prprompts-flutter-generator/.gemini/commands/refactoring/validate-flutter.md

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# Validate Flutter Code

You are validating Flutter code quality, security, performance, and compliance using the PRPROMPTS validation system.

## Overview

This command runs comprehensive validation checks on Flutter code and generates detailed reports with actionable recommendations.

## Steps

### 1. Gather Information

Ask the user:

1. **Flutter project path**: Where is the Flutter project?
   - Example: `./flutter-app`, `.`, `./mobile`
   - Validate that pubspec.yaml exists

2. **Validation strictness**: What level of strictness?
   - **Strict**: High standards (min score 85/100)
   - **Standard**: Balanced (min score 70/100) - recommended
   - **Lenient**: Permissive (min score 50/100)
   - **Security**: Focus on security issues only
   - **Performance**: Focus on performance issues only

3. **Report format**: How should results be displayed?
   - **Terminal**: Colorized output in terminal (default)
   - **HTML**: Interactive HTML report with charts
   - **JSON**: Machine-readable format
   - **Markdown**: Documentation-friendly format

4. **Auto-fix**: Should fixable issues be corrected automatically?

### 2. Run Validation

Execute the validation command:

```bash
prprompts validate <path> --config <preset> --format <format>
```

Example:
```bash
prprompts validate ./flutter-app --config strict --format html --fix
```

### 3. Show Results

Display validation results with clear formatting:

```
🔍 Validation Results

┌──────────────────────────────────────┐
│        Score: 85/100                 │
│        Grade: B                      │
└──────────────────────────────────────┘

📊 Detailed Scores:
┌────────────────┬───────┬───────┐
│ Category       │ Score │ Grade │
├────────────────┼───────┼───────┤
│ Code Quality   │ 90/100│   A   │
│ Security       │ 100/100│  A   │
│ Performance    │ 75/100│   C   │
│ Accessibility  │ 65/100│   D   │
│ Architecture   │ 88/100│   B   │
└────────────────┴───────┴───────┘

⚠️  Issues Summary:
  • Errors: 2
  • Warnings: 5
  • Info: 8
```

### 4. Highlight Critical Issues

Show top issues that need attention:

```
❌ Errors (2):
  1. [A11y] Missing Semantics label for interactive widget
     lib/features/auth/presentation/pages/login_page.dart:42
     💡 Auto-fixable with --fix

  2. [Security] Hardcoded API key detected
     lib/core/network/api_client.dart:15
     ⚠️  Manual fix required

⚠️  Warnings (5):
  1. [Perf] Missing const constructor - causes unnecessary rebuilds
     lib/features/auth/presentation/widgets/user_card.dart:15
     💡 Auto-fixable with --fix

  2. [Code] Unused import statement
     lib/features/dashboard/presentation/pages/home_page.dart:8
     💡 Auto-fixable with --fix
```

### 5. Provide Recommendations

Give actionable advice:

```
💡 Recommendations:
  1. Add Semantics labels to all interactive widgets for accessibility
  2. Move API keys to environment variables or secure storage
  3. Use const constructors wherever possible for performance
  4. Remove unused imports to reduce bundle size
  5. Add more unit tests (current coverage: 65%, target: 80%)
```

### 6. Show Report Location

If HTML/JSON/Markdown format was generated:

```
📄 Reports saved:
  • HTML: flutter-app/.prprompts/validation-report.html
  • JSON: flutter-app/.prprompts/validation-report.json

🌐 Opening HTML report in browser...
```

### 7. Offer Next Actions

Ask what the user wants to do:

```
What would you like to do next?
  1. Auto-fix safe issues (--fix flag)
  2. Review specific file in detail
  3. Re-run validation after fixes
  4. View detailed report in browser
  5. Export results for CI/CD
```

## Example Conversation

**Assistant**: I'll validate your Flutter code. Where is your Flutter project located?

**User**: ./flutter-app

**Assistant**: What validation strictness level would you like?
1. Strict (85/100 minimum)
2. Standard (70/100 minimum) - recommended
3. Lenient (50/100 minimum)
4. Security-focused
5. Performance-focused

**User**: 2

**Assistant**: How should I present the results?
1. Terminal (colorized output)
2. HTML (interactive report)
3. JSON (machine-readable)
4. Markdown (documentation)

**User**: HTML

**Assistant**: Should I auto-fix issues that can be corrected safely?

**User**: Yes

**Assistant**: Perfect! Running validation with these settings:
- Project: ./flutter-app
- Config: Standard (min score 70/100)
- Format: HTML
- Auto-fix: Enabled

```bash
prprompts validate ./flutter-app --config standard --format html --fix
```

[Show progress and results]

## Validation Categories

### 1. Code Quality (Weight: 25%)
- Code organization and structure
- Naming conventions
- Code complexity
- Documentation
- Dead code detection
- Import organization

### 2. Security (Weight: 30%)
- Hardcoded secrets detection
- Insecure network calls (HTTP vs HTTPS)
- SQL injection vulnerabilities
- XSS prevention
- Secure storage usage
- JWT validation patterns

### 3. Performance (Weight: 25%)
- Widget rebuild optimization
- Const constructors
- Lazy loading
- Memory leaks
- Expensive operations in build methods
- Image optimization

### 4. Accessibility (Weight: 10%)
- Semantics labels
- Color contrast
- Touch target sizes
- Screen reader support
- Keyboard navigation

### 5. Architecture (Weight: 10%)
- Clean Architecture compliance
- Dependency injection
- Separation of concerns
- SOLID principles
- Feature organization

## Auto-Fixable Issues

These issues can be automatically corrected with `--fix`:

1. **Missing const constructors**: Add `const` keyword
2. **Unused imports**: Remove import statements
3. **Trailing commas**: Add for better formatting
4. **Async without await**: Remove unnecessary `async`
5. **Prefer final**: Change `var` to `final` where appropriate

## Manual Fix Required

These issues need human review:

1. **Hardcoded secrets**: Move to environment variables
2. **Security vulnerabilities**: Implement proper security patterns
3. **Architecture violations**: Refactor code structure
4. **Complex logic**: Simplify or break down
5. **Missing tests**: Write unit/widget tests

## CI/CD Integration

For CI/CD pipelines, use:

```bash
prprompts validate ./flutter-app --ci --threshold 85
```

This will:
- Exit with code 0 if score ≥ threshold
- Exit with code 1 if score < threshold
- Output minimal, CI-friendly format

## Validation Presets

### Strict
- Minimum score: 85/100
- Fails on warnings
- Checks everything
- Best for production code

### Standard
- Minimum score: 70/100
- Warnings are allowed
- Balanced checks
- Good for active development

### Lenient
- Minimum score: 50/100
- Very permissive
- Basic checks only
- Good for prototypes

### Security
- Minimum score: 90/100 (security only)
- Focuses on security issues
- Fails on any security error
- Required for compliance

### Performance
- Minimum score: 75/100 (performance only)
- Focuses on performance issues
- Warns on slow widgets
- Good for optimization phase

## Common Issues & Solutions

### Issue: "Low accessibility score"
**Solution**: Add Semantics widgets:
```dart
Semantics(
  label: 'Login button',
  button: true,
  child: ElevatedButton(...),
)
```

### Issue: "Performance warnings about missing const"
**Solution**: Add const constructors:
```dart
const Text('Hello')  // Instead of: Text('Hello')
const SizedBox(height: 20)
```

### Issue: "Security warning about hardcoded API key"
**Solution**: Use environment variables:
```dart
// Instead of:
const apiKey = 'sk-1234567890';

// Use:
final apiKey = dotenv.env['API_KEY']!;
```

### Issue: "Architecture violation"
**Solution**: Follow Clean Architecture layers:
- Domain layer: Entities, repositories, use cases
- Data layer: Models, data sources, repository implementations
- Presentation layer: BLoC/Cubit, pages, widgets

## Report Features

### HTML Report Includes:
- Interactive charts and graphs
- Filterable issue list
- Code snippets with syntax highlighting
- Trend analysis (if run multiple times)
- Exportable to PDF

### JSON Report Includes:
- Machine-readable format
- All validation data
- Can be parsed by other tools
- Good for CI/CD integration

### Markdown Report Includes:
- Documentation-friendly
- Can be committed to repo
- Readable in GitHub/GitLab
- Good for PR descriptions

## Important Notes

- **Run regularly**: Validation should be part of your workflow
- **Fix incrementally**: Don't try to fix everything at once
- **Prioritize**: Fix errors before warnings
- **Track progress**: Save reports to see improvement over time
- **CI integration**: Add validation to your pipeline
- **Team standards**: Agree on minimum score threshold

## Commands Reference

```bash
# Basic validation
prprompts validate <path>

# With options
prprompts validate ./flutter-app --config strict --format html

# Auto-fix
prprompts validate ./flutter-app --fix

# CI mode
prprompts validate ./flutter-app --ci --threshold 85

# Save to file
prprompts validate ./flutter-app --format json --output report.json
```