from typing import List

from PyQt5.QtCore import QSize, Qt
from PyQt5.QtGui import QCursor
from PyQt5.QtWidgets import QMessageBox, QVBoxLayout, QLabel, QWidget, QScrollArea, QFrame

from bauh.api.abstract.view import ViewComponent
from bauh.view.qt import css
from bauh.view.qt.components import to_widget
from bauh.view.util.translation import I18n


class ConfirmationDialog(QMessageBox):

    def __init__(self, title: str, body: str, i18n: I18n, screen_size: QSize,  components: List[ViewComponent] = None,
                 confirmation_label: str = None, deny_label: str = None, deny_button: bool = True, window_cancel: bool = True,
                 confirmation_button: bool = True):
        super(ConfirmationDialog, self).__init__()

        if not window_cancel:
            self.setWindowFlags(Qt.CustomizeWindowHint | Qt.WindowTitleHint)

        self.setWindowTitle(title)
        self.setStyleSheet('QLabel { margin-right: 25px; }')

        self.bt_yes = None
        if confirmation_button:
            self.bt_yes = self.addButton(i18n['popup.button.yes'] if not confirmation_label else confirmation_label.capitalize(), QMessageBox.YesRole)
            self.bt_yes.setCursor(QCursor(Qt.PointingHandCursor))
            self.bt_yes.setStyleSheet(css.OK_BUTTON)
            self.setDefaultButton(self.bt_yes)

        if deny_button:
            self.bt_no = self.addButton(i18n['popup.button.no'] if not deny_label else deny_label.capitalize(), QMessageBox.NoRole)
            self.bt_no.setCursor(QCursor(Qt.PointingHandCursor))

            if not confirmation_button:
                self.bt_no.setStyleSheet(css.OK_BUTTON)
                self.setDefaultButton(self.bt_no)

        label = None
        if body:
            if not components:
                self.setIcon(QMessageBox.Question)
            label = QLabel(body)
            self.layout().addWidget(label, 0, 1)

        width = 0
        if components:
            scroll = QScrollArea(self)
            scroll.setFrameShape(QFrame.NoFrame)
            scroll.setWidgetResizable(True)

            comps_container = QWidget()
            comps_container.setLayout(QVBoxLayout())
            scroll.setWidget(comps_container)

            height = 0

            for idx, comp in enumerate(components):
                inst = to_widget(comp, i18n)
                height += inst.sizeHint().height()

                if inst.sizeHint().width() > width:
                    width = inst.sizeHint().width()

                comps_container.layout().addWidget(inst)

            height = height if height < int(screen_size.height() / 2.5) else int(screen_size.height() / 2.5)

            scroll.setFixedHeight(height)

            self.layout().addWidget(scroll, 1 if body else 0, 1)

            if label and comps_container.sizeHint().width() > label.sizeHint().width():
                label.setText(label.text() + (' ' * int(comps_container.sizeHint().width() - label.sizeHint().width())))
        if not body and width > 0:
            self.layout().addWidget(QLabel(' ' * int(width / 2)), 1, 1)

        self.exec_()

    def is_confirmed(self) -> bool:
        return bool(self.bt_yes and self.clickedButton() == self.bt_yes)