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const whitelist = ["/bot123456"];
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const tg_host = "api.telegram.org";
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addEventListener('fetch', event => {
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    event.respondWith(handleRequest(event.request))
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})
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function validate(path) {
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    for (var i = 0; i < whitelist.length; i++) {
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        if (path.startsWith(whitelist[i]))
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            return true;
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    }
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    return false;
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}
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async function handleRequest(request) {
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    var u = new URL(request.url);
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    u.host = tg_host;
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    if (!validate(u.pathname))
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        return new Response('Unauthorized', {
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            status: 403
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        });
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    var req = new Request(u, {
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        method: request.method,
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        headers: request.headers,
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        body: request.body
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    });
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    const result = await fetch(req);
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    return result;
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}