"""
CLI testing, dawg.
"""
import json
import subprocess
import pytest
import tempfile
import os.path

import piker.watchlists as wl


def run(cmd, *args):
    """Run cmd and check for zero return code.
    """
    cp = subprocess.run(cmd.split() + list(args))
    cp.check_returncode()
    return cp


def verify_keys(tickers, quotes):
    """Verify all ticker names are keys in ``quotes_dict``.
    """
    for quote in quotes:
        assert quote['key'] in tickers


@pytest.fixture
def nyse_tickers():
    """List of well known NYSE ticker symbols.
    """
    return ('TD', 'CRON', 'TSLA', 'AAPL')


def test_known_quotes(capfd, nyse_tickers):
    """Verify quotes are dumped to the console as json.
    """
    run(f"piker quote {' '.join(nyse_tickers)}")

    # verify output can be parsed as json
    out, err = capfd.readouterr()
    quotes = json.loads(out)
    verify_keys(nyse_tickers, quotes)


@pytest.mark.parametrize(
    'multiple_tickers',
    [True, False]
)
def test_quotes_ticker_not_found(
    capfd, caplog, nyse_tickers, multiple_tickers
):
    """Verify that if a ticker can't be found it's quote value is
    ``None`` and a warning log message is emitted to the console.
    """
    bad_ticker = ('doggy',)
    tickers = bad_ticker + nyse_tickers if multiple_tickers else bad_ticker

    run(f"piker quote {' '.join(tickers)}")

    out, err = capfd.readouterr()
    if out:
        # verify output can be parsed as json
        quotes = json.loads(out)
        verify_keys(tickers, quotes)
        # check for warning log message when some quotes are found
        warnmsg = f'Could not find symbol {bad_ticker[0]}'
        assert warnmsg in err
    else:
        # when no quotes are found we should get an error message
        errmsg = f'No quotes could be found for {bad_ticker}'
        assert errmsg in err


def test_api_method(nyse_tickers, capfd):
    """Ensure a low level api method can be called via CLI.
    """
    run(f"piker api search prefix='WEED'")
    out, err = capfd.readouterr()
    quotes_dict = json.loads(out)
    assert isinstance(quotes_dict, dict)


def test_api_method_not_found(nyse_tickers, capfd):
    """Ensure an error messages is printed when an API method isn't found.
    """
    bad_meth = 'doggy'
    run(f"piker api {bad_meth} names={' '.join(nyse_tickers)}")
    out, err = capfd.readouterr()
    assert 'null' in out
    assert f'No api method `{bad_meth}` could be found?' in err


@pytest.fixture
def temp_dir():
    """Creates a path to a pretend config dir in a temporary directory for
    testing.
    """
    with tempfile.TemporaryDirectory() as tempdir:
        yield os.path.join(tempdir, 'piker')


@pytest.fixture
def ex_watchlists():
    """Made up watchlists to use for expected outputs.
    """
    watchlists = {
        'dad': list(sorted(['GM', 'TSLA', 'DOL.TO', 'CIM', 'SPY', 'SHOP.TO'])),
        'pharma': ['ATE.VN'],
    }
    return watchlists


@pytest.fixture
def ex_watchlists_wbi(ex_watchlists):
    """Made up watchlists + built-in list(s) to use for expected outputs.
    """
    with_builtins = ex_watchlists.copy()
    with_builtins.update(wl._builtins)
    return with_builtins


@pytest.fixture
def piker_dir(temp_dir, ex_watchlists):
    wl.make_config_dir(temp_dir)
    json_file_path = os.path.join(temp_dir, 'watchlists.json')
    # push test watchlists to file without built-ins
    to_write = ex_watchlists.copy()
    wl.write_to_file(to_write, json_file_path)
    yield json_file_path


def test_show_watchlists(capfd, piker_dir, ex_watchlists_wbi):
    """Ensure all watchlists are printed as json to stdout.

    (Can't seem to get pretty formatting to work, pytest thing?)
    """
    expected_out = json.dumps(ex_watchlists_wbi, indent=4, sort_keys=True)
    run(f"piker watchlists -d {piker_dir} show")
    out, err = capfd.readouterr()
    assert out.strip() == expected_out


def test_dump_watchlists(capfd, piker_dir, ex_watchlists):
    """Ensure watchlist is dumped without built-in lists.
    """
    expected_out = json.dumps(ex_watchlists)
    run(f"piker watchlists -d {piker_dir} dump")
    out, err = capfd.readouterr()
    assert out.strip() == expected_out


@pytest.mark.parametrize(
    'tickers', [('CRACK',), ('CRACK', 'SUIT',)]
)
def test_ticker_added_to_watchlists(capfd, piker_dir, ex_watchlists, tickers):
    """Verify that single or multi-ticker lists can be added.
    """
    for ticker in tickers:
        ex_watchlists['pharma'].append(ticker)
    run(f"piker watchlists -d {piker_dir} add pharma {' '.join(tickers)}")
    out = wl.ensure_watchlists(piker_dir)
    assert out == ex_watchlists


def test_ticker_removed_from_watchlists(capfd, piker_dir, ex_watchlists):
    expected_out = ex_watchlists.copy()
    expected_out['dad'].remove('SPY')
    run(f"piker watchlists -d {piker_dir} remove dad SPY")
    out = wl.ensure_watchlists(piker_dir)
    assert out == expected_out

    # removing a non-entry should be a no-op
    run(f"piker watchlists -d {piker_dir} remove dad SPY")
    out = wl.ensure_watchlists(piker_dir)


def test_group_deleted_from_watchlists(capfd, piker_dir, ex_watchlists):
    expected_out = ex_watchlists.copy()
    expected_out.pop('pharma')
    run(f"piker watchlists -d {piker_dir} delete pharma")
    out = wl.ensure_watchlists(piker_dir)
    assert out == expected_out


def test_watchlists_loaded(capfd, piker_dir):
    expected_out = {
        'dad': ['CIM', 'DOL.TO', 'GM', 'SHOP.TO', 'SPY', 'TSLA'],
        'pharma': ['ATE.VN'],
    }
    expected_out_text = json.dumps(expected_out)
    run(f"piker watchlists -d {piker_dir} load", expected_out_text)
    out = wl.ensure_watchlists(piker_dir)
    assert out == expected_out


def test_watchlists_are_merged(capfd, piker_dir):
    orig_watchlist = {
        'dad': ['CIM', 'DOL.TO', 'GM', 'SHOP.TO', 'SPY', 'TSLA'],
        'indexes': ['DAX', 'DIA', 'QQQ', 'SPY'],
        'pharma': ['ATE.VN'],
    }
    list_to_merge = json.dumps({
        'drugs': ['CRACK'],
        'pharma': ['ATE.VN', 'MALI', 'PERCOCET']
    })
    expected_out = {
        'dad': ['CIM', 'DOL.TO', 'GM', 'SHOP.TO', 'SPY', 'TSLA'],
        'indexes': ['DAX', 'DIA', 'QQQ', 'SPY'],
        'pharma': ['ATE.VN', 'MALI', 'PERCOCET'],
        'drugs': ['CRACK']
    }
    wl.write_to_file(orig_watchlist, piker_dir)
    run(f"piker watchlists -d {piker_dir} merge", list_to_merge)
    out = wl.ensure_watchlists(piker_dir)
    assert out == expected_out