from typing import Iterator, Callable, Protocol, Literal

import traceback

from pycfhelpers.logger import log
from DAP.Crypto import HashFast, Cert
from CellFrame.Network import Net
from CellFrame.Chain import ChainAtomPtr, Ledger, ChainAddr, Mempool

from .consensus import CFEvent, CFBlock
from .datums import CFDatum, CFSubDatum,  CFDatumTX, CFDatumEmission
from .types import CFNetState, ticker, ledger_cache_rc
from ..common.types import ChainTypes
from dataclasses import dataclass


class NetFee:
    def __init__(self, net: 'CFNet'):
        self.net = net
        self.tx_fee = str(self.net._origin_net.txFee)
        self.tx_fee_addr = str(self.net._origin_net.txFeeAddr)
        self.validator_avg_fee = str(self.net._origin_net.validatorAverageFee)
        self.validator_max_fee = str(self.net._origin_net.validatorMaxFee)
        self.validator_min_fee = str(self.net._origin_net.validatorMinFee)
        self.native_ticker = self.net._origin_net.nativeTicker


class CFNet:
    def __init__(self, name: str):
        self.name = name
        self._origin_net = Net.byName(name)
        if not self._origin_net:
            raise RuntimeError(f"No such net: {name}")

        self.address = str(self._origin_net.getCurAddr())
        self.main = CFChain(self, 'main')
        self.zerochain = CFChain(self, 'zerochain')

        self.fee_data = NetFee(self)

    @staticmethod
    def active_nets() -> list['CFNet']:
        return [CFNet(n.getName()) for n in Net.getNets()]

    @staticmethod
    def net_id_from_wallet(wallet) -> int:
        return ChainAddr.fromStr(str(wallet)).getNetId().long()

    @property
    def id(self) -> int:
        return self._origin_net.id.long()

    @property
    def chains(self) -> list['CFChain']:
        return [self.main, self.zerochain]

    @property
    def group_alias(self) -> str:
        return self._origin_net.gdb_group_alias

    def get_ledger(self) -> 'CFLedger':
        return CFLedger(self, self._origin_net.getLedger())

    def register_gdbsync_notification_callback(self, callback: Callable, *args, **kwargs):
        def callback_wrapper(op_code, group, key, value, *other):
            callback(self, op_code, group, key, value, *args, net=self, **kwargs)

        self._origin_net.addNotify(callback_wrapper, ())

    def change_state(self, state: CFNetState):
        if state == CFNetState.NET_STATE_OFFLINE:
            self._origin_net.stop()
        elif state == CFNetState.NET_STATE_ONLINE:
            self._origin_net.start()
        else:
            raise NotImplemented("This state not implemented")


class MempoolCallback(Protocol):
    def __call__(self, op_code: Literal["a", "d"], datum: CFDatum, *args, chain: 'CFChain', **kwargs) -> None:
        pass


class CFChain:
    def __init__(self, net: CFNet, chain_name: str):
        self.net = net
        self._origin_chain = net._origin_net.getChainByName(chain_name)
        if not self._origin_chain:
            raise RuntimeError(f"chain with name={chain_name} not found in net with name={net.name}")
        self.type = self._origin_chain.getCSName()
        self.name = chain_name

    def get_atoms(self) -> Iterator[CFBlock | CFEvent]:
        iterator = self._origin_chain.createAtomIter(False)
        ptr = self._origin_chain.atomIterGetFirst(iterator)

        if not ptr:
            log.message("not ptr")
            return []

        atom, size = ptr
        while atom:
            if size <= 0:
                atom, size = self._origin_chain.atomIterGetNext(iterator)
                continue
            if self.type == ChainTypes.esbocs:
                yield CFBlock(atom=atom, chain=self)
            elif self.type == ChainTypes.dag_poa:
                yield CFEvent(atom=atom, chain=self)
            else:
                raise TypeError(f"Invalid Chain type={self.type}")

            atom, size = self._origin_chain.atomIterGetNext(iterator)

    def get_datums(self) -> Iterator[CFDatum]:
        for atom in self.get_atoms():
            for datum in atom.get_datums():
                yield datum

    def get_transactions(self) -> Iterator[CFDatumTX]:
        for datum in self.get_datums():
            if datum._origin_datum.isDatumTX():
                yield datum.get_sub_datum()

    def get_mempool(self) -> 'CFMempool':
        return CFMempool(self)

    def register_mempool_notification_callback(self, callback: MempoolCallback, *args, **kwargs):
        def callback_wrapper(op_code, group, key, value, *other):
            try:
                mempool = CFMempool(self)
                if value:
                    datum = mempool.get_datum_from_bytes(value)
                else:
                    datum = key

                log.message(f"Mempool callback: {op_code=} {key=} {datum=}  ")
                callback(op_code, datum, *args, chain=self, **kwargs)
            except Exception:
                log.error(f"Error = {traceback.format_exc()}")

        try:
            self._origin_chain.addMempoolNotify(callback_wrapper, ())
        except Exception:
            log.error(f"Error = {traceback.format_exc()}")

    def register_atom_notification_callback(self, callback, *args, **kwargs):
        def callback_wrapper(atom: ChainAtomPtr, size, *other):
            try:
                if self.type == ChainTypes.esbocs:
                    cf_atom = CFBlock(atom, self)
                elif self.type == ChainTypes.dag_poa:
                    cf_atom = CFEvent(atom, self)
                else:
                    raise TypeError(f"Invalid Chain type={self.type}")
                callback(cf_atom, size, *args, chain=self, **kwargs)
            except Exception:
                log.error(traceback.format_exc())

        self._origin_chain.addAtomNotify(callback_wrapper, ())


class CFLedger:
    def __init__(self, net: CFNet, ledger: Ledger = None):
        self.net = net
        self._origin_ledger = ledger or self.net.get_ledger()

    def get_tx_ticker(self, datum: CFDatumTX) -> ticker | None:
        return self._origin_ledger.txGetMainTickerAndLedgerRc(datum._origin_sub_datum)[0]

    def get_tx_ledger_rc(self, datum: CFDatumTX) -> ledger_cache_rc | None:
        return self._origin_ledger.txGetMainTickerAndLedgerRc(datum._origin_sub_datum)[1]

    def calc_address_balances(self, address: str) -> dict[ticker, str] | dict:
        res = {}
        chain_addr = ChainAddr.fromStr(address)
        tickers = self._origin_ledger.addrGetTokenTickerAll(chain_addr)
        for ticker in tickers:
            balance = str(self._origin_ledger.calcBalance(chain_addr, ticker))
            res[ticker] = balance
        return res

    def token_auth_signs_pkey_hashes(self, datum: CFDatum) -> list[str]:  # list[hashes]
        """
        Хэши публичных ключей для подписи эмиссии тикера. cellframe-node-cli ledger list coins -net raiden
        """
        pkey_hashes = self._origin_ledger.tokenAuthPkeysHashes(datum.get_sub_datum().ticker)
        return [str(pkey_hash) for pkey_hash in pkey_hashes]

    def token_auth_signs_valid(self, datum: CFDatum) -> int:
        """
        Количество валидных подписей
        """
        return self._origin_ledger.tokenAuthSignsValid(datum.get_sub_datum().ticker) or 0

    def token_auth_signs_total(self, datum: CFDatum) -> int:
        """
        Максимально возможное количество подписей
        """
        return self._origin_ledger.tokenAuthSignsTotal(datum.get_sub_datum().ticker) or 0

    def has_emission(self, emission: CFDatumEmission) -> bool:
        """
        Check Emission in chain
        """
        sub_datum = self._origin_ledger.tokenEmissionFind(HashFast.fromString(emission.hash))
        if sub_datum is None:
            return False
        return True

    def tx_by_hash(self, hash: str) -> CFDatumTX:
        hf = HashFast.fromString(hash)

        tx = CFDatumTX(self._origin_ledger.txFindByHash(hf))

        return tx

    def register_ledger_tx_notification_callback(self, callback, *args, **kwargs):
        def callback_wrapper(ledger, tx, *other):
            callback(ledger, tx, *args, net=self.net, **kwargs)

        self._origin_ledger.txAddNotify(callback_wrapper, (args, kwargs))


class CFMempool:
    def __init__(self, chain: CFChain):
        self.chain = chain

    def get_datums(self) -> list[CFDatum]:
        data = Mempool.list(self.chain.net._origin_net, self.chain._origin_chain)
        return [CFDatum(None, datum, net=self.chain.net) for datum in data.values()]

    def get_datum_from_bytes(self, value: bytes) -> CFDatum | None:
        datum = Mempool.datumExtract(value)
        if datum is None:
            return None
            # raise ValueError(f"Incorrect bytes={value} to extract to Datum")
        return CFDatum(None, datum, self.chain.net)

    def valid_signs_table(self):
        pass

    def reason(self):
        pass

    def remove(self, datum: CFDatum | CFSubDatum) -> bool:
        return Mempool.remove(self.chain._origin_chain, datum.hash)