from django.conf import settings
from django.conf.urls import include, url
from django.urls import path
from rest_framework import routers
from rest_framework.documentation import include_docs_urls

from backend_app.permissions import DEFAULT_VIEWSET_PERMISSIONS
from shared import get_api_config

from . import views
from dotmap import DotMap

import importlib

urlpatterns = [url(r"^api-docs/", include_docs_urls(title="Outgoing API"))]
router = routers.DefaultRouter()

ALL_MODELS = []
ALL_VIEWSETS = []

# Automatically load models and viewset based on API config file
api_config = get_api_config()

for entry in api_config:
    model_obj = DotMap(entry)
    if (not model_obj.requires_testing) or (
        settings.TESTING and model_obj.requires_testing
    ):
        module = importlib.import_module(
            "backend_app.models.{}".format(model_obj.import_location)
        )
        Viewset = getattr(module, model_obj.viewset)
        ALL_VIEWSETS.append(Viewset)

        if model_obj.model is not None and not model_obj.ignore_in_admin:
            ALL_MODELS.append(getattr(module, model_obj.model))

        # Creating the correct router entry
        str_url = model_obj.api_end_point
        if "api_attr" in model_obj:
            str_url += "/{}".format(model_obj.api_attr)
        if "api_name" in model_obj:
            router.register(str_url, Viewset, model_obj.api_name)
        else:
            router.register(str_url, Viewset)

# Add all the endpoints for the base api
urlpatterns += [url(r"^api/", include(router.urls))]

# Add some custom APIs
urlpatterns.append(path("api/serverModerationStatus/", views.app_moderation_status))

#######
# Models and Viewset checks
#######

# Check that all the models config have been set
for Model in ALL_MODELS:
    for key in Model.model_config:
        val = Model.model_config[key]
        if val is None:
            raise Exception(
                "You forgot to set the {} config variable in the model {}".format(
                    key, str(Model)
                )
            )

# Check that all the viewsets have at least the permissions from the default viewset permissions
for Viewset in ALL_VIEWSETS:
    for p in DEFAULT_VIEWSET_PERMISSIONS:
        v_p = Viewset.permission_classes
        if p not in v_p:
            raise Exception(
                "Permission_classes are not defined correctly in the viewset {}".format(
                    str(Viewset)
                )
            )