import sys

from PySide6.QtCore import Signal
from PySide6.QtGui import Qt
from PySide6.QtWidgets import QLabel, QFrame, QPushButton, QVBoxLayout, QHBoxLayout, QApplication

from app.common.Manager import UserManager
from qfluentwidgets import FluentStyleSheet, PrimaryPushButton, TextWrap, LineEdit, InfoBar, InfoBarPosition

from qfluentwidgets.components.dialog_box.dialog import Ui_MessageBox
from qframelesswindow import FramelessDialog


class AddBookInstance:
    yesSignal = Signal()
    cancelSignal = Signal()

    def __init__(self, *args, **kwargs):
        pass

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

        self.ISBN = LineEdit()
        self.ISBNBox = QHBoxLayout()
        self.ISBN_text = QLabel('ISBN', parent)
        self.ISBNBox.addWidget(self.ISBN_text)
        self.ISBNBox.addWidget(self.ISBN)

        self.location = LineEdit()
        self.locationBox = QHBoxLayout()
        self.location_text = QLabel('藏书位置', parent)
        self.locationBox.addWidget(self.location_text)
        self.locationBox.addWidget(self.location)

        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._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.addLayout(self.ISBNBox)
        self.vBoxLayout.addLayout(self.locationBox)

        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.ISBNBox.setContentsMargins(24, 24, 24, 24)
        self.locationBox.setContentsMargins(24, 24, 24, 24)

        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.buttonGroup.setObjectName('buttonGroup')
        self.cancelButton.setObjectName('cancelButton')

        FluentStyleSheet.DIALOG.apply(self)

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


class AddBookInstanceDialog(FramelessDialog, AddBookInstance):
    yesSignal = Signal()
    cancelSignal = Signal()

    def __init__(self, parent=None):
        super().__init__(parent=parent)
        self._setUpUi("图书添加", self)

        self.windowTitleLabel = QLabel("图书添加", self)

        self.setResizeEnabled(False)
        self.resize(540, 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())

        self.yesButton.clicked.connect(self.addBook)

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

    def addBook(self):
        isbn = self.ISBN.text()
        location = self.location.text()

        if isbn == '' or location == '':
            InfoBar.warning(
                title='操作失败',
                content="你填写的内容不够完全!",
                orient=Qt.Horizontal,
                isClosable=False,  # disable close button
                position=InfoBarPosition.TOP_LEFT,
                duration=2000,
                parent=self
            )
        else:
            true = UserManager.addBookInstance(isbn, location)
            if true:
                self.ISBN.clear()
                InfoBar.success(
                    title='添加书籍信息成功',
                    content="添加书籍信息成功,你可以继续添加书籍或退出此界面.",
                    orient=Qt.Horizontal,
                    isClosable=True,
                    position=InfoBarPosition.TOP,
                    duration=2000,
                    parent=self
                )
            else:
                InfoBar.error(
                    title='操作失败',
                    content="也许你还未录入该书籍信息",
                    orient=Qt.Horizontal,
                    isClosable=True,
                    position=InfoBarPosition.BOTTOM_RIGHT,
                    duration=-1,  # won't disappear automatically
                    parent=self
                )