JetFormBuilder / JetAppointments - get the number of Slots and Hours from appointment calendar

code.js

document.addEventListener("DOMContentLoaded", function () {
  if (!window?.JetPlugins?.hooks) {
    return;
  }

  const { addAction } = JetPlugins.hooks;

  addAction(
    "jet.fb.input.makeReactive",
    "jet-form-builder/jet-appointments-booking/custom-get-count",
    function (input) {
      if (!input?.nodes?.length) {
        return;
      }

      if (input.nodes[0]?.attributes['data-field']?.value == 'appointment') {
        input.watch(() => {
          let countSlots = [], countTime = [], dates = [];
          const formId = input.root.rootNode.dataset.formId,
            appointments = input.nodes[0].value ? JSON.parse(input.nodes[0].value) : [];

          appointments.forEach(element => {
            countTime.push((element.slotEnd - element.slot) / 60 * (element.count || 1));
            countSlots.push(element.count || 1);
            dates.push(element.date || '');
          });

          if (window.JetFormBuilder[formId].dataInputs?._jet_app_count_slots) {
            window.JetFormBuilder[formId].dataInputs._jet_app_count_slots.value.current = countSlots.reduce((accumulator, currentValue) => accumulator + currentValue, 0);
          }
          if (window.JetFormBuilder[formId].dataInputs?._jet_app_count_time) {
            window.JetFormBuilder[formId].dataInputs._jet_app_count_time.value.current = countTime.reduce((accumulator, currentValue) => accumulator + currentValue, 0);
          }
          if (window.JetFormBuilder[formId].dataInputs?._jet_app_date) {
            window.JetFormBuilder[formId].dataInputs._jet_app_date.value.current = dates.join(', ');
          }
        });
      }
    }
  );
});

1. Add field hidden field _jet_app_count_slots and _jet_app_count_time, set Manual input and leave empty input https://i.imgur.com/d3dOb5Y.png
2. Add code in html block (widget). Don't forget add <script> before the code and </script> after. https://i.imgur.com/gsnMier.png

Result: https://i.imgur.com/gGDdRXp.png