# Backend Implementation - Quick Reference

## Files to Create

1. **app/Controllers/User/UserController.php**
   - Copy from: `code-templates/UserController.php`
   - Creates: Full CRUD for users

2. **app/Models/User/UserModel.php**
   - Copy from: `code-templates/UserModel.php`
   - Creates: User database model

## Files to Modify

3. **app/Controllers/Specimen/SpecimenController.php**
   - Add method from: `code-templates/SpecimenController-delete-method.php`
   - Adds: Delete specimen functionality

4. **app/Config/Routes.php**
   - Add routes from: `code-templates/Routes-additions.php`
   - Adds: User routes + Specimen delete route

## Database Migration

Run this SQL if `users` table doesn't exist:

```sql
CREATE TABLE IF NOT EXISTS users (
    UserID INT AUTO_INCREMENT PRIMARY KEY,
    Username VARCHAR(50) NOT NULL UNIQUE,
    Email VARCHAR(100) NOT NULL,
    Name VARCHAR(100),
    Role VARCHAR(50),
    Department VARCHAR(100),
    IsActive BOOLEAN DEFAULT TRUE,
    CreatedAt TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    UpdatedAt TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    DelDate TIMESTAMP NULL,
    INDEX idx_username (Username),
    INDEX idx_email (Email)
);
```

## Testing Commands

```bash
# Specimen Delete
curl -X DELETE http://localhost:8000/api/specimen/1

# Users API
curl http://localhost:8000/api/users
curl http://localhost:8000/api/users/1
curl -X POST http://localhost:8000/api/users \
  -H "Content-Type: application/json" \
  -d '{"Username":"test","Email":"test@test.com","Name":"Test User"}'
curl -X PATCH http://localhost:8000/api/users \
  -H "Content-Type: application/json" \
  -d '{"UserID":1,"Name":"Updated"}'
curl -X DELETE http://localhost:8000/api/users/1
```

## Timeline Estimate

- **Specimen Delete**: 15 minutes (just add route + method)
- **User API**: 1-2 hours (new controller + model + routes)
- **Testing**: 30 minutes

**Total: ~2-3 hours**

## Questions?

See the detailed specs:
- `specimen-delete.md` - Full specimen delete specification
- `user-api.md` - Complete user API specification with examples