Submerged Ultrafiltration (SUF)

(() => {
  if (window.adroitEnquiryButtonsReady) return;

  window.adroitEnquiryButtonsReady = true;

  const rootSelector = ".adroit-contact-form";

  const buttonSelector = [
    "#wsf-1-field-38",
    "#wsf-1-field-39",
  ].join(", ");

  const values = {
    "wsf-1-field-38": "Product Enquiry",
    "wsf-1-field-39": "Service Request",
  };

  function getFormRoot(element) {
    return element.closest(rootSelector);
  }

  function getHiddenField(form) {
    let field = form.querySelector(
      'input[data-enquiry-type-field="true"]'
    );

    if (!field) {
      field = document.createElement("input");
      field.type = "hidden";
      field.name = "inquiry_type";
      field.dataset.enquiryTypeField = "true";

      form.appendChild(field);
    }

    return field;
  }

  function getErrorRow(formRoot) {
    let errorRow = formRoot.querySelector(
      '[data-enquiry-error-row="true"]'
    );

    if (errorRow) return errorRow;

    const fieldsGrid = formRoot.querySelector(".wsf-fields");
    const firstField = formRoot.querySelector(
      "#wsf-1-field-wrapper-20"
    );

    if (!fieldsGrid || !firstField) return null;

    errorRow = document.createElement("div");
    errorRow.className =
      "wsf-extra-small-12 wsf-tile wsf-field-wrapper";
    errorRow.dataset.enquiryErrorRow = "true";
    errorRow.hidden = true;

    const errorMessage = document.createElement("div");
    errorMessage.className = "wsf-invalid-feedback";
    errorMessage.textContent = "This field is required.";
    errorMessage.setAttribute("aria-live", "polite");

    errorRow.appendChild(errorMessage);

    fieldsGrid.insertBefore(errorRow, firstField);

    return errorRow;
  }

  function showError(formRoot) {
    const errorRow = getErrorRow(formRoot);

    if (!errorRow) return;

    errorRow.hidden = false;

    const errorMessage = errorRow.querySelector(
      ".wsf-invalid-feedback"
    );

    if (errorMessage) {
      errorMessage.style.display = "block";
    }

    formRoot.querySelectorAll(buttonSelector).forEach((button) => {
      button.classList.add("is-invalid");
      button.setAttribute("aria-invalid", "true");
    });
  }

  function clearError(formRoot) {
    const errorRow = formRoot.querySelector(
      '[data-enquiry-error-row="true"]'
    );

    if (errorRow) {
      errorRow.hidden = true;
    }

    formRoot.querySelectorAll(buttonSelector).forEach((button) => {
      button.classList.remove("is-invalid");
      button.removeAttribute("aria-invalid");
    });
  }

  function hasSelection(formRoot) {
    return Boolean(
      formRoot.querySelector(
        "#wsf-1-field-38.is-selected, #wsf-1-field-39.is-selected"
      )
    );
  }

  function validateEnquiry(formRoot) {
    if (hasSelection(formRoot)) {
      clearError(formRoot);
      return true;
    }

    showError(formRoot);
    return false;
  }

  function selectButton(button) {
    const formRoot = getFormRoot(button);
    const form = button.closest("form");

    if (!formRoot || !form) return;

    formRoot.querySelectorAll(buttonSelector).forEach((item) => {
      const isSelected = item === button;

      item.classList.toggle("is-selected", isSelected);
      item.setAttribute("aria-pressed", String(isSelected));
    });

    getHiddenField(form).value = values[button.id] || "";

    clearError(formRoot);
  }

  /*
   * Window capture runs before WS Form's button click handler.
   * This stops WS Form AJAX submission only when enquiry type is missing.
   */
  window.addEventListener(
    "click",
    (event) => {
      const enquiryButton = event.target.closest(
        `${rootSelector} #wsf-1-field-38, ${rootSelector} #wsf-1-field-39`
      );

      if (enquiryButton) {
        selectButton(enquiryButton);
        return;
      }

      const submitButton = event.target.closest(
        `${rootSelector} button[type="submit"], ${rootSelector} input[type="submit"]`
      );

      if (!submitButton) return;

      const formRoot = getFormRoot(submitButton);

      if (!formRoot) return;

      if (validateEnquiry(formRoot)) return;

      event.preventDefault();
      event.stopImmediatePropagation();
    },
    true
  );

  /*
   * Covers pressing Enter in a form field.
   */
  window.addEventListener(
    "submit",
    (event) => {
      const form = event.target;

      if (!(form instanceof HTMLFormElement)) return;

      const formRoot = getFormRoot(form);

      if (!formRoot) return;

      if (validateEnquiry(formRoot)) return;

      event.preventDefault();
      event.stopImmediatePropagation();
    },
    true
  );

  function initialize() {
    document.querySelectorAll(rootSelector).forEach((formRoot) => {
      const form = formRoot.querySelector("form");

      formRoot.querySelectorAll(buttonSelector).forEach((button) => {
        button.classList.remove("is-selected", "is-invalid");
        button.removeAttribute("aria-invalid");
        button.setAttribute("aria-pressed", "false");
      });

      clearError(formRoot);

      if (form) {
        getHiddenField(form).value = "";
      }
    });
  }

  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", initialize, {
      once: true,
    });
  } else {
    initialize();
  }
})();