from random import randint
from unittest.mock import MagicMock

import ccxt
import pytest

from freqtrade.exceptions import DependencyException, InvalidOrderException, OperationalException
from tests.conftest import get_patched_exchange
from tests.exchange.test_exchange import ccxt_exceptionhandlers


@pytest.mark.parametrize('order_type', ['market', 'limit'])
@pytest.mark.parametrize('limitratio,expected,side', [
    (None, 220 * 0.99, "sell"),
    (0.99, 220 * 0.99, "sell"),
    (0.98, 220 * 0.98, "sell"),
])
def test_stoploss_order_kucoin(default_conf, mocker, limitratio, expected, side, order_type):
    api_mock = MagicMock()
    order_id = 'test_prod_buy_{}'.format(randint(0, 10 ** 6))

    api_mock.create_order = MagicMock(return_value={
        'id': order_id,
        'info': {
            'foo': 'bar'
        }
    })
    default_conf['dry_run'] = False
    mocker.patch('freqtrade.exchange.Exchange.amount_to_precision', lambda s, x, y: y)
    mocker.patch('freqtrade.exchange.Exchange.price_to_precision', lambda s, x, y: y)

    exchange = get_patched_exchange(mocker, default_conf, api_mock, 'kucoin')
    if order_type == 'limit':
        with pytest.raises(OperationalException):
            order = exchange.stoploss(pair='ETH/BTC', amount=1, stop_price=190,
                                      order_types={
                                          'stoploss': order_type,
                                          'stoploss_on_exchange_limit_ratio': 1.05},
                                      side=side, leverage=1.0)

    api_mock.create_order.reset_mock()
    order_types = {'stoploss': order_type}
    if limitratio is not None:
        order_types.update({'stoploss_on_exchange_limit_ratio': limitratio})
    order = exchange.stoploss(pair='ETH/BTC', amount=1, stop_price=220,
                              order_types=order_types, side=side, leverage=1.0)

    assert 'id' in order
    assert 'info' in order
    assert order['id'] == order_id
    assert api_mock.create_order.call_args_list[0][1]['symbol'] == 'ETH/BTC'
    assert api_mock.create_order.call_args_list[0][1]['type'] == order_type
    assert api_mock.create_order.call_args_list[0][1]['side'] == 'sell'
    assert api_mock.create_order.call_args_list[0][1]['amount'] == 1
    # Price should be 1% below stopprice
    if order_type == 'limit':
        assert api_mock.create_order.call_args_list[0][1]['price'] == expected
    else:
        assert api_mock.create_order.call_args_list[0][1]['price'] is None

    assert api_mock.create_order.call_args_list[0][1]['params'] == {
        'stopPrice': 220,
        'stop': 'loss'
    }

    # test exception handling
    with pytest.raises(DependencyException):
        api_mock.create_order = MagicMock(side_effect=ccxt.InsufficientFunds("0 balance"))
        exchange = get_patched_exchange(mocker, default_conf, api_mock, 'kucoin')
        exchange.stoploss(pair='ETH/BTC', amount=1, stop_price=220,
                          order_types={}, side=side, leverage=1.0)

    with pytest.raises(InvalidOrderException):
        api_mock.create_order = MagicMock(
            side_effect=ccxt.InvalidOrder("kucoin Order would trigger immediately."))
        exchange = get_patched_exchange(mocker, default_conf, api_mock, 'kucoin')
        exchange.stoploss(pair='ETH/BTC', amount=1, stop_price=220,
                          order_types={}, side=side, leverage=1.0)

    ccxt_exceptionhandlers(mocker, default_conf, api_mock, "kucoin",
                           "stoploss", "create_order", retries=1,
                           pair='ETH/BTC', amount=1, stop_price=220, order_types={},
                           side=side, leverage=1.0)


def test_stoploss_order_dry_run_kucoin(default_conf, mocker):
    api_mock = MagicMock()
    order_type = 'market'
    default_conf['dry_run'] = True
    mocker.patch('freqtrade.exchange.Exchange.amount_to_precision', lambda s, x, y: y)
    mocker.patch('freqtrade.exchange.Exchange.price_to_precision', lambda s, x, y: y)

    exchange = get_patched_exchange(mocker, default_conf, api_mock, 'kucoin')

    with pytest.raises(OperationalException):
        order = exchange.stoploss(pair='ETH/BTC', amount=1, stop_price=190,
                                  order_types={'stoploss': 'limit',
                                               'stoploss_on_exchange_limit_ratio': 1.05},
                                  side='sell', leverage=1.0)

    api_mock.create_order.reset_mock()

    order = exchange.stoploss(pair='ETH/BTC', amount=1, stop_price=220,
                              order_types={}, side='sell', leverage=1.0)

    assert 'id' in order
    assert 'info' in order
    assert 'type' in order

    assert order['type'] == order_type
    assert order['price'] == 220
    assert order['amount'] == 1


def test_stoploss_adjust_kucoin(mocker, default_conf):
    exchange = get_patched_exchange(mocker, default_conf, id='kucoin')
    order = {
        'type': 'limit',
        'price': 1500,
        'stopPrice': 1500,
        'info': {'stopPrice': 1500, 'stop': "limit"},
    }
    assert exchange.stoploss_adjust(1501, order, 'sell')
    assert not exchange.stoploss_adjust(1499, order, 'sell')
    # Test with invalid order case
    order['stopPrice'] = None
    assert exchange.stoploss_adjust(1501, order, 'sell')