver=EA=B5=AC=ED=98=84=20-=20#10?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../cakey/common/resolver/user/UserId.java    | 11 ++++++++
 .../common/resolver/user/UserIdResolver.java  | 28 +++++++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 cakey-api/src/main/java/com/cakey/common/resolver/user/UserId.java
 create mode 100644 cakey-api/src/main/java/com/cakey/common/resolver/user/UserIdResolver.java

diff --git a/cakey-api/src/main/java/com/cakey/common/resolver/user/UserId.java b/cakey-api/src/main/java/com/cakey/common/resolver/user/UserId.java
new file mode 100644
index 0000000..e04a367
--- /dev/null
+++ b/cakey-api/src/main/java/com/cakey/common/resolver/user/UserId.java
@@ -0,0 +1,11 @@
+package com.cakey.common.resolver.user;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target(ElementType.PARAMETER)
+@Retention(RetentionPolicy.RUNTIME)
+public @interface UserId {
+}
diff --git a/cakey-api/src/main/java/com/cakey/common/resolver/user/UserIdResolver.java b/cakey-api/src/main/java/com/cakey/common/resolver/user/UserIdResolver.java
new file mode 100644
index 0000000..77198c0
--- /dev/null
+++ b/cakey-api/src/main/java/com/cakey/common/resolver/user/UserIdResolver.java
@@ -0,0 +1,28 @@
+package com.cakey.common.resolver.user;
+
+import org.springframework.core.MethodParameter;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Component;
+import org.springframework.web.bind.support.WebDataBinderFactory;
+import org.springframework.web.context.request.NativeWebRequest;
+import org.springframework.web.method.support.HandlerMethodArgumentResolver;
+import org.springframework.web.method.support.ModelAndViewContainer;
+
+@Component
+public class UserIdResolver implements HandlerMethodArgumentResolver {
+
+    @Override
+    public boolean supportsParameter(MethodParameter parameter) {
+        return parameter.getParameterType().equals(Long.class)
+                && parameter.hasParameterAnnotation(UserId.class);
+
+    }
+
+    @Override
+    public Object resolveArgument(MethodParameter parameter,
+                                  ModelAndViewContainer mavContainer,
+                                  NativeWebRequest webRequest,
+                                  WebDataBinderFactory binderFactory) {
+        return SecurityContextHolder.getContext().getAuthentication().getPrincipal();
+    }
+}