Alert user before closing the createItemModal form

The form data inside the `createItemModal` was getting lost when user
hit the `cancel` button. This could lead to a bad UX.

This fix will identifies if form data has changed from its initial
values before closing the modal. If yes, then it alerts the user for
confirmation. Otherwise, will close the modal.

Closes: #2822

Add cypress test for confirmation modal

.changeset/purple-knives-cough.md

@@ -0,0 +1,5 @@
+---
+'@keystonejs/app-admin-ui': patch
+---
+
+Alerted the user before canceling the createItemModal form.

packages/app-admin-ui/client/components/CreateItemModal.js

@@ -16,6 +16,7 @@ import { useToasts } from 'react-toast-notifications';
 
 import { Button, LoadingButton } from '@arch-ui/button';
 import Drawer from '@arch-ui/drawer';
+import Confirm from '@arch-ui/confirm';
 import {
   arrayToObject,
   captureSuspensePromises,
@@ -50,6 +51,7 @@ const CreateItemModal = ({ prefillData = {}, onClose, onCreate, viewOnSave }) =>
   const { list, closeCreateItemModal, isCreateItemModalOpen } = useList();
 
   const [item, setItem] = useState(list.getInitialItemData({ prefill: prefillData }));
+  const [isConfirmOpen, setConfirmOpen] = useState(false);
   const [validationErrors, setValidationErrors] = useState({});
   const [validationWarnings, setValidationWarnings] = useState({});
 
@@ -129,16 +131,41 @@ const CreateItemModal = ({ prefillData = {}, onClose, onCreate, viewOnSave }) =>
     }
   });
 
-  const _onClose = () => {
-    if (loading) return;
+  // Identifies if the user has changed the initial data in the form.
+  const hasFormDataChanged = () => {
+    const data = arrayToObject(creatable, 'path');
+    let hasChanged = false;
+    const initialData = list.getInitialItemData({ prefill: prefillData });
+    const initialValues = getValues(data, initialData);
+    const currentValues = getValues(data, item);
+    for (const path of Object.keys(currentValues)) {
+      if (data[path].hasChanged(initialValues, currentValues)) {
+        hasChanged = true;
+        break;
+      }
+    }
+    return hasChanged;
+  };
+
+  const _createItemModalClose = () => {
     closeCreateItemModal();
     setItem(list.getInitialItemData({}));
-    const data = arrayToObject(creatable, 'path', field => field.serialize(item));
     if (onClose) {
+      const data = arrayToObject(creatable, 'path', field => field.serialize(item));
       onClose(data);
     }
   };
 
+  const _onClose = () => {
+    if (loading) return;
+    if (hasFormDataChanged()) {
+      // Ask for user confirmation before canceling.
+      setConfirmOpen(true);
+      return;
+    }
+    _createItemModalClose();
+  };
+
   const _onKeyDown = event => {
     if (event.defaultPrevented) return;
     switch (event.key) {
@@ -244,10 +271,36 @@ const CreateItemModal = ({ prefillData = {}, onClose, onCreate, viewOnSave }) =>
               ));
             }}
           </Render>
+          <ConfirmModal
+            onConfirm={isConfirmOpen}
+            onCancel={() => {
+              setConfirmOpen(false);
+              _createItemModalClose();
+            }}
+            onNo={() => setConfirmOpen(false)}
+          />
         </Suspense>
       </div>
     </Drawer>
   );
 };
 
+const ConfirmModal = ({ isOpen, onConfirm, onCancel }) => {
+  return (
+    <Confirm isOpen={isOpen}>
+      <p style={{ marginTop: 0 }}>
+        All of your form data will be lost. Are you sure you want to cancel?
+      </p>
+      <footer>
+        <Button appearance="danger" variant="ghost" onClick={onConfirm}>
+          Ok
+        </Button>
+        <Button variant="subtle" onClick={onCancel}>
+          Cancel
+        </Button>
+      </footer>
+    </Confirm>
+  );
+};
+
 export default CreateItemModal;

test-projects/basic/cypress/integration/create-buttons_spec.js

@@ -75,4 +75,21 @@ describe('Home page', () => {
       cy.contains('div', `Create ${text} Dialog`).should('not.exist');
     });
   });
+
+  it('Ensure Create Modal triggers a confirmation dialog when form data is filled, and user hits cancel button', () => {
+    cy.visit('/admin/users');
+
+    cy.get('#list-page-create-button').click({ force: true });
+    cy.get('#ks-input-name').type('Aman', {
+      force: true,
+    });
+    cy.contains('div', `Create User Dialog`)
+      .contains('button', 'Cancel')
+      .click({ force: true });
+
+    cy.get('div[role="alertdialog"]')
+      .contains('button', 'Cancel')
+      .click({ force: true });
+    cy.contains('div', `Create User Dialog`).should('exist');
+  });
 });