export async function callCAPI()

in lib/capi/src/lib/capi.ts [26:83]
56 lines of code
15 McCabe index (conditional complexity)

export async function callCAPI(capiUrl: string): Promise<PollingResult> {
	const response = await fetch(capiUrl);
	const contentBuffer = await response.arrayBuffer();

	const contentBody =
		response.status === 200
			? deserializeItemResponse(Buffer.from(contentBuffer))
			: null; //this will throw if the content is invalid

	switch (response.status) {
		case 200: //we got the content :D.
			if (contentBody?.content) {
				return {
					action: PollingAction.CONTENT_EXISTS,
					content: contentBody.content,
				};
			} else {
				throw new Error('Found content, but result object was blank?!');
			}
		case 404: //content does not exist.
			console.log(`Nothing found for ${capiUrl}`);
			return {
				action: PollingAction.CONTENT_MISSING,
			};
		case 410: //content has gone. Hmmm. Is that what we want??
			console.log(`Content for ${capiUrl} has GONE in CAPI`);
			return {
				action: PollingAction.CONTENT_GONE,
			};
		case 429: //we hit our rate limit
			console.log(`Hit our rate limit for CAPI, retrying in the future`);
			return {
				action: PollingAction.RATE_LIMITED,
			};
		case 500: //concierge not happy. Re-post the incoming message, we need to keep looking.
		case 502:
		case 503:
		case 504:
			console.log(
				`WARNING CAPI returned ${response.status} indicating a remote fault. We will keep trying`,
			);
			return {
				action: PollingAction.CONCIERGE_UNHAPPY,
			};
		case 400: //we screwed up the request. This is a bug. DLQ the message and show an error.
			console.error(
				`CAPI returned ${response.status} indicating we sent an invalid request. Please fix the bug!`,
			);
			return {
				action: PollingAction.INTERNAL_BUG,
			};
		default: //whut?!
			console.error(`CAPI returned an unexpected response ${response.status}`);
			return {
				action: PollingAction.UNEXPECTED_RESPONSE,
			};
	}
}