# -*- coding: utf-8 -*-


try:  # Python 3.5+
    from http import HTTPStatus
except ImportError:
    from http import client as HTTPStatus

from pyramid.config import Configurator
from pyramid.authentication import BasicAuthAuthenticationPolicy
from hapic.ext.pyramid import PyramidContext
from pyramid.exceptions import NotFound
from sqlalchemy.exc import OperationalError

from tracim.extensions import hapic
from tracim.config import CFG
from tracim.lib.utils.request import TracimRequest
from tracim.lib.utils.authentification import basic_auth_check_credentials
from tracim.lib.utils.authentification import BASIC_AUTH_WEBUI_REALM
from tracim.lib.utils.authorization import AcceptAllAuthorizationPolicy
from tracim.lib.utils.authorization import TRACIM_DEFAULT_PERM
from tracim.lib.utils.cors import add_cors_support
from tracim.lib.webdav import WebdavAppFactory
from tracim.views import BASE_API_V2
from tracim.views.contents_api.html_document_controller import HTMLDocumentController  # nopep8
from tracim.views.contents_api.threads_controller import ThreadController
from tracim.views.core_api.session_controller import SessionController
from tracim.views.core_api.system_controller import SystemController
from tracim.views.core_api.user_controller import UserController
from tracim.views.core_api.workspace_controller import WorkspaceController
from tracim.views.contents_api.comment_controller import CommentController
from tracim.views.contents_api.file_controller import FileController
from tracim.views.errors import ErrorSchema
from tracim.exceptions import NotAuthenticated
from tracim.exceptions import InvalidId
from tracim.exceptions import InsufficientUserProfile
from tracim.exceptions import InsufficientUserRoleInWorkspace
from tracim.exceptions import WorkspaceNotFoundInTracimRequest
from tracim.exceptions import UserNotFoundInTracimRequest
from tracim.exceptions import ContentNotFoundInTracimRequest
from tracim.exceptions import WorkspaceNotFound
from tracim.exceptions import ContentNotFound
from tracim.exceptions import UserDoesNotExist
from tracim.exceptions import AuthenticationFailed
from tracim.exceptions import ContentTypeNotAllowed


def web(global_config, **local_settings):
    """ This function returns a Pyramid WSGI application.
    """
    settings = global_config
    settings.update(local_settings)
    # set CFG object
    app_config = CFG(settings)
    app_config.configure_filedepot()
    settings['CFG'] = app_config
    configurator = Configurator(settings=settings, autocommit=True)
    # Add BasicAuthPolicy
    authn_policy = BasicAuthAuthenticationPolicy(
        basic_auth_check_credentials,
        realm=BASIC_AUTH_WEBUI_REALM,
    )
    configurator.include(add_cors_support)
    # make sure to add this before other routes to intercept OPTIONS
    configurator.add_cors_preflight_handler()
    # Default authorization : Accept anything.
    configurator.set_authorization_policy(AcceptAllAuthorizationPolicy())
    configurator.set_authentication_policy(authn_policy)
    # INFO - GM - 11-04-2018 - set default perm
    # setting default perm is needed to force authentification
    # mecanism in all views.
    configurator.set_default_permission(TRACIM_DEFAULT_PERM)
    # Override default request
    configurator.set_request_factory(TracimRequest)
    # Pyramids "plugin" include.
    configurator.include('pyramid_jinja2')
    # Add SqlAlchemy DB
    configurator.include('.models')
    # set Hapic
    context = PyramidContext(
        configurator=configurator,
        default_error_builder=ErrorSchema(),
        debug=app_config.DEBUG,
    )
    hapic.set_context(context)
    # INFO - G.M - 2018-07-04 - global-context exceptions
    # Not found
    context.handle_exception(NotFound, HTTPStatus.NOT_FOUND)
    # Bad request
    context.handle_exception(WorkspaceNotFoundInTracimRequest, HTTPStatus.BAD_REQUEST)  # nopep8
    context.handle_exception(UserNotFoundInTracimRequest, HTTPStatus.BAD_REQUEST)  # nopep8
    context.handle_exception(ContentNotFoundInTracimRequest, HTTPStatus.BAD_REQUEST)  # nopep8
    context.handle_exception(WorkspaceNotFound, HTTPStatus.BAD_REQUEST)
    context.handle_exception(UserDoesNotExist, HTTPStatus.BAD_REQUEST)
    context.handle_exception(ContentNotFound, HTTPStatus.BAD_REQUEST)
    context.handle_exception(ContentTypeNotAllowed, HTTPStatus.BAD_REQUEST)
    context.handle_exception(InvalidId, HTTPStatus.BAD_REQUEST)
    # Auth exception
    context.handle_exception(NotAuthenticated, HTTPStatus.UNAUTHORIZED)
    context.handle_exception(AuthenticationFailed, HTTPStatus.FORBIDDEN)
    context.handle_exception(InsufficientUserRoleInWorkspace, HTTPStatus.FORBIDDEN)  # nopep8
    context.handle_exception(InsufficientUserProfile, HTTPStatus.FORBIDDEN)
    # Internal server error
    context.handle_exception(OperationalError, HTTPStatus.INTERNAL_SERVER_ERROR)
    context.handle_exception(Exception, HTTPStatus.INTERNAL_SERVER_ERROR)

    # Add controllers
    session_controller = SessionController()
    system_controller = SystemController()
    user_controller = UserController()
    workspace_controller = WorkspaceController()
    comment_controller = CommentController()
    html_document_controller = HTMLDocumentController()
    thread_controller = ThreadController()
    file_controller = FileController()
    configurator.include(session_controller.bind, route_prefix=BASE_API_V2)
    configurator.include(system_controller.bind, route_prefix=BASE_API_V2)
    configurator.include(user_controller.bind, route_prefix=BASE_API_V2)
    configurator.include(workspace_controller.bind, route_prefix=BASE_API_V2)
    configurator.include(comment_controller.bind, route_prefix=BASE_API_V2)
    configurator.include(html_document_controller.bind, route_prefix=BASE_API_V2)  # nopep8
    configurator.include(thread_controller.bind, route_prefix=BASE_API_V2)
    configurator.include(file_controller.bind, route_prefix=BASE_API_V2)

    hapic.add_documentation_view(
        '/api/v2/doc',
        'Tracim v2 API',
        'API of Tracim v2',
    )
    return configurator.make_wsgi_app()


def webdav(global_config, **local_settings):
    settings = global_config
    settings.update(local_settings)
    app_factory = WebdavAppFactory(
        tracim_config_file_path=settings['__file__'],
    )
    return app_factory.get_wsgi_app()