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

class StorageService {
  static const String _projectsKey = 'projects';
  static const String _currentPortKey = 'current_port';

  Future<void> saveProjects(List<Project> projects) async {
    try {
      final prefs = await SharedPreferences.getInstance();
      final jsonList = projects.map((p) => p.toJson()).toList();
      final jsonString = json.encode(jsonList);
      final success = await prefs.setString(_projectsKey, jsonString);
      if (!success) {
        throw Exception('Failed to save projects to storage');
      }
      // Force a commit on web
      await prefs.reload();
    } catch (e) {
      rethrow;
    }
  }

  Future<List<Project>> loadProjects() async {
    try {
      final prefs = await SharedPreferences.getInstance();
      // Reload to ensure we get the latest data
      await prefs.reload();
      final jsonString = prefs.getString(_projectsKey);
      
      if (jsonString == null || jsonString.isEmpty) {
        return [];
      }

      final List<dynamic> jsonList = json.decode(jsonString);
      return jsonList.map((json) => Project.fromJson(json)).toList();
    } catch (e) {
      return [];
    }
  }

  Future<void> saveCurrentPort(int port) async {
    final prefs = await SharedPreferences.getInstance();
    await prefs.setInt(_currentPortKey, port);
  }

  Future<int> loadCurrentPort() async {
    final prefs = await SharedPreferences.getInstance();
    return prefs.getInt(_currentPortKey) ?? 8888;
  }
}