Move app to apps/web-react in pnpm workspace layout

apps/web-react/app/modules/twitch/fetch.ts

@@ -0,0 +1,55 @@
+import { logger } from "~/utils/logger";
+import { getToken, purgeCachedToken } from "./token";
+import { getTwitchEnvVars } from "./utils.server";
+
+const MAX_RATE_LIMIT_RETRIES = 5;
+const MAX_RATE_LIMIT_WAIT_MS = 60_000;
+
+export async function twitchFetch(
+	url: string,
+	{ isRetry = false, rateLimitRetries = 0 } = {},
+): Promise<Response> {
+	const { TWITCH_CLIENT_ID } = getTwitchEnvVars();
+	const token = await getToken();
+
+	const res = await fetch(url, {
+		headers: [
+			["Authorization", `Bearer ${token}`],
+			["Client-Id", TWITCH_CLIENT_ID],
+		],
+	});
+
+	if (res.status === 401 && !isRetry) {
+		purgeCachedToken();
+		return twitchFetch(url, { isRetry: true });
+	}
+
+	if (res.status === 429) {
+		if (rateLimitRetries >= MAX_RATE_LIMIT_RETRIES) {
+			throw new Error(
+				`Twitch API rate limited after ${MAX_RATE_LIMIT_RETRIES} retries`,
+			);
+		}
+
+		const resetHeader = res.headers.get("Ratelimit-Reset");
+		const resetTimestamp = resetHeader ? Number(resetHeader) : 0;
+		const waitMs = Math.max(resetTimestamp * 1000 - Date.now(), 1000);
+
+		if (waitMs > MAX_RATE_LIMIT_WAIT_MS) {
+			throw new Error(
+				`Twitch API rate limit reset too far in the future (${Math.ceil(waitMs / 1000)}s)`,
+			);
+		}
+
+		logger.warn(`Twitch rate limited, waiting ${Math.ceil(waitMs / 1000)}s`);
+		await new Promise((resolve) => setTimeout(resolve, waitMs));
+
+		return twitchFetch(url, { rateLimitRetries: rateLimitRetries + 1 });
+	}
+
+	if (!res.ok) {
+		throw new Error(`Twitch API request failed with status: ${res.status}`);
+	}
+
+	return res;
+}