모의투자 로직 변경

backend/src/main/java/com/goldenchart/controller/TradingControllerSupport.java

@@ -0,0 +1,33 @@
+package com.goldenchart.controller;
+
+import com.goldenchart.trading.TradingAccess;
+
+import java.util.Map;
+
+/** 매매·모의·전략 API — 정식 로그인(userId) 필수 */
+public final class TradingControllerSupport {
+
+    private TradingControllerSupport() {}
+
+    public static long requireRegisteredUser(Map<String, String> headers) {
+        String raw = headers.get("x-user-id");
+        if (raw == null || raw.isBlank()) {
+            throw new com.goldenchart.trading.TradingAccessDeniedException();
+        }
+        try {
+            return TradingAccess.requireUserId(Long.parseLong(raw.trim()));
+        } catch (NumberFormatException e) {
+            throw new com.goldenchart.trading.TradingAccessDeniedException();
+        }
+    }
+
+    public static Long parseUserId(Map<String, String> headers) {
+        String raw = headers.get("x-user-id");
+        if (raw == null || raw.isBlank()) return null;
+        try {
+            return Long.parseLong(raw.trim());
+        } catch (NumberFormatException e) {
+            return null;
+        }
+    }
+}