# implementation Conainer methods
from frostfs_sdk.client.models.client_environment import ClientEnvironment
from frostfs_sdk.client.services.context_accessor import ContextAccessor
from frostfs_sdk.client.services.session import SessionClient
from frostfs_sdk.client.parameters.container_param import ContainerCreateParam
from frostfs_sdk.client.parameters.call_context_param import CallContextParam
from frostfs_sdk.client.utils.session_cache import SessionToken
from frostfs_sdk.client.utils.request_constructor import RequestConstructor
from frostfs_sdk.cryptography.signer import Signer
from frostfs_sdk.models.dto.container import ContainerId, Container
from frostfs_sdk.models.mappers.container_mapper import ContainerMapper
from frostfs_sdk.models.mappers.owner_id_mapper import OwnerIdMapper
from frostfs_sdk.models.mappers.version_mapper import VersionMapper
from frostfs_sdk.client.parameters.create_session_param import CreateSessionParam

from frostfs_sdk.protos.models.container import service_pb2 as service_pb2_container
from frostfs_sdk.protos.models.container import service_pb2_grpc as service_pb2_grpc_container


class ContainerClient(ContextAccessor):
    def __init__(self, client_environment: ClientEnvironment):
        super().__init__(client_environment)
        self.container_stub = service_pb2_grpc_container.ContainerServiceStub(client_environment.channel)
        self.ecdsa = client_environment.ecdsa

    def create_container(self, container_create_param: ContainerCreateParam,  ctx: CallContextParam) -> ContainerId:
        request = self._create_put_request(container_create_param, ctx)
        response: service_pb2_container.PutResponse = self.container_stub.Put(request)
        return ContainerId(value=response.body.container_id.value)
    
    def _create_put_request(self, param: ContainerCreateParam, ctx: CallContextParam) -> service_pb2_container.PutRequest:
        """
        Creates a PUT request for creating a container.
        """

        grpc_container=ContainerMapper().to_grpc_message(param.container, self.get_context)

        body = service_pb2_container.PutRequest.Body(
            container=grpc_container,
            signature=Signer.sign_message_rfc_6979(self.get_context.ecdsa, grpc_container)
            )
        
        request = service_pb2_container.PutRequest(body=body)
        session_token = self.get_or_create_session(param.session_token, ctx)
        proto_token = session_token
        RequestConstructor.add_meta_header(request, param.x_headers, proto_token)

        signed_request = Signer.sign(self.ecdsa.private_key, request)
        return signed_request

    def get_or_create_session(self, session_ctx: SessionToken, ctx: CallContextParam) -> bytes:
        if session_ctx:
            return session_ctx.token
        
        session_token_from_cache = self.get_context.session_cache.try_get_value(self.get_context.get_session_key())
        if session_token_from_cache:
            return session_token_from_cache.token

        new_session_token = SessionClient(self.get_context).create_session(CreateSessionParam(expiration=-1), ctx)
        if new_session_token:
            self.get_context.session_cache.set_value(self.get_context.get_session_key(), new_session_token)
            return new_session_token.token
        
        raise ValueError("cannot create session")