feat(KAN-20): unify dialogs feedback and protect ticket drafts

resources/js/composables/useUnsavedChanges.ts

@@ -0,0 +1,42 @@
+import type { PendingVisit } from '@inertiajs/core';
+import { router } from '@inertiajs/vue3';
+import { onMounted, onUnmounted, toValue } from 'vue';
+import type { MaybeRefOrGetter } from 'vue';
+import { useLocalization } from '@/composables/useLocalization';
+
+export function useUnsavedChanges(
+    dirty: MaybeRefOrGetter<boolean>,
+    allowVisit: (visit: PendingVisit) => boolean = () => false,
+) {
+    const { t } = useLocalization();
+    let removeBeforeListener: (() => void) | undefined;
+
+    const confirmLeave = (): boolean =>
+        !toValue(dirty) || window.confirm(t('forms.leaveConfirm'));
+
+    const beforeUnload = (event: BeforeUnloadEvent): void => {
+        if (toValue(dirty)) {
+            event.preventDefault();
+            event.returnValue = '';
+        }
+    };
+
+    onMounted(() => {
+        removeBeforeListener = router.on('before', (event) => {
+            if (event.defaultPrevented || allowVisit(event.detail.visit)) {
+                return;
+            }
+
+            // Keep the original visit and its callbacks; never replay a mutation.
+            return confirmLeave();
+        });
+        window.addEventListener('beforeunload', beforeUnload);
+    });
+
+    onUnmounted(() => {
+        removeBeforeListener?.();
+        window.removeEventListener('beforeunload', beforeUnload);
+    });
+
+    return { confirmLeave };
+}