(function () {
  function sendEvent(eventType, key,data = {}) {
    fetch("https://test.manga.ag/api/v1/system/track", {
      method: "POST",
      headers: {
        "Content-Type": "application/json",
        "x-api-key": 'e812de03-20f1-4de8-a20e-6e59f72c87b0'
      },
      body: JSON.stringify({
        event_type:eventType,
        key:key,
        data:data,
        url: window.location.href,
        referrer: document.referrer,
        useragent: navigator.userAgent,
        language: navigator.language
      })
    }).catch(e => console.error("Tracking error:", e));
  }
  sendEvent("page_view");
  window.trackEvent = sendEvent;
})();