108 lines
2.4 KiB
Python
108 lines
2.4 KiB
Python
# piker: trading gear for hackers
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# Copyright (C) Tyler Goodlet (in stewardship for pikers)
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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'''
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"Accounting for degens": count dem numberz that tracks how much you got
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for tendiez.
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'''
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from ..log import get_logger
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from .calc import (
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iter_by_dt,
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)
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from ._ledger import (
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Transaction,
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TransactionLedger,
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open_trade_ledger,
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)
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from ._pos import (
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Account,
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load_account,
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load_account_from_ledger,
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open_pps,
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open_account,
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Position,
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)
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from ._mktinfo import (
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Asset,
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dec_digits,
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digits_to_dec,
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MktPair,
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Symbol,
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unpack_fqme,
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_derivs as DerivTypes,
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)
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from ._allocate import (
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mk_allocator,
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Allocator,
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)
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log = get_logger(__name__)
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__all__ = [
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'Account',
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'Allocator',
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'Asset',
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'MktPair',
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'Position',
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'Symbol',
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'Transaction',
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'TransactionLedger',
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'dec_digits',
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'digits_to_dec',
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'iter_by_dt',
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'load_account',
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'load_account_from_ledger',
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'mk_allocator',
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'open_account',
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'open_pps',
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'open_trade_ledger',
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'unpack_fqme',
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'DerivTypes',
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]
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def get_likely_pair(
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src: str,
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dst: str,
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bs_mktid: str,
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) -> str | None:
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'''
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Attempt to get the likely trading pair matching a given destination
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asset `dst: str`.
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'''
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try:
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src_name_start: str = bs_mktid.rindex(src)
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except (
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ValueError, # substr not found
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):
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# TODO: handle nested positions..(i.e.
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# positions where the src fiat was used to
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# buy some other dst which was furhter used
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# to buy another dst..)
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# log.warning(
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# f'No src fiat {src} found in {bs_mktid}?'
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# )
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return None
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likely_dst: str = bs_mktid[:src_name_start]
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if likely_dst == dst:
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return bs_mktid
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