b23 cloudflare worker

b23.js

addEventListener('fetch', event => {
  event.respondWith(handleRequest(event.request))
})

/**
 * Respond to the request
 * @param {Request} request
 */
async function handleRequest(request) {
    let url = request.url.substr(8)
    console.log(url)
    url = url.substr(url.indexOf('/') + 1).replace('https://b23.tv','').replace('b23.tv','').replaceAll('/','')
    console.log('https://b23.tv/' + url)
    let a = await fetch('https://b23.tv/' + url,{
        redirect: 'manual'
    })
    console.log(a.headers.get('Location'))
    try {
        return new Response(a.headers.get('Location').split('?')[0], {status: 200})
    }catch (error){
        return new Response('https://www.bilibili.com', {status: 200})
    }
}