feat(project): init

app/api/admin/settings/route.ts

@@ -0,0 +1,34 @@
+import { NextResponse, type NextRequest } from "next/server";
+import { requireApiAdmin } from "@/lib/api-auth";
+import { setDefaultMonthlyQuota } from "@/lib/db";
+import { jsonError, normalizeError } from "@/lib/http";
+
+export const runtime = "nodejs";
+
+export async function PUT(request: NextRequest) {
+  try {
+    requireApiAdmin(request);
+
+    const body = (await request.json()) as {
+      defaultMonthlyQuota?: unknown;
+    };
+    const numericValue = Number.parseInt(
+      String(body?.defaultMonthlyQuota ?? ""),
+      10,
+    );
+
+    if (!Number.isFinite(numericValue) || numericValue < 0) {
+      return jsonError("默认额度必须是大于等于 0 的整数。", 400);
+    }
+
+    const settings = setDefaultMonthlyQuota(numericValue);
+
+    return NextResponse.json({
+      ok: true,
+      settings,
+    });
+  } catch (error) {
+    const normalizedError = normalizeError(error, "保存默认额度失败。");
+    return jsonError(normalizedError.message, normalizedError.statusCode);
+  }
+}