# 🔍 Advanced Search Library - Intelligent Search with Typo Correction

An advanced search library featuring typo correction, autocomplete, and flexible data structure support with optimized results ranking.

## ✨ Features

- 🚀 **High Performance**: Millisecond search response times
- 🔧 **Typo Correction**: "cofee" → "coffee", "phoen" → "phone" 
- 📝 **Autocomplete**: Smart suggestions after 3+ characters
- 📊 **Field-based Priority**: Intelligent scoring based on name, title, description, etc.
- 🔄 **Flexible Data Structure**: Compatible with any JSON data format
- 🎯 **Auto Field Detection**: Automatically analyzes and prioritizes data structure
- 🔍 **Advanced Filtering**: Price, brand, category-based filtering
- 💾 **Search History**: Search history management and analytics
- 📱 **Modern UI**: Responsive and user-friendly interface
- 🌐 **Universal**: Works in Node.js and browsers

## 🚀 Quick Start

```javascript
const AdvancedSearch = require('./src/AdvancedSearch');

// Create search engine (compatible with any data structure)
const search = new AdvancedSearch({
  // You can specify custom fields
  customFields: [
    { field: 'name', priority: 10, exact: 20 },
    { field: 'description', priority: 5, exact: 10 },
    { field: 'tags', priority: 7, exact: 14 }
  ]
});

// Add data - any structure works
search.addData([
  { id: 1, name: "Coffee Machine", category: "Appliances", price: 299, tags: ["coffee", "automatic"] },
  { id: 2, title: "Tea Cup Set", description: "Glass cup set", price: 89 },
  { id: 3, name: "Drum Set", category: "Music", price: 1299, keywords: ["instrument"] }
]);

// Search with field-based priority scoring
const results = search.search("cofee"); // Corrected to "coffee"
console.log(results);
```

## 📖 API Documentation

### Constructor Options

| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| `maxResults` | number | 50 | Maximum number of results |
| `minQueryLength` | number | 1 | Minimum query length for search |
| `typoThreshold` | number | 2 | Maximum edit distance for typo correction |
| `historyLimit` | number | 100 | Maximum search history entries |
| `customFields` | array | auto-detected | Custom field configuration |
| `autoDetectFields` | boolean | true | Automatically detect fields from data |

### Custom Field Configuration

```javascript
const search = new AdvancedSearch({
  customFields: [
    { field: 'name', priority: 15, exact: 25 },      // High priority for exact matches
    { field: 'title', priority: 15, exact: 25 },
    { field: 'description', priority: 8, exact: 12 },
    { field: 'tags', priority: 10, exact: 18 },
    { field: 'category', priority: 12, exact: 20 }
  ]
});
```

### Main Methods

#### `addData(items)`
Adds data to the search index. Accepts single item or array.

```javascript
search.addData([
  { id: 1, name: "Product 1", category: "Electronics" },
  { id: 2, title: "Product 2", type: "Books" }
]);
```

#### `search(query, filters = {})`
Performs search with optional filters.

```javascript
const results = search.search("laptop", {
  category: "Electronics",
  priceRange: [500, 2000],
  minRating: 4.0,
  sortBy: "price_asc"
});
```

#### `autocomplete(query)`
Returns autocomplete suggestions.

```javascript
const suggestions = search.autocomplete("lap"); // ["laptop", "lamp", ...]
```

### Filter Options

```javascript
const filters = {
  category: "Electronics",           // Category filter
  priceRange: [100, 500],           // Price range [min, max]
  brand: "Apple",                   // Brand filter
  minRating: 4.0,                   // Minimum rating
  sortBy: "price_asc"               // Sort options
};
```

### Sort Options

- `relevance` (default) - By search relevance
- `price_asc` / `price_desc` - By price
- `name_asc` / `name_desc` - By name
- `rating_desc` - By rating
- `newest` - By creation date

## 🎯 Advanced Usage

### Auto Field Detection

The library automatically detects and prioritizes fields in your data:

```javascript
const search = new AdvancedSearch();

// Different data structures work automatically
search.addData([
  { productName: "Phone", specs: "Smart device", manufacturer: "Apple" },
  { title: "Book", content: "Programming guide", author: "John Doe" },
  { name: "Shirt", details: "Cotton fabric", brand: "Nike" }
]);

// Library automatically detects: productName, title, name as high-priority fields
```

### Performance Optimization

```javascript
// Test with 1000+ items
const results = search.search("product"); 
// Average search time: ~10ms for 1000 items
```

### Multi-language Support

```javascript
const search = new AdvancedSearch({
  typoMap: {
    // Add your language-specific typo corrections
    'computer': 'computer',
    'compter': 'computer',
    'komputr': 'computer'
  }
});
```

## 📊 Examples

### Basic Usage
```bash
npm run example-basic
```

### Advanced Features
```bash
npm run example-advanced
```

### Flexible Data Structures
```bash
npm run example-flexible
```

### Web Demo
```bash
npm run demo
# Then open demo/index.html in your browser
```

## 🧪 Testing

```bash
npm test
```

**Test Results**: 16/16 tests passing ✅

## 📈 Performance Benchmarks

| Dataset Size | Search Time | Memory Usage |
|--------------|-------------|--------------|
| 100 items | 0.5ms | ~2MB |
| 1,000 items | 5ms | ~15MB |
| 10,000 items | 45ms | ~120MB |

## 🔧 Configuration Examples

### E-commerce Setup
```javascript
const ecommerceSearch = new AdvancedSearch({
  customFields: [
    { field: 'name', priority: 20, exact: 40 },
    { field: 'brand', priority: 15, exact: 30 },
    { field: 'category', priority: 12, exact: 24 },
    { field: 'description', priority: 8, exact: 16 },
    { field: 'tags', priority: 10, exact: 20 }
  ]
});
```

### Blog/Content Setup
```javascript
const blogSearch = new AdvancedSearch({
  customFields: [
    { field: 'title', priority: 25, exact: 50 },
    { field: 'summary', priority: 15, exact: 30 },
    { field: 'content', priority: 5, exact: 10 },
    { field: 'tags', priority: 12, exact: 24 },
    { field: 'author', priority: 8, exact: 16 }
  ]
});
```

## 🛠️ Browser Usage

```html
<script src="src/AdvancedSearch.js"></script>
<script>
  const search = new AdvancedSearch();
  search.addData(yourData);
  const results = search.search("query");
</script>
```

## 📄 License

MIT License - see [LICENSE](LICENSE) file for details.

## 👨‍💻 Developer

**Rıdvan Sevindik**
- GitHub: [@Ridvan0](https://github.com/Ridvan0)
- LinkedIn: [ridvansevindik](https://www.linkedin.com/in/ridvansevindik/)
- Email: sevindikbusiness@gmail.com

## 🔗 Links

- **GitHub Profile:** [https://github.com/Ridvan0](https://github.com/Ridvan0)
- **GitHub Repository:** [https://github.com/Ridvan0/turkish-search](https://github.com/Ridvan0/turkish-search)
- **Issues:** [Report a bug](https://github.com/Ridvan0/turkish-search/issues)
- **LinkedIn:** [Rıdvan Sevindik](https://www.linkedin.com/in/ridvansevindik/)

## 🌟 Contributing

1. Fork the repository
2. Create your feature branch (`git checkout -b feature/amazing-feature`)
3. Commit your changes (`git commit -m 'Add amazing feature'`)
4. Push to the branch (`git push origin feature/amazing-feature`)
5. Open a Pull Request

## 📝 Changelog

### v1.1.0
- ✅ Flexible data structure support
- ✅ Auto field detection
- ✅ Enhanced relevance scoring
- ✅ Multi-word search improvements
- ✅ Performance optimizations

### v1.0.0
- ✅ Initial release
- ✅ Basic search functionality
- ✅ Typo correction
- ✅ Autocomplete
- ✅ Filtering and sorting