# OhMyAPI

> Think: Micro-Django, but API-first, less clunky and 100% async.

OhMyAPI is a Django-flavored web-application scaffolding framework and management layer.
Built around FastAPI and TortoiseORM, it is 100% async.

It is ***blazingly fast***, ***fun*** to use and comes with ***batteries included***!

**Features**

- Django-like project-layout and -structure
- Django-like prject-level settings.py
- Django-like models via TortoiseORM
- Django-like `Model.Meta` class for model configuration
- Easily convert your query results to `pydantic` models via `Model.Schema`
- Django-like migrations (makemigrations & migrate) via Aerich
- Django-like CLI tooling (`startproject`, `startapp`, `shell`, `serve`, etc)
- Various optional builtin apps you can hook into your project
- Highly configurable and customizable
- 100% async

---

## Getting started

**Creating a Project**

```
pip install ohmyapi
ohmyapi startproject myproject
cd myproject
```

This will create the following directory structure:

```
myproject/
  - pyproject.toml
  - README.md
  - settings.py
```

Run your project with:

```
ohmyapi serve
```

In your browser go to:
- http://localhost:8000/docs

**Creating an App**

Create a new app by:

```
ohmyapi startapp myapp
```

This will create the following directory structure:

```
myproject/
  - myapp/
    - __init__.py
    - models.py
    - routes.py
  - pyproject.toml
  - README.md
  - settings.py
```

Add 'myapp' to your `INSTALLED_APPS` in `settings.py`.

### Models

Write your first model in `myapp/models.py`:

```python
from ohmyapi.db import Model, field


class Person(Model):
    id: int = field.IntField(min=1, pk=True)
    name: str = field.CharField(min_length=1, max_length=255)
    username: str = field.CharField(min_length=1, max_length=255, unique=True)
    age: int = field.IntField(min=0)
```

### API Routes

Next, create your endpoints in `myapp/routes.py`:

```python
from ohmyapi.router import APIRouter, HTTPException
from ohmyapi.db.exceptions import DoesNotExist

from .models import Person

router = APIRouter(prefix="/myapp")


@router.get("/")
async def list():
    queryset = await Person.all()
    return await Person.Schema.many.from_queryset(queryset)


@router.get("/:id")
async def get(id: int):
    try:
        queryset = await Person.get(pk=id)
        return await Person.Schema.one(queryset)
    except DoesNotExist:
        raise HTTPException(status_code=404, detail="item not found")

...
```

## Migrations

Before we can run the app, we need to create and initialize the database.

Similar to Django, first run:

```
ohmyapi makemigrations [ <app> ]  # no app means all INSTALLED_APPS
```

This will create a `migrations/` folder in you project root.

```
myproject/
  - myapp/
    - __init__.py
    - models.py
    - routes.py
  - migrations/
    - myapp/
  - pyproject.toml
  - README.md
  - settings.py
```

Apply your migrations via:

```
ohmyapi migrate [ <app> ]  # no app means all INSTALLED_APPS
```

Run your project:

```
ohmyapi serve
```

## Shell

Similar to Django, you can attach to an interactive shell with your project already loaded inside.

```
ohmyapi shell
```

## Authentication

A builtin auth app is available.

Simply add `ohmyapi_auth` to your INSTALLED_APPS and define a JWT_SECRET in your `settings.py`.
Remember to `makemigrations` and `migrate` for the necessary tables to be created in the database.

`settings.py`:

```
INSTALLED_APPS = [
    'ohmyapi_auth',
    ...
]

JWT_SECRET = "t0ps3cr3t"
```

After restarting your project you will have access to the `ohmyapi_auth` app.
It comes with a `User` and `Group` model, as well as endpoints for JWT auth.

Create a super-user:

```
ohmyapi createsuperuser
```

## Permissions

### API-Level

Use FastAPI's `Depends` pattern to implement API-level access-control.


In your `routes.py`:

```python
from ohmyapi.router import APIRouter, Depends

from ohmyapi_auth.models import User
from ohmyapi_auth.permissions import require_authenticated

router = APIRouter(prefix="/myapp")


@router.get("/")
def must_be_authenticated(user: User = Depends(require_authenticated)):
    return {"user": user}
```