stream-api/chrome/script.js

let providers = new Map();
providers.set("www.youtube.com", "youtube");
providers.set("youtube.com", "youtube");
providers.set("youtu.be", "youtube");
providers.set("tv.nrk.no", "nrk");
providers.set("nx12210.your-storageshare.de", "nextcloud");

document.addEventListener("DOMContentLoaded", () => {
    let [button] = document.getElementsByTagName("button");
    button.addEventListener("click", (ev) => {
        chrome.tabs.query({currentWindow: true, active: true}, (tabs) => {
            let oldurl = new URL(tabs[0].url);
            let newurl = new URL("https://stream.purser.it");
            let search = new URLSearchParams();
            let hostname = oldurl.hostname.toLowerCase();
            if(providers.has(hostname)) {
                if(hostname.includes("youtube.com")) {
                    let newpath = oldurl.searchParams.get("v");
                    if((newpath instanceof String) || ((typeof newpath) === "string")) {
                        newurl.pathname = "/" + newpath;
                    }
                } else {
                    newurl.pathname = oldurl.pathname;
                }
                search.append("provider", providers.get(hostname));
            }
            newurl.search = search.toString();
            let tab = {};
            tab.url = newurl.href;
            chrome.tabs.create(tab);
        });
    });
});