# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:

# Copyright 2014-2018 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
#
# This file is part of qutebrowser.
#
# qutebrowser 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.
#
# qutebrowser 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 qutebrowser.  If not, see <http://www.gnu.org/licenses/>.

import pytest
from PyQt5.QtCore import Qt

from qutebrowser.utils import utils
from qutebrowser.keyinput import keyutils


class TestKeyToString:

    """Test key_to_string."""

    @pytest.mark.parametrize('key, expected', [
        (Qt.Key_Blue, 'Blue'),
        (Qt.Key_Backtab, 'Tab'),
        (Qt.Key_Escape, 'Escape'),
        (Qt.Key_A, 'A'),
        (Qt.Key_degree, '°'),
        (Qt.Key_Meta, 'Meta'),
    ])
    def test_normal(self, key, expected):
        """Test a special key where QKeyEvent::toString works incorrectly."""
        assert keyutils.key_to_string(key) == expected

    def test_missing(self, monkeypatch):
        """Test with a missing key."""
        monkeypatch.delattr(keyutils.Qt, 'Key_Blue')
        # We don't want to test the key which is actually missing - we only
        # want to know if the mapping still behaves properly.
        assert keyutils.key_to_string(Qt.Key_A) == 'A'

    def test_all(self):
        """Make sure there's some sensible output for all keys."""
        for name, value in sorted(vars(Qt).items()):
            if not isinstance(value, Qt.Key):
                continue
            print(name)
            string = keyutils.key_to_string(value)
            assert string
            string.encode('utf-8')  # make sure it's encodable


class TestKeyEventToString:

    """Test keyevent_to_string."""

    def test_only_control(self, fake_keyevent_factory):
        """Test keyeevent when only control is pressed."""
        evt = fake_keyevent_factory(key=Qt.Key_Control,
                                    modifiers=Qt.ControlModifier)
        assert not keyutils.keyevent_to_string(evt)

    def test_only_hyper_l(self, fake_keyevent_factory):
        """Test keyeevent when only Hyper_L is pressed."""
        evt = fake_keyevent_factory(key=Qt.Key_Hyper_L,
                                    modifiers=Qt.MetaModifier)
        assert not keyutils.keyevent_to_string(evt)

    def test_only_key(self, fake_keyevent_factory):
        """Test with a simple key pressed."""
        evt = fake_keyevent_factory(key=Qt.Key_A)
        assert keyutils.keyevent_to_string(evt) == 'a'

    def test_key_and_modifier(self, fake_keyevent_factory):
        """Test with key and modifier pressed."""
        evt = fake_keyevent_factory(key=Qt.Key_A, modifiers=Qt.ControlModifier)
        expected = '<Meta+a>' if utils.is_mac else '<Ctrl+a>'
        assert keyutils.keyevent_to_string(evt) == expected

    def test_key_and_modifiers(self, fake_keyevent_factory):
        """Test with key and multiple modifiers pressed."""
        evt = fake_keyevent_factory(
            key=Qt.Key_A, modifiers=(Qt.ControlModifier | Qt.AltModifier |
                                     Qt.MetaModifier | Qt.ShiftModifier))
        assert keyutils.keyevent_to_string(evt) == '<Ctrl+Alt+Meta+Shift+a>'

    @pytest.mark.fake_os('mac')
    def test_mac(self, fake_keyevent_factory):
        """Test with a simulated mac."""
        evt = fake_keyevent_factory(key=Qt.Key_A, modifiers=Qt.ControlModifier)
        assert keyutils.keyevent_to_string(evt) == '<Meta+a>'


@pytest.mark.parametrize('keystr, expected', [
    ('<Control-x>', keyutils.KeySequence(Qt.ControlModifier | Qt.Key_X)),
    ('<Meta-x>', keyutils.KeySequence(Qt.MetaModifier | Qt.Key_X)),
    ('<Ctrl-Alt-y>',
     keyutils.KeySequence(Qt.ControlModifier | Qt.AltModifier | Qt.Key_Y)),
    ('x', keyutils.KeySequence(Qt.Key_X)),
    ('X', keyutils.KeySequence(Qt.ShiftModifier | Qt.Key_X)),
    ('<Escape>', keyutils.KeySequence(Qt.Key_Escape)),
    ('xyz', keyutils.KeySequence(Qt.Key_X, Qt.Key_Y, Qt.Key_Z)),
    ('<Control-x><Meta-y>', keyutils.KeySequence(Qt.ControlModifier | Qt.Key_X,
                                                 Qt.MetaModifier | Qt.Key_Y)),
     ('<blub>', keyutils.KeyParseError),
     ('\U00010000', keyutils.KeyParseError),
])
def test_parse(keystr, expected):
    if expected is keyutils.KeyParseError:
        with pytest.raises(keyutils.KeyParseError):
            keyutils.KeySequence.parse(keystr)
    else:
        assert keyutils.KeySequence.parse(keystr) == expected


@pytest.mark.parametrize('orig, normalized', [
    ('<Control+x>', '<ctrl+x>'),
    ('<Windows+x>', '<meta+x>'),
    ('<Mod1+x>', '<alt+x>'),
    ('<Mod4+x>', '<meta+x>'),
    ('<Control-->', '<ctrl+->'),
    ('<Windows++>', '<meta++>'),
    ('<ctrl-x>', '<ctrl+x>'),
    ('<control+x>', '<ctrl+x>')
])
def test_normalize_keystr(orig, normalized):
    expected = keyutils.KeySequence.parse(normalized)
    assert keyutils.KeySequence.parse(orig) == expected