import os

import wsgicors

from cubicweb.cwconfig import CubicWebConfiguration as cwcfg

from pyramid.config import Configurator

def make_cubicweb_application(cwconfig):

    """

    Create a pyramid-based CubicWeb instance from a cubicweb configuration.

    It is initialy meant to be used by the 'pyramid' command of cubicweb-ctl.

    """

    settings = {

        'session.secret': '11',  # XXX

    }

    if cwconfig.debugmode:

        settings.update({

            'pyramid.debug_authorization': True,

            'pyramid.debug_notfound': True,

            'pyramid.debug_routematch': True,

        })

    config = Configurator(settings=settings)

    if cwconfig.debugmode:

        config.include('pyramid_debugtoolbar')

    config.registry['cubicweb.config'] = cwconfig

    config.registry['cubicweb.repository'] = repo = cwconfig.repository()

    config.registry['cubicweb.registry'] = repo.vreg

    config.include('pyramid_cubicweb.defaults')

    config.include('pyramid_cubicweb.core')

    config.include('pyramid_cubicweb.bwcompat')

    return config

def wsgi_application_from_cwconfig(cwconfig):

    config = make_cubicweb_application(cwconfig)

    app = config.make_wsgi_app()

    # This replaces completely web/cors.py, which is not used by

    # pyramid_cubicweb anymore

    app = wsgicors.CORS(

        app,

        headers=cwconfig['access-control-allow-headers'],

        methods=cwconfig['access-control-allow-methods'],

        credentials='true')

    return app

def wsgi_application(instance_name=None, debug=None):

    if instance_name is None:

        instance_name = os.environ.get('CW_INSTANCE')

    if debug is None:

        debug = 'CW_DEBUG' in os.environ

    cwconfig = cwcfg.config_for(instance_name, debugmode=debug)

    return wsgi_application_from_cwconfig(cwconfig)