가상투자 메뉴 기능 구현

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

@@ -0,0 +1,35 @@
+package com.goldenchart.controller;
+
+import com.goldenchart.dto.LiveConditionStatusDto;
+import com.goldenchart.service.LiveConditionStatusService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+/**
+ * 가상투자 — 실시간 조건 충족 현황 API.
+ *
+ * GET /api/strategy/live-conditions?market=KRW-BTC&strategyId=1
+ */
+@RestController
+@RequestMapping("/strategy/live-conditions")
+@RequiredArgsConstructor
+public class LiveConditionController {
+
+    private final LiveConditionStatusService service;
+
+    @GetMapping
+    public ResponseEntity<LiveConditionStatusDto> get(
+            @RequestParam String market,
+            @RequestParam long strategyId,
+            @RequestHeader(value = "X-User-Id",   required = false) String userIdHeader,
+            @RequestHeader(value = "X-Device-Id", required = false) String deviceId) {
+
+        return ResponseEntity.ok(service.evaluate(parseUserId(userIdHeader), deviceId, market, strategyId));
+    }
+
+    private Long parseUserId(String header) {
+        if (header == null || header.isBlank()) return null;
+        try { return Long.parseLong(header); } catch (NumberFormatException e) { return null; }
+    }
+}