def decode(self, hex: str) -> dict:
'''decode card protobuf'''
script = NulldataScript.unhexlify(hex).decompile().split(' ')[1]
return parse_card_transfer_metainfo(bytes.fromhex(script),
Settings.deck_version)
def card_parser(args: Tuple[Provider, Deck, dict]) -> list:
'''this function wraps all the card transfer parsing'''
provider = args[0]
deck = args[1]
raw_tx = args[2]
try:
validate_card_transfer_p2th(deck, raw_tx) # validate P2TH first
card_metainfo = parse_card_transfer_metainfo(
read_tx_opreturn(raw_tx), deck.version)
vouts = raw_tx["vout"]
sender = find_tx_sender(provider, raw_tx)
try: # try to get block seq number
blockseq = tx_serialization_order(provider,
raw_tx["blockhash"],
raw_tx["txid"])
except KeyError:
blockseq = 0
try: # try to get block number of block when this tx was written
blocknum = provider.getblock(raw_tx["blockhash"])["height"]
except KeyError:
blocknum = 0
try: # try to get tx confirmation count
tx_confirmations = raw_tx["confirmations"]
except KeyError:
tx_confirmations = 0
cards = postprocess_card(card_metainfo, raw_tx, sender, vouts,
blockseq, blocknum, tx_confirmations,
deck)
cards = [CardTransfer(**card) for card in cards]
except (InvalidCardTransferP2TH, CardVersionMismatch,
CardNumberOfDecimalsMismatch, InvalidVoutOrder,
RecieverAmountMismatch, DecodeError, TypeError,
InvalidNulldataOutput) as e:
return []
return cards