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import { isAbsolute } from 'node:path';
import type { Storage } from 'unstorage';
import type { ErrorHandler, FontFetcher } from '../definitions.js';
import { cache } from '../utils.js';
export function createCachedFontFetcher({
storage,
errorHandler,
fetch,
readFile,
}: {
storage: Storage;
errorHandler: ErrorHandler;
fetch: (url: string, init?: RequestInit) => Promise<Response>;
readFile: (url: string) => Promise<Buffer>;
}): FontFetcher {
return {
async fetch({ hash, url, init }) {
return await cache(storage, hash, async () => {
try {
if (isAbsolute(url)) {
return await readFile(url);
}
const response = await fetch(url, init ?? undefined);
if (!response.ok) {
throw new Error(`Response was not successful, received status code ${response.status}`);
}
return Buffer.from(await response.arrayBuffer());
} catch (cause) {
throw errorHandler.handle({
type: 'cannot-fetch-font-file',
data: { url },
cause,
});
}
});
},
};
}
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