Reactpy fixes and updates

[shawncrawley]

Description

The work herein was initiated to fix a critical bug with Tethys ReactPy apps, but became somewhat gold-plated with a few additional features and fixes.

Critical bugfix:
Namely, having separate ComponentLibrary instances - one per app page - rather having a single, global instance. The ComponentLibrary was designed to dynamically keep track of an app's dependencies. On initial development, it was implemented as a single, global library shared by all apps and pages. This led to the issue of separate apps and pages essentially fighting over the ComponentLibrary, overwriting the dependencies for each other or injecting unneeded ones for other apps/pages.

Other Bugfixes:

• use_workspace is now built on the correct ReactPy use_query paradigm that allows the Django ORM to be queried to check quotas without raising an error or having to do other hokey workarounds. The use_query Promise-like object was wrapped and customized to substitute checking_quota and quota_exceeded for loading and error, respectively. It is now used as follows:

@App.page
def my_page(lib):
    user_workspace = lib.hooks.use_workspace(user=user)
    if user_workspace.checking_quota:
        return lib.html.h1("Loading")
    elif user_workspace.quota_exceeded:
        return lib.html.h2("You have exceeded your storage quota")
    else:
        user_file_path = user_workspace.path / "user.file"
        ...

• Test app/extension setup.py files were replaces with pyproject.toml files to resolve broken installation of those resources during testing

Additional features:

• Removes the need for the Props argument by implementing a new syntactical interface for defining ReactPy code: <elem>(**props_as_kwargs)(*children_as_args). For example:

lib.html.div(class_name="my-containers")(
    lib.html.img(class_name="my-images", src="/path/to/my-image.png")
)

Instead of

lib.html.div(Props(class_name="my-containers"), 
    lib.html.img(Props(class_name="my-images", src="/path/to/my-image.png"))
)

• Condenses ReactPy scaffold down to app.py as the only required app file:

from tethys_sdk.base import ReactPyBase


class App(ReactPyBase):
    """
    Tethys app class for {{proper_name}}.
    """

    name = '{{proper_name}}'
    description = '{{description|default("Place a brief description of your app here.")}}'
    package = '{{project}}'  # WARNING: Do not change this value
    index = 'home'
    icon = f'{package}/images/icon.png'
    root_url = '{{project_url}}'
    color = '{{color}}'
    tags = '{{tags}}'
    enable_feedback = False
    feedback_emails = []
    exit_url = '/apps/'
    default_layout = "NavHeader"
    nav_links = "auto"


@App.page
def home(lib):
    map_center, set_map_center = lib.hooks.use_state([39.254852, -98.593853])
    map_zoom, set_map_zoom = lib.hooks.use_state(4)
    
    return lib.html.div(
        lib.pm.Map(
            height="calc(100vh - 62px)",
            defaultCenter=map_center,
            defaultZoom=map_zoom
        )
    )

• New hooks were created for all Paths API objects: use_workspace(user=None), use_media(user=None), use_resources() and use_public()

Changes Made to Code

Additional Notes

Quality Checks

• At least one new test has been written for new code
• New code has 100% test coverage
• Code has been formatted with Black
• Code has been linted with flake8
• Docstrings for new methods have been added
• The documentation has been updated appropriately (there's no documentation yet, that's what I'll be overhauling in my next PR)

[coveralls]

coverage: 99.991% (-0.009%) from 100.0%
when pulling fbce1f4 on reactpy-fixes
into f06fa71 on main.

[swainn]

See comments

[swainn]

Approved on the contingency of a future debate on the naming conventions.