// Logo, 23.05.02.22.09
// Proxy a random logo from one endpoint.
// If loaded in the browser, return a tappable HTML response to cycle logos.
// Otherwise, proxy the `.png`.
/* #region 🏁 TODO
- [] Make it cooler?
#endregion */
import { respond } from "../../backend/http.mjs";
import { logoUrl } from "../../backend/logo.mjs";
export async function handler(event, context) {
// Make sure this is a GET request
if (event.httpMethod !== "GET") {
return respond(405, { error: "Wrong request type." });
}
const { got } = await import("got");
const queryParams = new URLSearchParams(event.queryStringParameters);
const previousLogo = queryParams.get("previousLogo");
let logo;
do {
logo = logoUrl();
} while (logo === previousLogo); // Make sure we don't select the same logo
const response = await got(logo, {
responseType: "buffer",
https: { rejectUnauthorized: false },
});
const base64Logo = Buffer.from(response.body, "binary").toString("base64");
const userAgent = event.headers["user-agent"] || "";
const isServer =
userAgent.includes("curl") ||
userAgent.includes("wget") ||
userAgent.includes("python-requests") ||
userAgent.includes("node-fetch");
const isPngEndpoint = event.path.split("/").pop() === "logo.png";
// Return raw PNG when embedded via ![]()
tags (Accept header prefers images)
const accept = event.headers["accept"] || "";
const wantsImage = accept.startsWith("image/") || (accept.includes("image/*") && !accept.includes("text/html"));
if (isServer || isPngEndpoint || wantsImage) {
return {
statusCode: 200,
headers: {
"Content-Type": "image/png",
"Access-Control-Allow-Origin": "*",
"Cache-Control": "no-cache",
},
body: base64Logo,
isBase64Encoded: true,
};
} else {
const htmlResponse = `
`;
return {
statusCode: 200,
headers: {
"Content-Type": "text/html",
},
body: htmlResponse,
};
}
}
const randomPurple = () => {
const r = Math.floor(Math.random() * 50 + 50); // Values between 200 and 255
const g = Math.floor(Math.random() * 25); // Values between 0 and 50
const b = Math.floor(Math.random() * 50 + 50); // Values between 200 and 255
return `rgb(${r},${g},${b})`;
};