const tgInfo={
    isInit:false,
}
const checkLoadTelegramJs=async ()=>{
    if (tgInfo.isInit)return true;
    let isInTG=window.location.hash.indexOf("tgWebAppData") !== -1;
    if (!isInTG)return false;
    return new Promise( (t, n) => {
        var q = document.createElement("script");
        q.type = "text/javascript";
        q.src = "https://telegram.org/js/telegram-web-app.js?56";
        document.body.appendChild(q);
        const r = setTimeout( () => {
                q.onerror = null;
                q.onload = null;
                t(false);
            }, 10000);
        q.onload = () => {
                clearTimeout(r);
                console.log("finish telegram js");
                tgInfo.isInit=true;
                t(true);
        };
        q.onerror = () => {
            clearTimeout(r);
            q.onerror = null;
            q.onload = null;
            n(false)
        }
    });
}
const init=async ()=>{
    return await checkLoadTelegramJs();
}
const getTGWebApp=()=>{
    let Telegram=window.Telegram;
    if (Telegram){
        return Telegram.WebApp;
    }
    return null;
}
const getInitData=()=>{
    //window.Telegram.WebApp.initData
    let webApp=getTGWebApp();
    if (webApp)return webApp.initData;
    return "";
}
const getTGUser=()=>{
    let webApp=getTGWebApp();
    if (webApp){
        let initDataUnsafe=webApp.initDataUnsafe;
        if (initDataUnsafe){
            return initDataUnsafe.user;
        }
    }
    return null;
}
const TGHelper={
    init,
    getTGWebApp,
    getInitData,
    getTGUser
}
export default TGHelper;