try saving with refreshed ids when importing to DB fails

src/itemService.js

@@ -1,5 +1,5 @@
 import { deferred } from './deferred';
-import { log } from './utils';
+import { log, refreshItemIds } from './utils';
 import {
 	collection,
 	deleteField,
@@ -170,21 +170,49 @@ export const itemService = {
 		} else {
 			const remoteDb = window.db.getDb();
 
-			const batch = writeBatch(remoteDb);
-			/* eslint-disable guard-for-in */
-			for (var id in items) {
-				items[id].createdBy = window.user.uid;
-				batch.set(doc(remoteDb, `items/${id}`), items[id]);
-				batch.update(doc(remoteDb, `users/${window.user.uid}`), {
-					[`items.${id}`]: true
-				});
-
-				// Set these items on our cached user object too
-				window.user.items = window.user.items || {};
-				window.user.items[id] = true;
+			function save(items) {
+				const batch = writeBatch(remoteDb);
+				/* eslint-disable guard-for-in */
+				for (var id in items) {
+					items[id].createdBy = window.user.uid;
+					batch.set(doc(remoteDb, `items/${id}`), items[id]);
+					batch.update(doc(remoteDb, `users/${window.user.uid}`), {
+						[`items.${id}`]: true
+					});
+				}
+				return batch.commit();
+				/* eslint-enable guard-for-in */
 			}
-			batch.commit().then(d.resolve);
-			/* eslint-enable guard-for-in */
+
+			function onSuccess(items) {
+				window.user.items = window.user.items || {};
+				for (var id in items) {
+					// Set these items on our cached user object too
+					window.user.items[id] = true;
+				}
+				d.resolve();
+			}
+
+			save(items)
+				.then(() => {
+					onSuccess(items);
+				})
+				.catch(e => {
+					// The only reason we know for this failing is the same creations were
+					// imported in other account. And hence they can't again be saved in the
+					// DB with same ID and different `createdBy`
+					// So now we save them with different IDs
+					log('Saving imported items failed. Trying with refreshed IDs now...');
+					const refreshedItems = refreshItemIds(items);
+					save(refreshedItems)
+						.then(() => {
+							onSuccess(refreshedItems);
+						})
+						.catch(e => {
+							log('Error saving items', e);
+							alert('Your items could not be saved. Please try again later.');
+						});
+				});
 		}
 		return d.promise;
 	},

src/utils.js

@@ -672,3 +672,16 @@ export function persistAuthUserLocally(user) {
 	keys.map(key => (obj[key] = user[key]));
 	window.localStorage.setItem('user', JSON.stringify(obj));
 }
+
+/**
+ * items is an object of  {itemId: item}. This fn changes all the keys to new item IDs
+ * */
+export function refreshItemIds(items) {
+	const newItems = {};
+	for (var id in items) {
+		const newId = generateRandomId();
+		items[id].id = newId;
+		newItems[newId] = items[id];
+	}
+	return newItems;
+}