from datetime import datetime

import pytest

from pydantic import BaseModel, ValidationError
from pydantic.color import Color
from pydantic.errors import ColorError
from pydantic.utils import almost_equal_floats


@pytest.mark.parametrize(
    'raw_color, as_tuple',
    [
        # named colors
        ('aliceblue', (240, 248, 255)),
        ('Antiquewhite', (250, 235, 215)),
        ('#000000', (0, 0, 0)),
        ('#DAB', (221, 170, 187)),
        ('#dab', (221, 170, 187)),
        ('#000', (0, 0, 0)),
        ('0x797979', (121, 121, 121)),
        ('0x777', (119, 119, 119)),
        ('0x777777', (119, 119, 119)),
        ('0x777777cc', (119, 119, 119, 0.8)),
        ('777', (119, 119, 119)),
        ('777c', (119, 119, 119, 0.8)),
        (' 777', (119, 119, 119)),
        ('777 ', (119, 119, 119)),
        (' 777 ', (119, 119, 119)),
        ((0, 0, 128), (0, 0, 128)),
        ([0, 0, 128], (0, 0, 128)),
        ((0, 0, 205, 1.0), (0, 0, 205)),
        ((0, 0, 205, 0.5), (0, 0, 205, 0.5)),
        ('rgb(0, 0, 205)', (0, 0, 205)),
        ('rgb(0, 0, 205.2)', (0, 0, 205)),
        ('rgb(0, 0.2, 205)', (0, 0, 205)),
        ('rgba(0, 0, 128, 0.6)', (0, 0, 128, 0.6)),
        ('rgba(0, 0, 128, .6)', (0, 0, 128, 0.6)),
        ('rgba(0, 0, 128, 60%)', (0, 0, 128, 0.6)),
        (' rgba(0, 0, 128,0.6) ', (0, 0, 128, 0.6)),
        ('rgba(00,0,128,0.6  )', (0, 0, 128, 0.6)),
        ('rgba(0, 0, 128, 0)', (0, 0, 128, 0)),
        ('rgba(0, 0, 128, 1)', (0, 0, 128)),
        ('hsl(270, 60%, 70%)', (178, 133, 224)),
        ('hsl(180, 100%, 50%)', (0, 255, 255)),
        ('hsl(630, 60%, 70%)', (178, 133, 224)),
        ('hsl(270deg, 60%, 70%)', (178, 133, 224)),
        ('hsl(.75turn, 60%, 70%)', (178, 133, 224)),
        ('hsl(-.25turn, 60%, 70%)', (178, 133, 224)),
        ('hsl(-0.25turn, 60%, 70%)', (178, 133, 224)),
        ('hsl(4.71238rad, 60%, 70%)', (178, 133, 224)),
        ('hsl(10.9955rad, 60%, 70%)', (178, 133, 224)),
        ('hsl(270, 60%, 50%, .15)', (127, 51, 204, 0.15)),
        ('hsl(270.00deg, 60%, 50%, 15%)', (127, 51, 204, 0.15)),
    ],
)
def test_color_success(raw_color, as_tuple):
    c = Color(raw_color)
    assert c.as_rgb_tuple() == as_tuple
    assert c.original() == raw_color


@pytest.mark.parametrize(
    'color',
    [
        # named colors
        'nosuchname',
        'chucknorris',
        # hex
        '#0000000',
        'x000',
        # rgb/rgba tuples
        (256, 256, 256),
        (128, 128, 128, 0.5, 128),
        (0, 0, 'x'),
        (0, 0, 0, 1.5),
        (0, 0, 0, 'x'),
        (0, 0, 1280),
        (0, 0, 1205, 0.1),
        (0, 0, 1128, 0.5),
        (0, 0, 1128, -0.5),
        (0, 0, 1128, 1.5),
        # rgb/rgba strings
        'rgb(0, 0, 1205)',
        'rgb(0, 0, 1128)',
        'rgba(0, 0, 11205, 0.1)',
        'rgba(0, 0, 128, 11.5)',
        'hsl(180, 101%, 50%)',
        # neither a tuple, not a string
        datetime(2017, 10, 5, 19, 47, 7),
        object,
        range(10),
    ],
)
def test_color_fail(color):
    with pytest.raises(ColorError):
        Color(color)


def test_model_validation():
    class Model(BaseModel):
        color: Color

    assert Model(color='red').color.as_hex() == '#f00'
    assert Model(color=Color('red')).color.as_hex() == '#f00'
    with pytest.raises(ValidationError) as exc_info:
        Model(color='snot')
    assert exc_info.value.errors() == [
        {
            'loc': ('color',),
            'msg': 'value is not a valid color: string not recognised as a valid color',
            'type': 'value_error.color',
            'ctx': {'reason': 'string not recognised as a valid color'},
        }
    ]


def test_as_rgb():
    assert Color('bad').as_rgb() == 'rgb(187, 170, 221)'
    assert Color((1, 2, 3, 0.123456)).as_rgb() == 'rgba(1, 2, 3, 0.12)'
    assert Color((1, 2, 3, 0.1)).as_rgb() == 'rgba(1, 2, 3, 0.1)'


def test_as_rgb_tuple():
    assert Color((1, 2, 3)).as_rgb_tuple(alpha=None) == (1, 2, 3)
    assert Color((1, 2, 3, 1)).as_rgb_tuple(alpha=None) == (1, 2, 3)
    assert Color((1, 2, 3, 0.3)).as_rgb_tuple(alpha=None) == (1, 2, 3, 0.3)
    assert Color((1, 2, 3, 0.3)).as_rgb_tuple(alpha=None) == (1, 2, 3, 0.3)

    assert Color((1, 2, 3)).as_rgb_tuple(alpha=False) == (1, 2, 3)
    assert Color((1, 2, 3, 0.3)).as_rgb_tuple(alpha=False) == (1, 2, 3)

    assert Color((1, 2, 3)).as_rgb_tuple(alpha=True) == (1, 2, 3, 1)
    assert Color((1, 2, 3, 0.3)).as_rgb_tuple(alpha=True) == (1, 2, 3, 0.3)


def test_as_hsl():
    assert Color('bad').as_hsl() == 'hsl(260, 43%, 77%)'
    assert Color((1, 2, 3, 0.123456)).as_hsl() == 'hsl(210, 50%, 1%, 0.12)'
    assert Color('hsl(260, 43%, 77%)').as_hsl() == 'hsl(260, 43%, 77%)'


def test_as_hsl_tuple():
    c = Color('016997')
    h, s, l, a = c.as_hsl_tuple(alpha=True)
    assert almost_equal_floats(h, 0.551, delta=0.01)
    assert almost_equal_floats(s, 0.986, delta=0.01)
    assert almost_equal_floats(l, 0.298, delta=0.01)
    assert a == 1

    assert c.as_hsl_tuple(alpha=False) == c.as_hsl_tuple(alpha=None) == (h, s, l)

    c = Color((3, 40, 50, 0.5))
    hsla = c.as_hsl_tuple(alpha=None)
    assert len(hsla) == 4
    assert hsla[3] == 0.5


def test_as_hex():
    assert Color((1, 2, 3)).as_hex() == '#010203'
    assert Color((119, 119, 119)).as_hex() == '#777'
    assert Color((119, 0, 238)).as_hex() == '#70e'
    assert Color('B0B').as_hex() == '#b0b'
    assert Color((1, 2, 3, 0.123456)).as_hex() == '#0102031f'
    assert Color((1, 2, 3, 0.1)).as_hex() == '#0102031a'


def test_as_named():
    assert Color((0, 255, 255)).as_named() == 'cyan'
    assert Color('#808000').as_named() == 'olive'
    assert Color('hsl(180, 100%, 50%)').as_named() == 'cyan'

    assert Color((240, 248, 255)).as_named() == 'aliceblue'
    with pytest.raises(ValueError) as exc_info:
        Color((1, 2, 3)).as_named()
    assert exc_info.value.args[0] == 'no named color found, use fallback=True, as_hex() or as_rgb()'

    assert Color((1, 2, 3)).as_named(fallback=True) == '#010203'
    assert Color((1, 2, 3, 0.1)).as_named(fallback=True) == '#0102031a'


def test_str_repr():
    assert str(Color('red')) == 'red'
    assert repr(Color('red')) == "Color('red', rgb=(255, 0, 0))"
    assert str(Color((1, 2, 3))) == '#010203'
    assert repr(Color((1, 2, 3))) == "Color('#010203', rgb=(1, 2, 3))"