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

class SiteConfig {
  final String id;
  final String name;
  final String url;
  final String consumerKey;
  final String consumerSecret;

  SiteConfig({
    required this.id,
    required this.name,
    required this.url,
    required this.consumerKey,
    required this.consumerSecret,
  });

  Map<String, dynamic> toJson() => {
        'id': id,
        'name': name,
        'url': url,
        'consumerKey': consumerKey,
        'consumerSecret': consumerSecret,
      };

  factory SiteConfig.fromJson(Map<String, dynamic> json) => SiteConfig(
        id: json['id'],
        name: json['name'],
        url: json['url'],
        consumerKey: json['consumerKey'],
        consumerSecret: json['consumerSecret'],
      );
}

class ProfileManager with ChangeNotifier {
  bool _isAuthenticated = false;
  bool _hasPin = false;
  List<SiteConfig> _sites = [];

  bool get isAuthenticated => _isAuthenticated;
  bool get hasPin => _hasPin;
  List<SiteConfig> get sites => _sites;

  ProfileManager() {
    _init();
  }

  Future<void> _init() async {
    final prefs = await SharedPreferences.getInstance();
    _hasPin = prefs.containsKey('app_pin');
    
    final sitesJson = prefs.getStringList('saved_sites') ?? [];
    _sites = sitesJson.map((s) => SiteConfig.fromJson(jsonDecode(s))).toList();
    
    notifyListeners();
  }

  Future<void> setPin(String pin) async {
    final prefs = await SharedPreferences.getInstance();
    await prefs.setString('app_pin', pin);
    _hasPin = true;
    _isAuthenticated = true; // Auto login on creation
    notifyListeners();
  }

  Future<bool> unlock(String pin) async {
    final prefs = await SharedPreferences.getInstance();
    final storedPin = prefs.getString('app_pin');
    if (storedPin == pin) {
      _isAuthenticated = true;
      notifyListeners();
      return true;
    }
    return false;
  }

  Future<void> addSite(SiteConfig site) async {
    _sites.add(site);
    await _saveSites();
    notifyListeners();
  }

  Future<void> removeSite(String id) async {
    _sites.removeWhere((s) => s.id == id);
    await _saveSites();
    notifyListeners();
  }

  Future<void> _saveSites() async {
    final prefs = await SharedPreferences.getInstance();
    final sitesJson = _sites.map((s) => jsonEncode(s.toJson())).toList();
    await prefs.setStringList('saved_sites', sitesJson);
  }

  void logout() {
    _isAuthenticated = false;
    notifyListeners();
  }
}