goldenChat base source add

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

@@ -0,0 +1,63 @@
+package com.goldenchart.controller;
+
+import com.goldenchart.dto.StrategyDto;
+import com.goldenchart.service.StrategyService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+/**
+ * 투자전략 CRUD REST API.
+ *
+ * <p>헤더:
+ * <ul>
+ *   <li>X-Device-Id — 비회원 기기 식별자 (필수)</li>
+ *   <li>X-User-Id   — 회원 ID (선택)</li>
+ * </ul>
+ */
+@RestController
+@RequestMapping("/strategies")
+@RequiredArgsConstructor
+public class StrategyController {
+
+    private final StrategyService service;
+
+    /** 전략 목록 조회 */
+    @GetMapping
+    public ResponseEntity<List<StrategyDto>> list(
+            @RequestHeader(value = "X-User-Id",   required = false) String userIdHeader,
+            @RequestHeader(value = "X-Device-Id", required = false) String deviceId) {
+        return ResponseEntity.ok(service.list(parseUserId(userIdHeader), deviceId));
+    }
+
+    /** 단일 전략 조회 */
+    @GetMapping("/{id}")
+    public ResponseEntity<StrategyDto> get(@PathVariable Long id) {
+        return service.findById(id)
+                .map(ResponseEntity::ok)
+                .orElse(ResponseEntity.notFound().build());
+    }
+
+    /** 전략 저장 (id 없으면 생성, 있으면 수정) */
+    @PostMapping
+    public ResponseEntity<StrategyDto> save(
+            @RequestBody StrategyDto dto,
+            @RequestHeader(value = "X-User-Id",   required = false) String userIdHeader,
+            @RequestHeader(value = "X-Device-Id", required = false) String deviceId) {
+        return ResponseEntity.ok(service.save(dto, parseUserId(userIdHeader), deviceId));
+    }
+
+    /** 전략 삭제 */
+    @DeleteMapping("/{id}")
+    public ResponseEntity<Void> delete(@PathVariable Long id) {
+        service.delete(id);
+        return ResponseEntity.noContent().build();
+    }
+
+    private Long parseUserId(String header) {
+        if (header == null || header.isBlank()) return null;
+        try { return Long.parseLong(header); } catch (NumberFormatException e) { return null; }
+    }
+}