from abc import ABC, abstractmethod

from ..client import ShapeshifterAgrCroClient, ShapeshifterAgrDsoClient
from ..uftp import (
    AgrPortfolioQueryResponse,
    AgrPortfolioUpdateResponse,
    DPrognosisResponse,
    FlexOfferResponse,
    FlexOfferRevocationResponse,
    FlexOrder,
    FlexRequest,
    FlexReservationUpdate,
    FlexSettlement,
    MeteringResponse,
    TestMessage,
    TestMessageResponse,
    UsefRole,
)
from .base_service import ShapeshifterService


class ShapeshifterAgrService(
    ShapeshifterService, ABC
):  # pylint: disable=too-many-public-methods
    """
    Service that represents the Aggregator in the UFTP communication.

    This service can receive requests from the DSO.
    """

    sender_role = UsefRole.AGR
    acceptable_messages = [
        AgrPortfolioQueryResponse,
        AgrPortfolioUpdateResponse,
        DPrognosisResponse,
        FlexOfferResponse,
        FlexOfferRevocationResponse,
        FlexOrder,
        FlexRequest,
        FlexReservationUpdate,
        FlexSettlement,
        MeteringResponse,
        TestMessage,
        TestMessageResponse,
    ]


    @abstractmethod
    def process_d_prognosis_response(self, message: DPrognosisResponse):
        """
        FlexOffer messages are used by AGRs to make DSOs an offer for provision
        of flexibility. A FlexOffer message contains a list of ISPs and, for
        each ISP, the change in consumption or production offered and the price
        for the total amount of flexibility offered. FlexOffer messages can be
        sent once a FlexRequest message has been received but can also be sent
        unsolicited. Note that multiple FlexOffer messages may be sent based on
        a single FlexRequest, e.g. to increase the chance that the DSO will
        order at least part of its available flexibility. The AGR must make
        sure that it can actually provide the flexibility offered across all of
        its FlexOffers.
        """


    @abstractmethod
    def process_flex_request(self, message: FlexRequest):
        """
        This method should probably end by sending some Flex Offers to the DSO::

            with self.dso_client(message.sender_domain) as client:
                response = client.send_flex_offer(FlexOffer(...)
                # Do something with the response here.
        """


    @abstractmethod
    def process_flex_offer_response(self, message: FlexOfferResponse):
        """
        This method should probably end by sending some Flex Offers to the DSO::

            with self.dso_client(message.sender_domain) as client:
                response = client.send_flex_offer(FlexOffer(...)
                # Do something with the response here.
        """


    @abstractmethod
    def process_flex_offer_revocation_response(
        self, message: FlexOfferRevocationResponse
    ):
        """
        Upon receiving and processing a FlexOfferRevocation message, the
        receiving implementation must reply with a FlexOfferRevocationResponse,
        indicating whether the revocation was handled successfully.

        It is advised that this method ends by sending a FlexSettlementResponse to the DSO::

            with self.dso_client(message.sender_domain):
                response = client.send_flex_settlement_response(FlexSettlementResponse(...))
                # do something with the response here.
        """

    @abstractmethod
    def process_flex_order(self, message: FlexOrder):
        """
        FlexOrder messages are used by DSOs to purchase flexibility from an AGR
        based on a previous FlexOffer. A FlexOrder message contains a list of
        ISPs, with, for each ISP, the change in consumption or production to be
        realized by the AGR, and the accepted price to be paid by the DSO for
        this amount of flexibility. This ISP list should be copied from the
        FlexOffer message without modification: AGR implementations will
        (and must) reject FlexOrder messages where the ISP list is not exactly
        the same as offered.
        """

    @abstractmethod
    def process_flex_reservation_update(self, message: FlexReservationUpdate):
        """
        For bilateral contracts, FlexReservationUpdate messages are used by DSOs
        to signal to an AGR which part of the contracted volume is still
        reserved and which part is not needed and may be used for other
        purposes. For each ISP, a power value is given which indicates how much
        power is still reserved. Zero power means that no power is reserved for
        that ISP and the sign of the power indicates the direction.
        """

    @abstractmethod
    def process_flex_settlement(self, message: FlexSettlement):
        """
        The FlexSettlement message is sent by DSOs on a regular basis
        (typically monthly) to AGRs, in order to initiate settlement. It
        includes a list of all FlexOrders placed by the originating party
        during the settlement period.

        It is advised that this method ends by sending a FlexSettlementResponse to the DSO::

            with self.get_dso_client(message.sender_domain):
                response = client.send_flex_settlement_response(FlexSettlementResponse(...))
                # do something with the response here.
        """

    @abstractmethod
    def process_metering_response(self, message: MeteringResponse):
        """
        Upon receiving and processing a Metering message, the
        receiving implementation must reply with a MeteringResponse,
        indicating whether the update was handled successfully.
        """

    @abstractmethod
    def process_agr_portfolio_query_response(self, message: AgrPortfolioQueryResponse):
        """
        The AgrPortfolioQueryResponse is sent by the CRO after you sent a
        AgrPortfolioQuery. It contains the list of your connections. It is
        recommended that you do not perform any long-running operations inside
        this function, but return a PayloadMessageResponse quickly.
        Longer-running operations (like a database sync) should be done inside
        the process_agr_portfolio_query_response method.

        If the list of connections does not match what you expected it
        to be, you can send an AgrPortfolioUpdate message at the end
        of this method::

            with self.get_dso_client(message.sender_domain) as client:
                response = client.send_portfolio_update(AgrPortfolioUpdate(...))
                # Do something with the response here
        """

    @abstractmethod
    def process_agr_portfolio_update_response(
        self, message: AgrPortfolioUpdateResponse
    ):
        """
        The AgrPortfolioUptadeResponse is sent by the CRO after you sent a
        AgrPortfolioUpdate.
        """

    # ------------------------------------------------------------ #
    #  Convenience methods for getting a client to the designated  #
    #                         participant.                         #
    # ------------------------------------------------------------ #

    def cro_client(self, recipient_domain, version="3.1.0") -> ShapeshifterAgrCroClient:
        """
        Retrieve a client object for sending messages to the CRO.
        """
        return self._get_client(recipient_domain, "CRO", version)

    def dso_client(self, recipient_domain, version="3.1.0") -> ShapeshifterAgrDsoClient:
        """
        Retrieve a client object for sending messages to the DSO.
        """
        return self._get_client(recipient_domain, "DSO", version)
