"""Test interactions with the CLI."""

# Copyright (C) 2019 Mike Shoup
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

from click.testing import CliRunner
import pytest

from synthale.cli import main


def test_main_help():
    """Test the help output of the main CLI command."""
    runner = CliRunner()
    result = runner.invoke(main, ['--help'])
    assert 'INPUT_PATH' in result.output
    assert 'OUTPUT_PATH' in result.output


def test_main_directory(tmpdir, md_recipes):
    """Test command where input is a directory."""
    runner = CliRunner()
    result = runner.invoke(main, ['tests/recipes', str(tmpdir)])

    assert result.exit_code == 0
    assert result.output.startswith(
        "Generating markdown from 'tests/recipes'..."
    )

    for recipe in md_recipes:
        path = tmpdir.join(recipe.filename)
        assert path.read() == recipe.markdown


def test_main_file(tmpdir):
    """Test command where input is a file."""
    runner = CliRunner()
    result = runner.invoke(main, ['tests/recipes/weizen.xml', str(tmpdir)])

    assert result.exit_code == 0
    assert result.output.startswith(
        "Generating markdown from 'tests/recipes/weizen.xml'..."
    )

    path = tmpdir.join('weizen.md')
    assert path.read().startswith('Weizen')


@pytest.mark.parametrize('option,flag,expected', (
    ('--vol-unit', 'gallons', '6.0 gal\\'),
    ('--vol-unit', 'liters', '22.7 L\\'),
    ('--hop-unit', 'ounces', '| 1.0 oz |'),
    ('--hop-unit', 'pounds', '| 0.06 lb |'),
    ('--hop-unit', 'grams', '| 28.3 g |'),
    ('--hop-unit', 'kilograms', '| 0.03 kg |'),
    ('--fermentable-unit', 'ounces', '| 144.0 oz |'),
    ('--fermentable-unit', 'pounds', '| 9.00 lb |'),
    ('--fermentable-unit', 'grams', '| 4082.3 g |'),
    ('--fermentable-unit', 'kilograms', '| 4.08 kg |'),
    ('--temp-unit', 'fahrenheit', '| 152.0 °F    |'),
    ('--temp-unit', 'celsius', '| 66.7 °C     |')
))
def test_main_units(tmpdir, option, flag, expected):
    """Test units options."""
    runner = CliRunner()
    result = runner.invoke(
        main, [option, flag, 'tests/recipes/coffee-stout.xml', str(tmpdir)]
    )

    assert result.exit_code == 0

    path = tmpdir.join('coffee_stout.md')
    result = path.read()
    print(result)
    assert expected in result