import 'package:shared_preferences/shared_preferences.dart';
import 'dart:convert';

class SharedPreferenceHelper {
  // Store an object in SharedPreferences
  static Future<void> setPreferenceObject(String key, Object value) async {
    final prefs = await SharedPreferences.getInstance();
    String jsonString = jsonEncode(value); // Convert object to JSON string
    prefs.setString(key, jsonString); // Save JSON string in SharedPreferences
  }

  // Retrieve an object from SharedPreferences
  static Future<T?> getPreferenceObject<T>(
      String key, T Function(Map<String, dynamic>) fromJson) async {
    final prefs = await SharedPreferences.getInstance();
    String? jsonString = prefs.getString(key); // Get JSON string
    if (jsonString == null) return null;
    Map<String, dynamic> jsonMap =
        jsonDecode(jsonString); // Convert JSON string to Map
    return fromJson(jsonMap); // Convert Map to Object using fromJson
  }
}