core/bfxbot/bfxbot.py

from time import sleep
from typing import Dict, List
from bfxbot.bfxwrapper import BfxWrapper
from bfxbot.currency import Symbol
from bfxbot.models import SymbolStatus, Ticker, EventHandler, Strategy, Event, EventKind


class BfxBot:
    def __init__(self, api_key: str, api_secret: str, symbols: List[Symbol], tick_duration: int = 1, ):
        if api_key is None:
            print("API_KEY is not set!")
            raise ValueError

        if api_secret is None:
            print("API_SECRET is not set!")
            raise ValueError

        self.bfx: BfxWrapper = BfxWrapper(api_key, api_secret)
        self.status: Dict[Symbol, SymbolStatus] = {}
        self.ticker: Ticker = Ticker(tick_duration)

        if isinstance(symbols, Symbol):
            symbols = [symbols]

        self.symbols: List[Symbol] = symbols

        # init symbol statuses
        for s in self.symbols:
            self.status[s] = SymbolStatus(s)

    async def __update_status__(self):
        active_positions = await self.bfx.get_active_position()

        for symbol in self.status:
            # updating tick
            self.status[symbol].current_tick = self.ticker.current_tick

            # updating last price
            last_price = await self.bfx.get_current_prices(symbol)
            last_price = last_price[0]

            self.status[symbol].set_price(self.ticker.current_tick, last_price)

            # updating positions
            for p in [x for x in active_positions if x.symbol == symbol]:
                await self.status[p.symbol].add_position(p)

            # # updating orders
            # active_orders = await self.bfx.get_active_orders(symbol)
            #
            # for o in active_orders:
            #     self.status[symbol].add_order(o)

            # emitting event
            await self.status[symbol].__add_event__(Event(EventKind.NEW_TICK, 0, self.ticker.current_tick))


    def event_handler(self, symbol) -> EventHandler:
        if symbol not in self.status:
            return None

        return self.status[symbol].eh

    def status(self, symbol: Symbol) -> SymbolStatus:
        if symbol not in self.status:
            return None

        return self.status[symbol]

    async def start(self):
        await self.__update_status__()

    async def update(self):
        self.ticker.inc()
        sleep(self.ticker.seconds)
        await self.__update_status__()

    def set_strategy(self, symbol, strategy: Strategy):
        if symbol in self.status:
            self.status[symbol].strategy = strategy
        else:
            self.status[symbol] = SymbolStatus(symbol, strategy)