대시보드 구현

app/api/kis/domestic/balance/route.ts

@@ -0,0 +1,65 @@
+import { NextResponse } from "next/server";
+import type { DashboardBalanceResponse } from "@/features/dashboard/types/dashboard.types";
+import { hasKisConfig, normalizeTradingEnv } from "@/lib/kis/config";
+import { getDomesticDashboardBalance } from "@/lib/kis/dashboard";
+import {
+  readKisAccountParts,
+  readKisCredentialsFromHeaders,
+} from "@/app/api/kis/domestic/_shared";
+
+/**
+ * @file app/api/kis/domestic/balance/route.ts
+ * @description 국내주식 계좌 잔고/보유종목 조회 API
+ */
+
+/**
+ * 대시보드 잔고 조회 API
+ * @returns 총자산/손익/보유종목 목록
+ * @see features/dashboard/hooks/use-dashboard-data.ts 대시보드 초기 로드/새로고침에서 호출합니다.
+ */
+export async function GET(request: Request) {
+  const credentials = readKisCredentialsFromHeaders(request.headers);
+
+  if (!hasKisConfig(credentials)) {
+    return NextResponse.json(
+      {
+        error: "KIS API 키 설정이 필요합니다.",
+      },
+      { status: 400 },
+    );
+  }
+
+  const account = readKisAccountParts(request.headers);
+  if (!account) {
+    return NextResponse.json(
+      {
+        error:
+          "계좌번호가 필요합니다. 설정에서 계좌번호(예: 12345678-01)를 입력해 주세요.",
+      },
+      { status: 400 },
+    );
+  }
+
+  try {
+    const result = await getDomesticDashboardBalance(account, credentials);
+    const response: DashboardBalanceResponse = {
+      source: "kis",
+      tradingEnv: normalizeTradingEnv(credentials.tradingEnv),
+      summary: result.summary,
+      holdings: result.holdings,
+      fetchedAt: new Date().toISOString(),
+    };
+
+    return NextResponse.json(response, {
+      headers: {
+        "cache-control": "no-store",
+      },
+    });
+  } catch (error) {
+    const message =
+      error instanceof Error
+        ? error.message
+        : "잔고 조회 중 오류가 발생했습니다.";
+    return NextResponse.json({ error: message }, { status: 500 });
+  }
+}