TF-4009 Add AttachmentTextDetector class

2025-09-11 12:24:18 +07:00
parent 615ebd8cd6
commit 89a8247119
2 changed files with 480 additions and 0 deletions
@@ -0,0 +1,101 @@
+import 'package:tmail_ui_user/main/localizations/language_code_constants.dart';
+
+class AttachmentTextDetector {
+  const AttachmentTextDetector._();
+  // List of keywords by language
+  static final Map<String, List<String>> _keywordsByLang = {
+    LanguageCodeConstants.english: [
+      'attach',
+      'attachment',
+    ],
+    LanguageCodeConstants.french: [
+      'pièce jointe',
+      'fichier joint',
+      'document joint',
+      'pj',
+      'jointe',
+      'joint',
+    ],
+    LanguageCodeConstants.russian: [
+      'прикрепить',
+      'приложение',
+      'документ',
+      'файл',
+      'отчёт',
+      'вложение',
+    ],
+    LanguageCodeConstants.vietnamese: [
+      'đính kèm',
+      'tài liệu',
+      'tệp',
+      'báo cáo',
+      'file',
+      'attach',
+      'attachment',
+    ],
+  };
+
+  /// Detect if the text contains keywords suggesting there is an attachment.
+  /// [lang] is the language code (`en`, `fr`, `ru`, `vi`, ...).
+  static bool containsAttachmentKeyword(String text, {required String lang}) {
+    final lowerText = text.toLowerCase();
+    final keywords = _keywordsByLang[lang.toLowerCase()];
+    if (keywords == null) return false;
+
+    return keywords.any((k) => lowerText.contains(k.toLowerCase()));
+  }
+
+  /// Returns a list of matched keywords (if any) for the specified language
+  static List<String> matchedKeywords(String text, {required String lang}) {
+    final lowerText = text.toLowerCase();
+    final keywords = _keywordsByLang[lang.toLowerCase()];
+    if (keywords == null) return [];
+
+    return keywords
+        .where((k) => lowerText.contains(k.toLowerCase()))
+        .toList();
+  }
+
+  /// Detect if text contains keyword in any language
+  static bool containsAnyAttachmentKeyword(String text) {
+    final lowerText = text.toLowerCase();
+    for (final keywords in _keywordsByLang.values) {
+      if (keywords.any((k) => lowerText.contains(k.toLowerCase()))) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  /// Returns a map of languages with a list of matched keywords
+  static Map<String, List<String>> matchedKeywordsAll(String text) {
+    final result = <String, List<String>>{};
+    final lowerText = text.toLowerCase();
+
+    _keywordsByLang.forEach((lang, keywords) {
+      final matches =
+      keywords.where((k) => lowerText.contains(k.toLowerCase())).toList();
+      if (matches.isNotEmpty) {
+        result[lang] = matches;
+      }
+    });
+
+    return result;
+  }
+
+  /// Returns a list of matching keywords but removes duplicates
+  static List<String> matchedKeywordsUnique(String text) {
+    final lowerText = text.toLowerCase();
+    final result = <String>{};
+
+    _keywordsByLang.forEach((_, keywords) {
+      for (final k in keywords) {
+        if (lowerText.contains(k.toLowerCase())) {
+          result.add(k);
+        }
+      }
+    });
+
+    return result.toList();
+  }
+}