from io import StringIO
from contextlib import redirect_stdout, redirect_stderr
import pytest


from tiramisu_cmdline_parser import TiramisuCmdlineParser
from tiramisu import IntOption, StrOption, BoolOption, ChoiceOption, \
                     SymLinkOption, OptionDescription, Leadership, Config, submulti
from tiramisu_json_api import Config as JsonConfig


def get_config(json, with_mandatory=False):
    leader = StrOption('leader', "Leader var", ['192.168.0.1'], multi=True)
    follower = StrOption('follower', "Follower", multi=True)
    if with_mandatory:
        properties = ('mandatory',)
    else:
        properties = None
    follower_submulti = StrOption('follower_submulti', "Follower submulti", multi=submulti, properties=properties)
    follower_integer = IntOption('follower_integer', "Follower integer", multi=True)
    follower_boolean = BoolOption('follower_boolean', "Follower boolean", multi=True)
    follower_choice = ChoiceOption('follower_choice', "Follower choice", ('opt1', 'opt2'), multi=True)
    opt_list = [leader, follower, follower_submulti, follower_integer, follower_boolean, follower_choice]
    if with_mandatory:
        opt_list.append(StrOption('follower_mandatory', "Follower mandatory", multi=True, properties=('mandatory',)))
    leadership = Leadership('leader', '', opt_list)
    config = Config(OptionDescription('root', 'root', [leadership]))
    if json == 'tiramisu':
        return config
    jconfig = JsonConfig(config.option.dict())
    return jconfig


@pytest.fixture(params=['tiramisu', 'tiramisu-api'])
def json(request):
    return request.param


def test_leadership_help(json):
    output = """usage: prog.py [-h] [--leader.leader [LEADER [LEADER ...]]]
               [--leader.follower INDEX [FOLLOWER]] --leader.follower_submulti
               INDEX [FOLLOWER_SUBMULTI ...]
               [--leader.follower_integer INDEX [FOLLOWER_INTEGER]]
               [--leader.follower_boolean INDEX]
               [--leader.no-follower_boolean INDEX]
               [--leader.follower_choice INDEX [{opt1,opt2}]]
               --leader.follower_mandatory INDEX FOLLOWER_MANDATORY

optional arguments:
  -h, --help            show this help message and exit

leader:
  leader

  --leader.leader [LEADER [LEADER ...]]
                        Leader var
  --leader.follower INDEX [FOLLOWER]
                        Follower
  --leader.follower_submulti INDEX [FOLLOWER_SUBMULTI ...]
                        Follower submulti
  --leader.follower_integer INDEX [FOLLOWER_INTEGER]
                        Follower integer
  --leader.follower_boolean INDEX
                        Follower boolean
  --leader.no-follower_boolean INDEX
  --leader.follower_choice INDEX [{opt1,opt2}]
                        Follower choice
  --leader.follower_mandatory INDEX FOLLOWER_MANDATORY
                        Follower mandatory
"""
    parser = TiramisuCmdlineParser(get_config(json, with_mandatory=True), 'prog.py')
    f = StringIO()
    with redirect_stdout(f):
        parser.print_help()
    assert f.getvalue() == output


def test_leadership_modif_leader(json):
    output = {'leader.leader': ['192.168.1.1'],
              'leader.follower': [None],
              'leader.follower_boolean': [None],
              'leader.follower_choice': [None],
              'leader.follower_integer': [None],
              'leader.follower_submulti': [[]]}

    config = get_config(json)
    parser = TiramisuCmdlineParser(config, 'prog.py')
    parser.parse_args(['--leader.leader', '192.168.1.1'])
    assert config.value.dict() == output


def test_leadership_modif_follower(json):
    output = {'leader.leader': ['192.168.0.1'],
              'leader.follower': ['255.255.255.0'],
              'leader.follower_boolean': [None],
              'leader.follower_choice': [None],
              'leader.follower_integer': [None],
              'leader.follower_submulti': [[]]}

    config = get_config(json)
    parser = TiramisuCmdlineParser(config, 'prog.py')
    parser.parse_args(['--leader.follower', '0', '255.255.255.0'])
    assert config.value.dict() == output


def test_leadership_modif_follower_not_submulti(json):
    output = """usage: prog.py [-h] [--leader.leader [LEADER [LEADER ...]]]
               [--leader.follower INDEX [FOLLOWER]]
               [--leader.follower_submulti INDEX [FOLLOWER_SUBMULTI ...]]
               [--leader.follower_integer INDEX [FOLLOWER_INTEGER]]
               [--leader.follower_boolean INDEX]
               [--leader.no-follower_boolean INDEX]
               [--leader.follower_choice INDEX [{opt1,opt2}]]
prog.py: error: unrecognized arguments: 255.255.255.0
"""

    config = get_config(json)
    parser = TiramisuCmdlineParser(config, 'prog.py')
    f = StringIO()
    with redirect_stderr(f):
        try:
            parser.parse_args(['--leader.follower', '0', '255.255.255.0', '255.255.255.0'])
        except SystemExit as err:
            assert str(err) == "2"
        else:
            raise Exception('must raises')
    assert f.getvalue() == output


def test_leadership_modif_follower_submulti(json):
    output = {'leader.leader': ['192.168.0.1'],
              'leader.follower': [None],
              'leader.follower_boolean': [None],
              'leader.follower_choice': [None],
              'leader.follower_integer': [None],
              'leader.follower_submulti': [['255.255.255.0']]}

    config = get_config(json)
    parser = TiramisuCmdlineParser(config, 'prog.py')
    parser.parse_args(['--leader.follower_submulti', '0', '255.255.255.0'])
    assert config.value.dict() == output


def test_leadership_modif_follower_submulti_multi(json):
    output = {'leader.leader': ['192.168.0.1'],
              'leader.follower': [None],
              'leader.follower_boolean': [None],
              'leader.follower_choice': [None],
              'leader.follower_integer': [None],
              'leader.follower_submulti': [['255.255.255.0', '255.255.255.128']]}

    config = get_config(json)
    parser = TiramisuCmdlineParser(config, 'prog.py')
    parser.parse_args(['--leader.follower_submulti', '0', '255.255.255.0', '255.255.255.128'])
    assert config.value.dict() == output


def test_leadership_modif_follower_bool_true(json):
    output = {'leader.leader': ['192.168.0.1'],
              'leader.follower': [None],
              'leader.follower_boolean': [True],
              'leader.follower_choice': [None],
              'leader.follower_integer': [None],
              'leader.follower_submulti': [[]]}

    config = get_config(json)
    parser = TiramisuCmdlineParser(config, 'prog.py')
    parser.parse_args(['--leader.follower_boolean', '0'])
    assert config.value.dict() == output


def test_leadership_modif_follower_bool_false(json):
    output = {'leader.leader': ['192.168.0.1'],
              'leader.follower': [None],
              'leader.follower_boolean': [False],
              'leader.follower_choice': [None],
              'leader.follower_integer': [None],
              'leader.follower_submulti': [[]]}

    config = get_config(json)
    parser = TiramisuCmdlineParser(config, 'prog.py')
    parser.parse_args(['--leader.no-follower_boolean', '0'])
    assert config.value.dict() == output


def test_leadership_modif_follower_choice(json):
    output = {'leader.leader': ['192.168.0.1'],
              'leader.follower': [None],
              'leader.follower_boolean': [None],
              'leader.follower_choice': ['opt1'],
              'leader.follower_integer': [None],
              'leader.follower_submulti': [[]]}

    config = get_config(json)
    parser = TiramisuCmdlineParser(config, 'prog.py')
    parser.parse_args(['--leader.follower_choice', '0', 'opt1'])
    assert config.value.dict() == output


def test_leadership_modif_follower_choice_unknown(json):
    output = """usage: prog.py [-h] [--leader.leader [LEADER [LEADER ...]]]
               [--leader.follower INDEX [FOLLOWER]]
               [--leader.follower_submulti INDEX [FOLLOWER_SUBMULTI ...]]
               [--leader.follower_integer INDEX [FOLLOWER_INTEGER]]
               [--leader.follower_boolean INDEX]
               [--leader.no-follower_boolean INDEX]
               [--leader.follower_choice INDEX [{opt1,opt2}]]
prog.py: error: invalid choice: 'opt_unknown' (choose from 'opt1', 'opt2')
"""
    config = get_config(json)
    parser = TiramisuCmdlineParser(config, 'prog.py')
    f = StringIO()
    with redirect_stderr(f):
        try:
            parser.parse_args(['--leader.follower_choice', '0', 'opt_unknown'])
        except SystemExit as err:
            assert str(err) == "2"
        else:
            raise Exception('must raises')
    assert f.getvalue() == output


def test_leadership_modif_follower_not_number(json):
    output = """usage: prog.py [-h] [--leader.leader [LEADER [LEADER ...]]]
               [--leader.follower INDEX [FOLLOWER]]
               [--leader.follower_submulti INDEX [FOLLOWER_SUBMULTI ...]]
               [--leader.follower_integer INDEX [FOLLOWER_INTEGER]]
               [--leader.follower_boolean INDEX]
               [--leader.no-follower_boolean INDEX]
               [--leader.follower_choice INDEX [{opt1,opt2}]]
prog.py: error: index must be a number, not a
"""

    config = get_config(json)
    parser = TiramisuCmdlineParser(config, 'prog.py')
    f = StringIO()
    with redirect_stderr(f):
        try:
            parser.parse_args(['--leader.follower', 'a', '255.255.255.0'])
        except SystemExit as err:
            assert str(err) == "2"
        else:
            raise Exception('must raises')
    assert f.getvalue() == output


def test_leadership_modif_multi(json):
    output = {'leader.leader': ['192.168.1.1', '10.253.10.1', '192.168.253.1'],
              'leader.follower': ['255.255.255.128', None, '255.255.255.0'],
              'leader.follower_boolean': [None, None, None],
              'leader.follower_choice': [None, None, None],
              'leader.follower_integer': [None, None, None],
              'leader.follower_submulti': [[], [], []]}

    config = get_config(json)
    parser = TiramisuCmdlineParser(config, 'prog.py')
    parser.parse_args(['--leader.leader', '192.168.1.1', '10.253.10.1', '192.168.253.1',
                       '--leader.follower', '0', '255.255.255.128',
                       '--leader.follower', '2', '255.255.255.0'])
    assert config.value.dict() == output


def test_leadership_modif_mandatory(json):
    output = {'leader.leader': ['192.168.1.1'],
              'leader.follower': [None],
              'leader.follower_mandatory': ['255.255.255.128'],
              'leader.follower_boolean': [None],
              'leader.follower_choice': [None],
              'leader.follower_integer': [None],
              'leader.follower_submulti': [['255.255.255.128']]}
    output2 = """usage: prog.py --leader.leader ['192.168.1.1'] [-h]
                                               [--leader.follower INDEX [FOLLOWER]]
                                               --leader.follower_submulti
                                               INDEX [FOLLOWER_SUBMULTI ...]
                                               [--leader.follower_integer INDEX [FOLLOWER_INTEGER]]
                                               [--leader.follower_boolean INDEX]
                                               [--leader.no-follower_boolean INDEX]
                                               [--leader.follower_choice INDEX [{opt1,opt2}]]
                                               --leader.follower_mandatory
                                               INDEX FOLLOWER_MANDATORY
prog.py: error: the following arguments are required: --leader.follower_submulti"""

    config = get_config(json, with_mandatory=True)
    parser = TiramisuCmdlineParser(config, 'prog.py')
    f = StringIO()
    with redirect_stderr(f):
        try:
            parser.parse_args(['--leader.leader', '192.168.1.1'])
        except SystemExit as err:
            assert str(err) == "2"
        else:
            raise Exception('must raises')
    assert f.getvalue() == output2 + ', --leader.follower_mandatory\n'
    f = StringIO()
    with redirect_stderr(f):
        try:
            parser.parse_args(['--leader.leader', '192.168.1.1',
                               '--leader.follower_mandatory', '0', '255.255.255.128'])
        except SystemExit as err:
            assert str(err) == "2"
        else:
            raise Exception('must raises')
    assert f.getvalue() == output2 + '\n'
    parser.parse_args(['--leader.leader', '192.168.1.1',
                       '--leader.follower_submulti', '0', '255.255.255.128',
                       '--leader.follower_mandatory', '0', '255.255.255.128'])
    assert config.value.dict() == output


def test_leadership_modif_mandatory_unvalidate(json):
    output = {'leader.leader': ['192.168.1.1'],
              'leader.follower': [None],
              'leader.follower_mandatory': [None],
              'leader.follower_boolean': [None],
              'leader.follower_choice': [None],
              'leader.follower_integer': [None],
              'leader.follower_submulti': [[]]}
    config = get_config(json, with_mandatory=True)
    parser = TiramisuCmdlineParser(config, 'prog.py')
    parser.parse_args(['--leader.leader', '192.168.1.1'], valid_mandatory=False)
    assert config.value.dict() == output