var session = localStorage.getItem("analyze_session")

if (session === null) {
    function UUID() {
        return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, function(c) {
            const r = Math.random() * 16 | 0;
            const v = c === "x" ? r : (r & 0x3 | 0x8);
            return v.toString(16);
        });
    }
    session = UUID()
    localStorage.setItem("analyze_session", session)
}
const script = document.createElement("script");
script.src = 'https://unpkg.shop.jd.com/axios@1.13.2/dist/axios.min.js'
document.head.appendChild(script);

const engagedKey = `analyze_engaged_${session}`;
let engagePosted = localStorage.getItem(engagedKey) === "1";

function postEngage() {
    if (engagePosted) return;
    if (!window.axios) {
        setTimeout(postEngage, 200);
        return;
    }
    engagePosted = true;
    localStorage.setItem(engagedKey, "1");
    axios.post("/analyze/engage", {
        "link": location.href,
        "userAgent": navigator.userAgent,
        "profile": session,
    });
}

function onFirstEngage() {
    postEngage();
    window.removeEventListener('scroll', onScrollEngage);
}

let scrollEngagePending = false;
function onScrollEngage() {
    if (scrollEngagePending) return;
    scrollEngagePending = true;
    setTimeout(() => {
        scrollEngagePending = false;
        onFirstEngage();
    }, 200);
}

window.addEventListener('click', onFirstEngage, { once: true, passive: true });
window.addEventListener('keydown', onFirstEngage, { once: true, passive: true });
window.addEventListener('touchstart', onFirstEngage, { once: true, passive: true });
window.addEventListener('scroll', onScrollEngage, { passive: true });

const _historyWrap = function(type) {
    const orig = history[type];
    const e = new Event(type);
    return function() {
        const rv = orig.apply(this, arguments);
        e.arguments = arguments;
        window.dispatchEvent(e);
        return rv;
    };
};
history.pushState = _historyWrap('pushState');
history.replaceState = _historyWrap('replaceState');

window.addEventListener('pushState', function(e) {
    axios.post("/analyze/view",{
        "link":e.arguments[2],
        "userAgent":navigator.userAgent,
        "profile":session,
    })
});
window.addEventListener('replaceState', function(e) {
    //console.log('change replaceState');
});

function onEnter() {
    setTimeout(() => {
        axios.post("/analyze/enter",{
            "referer":document.referrer,
            "link":location.href,
            "userAgent":navigator.userAgent,
            "profile":session,
        })
    },200)
}

document.addEventListener("DOMContentLoaded", onEnter);