import 'package:flutter/material.dart';

class FikoYTPageController extends PageController {
  static final Map<String, FikoYTPageController> _instances = {};

  final String id;
  int _lastPage;

  FikoYTPageController._(this.id, this._lastPage) : super(initialPage: _lastPage, keepPage: true, viewportFraction: 1) {
    addListener(_saveCurrentPage);
  }

  static FikoYTPageController getInstance(String id) {
    if (_instances.containsKey(id)) {
       print("${_instances[id]?.initialPage}");
      return _instances[id]!;
    }

    final controller = FikoYTPageController._(id, 0);
    _instances[id] = controller;
    return controller;
  }

  void _saveCurrentPage() {
    if (hasClients && page != null) {
      _lastPage = page!.round();
      _instances[id] = this; // Değiştiğinde instance güncelleniyor
    }
  }

  int get lastPage => _lastPage;

  @override
  void dispose() {
    removeListener(_saveCurrentPage);
    super.dispose();
  }
}