# pragma pylint: disable=missing-docstring,C0103,protected-access

import freqtrade.tests.conftest as tt  # test tools
from unittest.mock import MagicMock

# whitelist, blacklist, filtering, all of that will
# eventually become some rules to run on a generic ACL engine
# perhaps try to anticipate that by using some python package


def whitelist_conf():
    config = tt.default_conf()

    config['stake_currency'] = 'BTC'
    config['exchange']['pair_whitelist'] = [
        'ETH/BTC',
        'TKN/BTC',
        'TRST/BTC',
        'SWT/BTC',
        'BCC/BTC'
    ]

    config['exchange']['pair_blacklist'] = [
        'BLK/BTC'
    ]

    return config


def test_refresh_market_pair_not_in_whitelist(mocker, markets):
    conf = whitelist_conf()

    freqtradebot = tt.get_patched_freqtradebot(mocker, conf)

    mocker.patch('freqtrade.exchange.Exchange.get_markets', markets)
    refreshedwhitelist = freqtradebot._refresh_whitelist(
        conf['exchange']['pair_whitelist'] + ['XXX/BTC']
    )
    # List ordered by BaseVolume
    whitelist = ['ETH/BTC', 'TKN/BTC']
    # Ensure all except those in whitelist are removed
    assert whitelist == refreshedwhitelist


def test_refresh_whitelist(mocker, markets):
    conf = whitelist_conf()
    freqtradebot = tt.get_patched_freqtradebot(mocker, conf)

    mocker.patch('freqtrade.exchange.Exchange.get_markets', markets)
    refreshedwhitelist = freqtradebot._refresh_whitelist(conf['exchange']['pair_whitelist'])

    # List ordered by BaseVolume
    whitelist = ['ETH/BTC', 'TKN/BTC']
    # Ensure all except those in whitelist are removed
    assert whitelist == refreshedwhitelist


def test_refresh_whitelist_dynamic(mocker, markets, tickers):
    conf = whitelist_conf()
    freqtradebot = tt.get_patched_freqtradebot(mocker, conf)
    mocker.patch.multiple(
        'freqtrade.exchange.Exchange',
        get_markets=markets,
        get_tickers=tickers,
        exchange_has=MagicMock(return_value=True)
    )

    # argument: use the whitelist dynamically by exchange-volume
    whitelist = ['ETH/BTC', 'TKN/BTC']

    refreshedwhitelist = freqtradebot._refresh_whitelist(
        freqtradebot._gen_pair_whitelist(conf['stake_currency'])
    )

    assert whitelist == refreshedwhitelist


def test_refresh_whitelist_dynamic_empty(mocker, markets_empty):
    conf = whitelist_conf()
    freqtradebot = tt.get_patched_freqtradebot(mocker, conf)
    mocker.patch('freqtrade.exchange.Exchange.get_markets', markets_empty)

    # argument: use the whitelist dynamically by exchange-volume
    whitelist = []
    conf['exchange']['pair_whitelist'] = []
    freqtradebot._refresh_whitelist(whitelist)
    pairslist = conf['exchange']['pair_whitelist']

    assert set(whitelist) == set(pairslist)