cklauth 0.3.0

An opinionated Django app to provide user authentication.

# ckl-rest-auth
An opinionated Django app to provide user authentication.

## Installation

1. `pip install cklauth`
1. Add to your project's `INSTALLED_APPS`:
- `rest_framework`
- `rest_framework.authtoken`
- `corsheaders`
- `cklauth`
1. Include `ckl-rest-auth` urls to your project:
On `urls.py` add `path('', include('cklauth.urls'))`
1. Add settings according to the project requirements
- For Django's default user config:
```python
# Field used for authencation together with password (required)
'LOGIN_FIELD': 'email',

# Fields used on user serializer
'REGISTER_FIELDS': ('username', 'email'),

# From email used on password reset emails (optional)
'FROM_EMAIL': '[e-mail]',

# Google authentication settings (optional)
'GOOGLE': {
'CLIENT_ID': 'insert-your-key',
'CLIENT_SECRET': 'insert-your-key',
'REDIRECT_URI': 'insert-your-uri',
},

# Facebook authentication settings (optional)
'FACEBOOK': {
'CLIENT_ID': 'insert-your-key',
'CLIENT_SECRET': 'insert-your-key',
'REDIRECT_URI': 'insert-your-uri',
},
```
Note that the default `LOGIN_FIELD` is `email` and then you need to use the helper
authentication backend:
```python
AUTHENTICATION_BACKENDS = ['cklauth.auth.EmailOrUsernameModelBackend']
```

- For a custom user model, you can define additional options:
```python
CKL_REST_AUTH = {
# Field used for authencation together with password (required)
'LOGIN_FIELD': 'email',

# Override the default serializer used on registration and authentication responses (optional)
'USER_SERIALIZER': 'cklauth.api.v1.serializers.UserSerializer',

# Fields used on user serializer (not used if USER_SERIALIZER is defined above)
'REGISTER_FIELDS': ('username', 'email'),

# From email used on password reset emails (optional)
'FROM_EMAIL': '[e-mail]',

# Google authentication settings (optional)
'GOOGLE': {
'CLIENT_ID': 'insert-your-key',
'CLIENT_SECRET': 'insert-your-key',
'REDIRECT_URI': 'insert-your-uri',
# Define a callable that receives the social user payload and returns the value on of the
# User model USERNAME_FIELD (username, for instance). The default function already checks
# if the value is in use. Set it to `None`, if you don't want to generate a USERNAME_FIELD.
'AUTH_FIELD_GENERATOR': 'cklauth.utils.auth_field_generator',
# How to map the social user payload to the User model fields. It accepts a callable that
# receives the whole social user payload to map more complex data.
'USER_INFO_MAPPING': {
'full_name': 'full_name': lambda info: '{} {}'.format(
info.get('given_name'),
info.get('family_name')
),
'email': 'email',
},
},

# Facebook authentication settings (optional)
'FACEBOOK': {
'CLIENT_ID': 'insert-your-key',
'CLIENT_SECRET': 'insert-your-key',
'REDIRECT_URI': 'insert-your-uri',
'AUTH_FIELD_GENERATOR': 'cklauth.utils.auth_field_generator',
'USER_INFO_MAPPING': {
'full_name': 'full_name': lambda info: '{} {}'.format(
info.get('first_name'),
info.get('last_name')
),
'email': 'email',
},
},
}
```

## Basic Endpoints

`POST /api/v1/login`
Body (depends on LOGIN_FIELD)
```json
{
"email": "[e-mail]",
"password": "secret"
}
```
Response (depends on REGISTER_FIELDS and USER_SERIALIZER) - 200 OK
```json
{
"token": "supersecret",
"user": {
"id": 1,
"email": "[e-mail]",
"first_name": "Example",
"last_name": "Example"
}
}
```
**Note:** the user payload may vary according to specified REGISTER_FIELDS and USER_SERIALIZER.

`POST /api/v1/register`
Body (depends on REGISTER_FIELDS and USER_SERIALIZER -- always has a password)
```json
{
"email": "[e-mail]",
"password": "secret",
"first_name": "Example",
"last_name": "Example"
}
```
Response (depends on REGISTER_FIELDS and USER_SERIALIZER) - 201 CREATED
```json
{
"token": "supersecret",
"user": {
"id": 1,
"email": "[e-mail]",
"first_name": "Example",
"last_name": "Example"
}
}
```
**Note:** the user payload may vary according to specified REGISTER_FIELDS and USER_SERIALIZER.

`POST /api/v1/password-reset/`
Body
```json
{
"email": "[e-mail]"
}
```
Response - 200 OK
```json
{
"email": "[e-mail]"
}
```
Note: it always returns success, even if the provided email is not registered.


## Social Endpoints

`GET /api/v1/social/google`
`GET /api/v1/social/facebook`
**Note:** this should not be XHR request, the user will be redirected to consent screen. After
consent, the user is redirected to platform REDIRECT_URI added on settings, where a code is
extracted from the URL hash.

`POST /api/v1/social/google`
`POST /api/v1/social/facebook`
Body
```json
{
"code": "<code from previous step>",
"user_extra_fields": {
"role": "admin"
}
}
```
**Note:** You can pass additional user fields in the `user_extra_fields` key, as long as they are
part of the main `REGISTER_FIELDS` list.

Response - 200 OK
```json
{
"token": "supersecret",
"user": {
"id": 1,
"email": "[e-mail]",
"first_name": "Example",
"last_name": "Example"
}
}
```
**Note:** the user payload may vary according to specified REGISTER_FIELDS and USER_SERIALIZER.

## Contributing

The library code is under `cklauth` folder and tests are in a test project under `testapp`
folder.

### Running tests:

* Ensure that you have the app requirements installed
```
pip install -r requirements.txt
pip install -e cklauth
```

* Run the tests
```
python -m pytest test_default_user
python -m pytest test_custom_user
```