step

big
2026-08-08 17:51:14 +03:00 · 2026-06-28 02:19:57 +03:00
parent ed45748c95
commit bc51609f85
26 changed files with 1757 additions and 1525 deletions
@@ -0,0 +1,107 @@
+import 'dart:convert';
+import 'package:http/http.dart' as http;
+
+enum TranslateDirection { ruToEn, enToRu }
+
+class TranslationResult {
+  final String text;
+  final bool fromCache;
+
+  const TranslationResult(this.text, {this.fromCache = false});
+}
+
+class TranslationService {
+  static const Map<String, String> _ruToEn = {
+    'еда': 'Food',
+    'продукты': 'Groceries',
+    'транспорт': 'Transport',
+    'покупки': 'Shopping',
+    'здоровье': 'Health',
+    'развлечения': 'Entertainment',
+    'жильё': 'Housing',
+    'жилье': 'Housing',
+    'аренда': 'Rent',
+    'образование': 'Education',
+    'путешествия': 'Travel',
+    'зарплата': 'Salary',
+    'фриланс': 'Freelance',
+    'инвестиции': 'Investment',
+    'подарок': 'Gift',
+    'подарки': 'Gifts',
+    'возврат': 'Refund',
+    'другое': 'Other',
+    'коммунальные': 'Utilities',
+    'одежда': 'Clothing',
+    'спорт': 'Sports',
+    'красота': 'Beauty',
+    'питомцы': 'Pets',
+    'животные': 'Pets',
+    'бизнес': 'Business',
+    'накопления': 'Savings',
+    'кафе': 'Cafe',
+    'кофе': 'Coffee',
+    'ресторан': 'Restaurant',
+    'связь': 'Communication',
+    'интернет': 'Internet',
+    'налоги': 'Taxes',
+    'страховка': 'Insurance',
+    'медицина': 'Medicine',
+    'дети': 'Children',
+    'хобби': 'Hobby',
+    'музыка': 'Music',
+    'игры': 'Games',
+    'книги': 'Books',
+    'топливо': 'Fuel',
+    'такси': 'Taxi',
+  };
+
+  static final Map<String, String> _enToRu = {
+    for (final entry in _ruToEn.entries) entry.value.toLowerCase(): entry.key,
+  };
+
+  String? _dictionaryLookup(String input, TranslateDirection direction) {
+    final normalized = input.trim().toLowerCase();
+    if (normalized.isEmpty) return null;
+    final map = direction == TranslateDirection.ruToEn ? _ruToEn : _enToRu;
+    final hit = map[normalized];
+    if (hit == null) return null;
+    return _capitalize(hit);
+  }
+
+  Future<TranslationResult?> translate(
+    String input,
+    TranslateDirection direction,
+  ) async {
+    final trimmed = input.trim();
+    if (trimmed.isEmpty) return null;
+
+    final cached = _dictionaryLookup(trimmed, direction);
+    if (cached != null) {
+      return TranslationResult(cached, fromCache: true);
+    }
+
+    final pair = direction == TranslateDirection.ruToEn ? 'ru|en' : 'en|ru';
+    final uri = Uri.parse(
+      'https://api.mymemory.translated.net/get'
+      '?q=${Uri.encodeQueryComponent(trimmed)}&langpair=$pair',
+    );
+
+    try {
+      final response =
+          await http.get(uri).timeout(const Duration(seconds: 8));
+      if (response.statusCode != 200) return null;
+      final decoded = jsonDecode(response.body) as Map<String, dynamic>;
+      final data = decoded['responseData'] as Map<String, dynamic>?;
+      final translated = data?['translatedText'] as String?;
+      if (translated == null || translated.trim().isEmpty) return null;
+      return TranslationResult(_capitalize(translated.trim()));
+    } catch (_) {
+      return null;
+    }
+  }
+
+  String _capitalize(String value) {
+    if (value.isEmpty) return value;
+    return value[0].toUpperCase() + value.substring(1);
+  }
+}