import fin_defs
from decimal import Decimal
import fin_depo
import datetime

import crypto_seller

class SellerMock(fin_depo.data.DepoFetcher):

    def __init__(self, asset: fin_defs.Asset, initial_amount: Decimal):
        self.asset = asset
        self.amount_left = initial_amount

    def get_depo(self) -> fin_depo.data.Depo:
        return fin_depo.data.DepoSingle('TestDepo', datetime.datetime.now(tz=datetime.UTC), {self.asset:self.amount_left})

    def place_market_order(self, input_asset: fin_defs.Asset, input_amount:
                           Decimal, output_asset: fin_defs.Asset) -> fin_depo.data.Depo:
        assert input_amount <= self.amount_left, 'Attempt to sell too much'
        self.amount_left -= input_amount

        return fin_depo.data.TradeOrderDetails(
            input_asset=input_asset,
            input_amount=input_amount,
            output_asset=output_asset,
            output_amount=input_amount, # TODO?
            fee_asset=input_asset,
            fee_amount=Decimal(0),
            order_id=10000000 - self.amount_left,
            raw_order_details={'TEST': 1, 'DATA': 2},
        )


def test_auto_run():
    config = crypto_seller.AutoSellConfig(
        input_amount_range=(Decimal('1'), Decimal('1')),
        interval_range=(datetime.timedelta(seconds=0), datetime.timedelta(seconds=0)),
        input_asset=fin_defs.USDT,
        output_asset=fin_defs.USD,
        exit_when_empty=True,
    )
    seller = SellerMock(fin_defs.USDT, Decimal('1000'))

    crypto_seller.run_auto_sell(seller, config)

    assert seller.amount_left == 0