window.dataLayer = window.dataLayer || [];

function norm(v) {
  return (v == null ? "" : String(v)).trim().toLowerCase();
}

const HS_FORM_CONFIG = {
  "1dcd34dd-6443-49d6-831c-541dd9fa5870": {
    form_type: "New business",
    fields: {
      hear: "0-1/how_did_you_hear_about_us_"
    }
  },
  "ae113460-590a-4a6f-be6e-edea630fe7bd": {
    form_type: "Subscribe",
    fields: {}
  }
};

function getVal(scopeEl, name) {
  if (!name) return "";
  const el = scopeEl.querySelector(`[name="${CSS.escape(name)}"]`);
  return el ? el.value : "";
}

function readPayload(formEl, config) {
  const f = config.fields;

  return {
    form_type: config.form_type || "",
    hear: norm(getVal(formEl, f.hear))
  };
}

function pushDataLayer(payload) {
  window.dataLayer.push({
    event: "hubspot_form_submission",
    form_type: payload.form_type || "",
    hear: payload.hear || "",
    page_url: window.location.href
  });
}

function bindHubSpotForms() {
  document.querySelectorAll(".hsfc-FormWrapper form.hsfc-Form").forEach((formEl) => {
    if (formEl.__hsDlBound) return;
    formEl.__hsDlBound = true;

    const wrapper = formEl.closest(".hsfc-FormWrapper");
    if (!wrapper) return;

    wrapper.__hsPending = null;
    wrapper.__hsPushed = false;

    formEl.addEventListener("submit", function () {
      const formId = formEl.getAttribute("data-form-id");
      const config = HS_FORM_CONFIG[formId];
      if (!config) return;

      const payload = readPayload(formEl, config);
      wrapper.__hsPending = payload;
    }, true);

    const obs = new MutationObserver(function () {
      if (wrapper.__hsPushed) return;

      if (wrapper.querySelector(".hsfc-PostSubmit")) {
        const pending = wrapper.__hsPending;

        if (pending) {
          pushDataLayer(pending);
        }

        wrapper.__hsPushed = true;
        obs.disconnect();
      }
    });

    obs.observe(wrapper, { childList: true, subtree: true });
  });
}

function initHsDl() {
  bindHubSpotForms();
  setTimeout(bindHubSpotForms, 250);
  setTimeout(bindHubSpotForms, 1000);
  setTimeout(bindHubSpotForms, 2500);
  setTimeout(bindHubSpotForms, 5000);
}

if (document.readyState === "loading") {
  document.addEventListener("DOMContentLoaded", initHsDl);
} else {
  initHsDl();
}