from abc import ABC, abstractmethod
from typing import Dict, List, Optional, Type

from pydantic import BaseModel

from .liquidations import Liquidation
from .nft_trades import NftTrade
from .swaps import Swap
from .traces import Classification, ClassifiedTrace, DecodedCallTrace, Protocol
from .transfers import Transfer


class Classifier(ABC):
    @staticmethod
    @abstractmethod
    def get_classification() -> Classification:
        raise NotImplementedError()


class TransferClassifier(Classifier):
    @staticmethod
    def get_classification() -> Classification:
        return Classification.transfer

    @staticmethod
    @abstractmethod
    def get_transfer(trace: DecodedCallTrace) -> Transfer:
        raise NotImplementedError()


class SwapClassifier(Classifier):
    @staticmethod
    def get_classification() -> Classification:
        return Classification.swap

    @staticmethod
    @abstractmethod
    def parse_swap(
        trace: DecodedCallTrace,
        prior_transfers: List[Transfer],
        child_transfers: List[Transfer],
    ) -> Optional[Swap]:
        raise NotImplementedError()


class LiquidationClassifier(Classifier):
    @staticmethod
    def get_classification() -> Classification:
        return Classification.liquidate

    @staticmethod
    @abstractmethod
    def parse_liquidation(
        liquidation_trace: DecodedCallTrace,
        child_transfers: List[Transfer],
        child_traces: List[ClassifiedTrace],
    ) -> Optional[Liquidation]:
        raise NotImplementedError()


class SeizeClassifier(Classifier):
    @staticmethod
    def get_classification() -> Classification:
        return Classification.seize


class NftTradeClassifier(Classifier):
    @staticmethod
    def get_classification() -> Classification:
        return Classification.nft_trade

    @staticmethod
    @abstractmethod
    def parse_trade(
        trace: DecodedCallTrace,
        child_transfers: List[Transfer],
    ) -> Optional[NftTrade]:
        raise NotImplementedError()


class ClassifierSpec(BaseModel):
    abi_name: str
    protocol: Optional[Protocol] = None
    valid_contract_addresses: Optional[List[str]] = None
    classifiers: Dict[str, Type[Classifier]] = {}