multi_language_search_engine 1.0.1

A powerful Flutter plugin for multi-language search with Arabic and English support, fuzzy matching, and typo tolerance.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:multi_language_search_engine/multi_language_search_engine.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Multi-Language Search Engine Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        useMaterial3: true,
      ),
      home: const SearchDemoPage(),
    );
  }
}

class SearchDemoPage extends StatefulWidget {
  const SearchDemoPage({super.key});

  @override
  State<SearchDemoPage> createState() => _SearchDemoPageState();
}

class _SearchDemoPageState extends State<SearchDemoPage> {
  late SearchEngine _englishEngine;
  late SearchEngine _arabicEngine;
  final TextEditingController _searchController = TextEditingController();
  List<Map<String, dynamic>> _searchResults = [];
  bool _isEnglish = true;

  // Sample data
  final List<Map<String, dynamic>> _englishData = [
    {'id': 1, 'name': 'John Doe', 'description': 'Software Engineer', 'department': 'Engineering'},
    {'id': 2, 'name': 'Jane Smith', 'description': 'Product Manager', 'department': 'Product'},
    {'id': 3, 'name': 'Bob Johnson', 'description': 'Designer', 'department': 'Design'},
    {'id': 4, 'name': 'Alice Brown', 'description': 'Data Scientist', 'department': 'Data'},
    {'id': 5, 'name': 'Charlie Wilson', 'description': 'DevOps Engineer', 'department': 'Engineering'},
    {'id': 6, 'name': 'Diana Davis', 'description': 'Marketing Specialist', 'department': 'Marketing'},
    {'id': 7, 'name': 'Edward Miller', 'description': 'Sales Representative', 'department': 'Sales'},
  ];

  final List<Map<String, dynamic>> _arabicData = [
    {'id': 1, 'name': 'أحمد محمد', 'description': 'مطور برمجيات', 'department': 'الهندسة'},
    {'id': 2, 'name': 'فاطمة علي', 'description': 'مدير منتج', 'department': 'المنتج'},
    {'id': 3, 'name': 'محمد حسن', 'description': 'مصمم', 'department': 'التصميم'},
    {'id': 4, 'name': 'سارة أحمد', 'description': 'عالم بيانات', 'department': 'البيانات'},
    {'id': 5, 'name': 'علي محمود', 'description': 'مهندس ديف أوبس', 'department': 'الهندسة'},
    {'id': 6, 'name': 'لينا يوسف', 'description': 'أخصائي تسويق', 'department': 'التسويق'},
    {'id': 7, 'name': 'كريم عبدالله', 'description': 'ممثل مبيعات', 'department': 'المبيعات'},
  ];

  @override
  void initState() {
    super.initState();
    _initializeSearchEngines();
  }

  void _initializeSearchEngines() {
    _englishEngine = createSearchEngine(
      data: _englishData,
      languageCode: 'en',
    );

    _arabicEngine = createSearchEngine(
      data: _arabicData,
      languageCode: 'ar',
    );
  }

  void _performSearch(String query) {
    final engine = _isEnglish ? _englishEngine : _arabicEngine;
    final results = engine.search(query);
    setState(() {
      _searchResults = results;
    });
  }

  void _toggleLanguage() {
    setState(() {
      _isEnglish = !_isEnglish;
      _searchController.clear();
      _searchResults = [];
    });
  }

  @override
  Widget build(BuildContext context) {
    final currentData = _isEnglish ? _englishData : _arabicData;

    return Scaffold(
      appBar: AppBar(
        title: Text(_isEnglish ? 'English Search Demo' : 'Arabic Search Demo'),
        actions: [
          IconButton(
            icon: Icon(_isEnglish ? Icons.language : Icons.language_outlined),
            onPressed: _toggleLanguage,
            tooltip: 'Switch Language',
          ),
        ],
      ),
      body: Column(
        children: [
          Padding(
            padding: const EdgeInsets.all(16.0),
            child: TextField(
              controller: _searchController,
              decoration: InputDecoration(
                labelText: _isEnglish ? 'Search employees...' : 'البحث عن الموظفين...',
                hintText: _isEnglish
                    ? 'Try: software, manager, design...'
                    : 'جرب: مطور، مدير، تصميم...',
                border: const OutlineInputBorder(),
                suffixIcon: IconButton(
                  icon: const Icon(Icons.search),
                  onPressed: () => _performSearch(_searchController.text),
                ),
              ),
              onChanged: _performSearch,
              textDirection: _isEnglish ? TextDirection.ltr : TextDirection.rtl,
            ),
          ),
          Expanded(
            child: _searchResults.isEmpty && _searchController.text.isEmpty
                ? _buildDataPreview(currentData)
                : _buildSearchResults(),
          ),
        ],
      ),
    );
  }

  Widget _buildDataPreview(List<Map<String, dynamic>> data) {
    return ListView.builder(
      itemCount: data.length,
      itemBuilder: (context, index) {
        final item = data[index];
        return Card(
          margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
          child: ListTile(
            title: Text(item['name']),
            subtitle: Text('${item['description']} • ${item['department']}'),
            leading: CircleAvatar(
              child: Text('${item['id']}'),
            ),
          ),
        );
      },
    );
  }

  Widget _buildSearchResults() {
    if (_searchResults.isEmpty) {
      return Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Icon(
              Icons.search_off,
              size: 64,
              color: Colors.grey,
            ),
            const SizedBox(height: 16),
            Text(
              _isEnglish ? 'No results found' : 'لم يتم العثور على نتائج',
              style: Theme.of(context).textTheme.headlineSmall,
            ),
            const SizedBox(height: 8),
            Text(
              _isEnglish
                  ? 'Try a different search term'
                  : 'جرب مصطلح بحث مختلف',
              style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                color: Colors.grey,
              ),
            ),
          ],
        ),
      );
    }

    return ListView.builder(
      itemCount: _searchResults.length,
      itemBuilder: (context, index) {
        final item = _searchResults[index];
        return Card(
          margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
          child: ListTile(
            title: Text(item['name']),
            subtitle: Text('${item['description']} • ${item['department']}'),
            leading: CircleAvatar(
              child: Text('${item['id']}'),
            ),
          ),
        );
      },
    );
  }

  @override
  void dispose() {
    _searchController.dispose();
    super.dispose();
  }
}