97 lines
3.5 KiB
Dart
97 lines
3.5 KiB
Dart
import 'dart:convert';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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import '../models/dinosaur.dart';
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class DinoProvider extends ChangeNotifier {
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List<Dinosaur> _allDinos = [];
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List<Dinosaur> _filteredDinos = [];
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Set<String> _favoriteNames = {};
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bool _isMetric = true;
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bool _isDarkMode = false;
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Dinosaur? _dinoOfTheDay;
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String _searchQuery = "";
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String _selectedDiet = "All";
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String _selectedClassification = "All";
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List<Dinosaur> get dinos => _filteredDinos;
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bool get isMetric => _isMetric;
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bool get isDarkMode => _isDarkMode;
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Dinosaur? get dinoOfTheDay => _dinoOfTheDay;
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String get selectedDiet => _selectedDiet;
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String get selectedClassification => _selectedClassification;
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List<String> get classifications {
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final types = _allDinos.map((d) => d.classification).toSet().toList();
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types.sort();
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return ["All", ...types];
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}
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bool isFavorite(String name) => _favoriteNames.contains(name);
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List<Dinosaur> getRelated(Dinosaur current) {
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return _allDinos.where((d) => d.family == current.family && d.name != current.name).toList();
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}
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Future<void> loadData() async {
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try {
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final String response = await rootBundle.loadString('assets/dinosaurs.json');
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final List<dynamic> data = json.decode(response);
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_allDinos = data.map((json) => Dinosaur.fromJson(json)).toList();
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if (_allDinos.isNotEmpty) {
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int dayIndex = DateTime.now().difference(DateTime(2024, 1, 1)).inDays;
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_dinoOfTheDay = _allDinos[dayIndex % _allDinos.length];
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}
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final prefs = await SharedPreferences.getInstance();
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_isMetric = prefs.getBool('isMetric') ?? true;
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_isDarkMode = prefs.getBool('isDarkMode') ?? false;
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_favoriteNames = (prefs.getStringList('favorites') ?? []).toSet();
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_applyFilters();
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} catch (e) {
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debugPrint("Error loading data: $e");
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}
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}
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void toggleUnits() async {
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_isMetric = !_isMetric;
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final prefs = await SharedPreferences.getInstance();
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await prefs.setBool('isMetric', _isMetric);
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notifyListeners();
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}
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void toggleTheme() async {
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_isDarkMode = !_isDarkMode;
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final prefs = await SharedPreferences.getInstance();
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await prefs.setBool('isDarkMode', _isDarkMode);
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notifyListeners();
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}
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String formatWeight(double kg) => _isMetric ? "${kg.toInt()} kg" : "${(kg * 2.204).toInt()} lbs";
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String formatLength(double m) => _isMetric ? "$m m" : "${(m * 3.28).toStringAsFixed(1)} ft";
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void toggleFavorite(String name) async {
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if (_favoriteNames.contains(name)) _favoriteNames.remove(name);
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else _favoriteNames.add(name);
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final prefs = await SharedPreferences.getInstance();
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await prefs.setStringList('favorites', _favoriteNames.toList());
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notifyListeners();
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}
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void updateSearch(String q) { _searchQuery = q; _applyFilters(); }
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void updateDietFilter(String d) { _selectedDiet = d; _applyFilters(); }
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void updateClassificationFilter(String c) { _selectedClassification = c; _applyFilters(); }
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void _applyFilters() {
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_filteredDinos = _allDinos.where((dino) {
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final matchesSearch = dino.name.toLowerCase().contains(_searchQuery.toLowerCase());
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final matchesDiet = _selectedDiet == "All" || dino.dietType == _selectedDiet;
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final matchesClass = _selectedClassification == "All" || dino.classification == _selectedClassification;
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return matchesSearch && matchesDiet && matchesClass;
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}).toList();
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notifyListeners();
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}
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} |