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import talent96 from "./data/talent96.js";
export default {
/*
Fetch event handler, this function will be called whenever a request is made to the worker.
The function will parse the request and return a response based on the request path.
@param {Request} request - the incoming request object
@param {Environment} environment - the environment object
@param {Context} context - the context object
@returns {Response} a new Response object
*/
async fetch(request, environment, context) {
const url = new URL(request.url);
switch (url.pathname) {
// return a simple hello world message
case "/":
return Respond({
message: "Hello, World! :3",
});
// return status of a given service
case "/status":
const service = url.searchParams.get("service");
const acceptedServices = [
"dns",
"load-balancer",
"cdn",
"functions",
"mysql-cluster",
"mongodb-cluster",
"redis-cluster",
"elasticsearch-cluster",
"git-connector",
"job-runners",
"container-registry",
"kubernetes-cluster",
"bare-metal-servers",
"game-server-api",
"anti-ddos-protection",
"anti-cheat-api",
];
if (acceptedServices.includes(service))
return Respond({
status: "ok",
});
return Respond({
error: `service not found`,
});
// check if twitch user is streaming from a whitelist
case "/96/twitch/streaming":
const channel = url.searchParams.get("channel");
if (!channel)
return Respond({
error: `channel not provided`,
});
const whitelist = ["zuedev", ...talent96];
if (!whitelist.includes(channel))
return Respond({
error: `channel not whitelisted`,
});
const channelLive = await isTwitchChannelLive(channel);
if (channelLive)
return Respond({
status: "live",
});
return Respond({
status: "offline",
});
// default case
default:
return Respond({
error: "not found",
});
}
},
};
/*
Helper function to respond with a JSON object
@param {object} body - the JSON object to respond with
@returns {Response} a new Response object
*/
function Respond(body) {
return new Response(JSON.stringify(body), {
headers: {
"Access-Control-Allow-Origin": "*",
"Content-Type": "application/json",
},
});
}
/*
Checks if a twitch channel is live by fetching the "live" preview image of the channel,
if the image is fetched successfully, then the channel is live, otherwise it's offline.
@param {string} channel - the twitch channel name
@returns {boolean} true if the channel is live, false otherwise
*/
async function isTwitchChannelLive(channel) {
// construct preview image url with channel name
const livePreviewUrl = `https://static-cdn.jtvnw.net/previews-ttv/live_user_${channel}-320x180.jpg`;
// fetch the preview image, don't follow redirects
const response = await fetch(livePreviewUrl, {
redirect: "manual",
});
// check if the image was fetched successfully
return response.ok;
}
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