import inspect
import logging
from collections import defaultdict
from inspect import isclass
from typing import Callable, Dict, List, Type, Union
from uuid import uuid4

from core.errors import CoreNotBootedError, ModuleError, ModulePublishedBadEventError, \
    ModuleSubscribeEventNotMatchingHandlerError, ModuleSubscribedToNonClassError, ModuleSubscribedToNonEventClassError
from core.events import BaseEvent, All
from core.messaging import Metadata
from core.types import AnyEventHandler, EventMetadataHandler, Types
from modules.BaseModule import BaseModule


class Core:
    modules: List
    handlers: Dict[Union[None, str], List[AnyEventHandler]] = defaultdict(list)
    metadata_provider: Callable[[], Metadata]

    def __init__(self, metadata_provider: Callable[[], Metadata] = lambda: Metadata(id=uuid4())):
        self.modules = []
        self.booted = False
        setattr(self, 'metadata_provider', metadata_provider)

    def add_module(self, module: BaseModule) -> None:
        logging.info("Registering: %s" % type(module).__name__)
        self.modules.append(module)

    def boot(self) -> None:
        for module in self.modules:
            logging.info("Booting module: %s" % type(module).__name__)

            def module_publish(event: BaseEvent, metadata: Metadata = None) -> None:
                return self.publish(event, metadata, module)

            def module_subscribe(handler: AnyEventHandler, types: Types = All) -> None:
                return self._subscribe(module=module, handler=handler, types=types)

            module.attach(publish=module_publish, subscribe=module_subscribe)
            module.boot()

        self.booted = True
        logging.info("Booted all modules")

    def publish(self, event: BaseEvent, metadata: Metadata = None, module: BaseModule = None) -> None:
        if not self.booted:
            raise CoreNotBootedError()

        if not isinstance(event, BaseEvent):
            raise ModulePublishedBadEventError(module=module, event=event)

        metadata = metadata if metadata else self.metadata_provider()

        for handler in self.handlers[event.type] + self.handlers[All.__name__]:
            (handler_args_spec, *_) = inspect.getfullargspec(handler)

            if 'event' in handler_args_spec and 'metadata' in handler_args_spec:
                assert isinstance(handler, EventMetadataHandler)
                handler(event=event, metadata=metadata)
            elif 'event' in handler_args_spec:
                handler(event=event)
            elif 'metadata' in handler_args_spec:
                handler(metadata=metadata)

    def _subscribe(self, module: BaseModule, handler: AnyEventHandler, types: Types = All) -> None:
        """Internal: Attaches a module's event handler to all types or a specific set of types"""

        # todo: permission check
        if module:
            pass

        (handler_args_spec, *_) = inspect.getfullargspec(handler)
        valid_arguments = {'self', 'event', 'metadata'}
        invalid_arguments = set(handler_args_spec).difference(valid_arguments)
        if invalid_arguments:
            raise ModuleError(
                "Module '%s' subscribes a handler '%s' with invalid arguments: %s" % (
                        type(module).__name__, handler.__name__, repr(invalid_arguments)[1:-1]))

        # noinspection Mypy
        types_list: List[Type[BaseEvent]] = types if type(types) == list else [types]

        for _type in types_list:
            if _type is All:
                self.handlers[All.__name__].append(handler)
            elif isclass(_type):
                if issubclass(_type, BaseEvent):
                    event_annotation = handler.__annotations__['event'] if 'event' in handler.__annotations__ else None
                    if isclass(event_annotation) and event_annotation != _type:
                        raise ModuleSubscribeEventNotMatchingHandlerError(
                            module=module,
                            handler=handler,
                            event=_type
                            )

                    self.handlers[str(_type.type)].append(handler)
                else:
                    raise ModuleSubscribedToNonEventClassError(event=_type, module=module)
            elif _type is not None:
                raise ModuleSubscribedToNonClassError(event=_type, module=module)

505771476cc2780e67b7dc9c5d475efe116bec73
<mask token>


class Core:
    modules: List
    handlers: Dict[Union[None, str], List[AnyEventHandler]] = defaultdict(list)
    metadata_provider: Callable[[], Metadata]
    <mask token>

    def add_module(self, module: BaseModule) ->None:
        logging.info('Registering: %s' % type(module).__name__)
        self.modules.append(module)

    def boot(self) ->None:
        for module in self.modules:
            logging.info('Booting module: %s' % type(module).__name__)

            def module_publish(event: BaseEvent, metadata: Metadata=None
                ) ->None:
                return self.publish(event, metadata, module)

            def module_subscribe(handler: AnyEventHandler, types: Types=All
                ) ->None:
                return self._subscribe(module=module, handler=handler,
                    types=types)
            module.attach(publish=module_publish, subscribe=module_subscribe)
            module.boot()
        self.booted = True
        logging.info('Booted all modules')
    <mask token>
    <mask token>

<mask token>


class Core:
    modules: List
    handlers: Dict[Union[None, str], List[AnyEventHandler]] = defaultdict(list)
    metadata_provider: Callable[[], Metadata]

    def __init__(self, metadata_provider: Callable[[], Metadata]=lambda :
        Metadata(id=uuid4())):
        self.modules = []
        self.booted = False
        setattr(self, 'metadata_provider', metadata_provider)

    def add_module(self, module: BaseModule) ->None:
        logging.info('Registering: %s' % type(module).__name__)
        self.modules.append(module)

    def boot(self) ->None:
        for module in self.modules:
            logging.info('Booting module: %s' % type(module).__name__)

            def module_publish(event: BaseEvent, metadata: Metadata=None
                ) ->None:
                return self.publish(event, metadata, module)

            def module_subscribe(handler: AnyEventHandler, types: Types=All
                ) ->None:
                return self._subscribe(module=module, handler=handler,
                    types=types)
            module.attach(publish=module_publish, subscribe=module_subscribe)
            module.boot()
        self.booted = True
        logging.info('Booted all modules')

    def publish(self, event: BaseEvent, metadata: Metadata=None, module:
        BaseModule=None) ->None:
        if not self.booted:
            raise CoreNotBootedError()
        if not isinstance(event, BaseEvent):
            raise ModulePublishedBadEventError(module=module, event=event)
        metadata = metadata if metadata else self.metadata_provider()
        for handler in (self.handlers[event.type] + self.handlers[All.__name__]
            ):
            handler_args_spec, *_ = inspect.getfullargspec(handler)
            if ('event' in handler_args_spec and 'metadata' in
                handler_args_spec):
                assert isinstance(handler, EventMetadataHandler)
                handler(event=event, metadata=metadata)
            elif 'event' in handler_args_spec:
                handler(event=event)
            elif 'metadata' in handler_args_spec:
                handler(metadata=metadata)
    <mask token>

<mask token>


class Core:
    modules: List
    handlers: Dict[Union[None, str], List[AnyEventHandler]] = defaultdict(list)
    metadata_provider: Callable[[], Metadata]

    def __init__(self, metadata_provider: Callable[[], Metadata]=lambda :
        Metadata(id=uuid4())):
        self.modules = []
        self.booted = False
        setattr(self, 'metadata_provider', metadata_provider)

    def add_module(self, module: BaseModule) ->None:
        logging.info('Registering: %s' % type(module).__name__)
        self.modules.append(module)

    def boot(self) ->None:
        for module in self.modules:
            logging.info('Booting module: %s' % type(module).__name__)

            def module_publish(event: BaseEvent, metadata: Metadata=None
                ) ->None:
                return self.publish(event, metadata, module)

            def module_subscribe(handler: AnyEventHandler, types: Types=All
                ) ->None:
                return self._subscribe(module=module, handler=handler,
                    types=types)
            module.attach(publish=module_publish, subscribe=module_subscribe)
            module.boot()
        self.booted = True
        logging.info('Booted all modules')

    def publish(self, event: BaseEvent, metadata: Metadata=None, module:
        BaseModule=None) ->None:
        if not self.booted:
            raise CoreNotBootedError()
        if not isinstance(event, BaseEvent):
            raise ModulePublishedBadEventError(module=module, event=event)
        metadata = metadata if metadata else self.metadata_provider()
        for handler in (self.handlers[event.type] + self.handlers[All.__name__]
            ):
            handler_args_spec, *_ = inspect.getfullargspec(handler)
            if ('event' in handler_args_spec and 'metadata' in
                handler_args_spec):
                assert isinstance(handler, EventMetadataHandler)
                handler(event=event, metadata=metadata)
            elif 'event' in handler_args_spec:
                handler(event=event)
            elif 'metadata' in handler_args_spec:
                handler(metadata=metadata)

    def _subscribe(self, module: BaseModule, handler: AnyEventHandler,
        types: Types=All) ->None:
        """Internal: Attaches a module's event handler to all types or a specific set of types"""
        if module:
            pass
        handler_args_spec, *_ = inspect.getfullargspec(handler)
        valid_arguments = {'self', 'event', 'metadata'}
        invalid_arguments = set(handler_args_spec).difference(valid_arguments)
        if invalid_arguments:
            raise ModuleError(
                "Module '%s' subscribes a handler '%s' with invalid arguments: %s"
                 % (type(module).__name__, handler.__name__, repr(
                invalid_arguments)[1:-1]))
        types_list: List[Type[BaseEvent]] = types if type(types) == list else [
            types]
        for _type in types_list:
            if _type is All:
                self.handlers[All.__name__].append(handler)
            elif isclass(_type):
                if issubclass(_type, BaseEvent):
                    event_annotation = handler.__annotations__['event'
                        ] if 'event' in handler.__annotations__ else None
                    if isclass(event_annotation) and event_annotation != _type:
                        raise ModuleSubscribeEventNotMatchingHandlerError(
                            module=module, handler=handler, event=_type)
                    self.handlers[str(_type.type)].append(handler)
                else:
                    raise ModuleSubscribedToNonEventClassError(event=_type,
                        module=module)
            elif _type is not None:
                raise ModuleSubscribedToNonClassError(event=_type, module=
                    module)

import inspect
import logging
from collections import defaultdict
from inspect import isclass
from typing import Callable, Dict, List, Type, Union
from uuid import uuid4
from core.errors import CoreNotBootedError, ModuleError, ModulePublishedBadEventError, ModuleSubscribeEventNotMatchingHandlerError, ModuleSubscribedToNonClassError, ModuleSubscribedToNonEventClassError
from core.events import BaseEvent, All
from core.messaging import Metadata
from core.types import AnyEventHandler, EventMetadataHandler, Types
from modules.BaseModule import BaseModule


class Core:
    modules: List
    handlers: Dict[Union[None, str], List[AnyEventHandler]] = defaultdict(list)
    metadata_provider: Callable[[], Metadata]

    def __init__(self, metadata_provider: Callable[[], Metadata]=lambda :
        Metadata(id=uuid4())):
        self.modules = []
        self.booted = False
        setattr(self, 'metadata_provider', metadata_provider)

    def add_module(self, module: BaseModule) ->None:
        logging.info('Registering: %s' % type(module).__name__)
        self.modules.append(module)

    def boot(self) ->None:
        for module in self.modules:
            logging.info('Booting module: %s' % type(module).__name__)

            def module_publish(event: BaseEvent, metadata: Metadata=None
                ) ->None:
                return self.publish(event, metadata, module)

            def module_subscribe(handler: AnyEventHandler, types: Types=All
                ) ->None:
                return self._subscribe(module=module, handler=handler,
                    types=types)
            module.attach(publish=module_publish, subscribe=module_subscribe)
            module.boot()
        self.booted = True
        logging.info('Booted all modules')

    def publish(self, event: BaseEvent, metadata: Metadata=None, module:
        BaseModule=None) ->None:
        if not self.booted:
            raise CoreNotBootedError()
        if not isinstance(event, BaseEvent):
            raise ModulePublishedBadEventError(module=module, event=event)
        metadata = metadata if metadata else self.metadata_provider()
        for handler in (self.handlers[event.type] + self.handlers[All.__name__]
            ):
            handler_args_spec, *_ = inspect.getfullargspec(handler)
            if ('event' in handler_args_spec and 'metadata' in
                handler_args_spec):
                assert isinstance(handler, EventMetadataHandler)
                handler(event=event, metadata=metadata)
            elif 'event' in handler_args_spec:
                handler(event=event)
            elif 'metadata' in handler_args_spec:
                handler(metadata=metadata)

    def _subscribe(self, module: BaseModule, handler: AnyEventHandler,
        types: Types=All) ->None:
        """Internal: Attaches a module's event handler to all types or a specific set of types"""
        if module:
            pass
        handler_args_spec, *_ = inspect.getfullargspec(handler)
        valid_arguments = {'self', 'event', 'metadata'}
        invalid_arguments = set(handler_args_spec).difference(valid_arguments)
        if invalid_arguments:
            raise ModuleError(
                "Module '%s' subscribes a handler '%s' with invalid arguments: %s"
                 % (type(module).__name__, handler.__name__, repr(
                invalid_arguments)[1:-1]))
        types_list: List[Type[BaseEvent]] = types if type(types) == list else [
            types]
        for _type in types_list:
            if _type is All:
                self.handlers[All.__name__].append(handler)
            elif isclass(_type):
                if issubclass(_type, BaseEvent):
                    event_annotation = handler.__annotations__['event'
                        ] if 'event' in handler.__annotations__ else None
                    if isclass(event_annotation) and event_annotation != _type:
                        raise ModuleSubscribeEventNotMatchingHandlerError(
                            module=module, handler=handler, event=_type)
                    self.handlers[str(_type.type)].append(handler)
                else:
                    raise ModuleSubscribedToNonEventClassError(event=_type,
                        module=module)
            elif _type is not None:
                raise ModuleSubscribedToNonClassError(event=_type, module=
                    module)

import inspect
import logging
from collections import defaultdict
from inspect import isclass
from typing import Callable, Dict, List, Type, Union
from uuid import uuid4

from core.errors import CoreNotBootedError, ModuleError, ModulePublishedBadEventError, \
    ModuleSubscribeEventNotMatchingHandlerError, ModuleSubscribedToNonClassError, ModuleSubscribedToNonEventClassError
from core.events import BaseEvent, All
from core.messaging import Metadata
from core.types import AnyEventHandler, EventMetadataHandler, Types
from modules.BaseModule import BaseModule


class Core:
    modules: List
    handlers: Dict[Union[None, str], List[AnyEventHandler]] = defaultdict(list)
    metadata_provider: Callable[[], Metadata]

    def __init__(self, metadata_provider: Callable[[], Metadata] = lambda: Metadata(id=uuid4())):
        self.modules = []
        self.booted = False
        setattr(self, 'metadata_provider', metadata_provider)

    def add_module(self, module: BaseModule) -> None:
        logging.info("Registering: %s" % type(module).__name__)
        self.modules.append(module)

    def boot(self) -> None:
        for module in self.modules:
            logging.info("Booting module: %s" % type(module).__name__)

            def module_publish(event: BaseEvent, metadata: Metadata = None) -> None:
                return self.publish(event, metadata, module)

            def module_subscribe(handler: AnyEventHandler, types: Types = All) -> None:
                return self._subscribe(module=module, handler=handler, types=types)

            module.attach(publish=module_publish, subscribe=module_subscribe)
            module.boot()

        self.booted = True
        logging.info("Booted all modules")

    def publish(self, event: BaseEvent, metadata: Metadata = None, module: BaseModule = None) -> None:
        if not self.booted:
            raise CoreNotBootedError()

        if not isinstance(event, BaseEvent):
            raise ModulePublishedBadEventError(module=module, event=event)

        metadata = metadata if metadata else self.metadata_provider()

        for handler in self.handlers[event.type] + self.handlers[All.__name__]:
            (handler_args_spec, *_) = inspect.getfullargspec(handler)

            if 'event' in handler_args_spec and 'metadata' in handler_args_spec:
                assert isinstance(handler, EventMetadataHandler)
                handler(event=event, metadata=metadata)
            elif 'event' in handler_args_spec:
                handler(event=event)
            elif 'metadata' in handler_args_spec:
                handler(metadata=metadata)

    def _subscribe(self, module: BaseModule, handler: AnyEventHandler, types: Types = All) -> None:
        """Internal: Attaches a module's event handler to all types or a specific set of types"""

        # todo: permission check
        if module:
            pass

        (handler_args_spec, *_) = inspect.getfullargspec(handler)
        valid_arguments = {'self', 'event', 'metadata'}
        invalid_arguments = set(handler_args_spec).difference(valid_arguments)
        if invalid_arguments:
            raise ModuleError(
                "Module '%s' subscribes a handler '%s' with invalid arguments: %s" % (
                        type(module).__name__, handler.__name__, repr(invalid_arguments)[1:-1]))

        # noinspection Mypy
        types_list: List[Type[BaseEvent]] = types if type(types) == list else [types]

        for _type in types_list:
            if _type is All:
                self.handlers[All.__name__].append(handler)
            elif isclass(_type):
                if issubclass(_type, BaseEvent):
                    event_annotation = handler.__annotations__['event'] if 'event' in handler.__annotations__ else None
                    if isclass(event_annotation) and event_annotation != _type:
                        raise ModuleSubscribeEventNotMatchingHandlerError(
                            module=module,
                            handler=handler,
                            event=_type
                            )

                    self.handlers[str(_type.type)].append(handler)
                else:
                    raise ModuleSubscribedToNonEventClassError(event=_type, module=module)
            elif _type is not None:
                raise ModuleSubscribedToNonClassError(event=_type, module=module)
