Agrega PRIVACY.md, actualiza AGENTS.md

lib/utils/currency_utils.dart

@@ -0,0 +1,76 @@
+import 'package:intl/intl.dart';
+
+class CurrencyInfo {
+  final String code;
+  final String name;
+  final String symbol;
+
+  const CurrencyInfo({
+    required this.code,
+    required this.name,
+    required this.symbol,
+  });
+}
+
+class CurrencyUtils {
+  static const List<CurrencyInfo> allCurrencies = [
+    CurrencyInfo(code: 'USD', name: 'US Dollar', symbol: r'$'),
+    CurrencyInfo(code: 'EUR', name: 'Euro', symbol: '€'),
+    CurrencyInfo(code: 'GBP', name: 'British Pound', symbol: '£'),
+    CurrencyInfo(code: 'JPY', name: 'Japanese Yen', symbol: '¥'),
+    CurrencyInfo(code: 'MXN', name: 'Mexican Peso', symbol: r'MX$'),
+    CurrencyInfo(code: 'COP', name: 'Colombian Peso', symbol: r'$'),
+    CurrencyInfo(code: 'ARS', name: 'Argentine Peso', symbol: r'$'),
+    CurrencyInfo(code: 'PEN', name: 'Peruvian Sol', symbol: 'S/'),
+    CurrencyInfo(code: 'CLP', name: 'Chilean Peso', symbol: r'$'),
+    CurrencyInfo(code: 'BRL', name: 'Brazilian Real', symbol: r'R$'),
+    CurrencyInfo(code: 'CAD', name: 'Canadian Dollar', symbol: r'CA$'),
+    CurrencyInfo(code: 'AUD', name: 'Australian Dollar', symbol: r'A$'),
+    CurrencyInfo(code: 'CHF', name: 'Swiss Franc', symbol: 'CHF'),
+    CurrencyInfo(code: 'CNY', name: 'Chinese Yuan', symbol: '¥'),
+    CurrencyInfo(code: 'INR', name: 'Indian Rupee', symbol: '₹'),
+    CurrencyInfo(code: 'KRW', name: 'South Korean Won', symbol: '₩'),
+    CurrencyInfo(code: 'SEK', name: 'Swedish Krona', symbol: 'kr'),
+    CurrencyInfo(code: 'NOK', name: 'Norwegian Krone', symbol: 'kr'),
+    CurrencyInfo(code: 'NZD', name: 'New Zealand Dollar', symbol: r'NZ$'),
+    CurrencyInfo(code: 'UYU', name: 'Uruguayan Peso', symbol: r'$U'),
+    CurrencyInfo(code: 'PYG', name: 'Paraguayan Guarani', symbol: '₲'),
+    CurrencyInfo(code: 'BOB', name: 'Bolivian Boliviano', symbol: 'Bs'),
+    CurrencyInfo(code: 'CRC', name: 'Costa Rican Colón', symbol: '₡'),
+    CurrencyInfo(code: 'DOP', name: 'Dominican Peso', symbol: r'RD$'),
+    CurrencyInfo(code: 'GTQ', name: 'Guatemalan Quetzal', symbol: 'Q'),
+    CurrencyInfo(code: 'HNL', name: 'Honduran Lempira', symbol: 'L'),
+    CurrencyInfo(code: 'NIO', name: 'Nicaraguan Córdoba', symbol: r'C$'),
+    CurrencyInfo(code: 'PAB', name: 'Panamanian Balboa', symbol: 'B/.'),
+    CurrencyInfo(code: 'VES', name: 'Venezuelan Bolívar', symbol: 'Bs.S'),
+    CurrencyInfo(code: 'SGD', name: 'Singapore Dollar', symbol: r'S$'),
+    CurrencyInfo(code: 'HKD', name: 'Hong Kong Dollar', symbol: r'HK$'),
+    CurrencyInfo(code: 'TRY', name: 'Turkish Lira', symbol: '₺'),
+    CurrencyInfo(code: 'TWD', name: 'Taiwan Dollar', symbol: r'NT$'),
+    CurrencyInfo(code: 'THB', name: 'Thai Baht', symbol: '฿'),
+    CurrencyInfo(code: 'ZAR', name: 'South African Rand', symbol: 'R'),
+    CurrencyInfo(code: 'ILS', name: 'Israeli Shekel', symbol: '₪'),
+    CurrencyInfo(code: 'DKK', name: 'Danish Krone', symbol: 'kr'),
+    CurrencyInfo(code: 'PLN', name: 'Polish Zloty', symbol: 'zł'),
+  ];
+
+  static const _zeroDecimal = {'JPY', 'KRW', 'CLP', 'PYG', 'COP'};
+
+  static String getSymbol(String code) {
+    final idx = allCurrencies.indexWhere((c) => c.code == code);
+    return idx >= 0 ? allCurrencies[idx].symbol : r'$';
+  }
+
+  static String getDisplayName(String code) {
+    final idx = allCurrencies.indexWhere((c) => c.code == code);
+    return idx >= 0 ? '${allCurrencies[idx].code} - ${allCurrencies[idx].name}' : code;
+  }
+
+  static String formatPrice(double amount, String code) {
+    final symbol = getSymbol(code);
+    final fmt = _zeroDecimal.contains(code)
+        ? NumberFormat('#,##0')
+        : NumberFormat('#,##0.00');
+    return '$symbol${fmt.format(amount)}';
+  }
+}

lib/utils/transitions.dart

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+import 'package:flutter/material.dart';
+
+class SmoothPageTransitionBuilder extends PageTransitionsBuilder {
+  const SmoothPageTransitionBuilder();
+
+  @override
+  Widget buildTransitions<T>(
+    PageRoute<T> route,
+    BuildContext context,
+    Animation<double> animation,
+    Animation<double> secondaryAnimation,
+    Widget child,
+  ) {
+    const begin = Offset(0.0, 0.04);
+    const end = Offset.zero;
+    const curve = Curves.easeInOutCubic;
+    final tween = Tween(begin: begin, end: end).chain(
+      CurveTween(curve: curve),
+    );
+    final fadeTween = Tween<double>(begin: 0.0, end: 1.0);
+    return SlideTransition(
+      position: animation.drive(tween),
+      child: FadeTransition(
+        opacity: animation.drive(fadeTween),
+        child: child,
+      ),
+    );
+  }
+}