# -*- coding: utf-8 -*-

from functools import wraps

import pytest
import click

from click_option_group import (
    optgroup,
    OptionGroup,
    GroupedOption,
    RequiredAnyOptionGroup,
    AllOptionGroup,
    RequiredAllOptionGroup,
    MutuallyExclusiveOptionGroup,
    RequiredMutuallyExclusiveOptionGroup,
)


def test_basic_functionality_first_api(runner):
    @click.command()
    @click.option('--hello')
    @optgroup('Group 1', help='Group 1 description')
    @optgroup.option('--foo1')
    @optgroup.option('--bar1')
    @click.option('--lol')
    @optgroup.group('Group 2', help='Group 2 description')
    @optgroup.option('--foo2')
    @optgroup.option('--bar2')
    @click.option('--goodbye')
    def cli(hello, foo1, bar1, lol, foo2, bar2, goodbye):
        click.echo(f'{foo1},{bar1},{foo2},{bar2}')

    result = runner.invoke(cli, ['--help'])

    assert not result.exception
    assert 'Group 1:' in result.output
    assert 'Group 1 description' in result.output
    assert 'Group 2:' in result.output
    assert 'Group 2 description' in result.output

    result = runner.invoke(cli, [
        '--foo1', 'foo1', '--bar1', 'bar1',
        '--foo2', 'foo2', '--bar2', 'bar2'])

    assert not result.exception
    assert 'foo1,bar1,foo2,bar2' in result.output


def test_noname_group(runner):
    @click.command()
    @optgroup()
    @optgroup.option('--foo')
    def cli(foo):
        pass

    result = runner.invoke(cli, ['--help'])
    assert 'Options:\n    --foo' in result.output

    @click.command()
    @optgroup(help='Group description')
    @optgroup.option('--foo')
    def cli(foo):
        pass

    result = runner.invoke(cli, ['--help'])
    assert 'Group description' in result.output


def test_mix_decl_first_api():
    with pytest.raises(TypeError, match=r"Check decorator position for \['--hello'\]"):
        @click.command()
        @optgroup('Group 1', help='Group 1 description')
        @optgroup.option('--foo')
        @click.option('--hello')
        @optgroup.option('--bar')
        def cli1(**params):
            pass

    with pytest.raises(TypeError, match=r"Check decorator position for \['--hello'\]"):
        @click.command()
        @optgroup('Group 1', help='Group 1 description')
        @click.option('--hello')
        @optgroup.option('--foo')
        @optgroup.option('--bar')
        def cli2(**params):
            pass

    with pytest.raises(TypeError, match=r"Check decorator position for \['--hello2'\]"):
        @click.command()
        @optgroup('Group 1', help='Group 1 description')
        @click.option('--hello1')
        @optgroup.option('--foo')
        @click.option('--hello2')
        @optgroup.option('--bar')
        def cli3(**params):
            pass


def test_missing_group_decl_first_api(runner):
    @click.command()
    @click.option('--hello1')
    @optgroup.option('--foo')
    @optgroup.option('--bar')
    @click.option('--hello2')
    def cli(**params):
        pass

    # FIXME: https://github.com/click-contrib/click-option-group/issues/65
    #  Now we just do not check not attached options for --help
    #  because handle_parse_result is not called in click >=8.1.8 for --help

    # result = runner.invoke(cli, ['--help'])
    #
    # assert result.exception
    # assert TypeError == result.exc_info[0]
    # assert 'Missing option group decorator' in str(result.exc_info[1])
    # assert '--foo' in str(result.exc_info[1])
    # assert '--bar' in str(result.exc_info[1])

    result = runner.invoke(cli, [])

    assert result.exception
    assert TypeError == result.exc_info[0]
    assert 'Missing option group decorator' in str(result.exc_info[1])
    assert '--foo' in str(result.exc_info[1])
    assert '--bar' in str(result.exc_info[1])

    result = runner.invoke(cli, ['--hello1', 'hello1'])

    assert result.exception
    assert TypeError == result.exc_info[0]
    assert 'Missing option group decorator' in str(result.exc_info[1])
    assert '--foo' in str(result.exc_info[1])
    assert '--bar' in str(result.exc_info[1])

    result = runner.invoke(cli, ['--foo', 'foo'])

    assert result.exception
    assert TypeError == result.exc_info[0]
    assert 'Missing option group decorator' in str(result.exc_info[1])
    assert '--foo' in str(result.exc_info[1])
    assert '--bar' in str(result.exc_info[1])


def test_missing_grouped_options_decl_first_api(runner):
    with pytest.warns(RuntimeWarning, match=r'The empty option group "Group 1"'):
        @click.command()
        @click.option('--hello1')
        @optgroup('Group 1', help='Group 1 description')
        @click.option('--hello2')
        def cli(**params):
            pass

    result = runner.invoke(cli, ['--help'])

    assert not result.exception
    assert 'Group 1:' not in result.output
    assert 'Group 1 description' not in result.output
    assert '--hello1' in result.output
    assert '--hello2' in result.output


def test_incorrect_option_group_cls():
    with pytest.raises(TypeError, match=r"must be a subclass of 'OptionGroup' class"):
        @click.command()
        @optgroup(cls=object)
        @optgroup.option('--foo')
        def cli(**params):
            pass


def test_option_group_unexpected_arguments():
    with pytest.raises(TypeError, match=r"'OptionGroup' constructor got an unexpected keyword argument 'oops'"):
        @click.command()
        @optgroup(oops=True)
        @optgroup.option('--foo')
        def cli(**params):
            pass


def test_incorrect_grouped_option_cls():
    @click.command()
    @optgroup()
    @optgroup.option('--foo', cls=GroupedOption)
    def cli1(**params):
        pass

    with pytest.raises(TypeError, match=r"must be a subclass of 'GroupedOption' class"):
        @click.command()
        @optgroup()
        @optgroup.option('--foo', cls=click.Option)
        def cli2(**params):
            pass


def test_option_group_name_help():
    group = OptionGroup()
    assert group.name == ''
    assert group.help == ''

    group = OptionGroup('Group Name', help='Group description')
    assert group.name == 'Group Name'
    assert group.help == 'Group description'


def test_basic_functionality_second_api(runner):
    group1 = OptionGroup('Group 1', help='Group 1 description')
    group2 = OptionGroup('Group 2', help='Group 2 description')

    @click.command()
    @click.option('--hello')
    @group1.option('--foo1')
    @group1.option('--bar1')
    @click.option('--lol')
    @group2.option('--foo2')
    @group2.option('--bar2')
    @click.option('--goodbye')
    def cli(hello, foo1, bar1, lol, foo2, bar2, goodbye):
        click.echo(f'{foo1},{bar1},{foo2},{bar2}')

    result = runner.invoke(cli, ['--help'])

    assert not result.exception
    assert 'Group 1:' in result.output
    assert 'Group 1 description' in result.output
    assert 'Group 2:' in result.output
    assert 'Group 2 description' in result.output

    result = runner.invoke(cli, [
        '--foo1', 'foo1', '--bar1', 'bar1',
        '--foo2', 'foo2', '--bar2', 'bar2'])

    assert not result.exception
    assert 'foo1,bar1,foo2,bar2' in result.output


def test_mix_decl_second_api():
    group1 = OptionGroup('Group 1', help='Group 1 description')

    with pytest.raises(TypeError, match=r"Check decorator position for \['--hello2'\]"):
        @click.command()
        @click.option('--hello1')
        @group1.option('--foo')
        @click.option('--hello2')
        @group1.option('--bar')
        @click.option('--hello3')
        def cli(**params):
            pass


def test_required_any_option_group(runner):
    group = RequiredAnyOptionGroup()
    assert group.name_extra == ['required_any']

    @click.command()
    @optgroup(cls=RequiredAnyOptionGroup)
    @optgroup.option('--foo')
    @optgroup.option('--bar')
    def cli(foo, bar):
        click.echo(f'{foo},{bar}')

    result = runner.invoke(cli, ['--help'])
    assert '[required_any]' in result.output

    result = runner.invoke(cli, [])
    assert result.exception
    assert result.exit_code == 2
    assert 'At least one of the following options' in result.output
    assert '--foo' in result.output
    assert '--bar' in result.output

    result = runner.invoke(cli, ['--foo', 'foo'])
    assert not result.exception
    assert result.exit_code == 0
    assert 'foo,None' in result.output

    result = runner.invoke(cli, ['--bar', 'bar'])
    assert not result.exception
    assert result.exit_code == 0
    assert 'None,bar' in result.output

    result = runner.invoke(cli, ['--foo', 'foo', '--bar', 'bar'])
    assert not result.exception
    assert result.exit_code == 0
    assert 'foo,bar' in result.output


def test_all_option_group(runner):
    group = AllOptionGroup()
    assert group.name_extra == ['all_or_none']

    @click.command()
    @optgroup.group(cls=AllOptionGroup)
    @optgroup.option('--foo')
    @optgroup.option('--bar')
    def cli(foo, bar):
        click.echo(f'{foo},{bar}')
    result = runner.invoke(cli, ['--help'])
    assert '[all_or_none]' in result.output

    result = runner.invoke(cli, [])
    assert not result.exception
    assert result.exit_code == 0

    result = runner.invoke(cli, ['--foo', 'foo'])
    assert result.exception
    assert result.exit_code == 2
    assert 'All options from' in result.output
    assert 'should be specified or none should be specified' in result.output
    assert '--foo' in result.output
    assert '--bar' in result.output

    result = runner.invoke(cli, ['--foo', 'foo', '--bar', 'bar'])
    assert not result.exception
    assert result.exit_code == 0
    assert 'foo,bar' in result.output


def test_required_all_option_group(runner):
    group = RequiredAllOptionGroup()
    assert group.name_extra == ['required_all']

    @click.command()
    @optgroup(cls=RequiredAllOptionGroup)
    @optgroup.option('--foo')
    @optgroup.option('--bar')
    def cli(foo, bar):
        click.echo(f'{foo},{bar}')

    result = runner.invoke(cli, ['--help'])
    assert '[required_all]' in result.output

    result = runner.invoke(cli, [])
    assert result.exception
    assert result.exit_code == 2
    assert 'Missing required options from' in result.output
    assert '--foo' in result.output
    assert '--bar' in result.output

    result = runner.invoke(cli, ['--foo', 'foo'])
    assert result.exception
    assert result.exit_code == 2
    assert 'Missing required options from' in result.output
    assert '--foo' not in result.output
    assert '--bar' in result.output

    result = runner.invoke(cli, ['--bar', 'bar'])
    assert result.exception
    assert result.exit_code == 2
    assert 'Missing required options from' in result.output
    assert '--foo' in result.output
    assert '--bar' not in result.output

    result = runner.invoke(cli, ['--foo', 'foo', '--bar', 'bar'])
    assert not result.exception
    assert result.exit_code == 0
    assert 'foo,bar' in result.output


def test_mutually_exclusive_option_group(runner):
    group = MutuallyExclusiveOptionGroup()
    assert group.name_extra == ['mutually_exclusive']

    @click.command()
    @optgroup(cls=MutuallyExclusiveOptionGroup)
    @optgroup.option('--foo')
    @optgroup.option('--bar')
    @optgroup.option('--spam')
    def cli(foo, bar, spam):
        click.echo(f'{foo},{bar},{spam}')

    result = runner.invoke(cli, ['--help'])
    assert '[mutually_exclusive]' in result.output

    result = runner.invoke(cli, [])
    assert not result.exception
    assert result.exit_code == 0
    assert 'None,None,None' in result.output

    result = runner.invoke(cli, ['--foo', 'foo', '--bar', 'bar'])
    assert result.exception
    assert result.exit_code == 2
    assert 'Mutually exclusive options from' in result.output
    assert 'cannot be used at the same time' in result.output
    assert '--foo' in result.output
    assert '--bar' in result.output

    result = runner.invoke(cli, ['--foo', 'foo', '--spam', 'spam'])
    assert result.exception
    assert result.exit_code == 2
    assert 'Mutually exclusive options from' in result.output
    assert 'cannot be used at the same time' in result.output
    assert '--foo' in result.output
    assert '--spam' in result.output

    result = runner.invoke(cli, ['--bar', 'bar', '--spam', 'spam'])
    assert result.exception
    assert result.exit_code == 2
    assert 'Mutually exclusive options from' in result.output
    assert 'cannot be used at the same time' in result.output
    assert '--bar' in result.output
    assert '--spam' in result.output

    result = runner.invoke(cli, ['--foo', 'foo'])
    assert not result.exception
    assert result.exit_code == 0
    assert 'foo,None,None' in result.output

    result = runner.invoke(cli, ['--bar', 'bar'])
    assert not result.exception
    assert result.exit_code == 0
    assert 'None,bar,None' in result.output

    result = runner.invoke(cli, ['--spam', 'spam'])
    assert not result.exception
    assert result.exit_code == 0
    assert 'None,None,spam' in result.output


def test_required_mutually_exclusive_option_group(runner):
    group = RequiredMutuallyExclusiveOptionGroup()
    assert group.name_extra == ['mutually_exclusive', 'required']

    @click.command()
    @optgroup(cls=RequiredMutuallyExclusiveOptionGroup)
    @optgroup.option('--foo')
    @optgroup.option('--bar')
    @optgroup.option('--spam')
    def cli(foo, bar, spam):
        click.echo(f'{foo},{bar},{spam}')

    result = runner.invoke(cli, ['--help'])
    assert '[mutually_exclusive, required]' in result.output

    result = runner.invoke(cli, [])
    assert result.exception
    assert result.exit_code == 2
    assert 'Missing one of the required mutually exclusive options' in result.output
    assert '--foo' in result.output
    assert '--bar' in result.output
    assert '--spam' in result.output


@pytest.mark.parametrize('cls', [
    RequiredAnyOptionGroup,
    RequiredAllOptionGroup,
    MutuallyExclusiveOptionGroup,
    RequiredMutuallyExclusiveOptionGroup,
])
def test_forbidden_option_attrs(cls):
    with pytest.raises(TypeError, match=f"'required' attribute is not allowed for '{cls.__name__}' option `foo'"):
        @click.command()
        @optgroup(cls=cls)
        @optgroup.option('--foo', required=True)
        @optgroup.option('--bar')
        def cli(foo):
            pass


def test_subcommand_first_api(runner):
    @click.group()
    @optgroup('Group 1', help='Group 1 description')
    @optgroup.option('--foo')
    @optgroup.option('--bar')
    def cli(foo, bar):
        click.echo(f'{foo},{bar}')

    @cli.command()
    @optgroup('Group 2', help='Group 2 description')
    @optgroup.option('--foo')
    @optgroup.option('--bar')
    def command(foo, bar):
        click.echo(f'{foo},{bar}')

    result = runner.invoke(cli, ['--help'])

    assert not result.exception
    assert 'Group 1:' in result.output
    assert 'Group 1 description' in result.output
    assert '--foo' in result.output
    assert '--bar' in result.output

    result = runner.invoke(cli, ['command', '--help'])

    assert not result.exception

    assert 'Group 2:' in result.output
    assert 'Group 2 description' in result.output
    assert '--foo' in result.output
    assert '--bar' in result.output

    result = runner.invoke(cli, ['--foo', 'foo', '--bar', 'bar', 'command', '--foo', 'foo1', '--bar', 'bar1'])

    assert not result.exception
    assert 'foo,bar\nfoo1,bar1' in result.output


def test_subcommand_mix_decl_first_api():
    with pytest.raises(TypeError, match=r"Check decorator position for \['--hello'\] option in 'cli1'"):
        @click.group()
        @optgroup('Group 1', help='Group 1 description')
        @optgroup.option('--foo')
        @click.option('--hello')
        @optgroup.option('--bar')
        def cli1(**params):
            pass

        @cli1.command()
        @optgroup('Group 2', help='Group 2 description')
        @optgroup.option('--foo')
        @optgroup.option('--bar')
        def command1(**params):
            pass

    with pytest.raises(TypeError, match=r"Check decorator position for \['--hello'\] option in 'command2'"):
        @click.group()
        @optgroup('Group 1', help='Group 1 description')
        @optgroup.option('--foo')
        @optgroup.option('--bar')
        def cli2(**params):
            pass

        @cli2.command()
        @optgroup('Group 2', help='Group 2 description')
        @optgroup.option('--foo')
        @click.option('--hello')
        @optgroup.option('--bar')
        def command2(**params):
            pass


def test_subcommand_second_api(runner):
    group = OptionGroup('Group', help='Group description')

    @click.group()
    @group.option('--foo1')
    @group.option('--bar1')
    def cli(foo1, bar1):
        click.echo(f'{foo1},{bar1}')

    @cli.command()
    @group.option('--foo2')
    @group.option('--bar2')
    def command(foo2, bar2):
        click.echo(f'{foo2},{bar2}')

    result = runner.invoke(cli, ['--help'])

    assert not result.exception
    assert 'Group:' in result.output
    assert 'Group description' in result.output
    assert '--foo1' in result.output
    assert '--bar1' in result.output

    result = runner.invoke(cli, ['command', '--help'])

    assert not result.exception

    assert 'Group:' in result.output
    assert 'Group description' in result.output
    assert '--foo2' in result.output
    assert '--bar2' in result.output

    result = runner.invoke(cli, ['--foo1', 'foo1', '--bar1', 'bar1', 'command', '--foo2', 'foo2', '--bar2', 'bar2'])

    assert not result.exception
    assert 'foo1,bar1\nfoo2,bar2' in result.output


def test_group_context_second_api(runner):
    group = OptionGroup('My Group')

    @click.command()
    @group.option('--foo1')
    @group.option('--bar1')
    def cli1(foo1, bar1):
        click.echo(f'{foo1},{bar1}')

    @click.command()
    @group.option('--foo2')
    @group.option('--bar2')
    def cli2(foo2, bar2):
        click.echo(f'{foo2},{bar2}')

    result = runner.invoke(cli1, ['--help'])
    assert not result.exception
    assert 'My Group:' in result.output
    assert '--foo1' in result.output
    assert '--bar1' in result.output

    result = runner.invoke(cli2, ['--help'])
    assert not result.exception
    assert 'My Group:' in result.output
    assert '--foo2' in result.output
    assert '--bar2' in result.output

    result = runner.invoke(cli1, ['--foo1', 'foo1', '--bar1', 'bar1'])
    assert not result.exception
    assert 'foo1,bar1' in result.output

    result = runner.invoke(cli2, ['--foo2', 'foo2', '--bar2', 'bar2'])
    assert not result.exception
    assert 'foo2,bar2' in result.output


def test_subcommand_mix_decl_second_api():
    group = OptionGroup()

    with pytest.raises(TypeError, match=r"Check decorator position for \['--hello'\] option in 'cli1'"):
        @click.group()
        @group.option('--foo')
        @click.option('--hello')
        @group.option('--bar')
        def cli1(**params):
            pass

        @cli1.command()
        @group.option('--foo')
        @group.option('--bar')
        def command1(**params):
            pass

    with pytest.raises(TypeError, match=r"Check decorator position for \['--hello'\] option in 'command2'"):
        @click.group()
        @group.option('--foo')
        @group.option('--bar')
        def cli2(**params):
            pass

        @cli2.command()
        @group.option('--foo')
        @click.option('--hello')
        @group.option('--bar')
        def command2(**params):
            pass


def test_command_first_api(runner):
    @optgroup('Group 1')
    @optgroup.option('--foo')
    @optgroup.option('--bar')
    @click.command()
    def cli(foo, bar):
        click.echo(f'{foo},{bar}')

    result = runner.invoke(cli, ['--help'])
    assert not result.exception
    assert 'Group 1:' in result.output
    assert '--foo' in result.output
    assert '--bar' in result.output

    result = runner.invoke(cli, ['--foo', 'foo', '--bar', 'bar'])
    assert not result.exception
    assert 'foo,bar' in result.output


def test_hidden_option(runner):
    @click.command()
    @click.option('--hello')
    @optgroup('Group 1', help='Group 1 description')
    @optgroup.option('--foo1')
    @optgroup.option('--bar1', hidden=True)
    @click.option('--goodbye')
    def cli(hello, foo1, bar1, goodbye):
        click.echo(f'{foo1},{bar1}')

    result = runner.invoke(cli, ['--help'])

    assert not result.exception
    assert 'Group 1:' in result.output
    assert 'Group 1 description' in result.output
    assert 'bar1' not in result.output

    result = runner.invoke(cli, [
        '--foo1', 'foo1', '--bar1', 'bar1',
    ])

    assert not result.exception
    assert 'foo1,bar1' in result.output

    with pytest.raises(
      TypeError, match="'hidden' attribute is not allowed for 'RequiredAllOptionGroup' option `bar'"):
        @click.command()
        @optgroup(cls=RequiredAllOptionGroup)
        @optgroup.option('--foo')
        @optgroup.option('--bar', hidden=True)
        def cli(foo, bar):
            click.echo(f'{foo},{bar}')

    @click.command()
    @optgroup(cls=RequiredAnyOptionGroup)
    @optgroup.option('--foo', hidden=True)
    @optgroup.option('--bar', hidden=True)
    def cli(foo, bar):
        click.echo(f'{foo},{bar}')

    result = runner.invoke(cli,)
    assert isinstance(result.exception, TypeError)
    assert "Need at least one non-hidden" in str(result.exception)

    @click.command()
    @optgroup("Group 1", help="Group 1 description")
    @optgroup.option('--foo', hidden=True)
    @optgroup.option('--bar', hidden=True)
    def cli(foo, bar):
        click.echo(f'{foo},{bar}')

    result = runner.invoke(cli, ['--help'])
    assert not result.exception
    assert "Group 1" not in result.output

    @click.command()
    @optgroup("Group 1", help="Group 1 description", hidden=True)
    @optgroup.option('--foo')
    @optgroup.option('--bar')
    def cli(foo, bar):
        click.echo(f'{foo},{bar}')

    result = runner.invoke(cli, ['--help'])
    assert not result.exception
    assert "Group 1" not in result.output
    assert "foo" not in result.output
    assert "bar" not in result.output

    @click.command()
    @optgroup("Group 1", help="Group 1 description", hidden=True)
    @optgroup.option('--foo', hidden=False)  # override hidden of group
    @optgroup.option('--bar')
    def cli(foo, bar):
        click.echo(f'{foo},{bar}')

    result = runner.invoke(cli, ['--help'])
    assert not result.exception
    assert "Group 1" in result.output
    assert "foo" in result.output
    assert "bar" not in result.output


@pytest.mark.parametrize('param_decls, options, output', [
    ((), ['--help'], '--help'),
    (('-h', '--help'), ['-h'], '-h, --help'),
    (('-h', '--help'), ['--help'], '-h, --help'),
])
def test_help_option(runner, param_decls, options, output):
    @click.command()
    @optgroup('Help Options')
    @optgroup.help_option(*param_decls)
    def cli() -> None:
        click.echo('Running command.')

    result = runner.invoke(cli)
    assert not result.exception
    assert 'Running command.' in result.output
    assert 'Usage:' not in result.output

    result = runner.invoke(cli, options)
    assert not result.exception
    assert 'Running command.' not in result.output
    assert 'Usage:' in result.output
    assert output in result.output


def test_wrapped_functions(runner):
    def make_z():
        """A unified option interface for making a `z`."""

        def decorator(f):
            @optgroup.group("Group xyz")
            @optgroup.option("-x", type=int)
            @optgroup.option("-y", type=int)
            @wraps(f)
            def new_func(*args, x=0, y=0, **kwargs):
                # Here we handle every detail about how to make a `z` from the given options
                f(*args, z=x + y, **kwargs)

            return new_func

        return decorator

    def make_c():
        """A unified option interface for making a `c`."""

        def decorator(f):
            @optgroup.group("Group abc")
            @optgroup.option("-a", type=int)
            @optgroup.option("-b", type=int)
            @wraps(f)
            def new_func(*args, a=0, b=0, **kwargs):
                # Here we do the same, but for another object `c` (and many others to come)
                f(*args, c=a * b, **kwargs)

            return new_func

        return decorator

    # Here I want to create a script that has a commen UI to make a `z`.
    # I want to reuse a common set of options for how to make a `z` and don't want
    # to sweat the details. Also, I've decided that I also want a `c` for this script.
    @click.command()
    @make_z()
    @make_c()
    def f(z, c):
        print(z, c)

    # Test
    result = runner.invoke(f, ["--help"])
    assert "Group xyz" in result.output
    assert "-x" in result.output
    assert "-y" in result.output
    assert "Group abc" in result.output
    assert "-a" in result.output
    assert "-b" in result.output