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Updated metadata function

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This commit is contained in:
Nicholas Jitkoff 2022-04-28 09:07:58 -06:00
parent 841663ed80
commit 531abba12e
1 changed files with 20 additions and 21 deletions
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41
netlify/edge-functions/index.js
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@ -1,28 +1,29 @@
// import { Context } from "netlify:edge";
export default async (request, context) => {
const agent = request.headers.get("user-agent");
const useragent = request.headers.get("user-agent");
let url = new URL(request.url);
let path = url.pathname;
if (agent.indexOf("Twitterbot") != -1 || agent.indexOf("curl") != -1 || agent.indexOf("facebookexternalhit") != -1 || agent.indexOf("Slackbot-LinkExpanding") != -1 || agent.indexOf("Discordbot") != -1) {
let metadataBots = [ "Twitterbot", "curl", "facebookexternalhit", "Slackbot-LinkExpanding", "Discordbot"]
let isMetadataBot = metadataBots.some(bot => useragent.indexOf(bot) != -1);
if (isMetadataBot) {
let components = path.split("/");
components.shift();
components.pop();
let title = decodeURIComponent(components.shift()).replace("_", " ");
let desc = decodeURIComponent(components.shift()).replace("_", " ");
let image = decodeURIComponent(components.join("/"));
let content = "";
if (title) content += `<title>${title}</title><meta property="og:title" content="${title}"/>`;
if (desc && desc.length > 1) content += `<meta name="description" content="${desc}"/><meta property="og:description" content="${desc}"/>`;
if (title) {
content += `<title>${title}</title><meta property="og:title" content="${title}"/>`;
content += `<meta property="og:site_name" content="BITTY"/>`
}
if (desc && desc.length > 1) {
content += `<meta name="description" content="${desc}"/><meta property="og:description" content="${desc}"/>`;
}
if (image) {
if (image.startsWith("http")) {
//console.debug("URL Image", image)
content += `<meta property="og:image" content="${image}"/>`;
} else {
image = decodeURIComponent(image)
//console.log("Emoji Image", image);
let codepoints = [];
for (const char of image) {
codepoints.push(char.codePointAt(0).toString(16));
@ -30,17 +31,15 @@ export default async (request, context) => {
content += `<link rel="icon" type="image/png" href="https://fonts.gstatic.com/s/e/notoemoji/14.0/${codepoints.join("_")}/128.png">`
}
}
context.log(title, "|", desc || "-", "|", image || "-");
return new Response(content, {
headers: { "content-type": "text/html" },
});
} else {
// console.log("Forward: " + "/?" + path)
// return (context.rewrite("/?" + path))
}
};
// else {
// console.log("Forward: " + "/?" + path)
// return (context.rewrite("/?" + path))
// }
}