Remember prev choice in new collection dialog

app/lib/pref.dart

@@ -382,6 +382,18 @@ class AccountPref {
     }
   }
 
+  int? getLastNewCollectionType() =>
+      provider.getInt(PrefKey.lastNewCollectionType);
+  int getLastNewCollectionTypeOr(int def) => getLastNewCollectionType() ?? def;
+  Future<bool> setLastNewCollectionType(int? value) {
+    if (value == null) {
+      return _remove(PrefKey.lastNewCollectionType);
+    } else {
+      return _set<int>(PrefKey.lastNewCollectionType, value,
+          (key, value) => provider.setInt(key, value));
+    }
+  }
+
   Future<bool> _set<T>(PrefKey key, T value,
       Future<bool> Function(PrefKey key, T value) setFn) async {
     if (await setFn(key, value)) {
@@ -621,6 +633,7 @@ enum PrefKey {
   isEnableMemoryAlbum,
   touchRootEtag,
   accountLabel,
+  lastNewCollectionType,
 }
 
 extension on PrefKey {
@@ -710,6 +723,8 @@ extension on PrefKey {
         return "touchRootEtag";
       case PrefKey.accountLabel:
         return "accountLabel";
+      case PrefKey.lastNewCollectionType:
+        return "lastNewCollectionType";
     }
   }
 }

app/lib/widget/new_collection_dialog/bloc.dart

@@ -6,6 +6,7 @@ class _Bloc extends Bloc<_Event, _State> {
     required this.account,
     required Set<_ProviderOption> supportedProviders,
   }) : super(_State.init(
+          account: account,
           supportedProviders: supportedProviders,
         )) {
     on<_FormEvent>(_onFormEvent);
@@ -63,6 +64,8 @@ class _Bloc extends Bloc<_Event, _State> {
         contentProvider: _buildProvider(),
       ),
     ));
+    unawaited(AccountPref.of(account)
+        .setLastNewCollectionType(state.formValue.provider.index));
   }
 
   CollectionContentProvider _buildProvider() {

app/lib/widget/new_collection_dialog/state_event.dart

@@ -25,11 +25,26 @@ class _State {
   });
 
   factory _State.init({
+    required Account account,
     required Set<_ProviderOption> supportedProviders,
   }) {
+    final prevType =
+        AccountPref.of(account).getLastNewCollectionType()?.run((t) {
+      try {
+        return _ProviderOption.values[t];
+      } catch (_) {
+        return null;
+      }
+    });
+    var provider = prevType ?? _ProviderOption.ncAlbum;
+    if (!supportedProviders.contains(provider)) {
+      provider = _ProviderOption.appAlbum;
+    }
     return _State(
       supportedProviders: supportedProviders,
-      formValue: const _FormValue(),
+      formValue: _FormValue(
+        provider: provider,
+      ),
       showDialog: true,
     );
   }