Contributor Guide
=================

Thank you for your interest in improving this project. This project is
public domain under the `CC0 1.0 Universal license <https://creativecommons.org/publicdomain/zero/1.0/legalcode>`_
and welcomes contributions in the form of bug reports, feature requests, and
pull requests.

Here is a list of important resources for contributors:

- `Source Code <https://code.usgs.gov/wma/nhgf/toolsteam/nldi-flowtools>`_
- `Documentation <https://nldi-flowtools.readthedocs.io/>`_
- `Issue Tracker <https://code.usgs.gov/wma/nhgf/toolsteam/nldi-flowtools/issues>`_
- `Code of Conduct <https://code.usgs.gov/wma/nhgf/toolsteam/nldi-flowtools/CODE_OF_CONDUCT.md>`_

How to report a bug
-------------------

Report bugs on the `Issue Tracker <https://code.usgs.gov/wma/nhgf/toolsteam/nldi-flowtools/issues>`_.

When filing an issue, make sure to answer these questions:

- Which operating system and Python version are you using?
- Which version of this project are you using?
- What did you do?
- What did you expect to see?
- What did you see instead?

The best way to get your bug fixed is to provide a test case, and/or
steps to reproduce the issue.

How to request a feature
------------------------

Request features on the `Issue Tracker <https://code.usgs.gov/wma/nhgf/toolsteam/nldi-flowtools/issues>`_.

How to set up your development environment
------------------------------------------

You need `UV <https://docs.astral.sh/uv/>`_ installed. Clone the repo, navigate
to the repo directory, and sync the project with its dev dependencies:

.. code-block:: console

   $ uv sync --group dev

This creates a virtual environment and installs everything you need. To activate it:

.. code-block:: console

   $ source .venv/bin/activate

How to test the project
-----------------------

`Nox <https://nox.thea.codes/en/stable/>`_ is used for testing. Run the full test suite:

.. code-block:: console

   $ nox

List the available Nox sessions:

.. code-block:: console

   $ nox --list-sessions

You can also run a specific Nox session. For example, invoke the unit
test suite like this:

.. code-block:: console

   $ nox --session=tests

Unit tests are located in the ``tests`` directory, and are written using
the `pytest <https://pytest.readthedocs.io/>`_ testing framework.

How to submit changes
---------------------

Open a `pull request <https://code.usgs.gov/wma/nhgf/toolsteam/nldi-flowtools/pulls>`_
to submit changes to this project.

Your pull request needs to meet the following guidelines for acceptance:

- The Nox test suite must pass without errors and warnings.
- Include unit tests. This project maintains 100% code coverage.
- If your changes add functionality, update the documentation accordingly.

Feel free to submit early, though—we can always iterate on this.

To run linting and code formatting checks before committing your change,
you can install pre-commit as a Git hook by running the following
command:

.. code-block:: console

   $ nox --session=pre-commit -- install

It is recommended to open an issue before starting work on anything.
This will allow a chance to talk it over with the owners and validate
your approach.