# Input Component Design & Architecture
**Component**: Input  
**Priority**: HIGH  
**Status**: Needs File Size Refactoring & Test Enhancement

## 📊 Current State Analysis

### **File Structure**
```
packages/leptos/input/src/
├── default.rs (104 lines) ✅
├── leptos_v0_8_compatibility_tests.rs (127 lines) ✅
├── lib.rs (39 lines) ✅
├── new_york_tests.rs (365 lines) ❌ VIOLATION
├── new_york.rs (45 lines) ✅
├── test_helpers.rs (52 lines) ✅
└── tests_real.rs (290 lines) ✅
```

### **Test Coverage Status**
- **Total Tests**: Mixed quality ⚠️
- **Coverage Quality**: Needs improvement ⚠️
- **Test Organization**: Basic structure ✅

### **File Size Violations**
| File | Lines | Limit | Status |
|------|-------|-------|---------|
| `new_york_tests.rs` | 365 | 300 | ❌ **VIOLATION** |

---

## 🎯 Design Goals

### **Primary Objectives**
1. **File Size Compliance**: All files under 300 lines
2. **Test Enhancement**: Comprehensive test coverage
3. **Validation System**: Robust input validation
4. **Accessibility**: Full ARIA and keyboard support

### **Secondary Objectives**
1. **Documentation**: Comprehensive component documentation
2. **Theming**: Support for multiple design systems
3. **Integration**: Seamless integration with form components
4. **Performance**: Optimized for production use

---

## 🏗️ Proposed Architecture

### **Refactored File Structure**
```
packages/leptos/input/src/
├── lib.rs (50 lines) ✅
├── default.rs (104 lines) ✅
├── new_york.rs (45 lines) ✅
├── signal_managed.rs (200 lines) ✅
├── validation/
│   ├── mod.rs (20 lines) ✅
│   ├── types.rs (200 lines) ✅
│   ├── rules.rs (200 lines) ✅
│   └── validator.rs (200 lines) ✅
├── tests/
│   ├── mod.rs (20 lines) ✅
│   ├── basic_rendering_tests.rs (250 lines) ✅
│   ├── validation_tests.rs (250 lines) ✅
│   ├── accessibility_tests.rs (250 lines) ✅
│   ├── integration_tests.rs (250 lines) ✅
│   └── performance_tests.rs (250 lines) ✅
└── test_helpers.rs (52 lines) ✅
```

---

## 🛠️ Implementation Plan

### **Phase 1: File Size Refactoring (Week 1)**
**Priority: CRITICAL**

#### **Step 1: Split Large Test File**
- [ ] Split `new_york_tests.rs` (365 lines) → 2 modules
- [ ] Create focused test modules
- [ ] Maintain test coverage

#### **Step 2: Create Validation System**
- [ ] Create `validation/` directory
- [ ] Implement validation types
- [ ] Create validation rules
- [ ] Implement validator logic

#### **Step 3: Create Test Module Structure**
- [ ] Create `tests/` directory
- [ ] Implement focused test modules
- [ ] Organize tests by functionality
- [ ] Maintain test coverage

### **Phase 2: Test Enhancement (Week 2)**
**Priority: HIGH**

#### **Step 1: Validation Testing**
- [ ] Implement comprehensive validation tests
- [ ] Add error handling tests
- [ ] Create edge case tests
- [ ] Test validation rules

#### **Step 2: Accessibility Testing**
- [ ] Implement comprehensive ARIA tests
- [ ] Add keyboard navigation tests
- [ ] Create screen reader compatibility tests
- [ ] Test focus management

#### **Step 3: Integration Testing**
- [ ] Test with form components
- [ ] Create complex usage scenarios
- [ ] Test validation integration
- [ ] Validate API contracts

---

## 📊 Success Metrics

### **File Size Compliance**
- **Target**: All files under 300 lines
- **Current**: 1 violation
- **Goal**: 0 violations

### **Test Coverage**
- **Current**: Mixed quality
- **Target**: 80+ tests
- **Goal**: 100% coverage

### **Validation System**
- **Current**: Basic validation
- **Target**: Comprehensive validation
- **Goal**: Production-ready validation

### **Accessibility Compliance**
- **WCAG 2.1 AA**: 100% compliance
- **Keyboard Navigation**: Full support
- **Screen Reader**: Full compatibility

---

*Input Component Design created: September 20, 2025*  
*Next review: October 20, 2025*