Migrate User.isBlocked uses before removing the field. (dart-lang#8451)

app/lib/account/backend.dart

@@ -138,7 +138,7 @@ Future<AuthenticatedAgent> _requireAuthenticatedAgent() async {
   if (user == null) {
     throw AuthenticationException.failed();
   }
-  if (user.isBlocked || user.isModerated) {
+  if (user.isModerated) {
     throw AuthorizationException.blocked();
   }
   if (user.isDeleted) {
@@ -458,7 +458,7 @@ class AccountBackend {
     final info = await authProvider.callTokenInfoWithAccessToken(
         accessToken: profile.accessToken ?? '');
     final user = await _lookupOrCreateUserByOauthUserId(profile);
-    if (user == null || user.isBlocked || user.isModerated || user.isDeleted) {
+    if (user == null || user.isModerated || user.isDeleted) {
       throw AuthenticationException.failed();
     }
     final data = await withRetryTransaction(_db, (tx) async {
@@ -535,7 +535,7 @@ class AccountBackend {
     }
 
     final user = await lookupUserById(session.userId!);
-    if (user == null || user.isBlocked || user.isModerated || user.isDeleted) {
+    if (user == null || user.isModerated || user.isDeleted) {
       return null;
     }
     return AuthenticatedUser(user,
@@ -613,25 +613,6 @@ class AccountBackend {
     _logger.info('Deleted ${count.deleted} UserSession entries.');
   }
 
-  /// Updates the blocked status of a user.
-  Future<void> updateBlockedFlag(String userId, bool isBlocked) async {
-    var expireSessions = false;
-    await withRetryTransaction(_db, (tx) async {
-      final user =
-          await tx.lookupOrNull<User>(_db.emptyKey.append(User, id: userId));
-      if (user == null) throw NotFoundException.resource('User:$userId');
-
-      if (user.isBlocked == isBlocked) return;
-      user.isBlocked = isBlocked;
-      tx.insert(user);
-      expireSessions = isBlocked;
-    });
-
-    if (expireSessions) {
-      await _expireAllSessions(userId);
-    }
-  }
-
   /// Updates the moderated status of a user.
   ///
   /// Expires all existing user sessions.

app/lib/account/models.dart

@@ -71,12 +71,11 @@ class User extends db.ExpandoModel<String> {
 
   User();
   User.init() {
-    isBlocked = false;
     isDeleted = false;
     isModerated = false;
   }
 
-  late final isVisible = !isBlocked && !isModerated && !isDeleted;
+  late final isVisible = !isModerated && !isDeleted;
   bool get isNotVisible => !isVisible;
 
   void updateIsModerated({

app/lib/tool/backfill/backfill_new_fields.dart

@@ -2,10 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:clock/clock.dart';
 import 'package:logging/logging.dart';
-import 'package:meta/meta.dart';
-import 'package:pub_dev/account/models.dart';
 import 'package:pub_dev/package/models.dart';
 import 'package:pub_dev/shared/datastore.dart';
 
@@ -17,34 +14,11 @@ final _logger = Logger('backfill_new_fields');
 /// CHANGELOG.md must be updated with the new fields, and the next
 /// release could remove the backfill from here.
 Future<void> backfillNewFields() async {
-  await migrateIsBlocked();
   await _removeKnownUnmappedFields();
 }
 
-/// Migrates entities from the `isBlocked` fields to the new `isModerated` instead.
-@visibleForTesting
-Future<void> migrateIsBlocked() async {
-  _logger.info('Migrating isBlocked...');
-  final userQuery = dbService.query<User>()..filter('isBlocked =', true);
-  await for (final entity in userQuery.run()) {
-    await withRetryTransaction(dbService, (tx) async {
-      final user = await tx.lookupValue<User>(entity.key);
-      // sanity check
-      if (!user.isBlocked) {
-        return;
-      }
-      user
-        ..isModerated = true
-        ..moderatedAt = user.moderatedAt ?? clock.now()
-        ..isBlocked = false;
-      tx.insert(user);
-    });
-  }
-
-  _logger.info('isBlocked migration completed.');
-}
-
 Future<void> _removeKnownUnmappedFields() async {
+  _logger.info('Removing unmapped fields...');
   await for (final p in dbService.query<Package>().run()) {
     if (p.additionalProperties.isEmpty) continue;
     if (p.additionalProperties.containsKey('automatedPublishingJson') ||
@@ -59,4 +33,5 @@ Future<void> _removeKnownUnmappedFields() async {
       });
     }
   }
+  _logger.info('Removing unmapped fields completed.');
 }