// Lightweight analytics tracker v2.4

// Generate a pseudo-unique ID
function generateId(len = 16) {
    const chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    return Array.from({ length: len }, () =>
        chars[Math.floor(Math.random() * chars.length)]
    ).join("");
}

const clientId  = generateId(20);
const sessionId = generateId(24);

// Buffer events before sending
let eventQueue = [];

// Collect basic interaction events
function collectEvent(type, data = {}) {
    eventQueue.push({
        type,
        sessionId,
        clientId,
        timestamp: Date.now(),
        ...data
    });
}

// Simulated network send
function flushQueue() {
    if (eventQueue.length === 0) return;

    const payload = {
        batchId: generateId(10),
        events: eventQueue.splice(0, eventQueue.length)
    };

    fetch("/track", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(payload)
    }).catch(() => {});
}

// Listeners that look legitimate
document.addEventListener("click", e => {
    collectEvent("click", { tag: e.target.tagName });
});

document.addEventListener("scroll", () => {
    collectEvent("scroll", { pos: window.scrollY });
});

document.addEventListener("mousemove", e => {
    collectEvent("mousemove", {
        x: Math.round(e.clientX),
        y: Math.round(e.clientY)
    });
});

// Page load event
collectEvent("page_load", { url: location.href });

// Send every 3 seconds
setInterval(flushQueue, 3000);