51 lines
1.3 KiB
TypeScript
51 lines
1.3 KiB
TypeScript
import probeImageSize from "probe-image-size";
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import { Mutex, withTimeout } from "async-mutex";
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import { FILE_TYPE_BROWSERSAFE } from "@/const.js";
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import Logger from "@/services/logger.js";
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import { Cache } from "./cache.js";
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export type Size = {
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width: number;
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height: number;
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};
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const cache = new Cache<boolean>(1000 * 60 * 10); // once every 10 minutes for the same url
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const mutex = withTimeout(new Mutex(), 1000);
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export async function getEmojiSize(url: string): Promise<Size> {
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const logger = new Logger("emoji");
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await mutex.runExclusive(() => {
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const attempted = cache.get(url);
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if (!attempted) {
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cache.set(url, true);
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} else {
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logger.warn(`Attempt limit exceeded: ${url}`);
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throw new Error("Too many attempts");
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}
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});
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try {
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logger.info(`Retrieving emoji size from ${url}`);
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const { width, height, mime } = await probeImageSize(url, {
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timeout: 5000,
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});
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if (!(mime.startsWith("image/") && FILE_TYPE_BROWSERSAFE.includes(mime))) {
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throw new Error("Unsupported image type");
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}
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return { width, height };
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} catch (e) {
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throw new Error(`Unable to retrieve metadata: ${e}`);
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}
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}
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export function getNormalSize(
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{ width, height }: Size,
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orientation?: number,
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): Size {
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return (orientation || 0) >= 5
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? { width: height, height: width }
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: { width, height };
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}
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