# coding:utf-8
from PyQt5.QtCore import Qt, pyqtSignal, QObject, QEvent
from PyQt5.QtGui import QColor
from PyQt5.QtWidgets import QLabel, QFrame, QVBoxLayout, QHBoxLayout, QPushButton
from qframelesswindow import FramelessDialog

from ...common.auto_wrap import TextWrap
from ...common.style_sheet import FluentStyleSheet
from ..widgets.button import PrimaryPushButton
from ..widgets.label import BodyLabel

from .mask_dialog_base import MaskDialogBase


class Ui_MessageBox:
    """ Ui of message box """

    yesSignal = pyqtSignal()
    cancelSignal = pyqtSignal()

    def _setUpUi(self, title, content, parent):
        self.content = content
        self.titleLabel = QLabel(title, parent)
        self.contentLabel = BodyLabel(content, parent)

        self.buttonGroup = QFrame(parent)
        self.yesButton = PrimaryPushButton(self.tr('OK'), self.buttonGroup)
        self.cancelButton = QPushButton(self.tr('Cancel'), self.buttonGroup)

        self.vBoxLayout = QVBoxLayout(parent)
        self.textLayout = QVBoxLayout()
        self.buttonLayout = QHBoxLayout(self.buttonGroup)

        self.__initWidget()

    def __initWidget(self):
        self.__setQss()
        self.__initLayout()

        # fixes https://github.com/zhiyiYo/PyQt-Fluent-Widgets/issues/19
        self.yesButton.setAttribute(Qt.WA_LayoutUsesWidgetRect)
        self.cancelButton.setAttribute(Qt.WA_LayoutUsesWidgetRect)

        self.yesButton.setFocus()
        self.buttonGroup.setFixedHeight(81)

        self.contentLabel.setContextMenuPolicy(Qt.ContextMenuPolicy.CustomContextMenu)
        self._adjustText()

        self.yesButton.clicked.connect(self.__onYesButtonClicked)
        self.cancelButton.clicked.connect(self.__onCancelButtonClicked)

    def _adjustText(self):
        if self.isWindow():
            if self.parent():
                w = max(self.titleLabel.width(), self.parent().width())
                chars = max(min(w / 9, 140), 30)
            else:
                chars = 100
        else:
            w = max(self.titleLabel.width(), self.window().width())
            chars = max(min(w / 9, 100), 30)

        self.contentLabel.setText(TextWrap.wrap(self.content, chars, False)[0])

    def __initLayout(self):
        self.vBoxLayout.setSpacing(0)
        self.vBoxLayout.setContentsMargins(0, 0, 0, 0)
        self.vBoxLayout.addLayout(self.textLayout, 1)
        self.vBoxLayout.addWidget(self.buttonGroup, 0, Qt.AlignBottom)
        self.vBoxLayout.setSizeConstraint(QVBoxLayout.SetMinimumSize)

        self.textLayout.setSpacing(12)
        self.textLayout.setContentsMargins(24, 24, 24, 24)
        self.textLayout.addWidget(self.titleLabel, 0, Qt.AlignTop)
        self.textLayout.addWidget(self.contentLabel, 0, Qt.AlignTop)

        self.buttonLayout.setSpacing(12)
        self.buttonLayout.setContentsMargins(24, 24, 24, 24)
        self.buttonLayout.addWidget(self.yesButton, 1, Qt.AlignVCenter)
        self.buttonLayout.addWidget(self.cancelButton, 1, Qt.AlignVCenter)

    def __onCancelButtonClicked(self):
        self.reject()
        self.cancelSignal.emit()

    def __onYesButtonClicked(self):
        self.accept()
        self.yesSignal.emit()

    def __setQss(self):
        self.titleLabel.setObjectName("titleLabel")
        self.contentLabel.setObjectName("contentLabel")
        self.buttonGroup.setObjectName('buttonGroup')
        self.cancelButton.setObjectName('cancelButton')

        FluentStyleSheet.DIALOG.apply(self)
        FluentStyleSheet.DIALOG.apply(self.contentLabel)

        self.yesButton.adjustSize()
        self.cancelButton.adjustSize()

    def setContentCopyable(self, isCopyable: bool):
        """ set whether the content is copyable """
        if isCopyable:
            self.contentLabel.setTextInteractionFlags(
                Qt.TextInteractionFlag.TextSelectableByMouse)
        else:
            self.contentLabel.setTextInteractionFlags(
                Qt.TextInteractionFlag.NoTextInteraction)


class Dialog(FramelessDialog, Ui_MessageBox):
    """ Dialog box """

    yesSignal = pyqtSignal()
    cancelSignal = pyqtSignal()

    def __init__(self, title: str, content: str, parent=None):
        super().__init__(parent=parent)
        self._setUpUi(title, content, self)

        self.windowTitleLabel = QLabel(title, self)

        self.setResizeEnabled(False)
        self.resize(240, 192)
        self.titleBar.hide()

        self.vBoxLayout.insertWidget(0, self.windowTitleLabel, 0, Qt.AlignTop)
        self.windowTitleLabel.setObjectName('windowTitleLabel')
        FluentStyleSheet.DIALOG.apply(self)
        self.setFixedSize(self.size())

    def setTitleBarVisible(self, isVisible: bool):
        self.windowTitleLabel.setVisible(isVisible)


class MessageBox(MaskDialogBase, Ui_MessageBox):
    """ Message box """

    yesSignal = pyqtSignal()
    cancelSignal = pyqtSignal()

    def __init__(self, title: str, content: str, parent=None):
        super().__init__(parent=parent)
        self._setUpUi(title, content, self.widget)

        self.setShadowEffect(60, (0, 10), QColor(0, 0, 0, 50))
        self.setMaskColor(QColor(0, 0, 0, 76))
        self._hBoxLayout.removeWidget(self.widget)
        self._hBoxLayout.addWidget(self.widget, 1, Qt.AlignCenter)

        self.buttonGroup.setMinimumWidth(280)
        self.widget.setFixedSize(
            max(self.contentLabel.width(), self.titleLabel.width()) + 48,
            self.contentLabel.y() + self.contentLabel.height() + 105
        )

    def eventFilter(self, obj, e: QEvent):
        if obj is self.window():
            if e.type() == QEvent.Resize:
                self._adjustText()

        return super().eventFilter(obj, e)
