from typing import (
    List,
    Optional,
    Tuple,
    Union,
)

from aiogrpcclient import BaseGrpcClient
from grpc import StatusCode
from grpc.experimental.aio import AioRpcError
from nexus.meta_api.proto.documents_service_pb2 import \
    RollRequest as RollRequestPb
from nexus.meta_api.proto.documents_service_pb2 import \
    RollResponse as RollResponsePb
from nexus.meta_api.proto.documents_service_pb2 import \
    TopMissedRequest as TopMissedRequestPb
from nexus.meta_api.proto.documents_service_pb2 import \
    TopMissedResponse as TopMissedResponsePb
from nexus.meta_api.proto.documents_service_pb2 import \
    TypedDocumentRequest as TypedDocumentRequestPb
from nexus.meta_api.proto.documents_service_pb2_grpc import DocumentsStub
from nexus.meta_api.proto.search_service_pb2 import \
    SearchRequest as SearchRequestPb
from nexus.meta_api.proto.search_service_pb2 import \
    SearchResponse as SearchResponsePb
from nexus.meta_api.proto.search_service_pb2_grpc import SearchStub
from nexus.models.proto.typed_document_pb2 import \
    TypedDocument as TypedDocumentPb
from tenacity import (
    retry,
    retry_if_exception,
    stop_after_attempt,
    wait_fixed,
)


class MetaApiGrpcClient(BaseGrpcClient):
    stub_clses = {
        'documents': DocumentsStub,
        'search': SearchStub,
    }

    async def get(
        self,
        schema: str,
        document_id: int,
        position: Optional[int] = None,
        request_id: Optional[str] = None,
        session_id: Optional[str] = None,
        user_id: Optional[int] = None,
    ) -> TypedDocumentPb:
        return await self.stubs['documents'].get(
            TypedDocumentRequestPb(
                schema=schema,
                document_id=document_id,
                position=position,
                session_id=session_id,
                user_id=user_id,
            ),
            metadata=(
                ('request-id', request_id),
            ),
        )

    async def roll(
        self,
        language: Optional[str] = None,
        request_id: Optional[str] = None,
        session_id: Optional[str] = None,
        user_id: Optional[int] = None,
    ) -> RollResponsePb:
        return await self.stubs['documents'].roll(
            RollRequestPb(
                language=language,
                session_id=session_id,
                user_id=user_id,
            ),
            metadata=(
                ('request-id', request_id),
            ),
        )

    @retry(
        retry=retry_if_exception(
            lambda e: isinstance(e, AioRpcError) and (
                e.code() == StatusCode.CANCELLED
                or e.code() == StatusCode.UNAVAILABLE
            )
        ),
        reraise=True,
        stop=stop_after_attempt(5),
        wait=wait_fixed(2),
    )
    async def search(
        self,
        schemas: Union[List[str], Tuple[str]],
        query: str,
        page: Optional[int] = None,
        page_size: Optional[int] = None,
        language: Optional[str] = None,
        request_id: Optional[str] = None,
        session_id: Optional[str] = None,
        user_id: Optional[int] = None,
    ) -> SearchResponsePb:
        return await self.stubs['search'].search(
            SearchRequestPb(
                schemas=schemas,
                query=query,
                page=page,
                page_size=page_size,
                language=language,
                session_id=session_id,
                user_id=user_id,
            ),
            metadata=(
                ('request-id', request_id),
            ),
        )

    async def top_missed(
        self,
        page: int,
        page_size: int,
        request_id: Optional[str] = None,
        session_id: Optional[str] = None,
        user_id: Optional[int] = None,
    ) -> TopMissedResponsePb:
        return await self.stubs['documents'].top_missed(
            TopMissedRequestPb(
                page=page,
                page_size=page_size,
                session_id=session_id,
                user_id=user_id,
            ),
            metadata=(
                ('request-id', request_id),
            ),
        )