perf(api): compile the phrase blocklist into one matcher (#2164)

fluxer_api/src/api/utils/RequestJsonBody.ts

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+import type {HonoRequest} from 'hono';
+import {parseJsonPreservingLargeIntegers} from './LosslessJsonParser';
+
+interface RequestJsonBody {
+	parsed: boolean;
+	value: unknown;
+}
+
+const bodyCache = new WeakMap<Request, RequestJsonBody>();
+
+export async function readRequestJsonBody(req: HonoRequest): Promise<RequestJsonBody> {
+	const raw = req.raw;
+	const cached = bodyCache.get(raw);
+	if (cached) return cached;
+	let body: RequestJsonBody;
+	try {
+		const text = await req.text();
+		body = {parsed: true, value: text.trim().length === 0 ? {} : parseJsonPreservingLargeIntegers(text)};
+	} catch {
+		body = {parsed: false, value: {}};
+	}
+	bodyCache.set(raw, body);
+	return body;
+}