from unittest.mock import Mock

import pytest
from PyQt6.QtCore import QObject, pyqtSignal
from PyQt6.QtGui import QTextDocument
from PyQt6.QtWidgets import QApplication

import room_widget


class PlayerSignals(QObject):
    time_changed = pyqtSignal(int)
    state_changed = pyqtSignal(bool, int)


@pytest.fixture
def room(qtbot, monkeypatch):
    player = Mock(signals=PlayerSignals())
    monkeypatch.setattr(room_widget, 'VLCSyncPlayer', lambda frame: player)
    widget = room_widget.RoomWidget()
    widget.username = 'Me'
    qtbot.addWidget(widget)
    widget.resize(1050, 500)
    widget.show()
    return widget


@pytest.mark.parametrize('text', ["It's someone's & my <message>",
                                  "It's at 1:23 & <b>literal</b>",
                                  'line one\nline two', 'literal &#39; entity'])
def test_message_rendering(room, text):
    room.add_chat_message("<b>O'Brien</b>", text, 0)
    bubble = room.chat_content_layout.itemAt(0).widget()
    doc = QTextDocument()
    doc.setHtml(bubble.text_lbl.text())
    assert doc.toPlainText() == text
    if '1:23' in text:
        assert 'href="seek:1:23"' in bubble.text_lbl.text()


def test_bubbles_do_not_shrink_or_clip_when_overflowing(room, qtbot):
    text = 'A wrapped message with several words. ' * 8
    room.add_chat_message('Other', text, 0)
    qtbot.wait(100)
    first = room.chat_content_layout.itemAt(0).widget()
    initial_height = first.height()
    for i in range(35):
        room.add_chat_message('Me' if i % 2 else 'Other', text, 0)
    qtbot.wait(200)
    assert room.chat_messages.verticalScrollBar().maximum() > 0
    assert first.height() >= initial_height
    for width in (220, 450, 280):
        room.splitter.setSizes([room.width() - width, width])
        qtbot.wait(100)
        for i in range(room.chat_content_layout.count()):
            bubble = room.chat_content_layout.itemAt(i).widget()
            label = bubble.text_lbl
            assert label.height() >= label.heightForWidth(label.width())
            assert bubble.bubble.rect().contains(label.geometry())


def test_unread_alert_and_focus_clear(room, qtbot, monkeypatch):
    alert = Mock()
    monkeypatch.setattr(QApplication, 'alert', alert)
    room.activateWindow()
    room.setFocus()
    qtbot.wait(50)
    room.add_chat_message('Other', 'hello', 0)
    assert room._unread_messages == 1
    alert.assert_called_once()
    room.add_chat_message('Me', 'reply', 0)
    assert room._unread_messages == 1
    room.chat_input.setFocus()
    qtbot.wait(50)
    assert room._unread_messages == 0
    room.add_chat_message('Other', 'focused', 0)
    assert room._unread_messages == 0
    room.chat_container.hide()
    room.add_chat_message('Other', 'hidden', 0)
    assert room._unread_messages == 1
    room.clear_chat()
    assert room._unread_messages == 0


def test_popout_focus_and_wrapping(room, qtbot, monkeypatch):
    monkeypatch.setattr(QApplication, 'alert', Mock())
    room.popout_chat()
    popout = room.popout_window
    qtbot.addWidget(popout)
    popout.activateWindow()
    room.chat_input.setFocus()
    qtbot.wait(100)
    room.add_chat_message('Other', 'Wrapped popout text ' * 40, 0)
    qtbot.wait(100)
    assert room._unread_messages == 0
    bubble = room.chat_content_layout.itemAt(0).widget()
    assert bubble.text_lbl.height() >= bubble.text_lbl.heightForWidth(bubble.text_lbl.width())
    room.activateWindow()
    room.setFocus()
    qtbot.wait(100)
    room.add_chat_message('Other', 'Background popout', 0)
    assert room._unread_messages == 1
    popout.close()