/**
 * 广告点击上报：点击任一带 data-ads-id / data-ads-location 的广告元素时，
 * 异步 POST 本站 BFF /api/ads/click（服务端补 appId 并转发 /api/app/ads/click）。
 * - 捕获阶段监听 click / auxclick（中键），不 preventDefault，不阻塞广告链接打开
 * - id、location 均为正整数才上报；失败静默
 */
(function () {
  var ENDPOINT = "/api/ads/click";

  function toPositiveInt(value) {
    var text = String(value == null ? "" : value).trim();
    if (!/^\d+$/.test(text)) return 0;
    var n = Number(text);
    return n > 0 && n <= 9007199254740991 ? n : 0;
  }

  function findAdElement(target) {
    var el = target && target.nodeType === 1 ? target : target && target.parentElement;
    return el && typeof el.closest === "function" ? el.closest("[data-ads-id][data-ads-location]") : null;
  }

  function report(adsId, location) {
    try {
      fetch(ENDPOINT, {
        method: "POST",
        headers: { "Content-Type": "application/json", Accept: "application/json" },
        body: JSON.stringify({ adsId: adsId, location: location }),
        credentials: "include",
        keepalive: true,
      }).catch(function () {});
    } catch (error) {
      // 上报失败静默，不影响广告跳转。
    }
  }

  function onClick(event) {
    if (event.type === "auxclick" && event.button !== 1) return;
    var el = findAdElement(event.target);
    if (!el) return;
    var adsId = toPositiveInt(el.getAttribute("data-ads-id"));
    var location = toPositiveInt(el.getAttribute("data-ads-location"));
    if (!adsId || !location) return;
    report(adsId, location);
  }

  document.addEventListener("click", onClick, true);
  document.addEventListener("auxclick", onClick, true);
})();