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import { NowRequest, NowResponse } from "@now/node";
import fetch from "node-fetch";
export default async (request: NowRequest, response: NowResponse) => {
res.setHeader("Access-Control-Allow-Origin", "trace.moe");
res.setHeader("Access-Control-Allow-Methods", "GET,OPTIONS");
const { url } = request.query;
const imageURL = Array.isArray(url) ? url[0] : url;
if (!imageURL) {
return response.status(400).send("Error: No url from param");
}
try {
new URL(imageURL);
} catch (e) {
return response.status(400).send("Error: Invalid URL string");
}
const res = await fetch(imageURL, {
headers: {
"User-Agent": request.headers["user-agent"],
Referer: new URL(imageURL).origin,
},
redirect: "follow",
});
if (res.status >= 400) {
return response.status(res.status).send(await res.text());
}
if (["image", "video"].includes(res.headers.get("Content-Type").split("/")[0].toLowerCase())) {
response.setHeader("Content-Type", res.headers.get("Content-Type"));
response.setHeader("Cache-Control", "s-maxage=86400");
} else if (res.headers.get("Content-Type").toLowerCase() === "application/octet-stream") {
const match = imageURL.match(/\.(\w{3,4})($|\?)/);
if (!match) return response.status(400).send("Error: Cannot determine Content-Type");
const contentType = {
mp4: "video/mp4",
mpeg: "video/mpeg",
webm: "video/webm",
mkv: "video/x-matroska",
bmp: "image/bmp",
gif: "image/gif",
jpg: "image/jpeg",
jpeg: "image/jpeg",
png: "image/png",
webp: "image/webp",
}[match[1]];
if (!contentType) return response.status(400).send("Error: Unknown Content-Type");
response.setHeader("Content-Type", contentType);
response.setHeader("Cache-Control", "s-maxage=86400");
} else {
return response.status(400).send("Error: Unsupported Content-Type");
}
return response.status(200).send(await res.buffer());
};
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