switch to base58 encoding for collectionKey in publicUrl

lib/ui/share_collection_widget.dart

@@ -1,5 +1,6 @@
 import 'dart:ui';
 
+import 'package:fast_base58/fast_base58.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_typeahead/flutter_typeahead.dart';
@@ -18,7 +19,6 @@ import 'package:photos/ui/loading_widget.dart';
 import 'package:photos/ui/payment/subscription.dart';
 import 'package:photos/utils/dialog_util.dart';
 import 'package:photos/utils/email_util.dart';
-import 'package:photos/utils/hex.dart';
 import 'package:photos/utils/share_util.dart';
 import 'package:photos/utils/toast_util.dart';
 
@@ -210,8 +210,7 @@ class _SharingDialogState extends State<SharingDialog> {
   }
 
   Widget _getShareableUrlWidget() {
-    var hexEncoder = HexEncoder(upperCase: false);
-    String collectionKey = hexEncoder.convert(
+    String collectionKey = Base58Encode(
         CollectionsService.instance.getCollectionKey(widget.collection.id));
     String url = "${widget.collection.publicURLs.first.url}#$collectionKey";
     return SingleChildScrollView(

pubspec.lock

@@ -274,6 +274,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.2.0"
+  fast_base58:
+    dependency: "direct main"
+    description:
+      name: fast_base58
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.2.1"
   ffi:
     dependency: transitive
     description:

pubspec.yaml

@@ -37,6 +37,7 @@ dependencies:
   exif: ^3.0.0
   expansion_tile_card: ^2.0.0
   extended_image: ^6.0.1
+  fast_base58: ^0.2.1
   firebase_core: ^1.10.0
   firebase_messaging: ^11.1.0
   flutter: