import sys from collections import OrderedDict from operator import attrgetter from typing import Any, Dict, List, Set from django.apps import AppConfig from django.conf import settings from django.db.models.signals import post_migrate from ..utils.projector import register_projector_elements class CoreAppConfig(AppConfig): name = 'openslides.core' verbose_name = 'OpenSlides Core' angular_site_module = True angular_projector_module = True def ready(self): # Import all required stuff. from .config import config from ..utils.rest_api import router from ..utils.cache import element_cache from .projector import get_projector_elements from .signals import ( delete_django_app_permissions, get_permission_change_data, permission_change, post_permission_creation, ) from .views import ( ChatMessageViewSet, ConfigViewSet, CountdownViewSet, HistoryViewSet, ProjectorMessageViewSet, ProjectorViewSet, TagViewSet, ) from ..utils.constants import set_constants, get_constants_from_apps from .websocket import ( NotifyWebsocketClientMessage, ConstantsWebsocketClientMessage, GetElementsWebsocketClientMessage, AutoupdateWebsocketClientMessage, ) from ..utils.websocket import register_client_message from ..utils.access_permissions import required_user # Collect all config variables before getting the constants. config.collect_config_variables_from_apps() # Skip all database related accesses during migrations. is_normal_server_start = False for sys_part in sys.argv: for entry in ('runserver', 'gunicorn', 'daphne'): if sys_part.endswith(entry): is_normal_server_start = True break # Set constants if is_normal_server_start: set_constants(get_constants_from_apps()) # Define projector elements. register_projector_elements(get_projector_elements()) # Connect signals. post_permission_creation.connect( delete_django_app_permissions, dispatch_uid='delete_django_app_permissions') permission_change.connect( get_permission_change_data, dispatch_uid='core_get_permission_change_data') post_migrate.connect(call_save_default_values, sender=self, dispatch_uid='core_save_config_default_values') # Register viewsets. router.register(self.get_model('Projector').get_collection_string(), ProjectorViewSet) router.register(self.get_model('ChatMessage').get_collection_string(), ChatMessageViewSet) router.register(self.get_model('Tag').get_collection_string(), TagViewSet) router.register(self.get_model('ConfigStore').get_collection_string(), ConfigViewSet, 'config') router.register(self.get_model('ProjectorMessage').get_collection_string(), ProjectorMessageViewSet) router.register(self.get_model('Countdown').get_collection_string(), CountdownViewSet) router.register(self.get_model('History').get_collection_string(), HistoryViewSet) # Sets the cache and builds the startup history if is_normal_server_start: element_cache.ensure_cache() self.get_model('History').objects.build_history() # Register client messages register_client_message(NotifyWebsocketClientMessage()) register_client_message(ConstantsWebsocketClientMessage()) register_client_message(GetElementsWebsocketClientMessage()) register_client_message(AutoupdateWebsocketClientMessage()) # register required_users required_user.add_collection_string(self.get_model('ChatMessage').get_collection_string(), required_users) def get_config_variables(self): from .config_variables import get_config_variables return get_config_variables() def get_startup_elements(self): """ Yields all Cachables required on startup i. e. opening the websocket connection. """ for model_name in ('Projector', 'ChatMessage', 'Tag', 'ProjectorMessage', 'Countdown', 'ConfigStore', 'History'): yield self.get_model(model_name) def get_angular_constants(self): from .config import config constants: Dict[str, Any] = {} # Client settings client_settings_keys = [ 'MOTION_IDENTIFIER_MIN_DIGITS', 'MOTION_IDENTIFIER_WITHOUT_BLANKS', 'MOTIONS_ALLOW_AMENDMENTS_OF_AMENDMENTS' ] client_settings_dict = {} for key in client_settings_keys: try: client_settings_dict[key] = getattr(settings, key) except AttributeError: # Settings key does not exist. Do nothing. The client will # treat this as undefined. pass constants['OpenSlidesSettings'] = client_settings_dict # Config variables config_groups: List[Any] = [] for config_variable in sorted(config.config_variables.values(), key=attrgetter('weight')): if config_variable.is_hidden(): # Skip hidden config variables. Do not even check groups and subgroups. continue if not config_groups or config_groups[-1]['name'] != config_variable.group: # Add new group. config_groups.append(OrderedDict( name=config_variable.group, subgroups=[])) if not config_groups[-1]['subgroups'] or config_groups[-1]['subgroups'][-1]['name'] != config_variable.subgroup: # Add new subgroup. config_groups[-1]['subgroups'].append(OrderedDict( name=config_variable.subgroup, items=[])) # Add the config variable to the current group and subgroup. config_groups[-1]['subgroups'][-1]['items'].append(config_variable.data) constants['OpenSlidesConfigVariables'] = config_groups return constants def call_save_default_values(**kwargs): from .config import config config.save_default_values() def required_users(element: Dict[str, Any]) -> Set[int]: """ Returns all user ids that are displayed as chatters. """ return set(element['user_id'])