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#
#   http://www.apache.org/licenses/LICENSE-2.0
#
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import typing
from abc import ABC
from betterproto import Message
from typing import Iterator

from core.models import Tuple
from core.models.state import State
from core.util import get_one_of
from proto.org.apache.texera.amber.core import ActorVirtualIdentity
from proto.org.apache.texera.amber.engine.architecture.rpc import EmbeddedControlMessage
from proto.org.apache.texera.amber.engine.architecture.sendsemantics import Partitioning


class Partitioner(ABC):
    def __init__(self, partitioning: Message):
        self.partitioning: Partitioning = get_one_of(partitioning)

    def add_tuple_to_batch(
        self, tuple_: Tuple
    ) -> Iterator[typing.Tuple[ActorVirtualIdentity, typing.List[Tuple]]]:
        pass

    def flush(
        self, to: ActorVirtualIdentity, ecm: EmbeddedControlMessage
    ) -> Iterator[typing.Union[EmbeddedControlMessage, typing.List[Tuple]]]:
        pass

    def flush_state(
        self, state: State
    ) -> Iterator[
        typing.Tuple[ActorVirtualIdentity, typing.Union[State, typing.List[Tuple]]]
    ]:
        pass

    def reset(self) -> None:
        pass

    def __repr__(self):
        return f"Partitioner[partitioning={self.partitioning}]"
