/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import 'package:flutter/widgets.dart';

import '../../controllers/unread_controller.dart';

/// Calls [builder] when [controller] changes and passes the unread status
/// of [unreadKey].
class UnreadBuilder extends StatelessWidget {
  const UnreadBuilder({
    super.key,
    required this.builder,
    required this.controller,
    required this.unreadKey,
  });

  final Widget Function(BuildContext context, bool isUnread) builder;
  final UnreadController controller;
  final Object unreadKey;

  @override
  Widget build(BuildContext context) {
    return AnimatedBuilder(
      animation: controller,
      builder: (context, child) {
        return builder(context, controller.isUnread(unreadKey));
      },
    );
  }
}
