Metadata-Version: 2.1
Name: apiwrappers
Version: 0.1.0
Summary: apiwrappers is a library for building API clients that work both with regular and async code
License: MIT
Keywords: api,wrapper,http,client
Author: Aleksei Maslakov
Author-email: lesha.maslakov@gmail.com
Requires-Python: >=3.7,<4.0
Classifier: Development Status :: 3 - Alpha
Classifier: License :: OSI Approved :: MIT License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Typing :: Typed
Provides-Extra: aiohttp
Provides-Extra: requests
Requires-Dist: aiohttp (>=3.6.2,<4.0.0); extra == "aiohttp"
Requires-Dist: requests (>=2.22.0,<3.0.0); extra == "requests"
Requires-Dist: typing-extensions (>=3.7.4,<4.0.0); python_version >= "3.7" and python_version < "3.8"
Project-URL: Documentation, https://apiwrappers.readthedocs.io/
Description-Content-Type: text/x-rst

========
Overview
========

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----------

*apiwrappers* is a library for building API clients
that work both with regular and async code.

Features
========

- **DRY** - support both regular and async code with one implementation
- **Flexible** - middleware mechanism to customize request/response
- **Typed** - library is fully typed and it's relatively easy
  to get fully typed wrappers
- **Modern** - decode JSON with no effort using dataclasses and type annotations
- **Unified interface** - work with different python HTTP client libraries
  in the same way. Currently supported:

    - `requests <https://requests.readthedocs.io/en/master/>`_
    - `aiohttp <https://docs.aiohttp.org/en/stable/client.html>`_

Installation
============

.. code-block:: bash

    pip install apiwrappers[requests,aiohttp]

*Note: extras are optional and mainly needed for the final
user of your future API wrapper*

QuickStart
==========

Making request is rather straightforward:

.. code-block:: python

    from dataclasses import dataclass
    from typing import List

    from apiwrappers import Request, fetch, make_driver

    @dataclass
    class Repo:
        name: str

    url = "https://api.github.com/users/unmade/repos"
    request = Request("GET", url)

    driver = make_driver("requests")
    fetch(driver, request)  # Response(..., status_code=200, ...)
    fetch(driver, request, model=List[Repo])  # [Repo(name='am-date-picker'), ...]

    driver = make_driver("aiohttp")
    await fetch(driver, request)  # Response(..., status_code=200, ...)
    await fetch(driver, request, model=List[Repo])  # [Repo(name='am-date-picker'), ...]

Writing a Simple API Client
---------------------------

With *apiwrappers* you can bootstrap clients for different API
pretty fast and easily.

Here is how a typical API client would look like:

.. code-block:: python

    from __future__ import annotations

    from dataclasses import dataclass
    from typing import Awaitable, Generic, List, TypeVar, overload

    from apiwrappers import AsyncDriver, Driver, Request, Url, fetch

    T = TypeVar("T", Driver, AsyncDriver)


    @dataclass
    class Repo:
        id: int
        name: str


    class GitHub(Generic[T]):
        def __init__(self, host: str, driver: T):
            self.url = Url(host)
            self.driver: T = driver

        @overload
        def get_repos(self: Github[Driver], username: str) -> List[Repo]:
            ...

        @overload
        def get_repos(self: Github[AsyncDriver], username: str) -> Awaitable[List[Repo]]:
            ...

        def get_repos(self, username: str):
            url = self.url("/users/{username}/repos", username=username)
            request = Request("GET", url)
            return fetch(self.driver, request, model=List[Repo])

This is small, but fully typed, API client for one of the
`api.github.com <https://api.github.com>`_ endpoints to get all user repos
by username:

Here we defined ``Repo`` dataclass that describes what we want
to get from response and pass it to the ``fetch`` function.
``fetch`` will then make a request and will cast response to that type.

Note how we create URL:

.. code-block:: python

    url = self.url("/users/{username}/repos", username=username)

Sometimes, it's useful to have an URL template, for example, for logging
or for aggregating metrics, so instead of formatting immediately, we
provide a template and replacement fields.

Using the API Client
--------------------

Here how we can use it:

.. code-block:: python

    >>> from apiwrappers import make_driver
    >>> driver = make_driver("requests")
    >>> github = GitHub("https://api.github.com", driver=driver)
    >>> github.get_repos("unmade")
    [Repo(id=47463599, name='am-date-picker'),
     Repo(id=231653904, name='apiwrappers'),
     Repo(id=144204778, name='conway'),
     ...
    ]

To use it with asyncio all we need to do is provide a proper driver
and don't forget to ``await`` method call:

*Use IPython or Python 3.8+ with python -m asyncio
to try this code interactively*

.. code-block:: python

    >>> from apiwrappers import make_driver
    >>> driver = make_driver("aiohttp")
    >>> github = GitHub("https://api.github.com", driver=driver)
    >>> await github.get_repos("unmade")
    [Repo(id=47463599, name='am-date-picker'),
     Repo(id=231653904, name='apiwrappers'),
     Repo(id=144204778, name='conway'),
     ...
    ]

Documentation
=============

Documentation for *apiwrappers* can be found at
`Read The Docs <https://apiwrappers.readthedocs.io/>`_.

Check out `Extended Client Example <example/README.md>`_.

Contributing
============

Contributions are welcome, and they are greatly appreciated! Every
little bit helps, and credit will always be given.

See `contributing guide <CONTRIBUTING.rst>`_ to learn more.

Currently the code and the issues are hosted on GitHub.

The project is licensed under MIT.

