Contributions
=============

Contributions are welcome!

The repository is hosted at `gitlab.com/yaal/canaille <https://gitlab.com/yaal/canaille>`_.

Discuss
-------

If you want to implement a feature or a bugfix, please start by discussing it with us on
the `bugtracker <https://gitlab.com/yaal/canaille/-/issues>`_ or the `matrix room
<https://matrix.to/#/#canaille-discuss:yaal.coop>`_.

Development environment
-----------------------

You can either run the demo locally or with Docker.

The only tool required for local development is `uv`.
Make sure to have uv `installed on your computer <https://docs.astral.sh/uv/getting-started/installation/>`_
to be able to hack Canaille.

Initialize your development environment with:

- ``uv sync --extra front --extra oidc`` to have a minimal working development environment. This will allow you to run the tests with ``uv pytest --backend memory``.
- ``uv sync --extra front --extra oidc --extra sqlite`` to have a minimal working development environment with SQLite backend support. This will allow you to run the tests with ``uv pytest --backend sql``.
- ``uv sync --extra front --extra oidc --extra ldap`` to have a minimal working development environment with LDAP backend support. This will allow you to run the tests with ``uv pytest --backend ldap``.
- ``uv sync --all-extras`` if you want to have everything at your fingertips. Note that it may compile some Python dependencies that would expect things to be installed on your system;
  Some dependencies of Canaille might need to be compiled, so you probably want to check that `GCC` and `cargo` are available on your computer.

After having launched the demo you have access to several services:

- A canaille server at `localhost:5000 <http://localhost:5000>`_
- A dummy client at `localhost:5001 <http://localhost:5001>`_
- Another dummy client at `localhost:5002 <http://localhost:5002>`_

The canaille server has some default users:

- A regular user which login and password are **user**;
- A moderator user which login and password are **moderator**;
- An admin user which admin and password are **admin**;
- A new user which login is **james**. This user has no password yet,
  and his first attempt to log-in would result in sending a password initialization
  email (if a smtp server is configured).

Backends
~~~~~~~~

Canaille comes with several backends:

- a lightweight test purpose `memory` backend
- a `sql` backend, based on sqlalchemy
- a production-ready `LDAP` backend

Docker environment
~~~~~~~~~~~~~~~~~~

If you want to develop with docker, your browser needs to be able to reach the `canaille` container.
The docker-compose file exposes the right ports, but front requests are from outside the docker network:
the `canaille` url that makes sense for docker, points nowhere from your browser.
As exposed ports are on `localhost`, you need to tell your computer that `canaille` url means `localhost`.

To do that, you can add the following line to your `/etc/hosts`:

.. code-block:: console

    127.0.0.1   canaille

To launch containers, use:

SQL
^^^
With the SQL backend, the demo instance will load and save data in a local sqlite database.

.. code-block:: console
    :caption: Run the demo instance with the SQL backend

    cd demo
    docker compose up

Memory
^^^^^^
With the memory backend, all data is lost when Canaille stops.

.. code-block:: console
    :caption: Run the demo instance with the memory backend

    cd demo
    docker compose --file docker-compose-memory.yml up

LDAP
^^^^
With the LDAP backend, all data is lost when Canaille stops.

.. code-block:: console
    :caption: Run the demo instance with the LDAP backend

    cd demo
    docker compose --file docker-compose-ldap.yml up

Local environment
~~~~~~~~~~~~~~~~~

SQL
^^^
With the SQL backend, the demo instance will load and save data in a local sqlite database.

.. code-block:: console
    :caption: Run the demo instance with the SQL backend

    ./demo/run.sh

Memory
^^^^^^
With the memory backend, all data is lost when Canaille stops.

.. code-block:: console
    :caption: Run the demo instance with the memory backend

    ./demo/run.sh --backend memory

LDAP
^^^^
With the LDAP backend, all data is lost when Canaille stops.

.. code-block:: console
    :caption: Run the demo instance with the LDAP backend

    ./demo/run.sh --backend ldap

.. note ::
    If you want to run the demo locally with the LDAP backend, you need to have
    `OpenLDAP <https://www.openldap.org/>`_ installed on your system.
    It is generally shipped under the ``slapd`` or ``openldap`` package name.

.. warning ::
    On Debian or Ubuntu systems, the OpenLDAP `slapd` binary usage might be restricted by apparmor,
    and thus makes the tests and the demo fail. This can be mitigated by removing apparmor restrictions
    on `slapd`.

    .. code-block:: console

        sudo apt install --yes apparmor-utils
        sudo aa-complain /usr/sbin/slapd

Populate the database
~~~~~~~~~~~~~~~~~~~~~

The demo database comes populated with some random users and groups. If you need more, you can generate
users and groups with the ``populate`` command:

.. code-block:: console

    # If using docker:
    docker compose exec canaille env CONFIG=conf-docker/canaille-ldap.toml uv run canaille populate --nb 100 users  # or docker-compose

    # If running in local environment
    env CONFIG=conf/canaille-ldap.toml uv run canaille populate  --nb 100 users

Adapt to use either the `ldap` or the `sql` configuration file. Note that this will not work with the memory backend.

Unit tests
----------

To run the tests, you just can run `uv run pytest` and/or `uv run tox` to test all the supported python environments.
Everything must be green before patches get merged.

To test a specific backend you can pass ``--backend memory``, ``--backend sql`` or ``--backend ldap`` to pytest and tox.

The test coverage is 100%, patches won't be accepted if not entirely covered. You can check the
test coverage with ``uv run pytest --cov --cov-report=html`` or ``uv run tox -e coverage -- --cov-report=html``.
You can check the HTML coverage report in the newly created `htmlcov` directory.

Code style
----------

We use `ruff <https://docs.astral.sh/ruff/>`_ along with other tools to format our code.
Please run ``uv run tox -e style`` on your patches before submitting them.
In order to perform a style check and correction at each commit you can use our
`pre-commit <https://pre-commit.com/>`_ configuration with ``uv run pre-commit install``.

Front
-----

The interface is built upon the `Fomantic UI <https://fomantic-ui.com/>`_ CSS framework.
The dynamical parts of the interface use `htmx <https://htmx.org/>`_.

- Using Javascript in the interface is tolerated, but the whole website MUST be accessible
  for browsers without Javascript support, and without any feature loss.
- Because of Fomantic UI we have a dependency to jQuery, however new contributions should
  not depend on jQuery at all.
  See the `related issue <https://gitlab.com/yaal/canaille/-/issues/130>`_.

Documentation
-------------

The documentation is generated when the tests run:

.. code-block:: bash

    tox -e doc

You can also run sphinx by hand, that should be faster since it avoids the tox environment initialization:

.. code-block:: bash

   sphinx-build doc build/sphinx/html/en

The generated documentation is located at ``build/sphinx/html/en``.

Code translation
----------------

.. include:: ../../canaille/translations/README.rst


Documentation translation
-------------------------

.. include:: ../locales/readme.rst

Publish a new release
---------------------

1. Check that dependencies are up to date with ``uv sync --all-extras --upgrade`` and update dependencies accordingly in separated commits;
2. Check that tests are still green for every supported python version, and that coverage is still at 100%, by running ``uv run tox``;
3. Check that the demo environments are still working, both the local and the Docker one;
4. Check that the :ref:`development/changelog:Release notes` section is correctly filled up;
5. Increase the version number in ``pyproject.toml``;
6. Commit with ``git commit``;
7. Build with ``uv build``;
8. Publish on test PyPI with ``uv publish --publish-url https://test.pypi.org/legacy/``;
9. Install the test package somewhere with ``pip install --extra-index-url https://test.pypi.org/simple --upgrade canaille``. Check that everything looks fine;
10. Publish on production PyPI ``uv publish``;
11. Tag the commit with ``git tag XX.YY.ZZ``;
12. Push the release commit and the new tag on the repository with ``git push --tags``.
