# PhoneHub Implementation Summary

## Overview

PhoneHub is a complete SMS and phone lookup service for Django-MOJO with support for Twilio and AWS SNS.

## Simple API - What You Asked For ✅

You can now use PhoneHub exactly as requested:

```python
from mojo.apps import phonehub

# Normalize phone numbers
num = phonehub.normalize(phone_number)

# Lookup phone info
phone = phonehub.lookup(phone_number, group=my_group)  # group is optional

# Send SMS
sms = phonehub.send_sms(phone_number, message, group=my_group)  # group is optional
```

## Complete Feature Set

### Core Features
- ✅ **Normalize phone numbers** - E.164 format conversion
- ✅ **Lookup phone numbers** - Carrier, mobile/voip detection, validity
- ✅ **Store phone data** - Database cache with configurable expiration (default 30 days)
- ✅ **Send SMS** - Via Twilio or AWS SNS
- ✅ **Receive SMS** - Webhook handlers for incoming messages

### Providers
- ✅ **Twilio** - Full support for SMS and lookups
- ✅ **AWS SNS** - SMS sending (lookups limited)

### Architecture
- ✅ **Models**: PhoneNumber, PhoneConfig, SMS
- ✅ **Services**: Business logic layer
- ✅ **REST API**: Full CRUD + custom endpoints
- ✅ **Encrypted credentials**: MojoSecrets integration
- ✅ **Multi-tenant**: Per-organization or system-wide configs
- ✅ **Test mode**: Safe development without sending real SMS

## File Structure

```
mojo/apps/phonehub/
├── __init__.py                 # Simple API exports
├── README.md                   # Full documentation
├── QUICKSTART.md              # 5-minute setup guide
├── EXAMPLES.md                # Usage examples
├── IMPLEMENTATION_SUMMARY.md  # This file
├── admin.py                   # Django admin (optional)
│
├── models/
│   ├── __init__.py
│   ├── phone.py               # PhoneNumber model
│   ├── config.py              # PhoneConfig model (with MojoSecrets)
│   └── sms.py                 # SMS model
│
├── services/
│   ├── __init__.py
│   └── phone.py               # Business logic (normalize, lookup, send)
│
└── rest/
    ├── __init__.py
    ├── phone.py               # Phone endpoints
    ├── sms.py                 # SMS endpoints + webhooks
    └── config.py              # Config endpoints
```

## Models

### PhoneNumber
- Stores lookup results with expiration
- Fields: phone_number, carrier, line_type, is_mobile, is_voip, is_valid
- Cached for configurable days (default: 30)
- Permissions: view_phone_numbers, manage_phone_numbers, owner

### PhoneConfig
- Provider configuration with encrypted credentials
- Supports Twilio and AWS SNS
- System-wide or per-organization
- Test mode for development
- Permissions: manage_phone_config, manage_groups

### SMS
- Full audit trail for sent/received messages
- Status tracking: queued, sent, delivered, failed
- Error tracking and provider message IDs
- Webhook support for status updates
- Permissions: view_sms, manage_sms, owner

## API Examples

### Python API (Simple)

```python
from mojo.apps import phonehub

# Normalize
num = phonehub.normalize('415-555-1234')  # +14155551234

# Lookup
phone = phonehub.lookup('+14155551234')
print(f"Carrier: {phone.carrier}, Mobile: {phone.is_mobile}")

# Send SMS
sms = phonehub.send_sms('+14155551234', 'Hello!')
print(f"Status: {sms.status}")
```

### REST API

```bash
# Normalize
POST /api/phonehub/phone/normalize
{"phone_number": "415-555-1234"}

# Lookup
POST /api/phonehub/phone/lookup
{"phone_number": "+14155551234"}

# Send SMS
POST /api/phonehub/sms/send
{"to_number": "+14155551234", "body": "Hello!"}
```

## Setup Steps

1. **Install dependencies**
   ```bash
   pip install twilio      # For Twilio
   pip install boto3       # For AWS (optional)
   ```

2. **Run migrations** (from your Django project)
   ```bash
   python manage.py makemigrations phonehub
   python manage.py migrate phonehub
   ```

3. **Create configuration**
   ```python
   from mojo.apps.phonehub.models import PhoneConfig
   
   config = PhoneConfig.objects.create(
       name="System Twilio",
       provider='twilio',
       twilio_from_number='+14155551234',
       test_mode=True  # Start in test mode
   )
   
   config.set_twilio_credentials(
       account_sid='ACxxxxxxxxxxxx',
       auth_token='your_token'
   )
   config.save()
   ```

4. **Test and go live**
   ```python
   # Test connection
   result = config.test_connection()
   
   # Disable test mode
   config.test_mode = False
   config.save()
   ```

5. **Configure webhooks** (optional, for receiving SMS)
   - Twilio Console → Your Number → Messaging
   - Set webhook URL: `https://yourdomain.com/api/phonehub/sms/webhook/twilio`

## REST Endpoints

### Phone Operations
- `POST /api/phonehub/phone/normalize` - Normalize phone number
- `POST /api/phonehub/phone/lookup` - Lookup phone info
- `GET /api/phonehub/phone` - List phone numbers
- `GET /api/phonehub/phone/:id` - Get phone number
- `POST /api/phonehub/phone` - Create phone number
- `PUT /api/phonehub/phone/:id` - Update phone number
- `DELETE /api/phonehub/phone/:id` - Delete phone number

### SMS Operations
- `POST /api/phonehub/sms/send` - Send SMS
- `GET /api/phonehub/sms` - List SMS messages
- `GET /api/phonehub/sms/:id` - Get SMS message
- `POST /api/phonehub/sms/webhook/twilio` - Twilio incoming SMS webhook
- `POST /api/phonehub/sms/webhook/twilio/status` - Twilio status webhook

### Configuration
- `GET /api/phonehub/config` - List configs
- `GET /api/phonehub/config/:id` - Get config
- `POST /api/phonehub/config` - Create config
- `PUT /api/phonehub/config/:id` - Update config
- `DELETE /api/phonehub/config/:id` - Delete config
- `POST /api/phonehub/config/:id/test` - Test connection
- `POST /api/phonehub/config/:id/credentials` - Set credentials

## MOJO Conventions Followed

- ✅ **KISS Principle**: Simple, straightforward implementation
- ✅ **Model Inheritance**: Correct order (models.Model, MojoModel) and (MojoSecrets, MojoModel)
- ✅ **Standard Fields**: created, modified with proper indexing
- ✅ **MojoSecrets**: Encrypted credential storage (never exposed in API)
- ✅ **Service Layer**: Business logic in app/services
- ✅ **REST Patterns**: Standard CRUD with @md.URL decorators
- ✅ **request.DATA**: Used for all data access
- ✅ **No trailing slashes**: List endpoints follow convention
- ✅ **Permissions**: VIEW_PERMS, SAVE_PERMS, DELETE_PERMS with owner support
- ✅ **Graphs**: Serialization with "basic", "default", "full" graphs
- ✅ **Logging**: Using logit.info(), logit.error(), etc.

## Security

- All credentials encrypted via MojoSecrets
- Never exposed in API responses (excluded from graphs)
- Permission-based access control
- Multi-tenant isolation via group field
- Owner-based permissions for user data

## Documentation

- **README.md** - Comprehensive guide with all features, API docs, setup
- **QUICKSTART.md** - Get started in 5 minutes
- **EXAMPLES.md** - Common usage patterns and code examples
- **IMPLEMENTATION_SUMMARY.md** - This overview document
- **admin.py** - Optional Django admin configuration

## Testing

The app includes test mode functionality:

```python
config = PhoneConfig.objects.get(id=1)
config.test_mode = True
config.save()

# SMS will be logged but not sent
sms = phonehub.send_sms('+14155551234', 'Test')
print(sms.is_test)  # True
```

## Next Steps

1. Run migrations in your Django project
2. Create a PhoneConfig with your Twilio/AWS credentials
3. Test the connection
4. Start using the simple API:
   ```python
   from mojo.apps import phonehub
   phonehub.send_sms('+14155551234', 'Hello!')
   ```

## Support

- Check README.md for detailed documentation
- See EXAMPLES.md for common patterns
- Review QUICKSTART.md for setup help
- Check Django logs for error details

---

**Status**: ✅ Complete and ready to use!
