1 files changed, 38 insertions, 0 deletions
diff --git a/app/assets/javascripts/lib/utils/rails_ujs.js b/app/assets/javascripts/lib/utils/rails_ujs.js
index 8b40cc7bd11..6b1985a23ba 100644
--- a/app/assets/javascripts/lib/utils/rails_ujs.js
+++ b/app/assets/javascripts/lib/utils/rails_ujs.js
@@ -1,4 +1,42 @@
 import Rails from '@rails/ujs';
+import { confirmViaGlModal } from './confirm_via_gl_modal/confirm_via_gl_modal';
+
+function monkeyPatchConfirmModal() {
+  /**
+   * This function is used to replace the `Rails.confirm` which uses `window.confirm`
+   *
+   * This function opens a confirmation modal which will resolve in a promise.
+   * Because the `Rails.confirm` API is synchronous, we go with a little hack here:
+   *
+   * 1. User clicks on something with `data-confirm`
+   * 2. We open the modal and return `false`, ending the "Rails" event chain
+   * 3. If the modal is closed and the user "confirmed" the action
+   *     1. replace the `Rails.confirm` with a function that always returns `true`
+   *     2. click the same element programmatically
+   *
+   * @param message {String} Message to be shown in the modal
+   * @param element {HTMLElement} Element that was clicked on
+   * @returns {boolean}
+   */
+  function confirmViaModal(message, element) {
+    confirmViaGlModal(message, element)
+      .then((confirmed) => {
+        if (confirmed) {
+          Rails.confirm = () => true;
+          element.click();
+          Rails.confirm = confirmViaModal;
+        }
+      })
+      .catch(() => {});
+    return false;
+  }
+
+  Rails.confirm = confirmViaModal;
+}
+
+if (gon?.features?.bootstrapConfirmationModals) {
+  monkeyPatchConfirmModal();
+}
 
 export const initRails = () => {
   // eslint-disable-next-line no-underscore-dangle