"""
Unit test file for main.py
"""

import logging
from unittest.mock import MagicMock

import pytest

from freqtrade import OperationalException
from freqtrade.main import main, set_loggers
from freqtrade.tests.conftest import log_has


def test_parse_args_backtesting(mocker) -> None:
    """
    Test that main() can start backtesting and also ensure we can pass some specific arguments
    further argument parsing is done in test_arguments.py
    """
    backtesting_mock = mocker.patch('freqtrade.optimize.backtesting.start', MagicMock())
    main(['backtesting'])
    assert backtesting_mock.call_count == 1
    call_args = backtesting_mock.call_args[0][0]
    assert call_args.config == 'config.json'
    assert call_args.live is False
    assert call_args.loglevel == 20
    assert call_args.subparser == 'backtesting'
    assert call_args.func is not None
    assert call_args.ticker_interval is None


def test_main_start_hyperopt(mocker) -> None:
    """
    Test that main() can start hyperopt
    """
    hyperopt_mock = mocker.patch('freqtrade.optimize.hyperopt.start', MagicMock())
    main(['hyperopt'])
    assert hyperopt_mock.call_count == 1
    call_args = hyperopt_mock.call_args[0][0]
    assert call_args.config == 'config.json'
    assert call_args.loglevel == 20
    assert call_args.subparser == 'hyperopt'
    assert call_args.func is not None


def test_set_loggers() -> None:
    """
    Test set_loggers() update the logger level for third-party libraries
    """
    previous_value1 = logging.getLogger('requests.packages.urllib3').level
    previous_value2 = logging.getLogger('telegram').level

    set_loggers()

    value1 = logging.getLogger('requests.packages.urllib3').level
    assert previous_value1 is not value1
    assert value1 is logging.INFO

    value2 = logging.getLogger('telegram').level
    assert previous_value2 is not value2
    assert value2 is logging.INFO


def test_main_fatal_exception(mocker, default_conf, caplog) -> None:
    """
    Test main() function
    In this test we are skipping the while True loop by throwing an exception.
    """
    mocker.patch.multiple(
        'freqtrade.freqtradebot.FreqtradeBot',
        _init_modules=MagicMock(),
        worker=MagicMock(side_effect=Exception),
        clean=MagicMock(),
    )
    mocker.patch(
        'freqtrade.configuration.Configuration._load_config_file',
        lambda *args, **kwargs: default_conf
    )
    mocker.patch('freqtrade.freqtradebot.CryptoToFiatConverter', MagicMock())
    mocker.patch('freqtrade.freqtradebot.RPCManager', MagicMock())

    args = ['-c', 'config.json.example']

    # Test Main + the KeyboardInterrupt exception
    with pytest.raises(SystemExit):
        main(args)
    assert log_has('Using config: config.json.example ...', caplog.record_tuples)
    assert log_has('Fatal exception!', caplog.record_tuples)


def test_main_keyboard_interrupt(mocker, default_conf, caplog) -> None:
    """
    Test main() function
    In this test we are skipping the while True loop by throwing an exception.
    """
    mocker.patch.multiple(
        'freqtrade.freqtradebot.FreqtradeBot',
        _init_modules=MagicMock(),
        worker=MagicMock(side_effect=KeyboardInterrupt),
        clean=MagicMock(),
    )
    mocker.patch(
        'freqtrade.configuration.Configuration._load_config_file',
        lambda *args, **kwargs: default_conf
    )
    mocker.patch('freqtrade.freqtradebot.CryptoToFiatConverter', MagicMock())
    mocker.patch('freqtrade.freqtradebot.RPCManager', MagicMock())

    args = ['-c', 'config.json.example']

    # Test Main + the KeyboardInterrupt exception
    with pytest.raises(SystemExit):
        main(args)
    assert log_has('Using config: config.json.example ...', caplog.record_tuples)
    assert log_has('SIGINT received, aborting ...', caplog.record_tuples)


def test_main_operational_exception(mocker, default_conf, caplog) -> None:
    """
    Test main() function
    In this test we are skipping the while True loop by throwing an exception.
    """
    mocker.patch.multiple(
        'freqtrade.freqtradebot.FreqtradeBot',
        _init_modules=MagicMock(),
        worker=MagicMock(side_effect=OperationalException('Oh snap!')),
        clean=MagicMock(),
    )
    mocker.patch(
        'freqtrade.configuration.Configuration._load_config_file',
        lambda *args, **kwargs: default_conf
    )
    mocker.patch('freqtrade.freqtradebot.CryptoToFiatConverter', MagicMock())
    mocker.patch('freqtrade.freqtradebot.RPCManager', MagicMock())

    args = ['-c', 'config.json.example']

    # Test Main + the KeyboardInterrupt exception
    with pytest.raises(SystemExit):
        main(args)
    assert log_has('Using config: config.json.example ...', caplog.record_tuples)
    assert log_has('Oh snap!', caplog.record_tuples)