전체적인 리팩토링

app/api/kis/domestic/market-hub/route.ts

@@ -0,0 +1,72 @@
+import { NextResponse } from "next/server";
+import type { DashboardMarketHubResponse } from "@/features/dashboard/types/dashboard.types";
+import { hasKisConfig, normalizeTradingEnv } from "@/lib/kis/config";
+import { getDomesticDashboardMarketHub } from "@/lib/kis/dashboard";
+import { hasKisApiSession } from "@/app/api/kis/_session";
+import {
+  createKisApiErrorResponse,
+  KIS_API_ERROR_CODE,
+  toKisApiErrorMessage,
+} from "@/app/api/kis/_response";
+import { readKisCredentialsFromHeaders } from "@/app/api/kis/domestic/_shared";
+
+/**
+ * @file app/api/kis/domestic/market-hub/route.ts
+ * @description 국내주식 시장 허브(급등/인기/뉴스) 조회 API
+ */
+
+/**
+ * 대시보드 시장 허브 조회 API
+ * @returns 급등주식/인기종목/주요뉴스 목록
+ * @remarks UI 흐름: DashboardContainer -> useDashboardData -> /api/kis/domestic/market-hub -> MarketHubSection 렌더링
+ */
+export async function GET(request: Request) {
+  const hasSession = await hasKisApiSession();
+  if (!hasSession) {
+    return createKisApiErrorResponse({
+      status: 401,
+      code: KIS_API_ERROR_CODE.AUTH_REQUIRED,
+      message: "로그인이 필요합니다.",
+    });
+  }
+
+  const credentials = readKisCredentialsFromHeaders(request.headers);
+  if (!hasKisConfig(credentials)) {
+    return createKisApiErrorResponse({
+      status: 400,
+      code: KIS_API_ERROR_CODE.CREDENTIAL_REQUIRED,
+      message: "KIS API 키 설정이 필요합니다.",
+    });
+  }
+
+  try {
+    const result = await getDomesticDashboardMarketHub(credentials);
+    const response: DashboardMarketHubResponse = {
+      source: "kis",
+      tradingEnv: normalizeTradingEnv(credentials.tradingEnv),
+      gainers: result.gainers,
+      losers: result.losers,
+      popularByVolume: result.popularByVolume,
+      popularByValue: result.popularByValue,
+      news: result.news,
+      pulse: result.pulse,
+      warnings: result.warnings,
+      fetchedAt: new Date().toISOString(),
+    };
+
+    return NextResponse.json(response, {
+      headers: {
+        "cache-control": "no-store",
+      },
+    });
+  } catch (error) {
+    return createKisApiErrorResponse({
+      status: 500,
+      code: KIS_API_ERROR_CODE.UPSTREAM_FAILURE,
+      message: toKisApiErrorMessage(
+        error,
+        "시장 허브 조회 중 오류가 발생했습니다.",
+      ),
+    });
+  }
+}