'''Lycodon Web API Server'''
from typing import Awaitable, Callable

import fastapi

from .. import __version__
from ..config import Configuration
from .context import Context


app = fastapi.FastAPI(
    title='Lycodon',
    description='Lycodon is a music library manager.',
    version=__version__,
    docs_url='/api-doc/',
    redoc_url=None,
)


# Application context
context = Context()
context.config = Configuration()


@app.middleware('http')
async def context_middleware(
    request: fastapi.Request,
    call_next: Callable[[fastapi.Request], Awaitable[fastapi.Response]],
) -> fastapi.Response:
    '''Middleware to add the Application Context to the request scope

    This middleware function adds the :py:class:`Context` to the
    ASGI request scope.  To retrieve it, use
    :py:func:`lycodon.api.context.get_context`.
    '''

    request.scope['lycodon_ctx'] = context
    return await call_next(request)