# Created By: Virgil Dupras
# Created On: 2009-05-09
# Copyright 2015 Hardcoded Software (http://www.hardcoded.net)
#
# This software is licensed under the "GPLv3" License as described in the "LICENSE" file,
# which should be included with this package. The terms are also available at
# http://www.gnu.org/licenses/gpl-3.0.html

from PyQt6.QtCore import Qt, QCoreApplication, QTimer
from PyQt6.QtGui import QPixmap, QFont, QShowEvent
from PyQt6.QtWidgets import QDialog, QDialogButtonBox, QSizePolicy, QHBoxLayout, QVBoxLayout, QLabel, QWidget

from core.util import check_for_update
from qt.util import move_to_screen_center
from hscommon.trans import trget

from typing import TYPE_CHECKING

if TYPE_CHECKING:
    from qt.app import DupeGuru

tr = trget("ui")


class AboutBox(QDialog):
    def __init__(self, parent: QWidget, app: "DupeGuru", **kwargs) -> None:
        flags = (
            Qt.WindowType.CustomizeWindowHint
            | Qt.WindowType.WindowTitleHint
            | Qt.WindowType.WindowSystemMenuHint
            | Qt.WindowType.MSWindowsFixedSizeDialogHint
        )
        super().__init__(parent, flags, **kwargs)
        self.app = app
        self._setupUi()

    def _setupUi(self) -> None:
        self.setWindowTitle(tr("About {}").format(QCoreApplication.instance().applicationName()))
        size_policy = QSizePolicy(QSizePolicy.Policy.Fixed, QSizePolicy.Policy.Fixed)
        self.setSizePolicy(size_policy)
        main_layout = QHBoxLayout(self)

        logo_label = QLabel()
        logo_label.setPixmap(QPixmap(f"images:{self.app.LOGO_NAME}_128.png"))
        main_layout.addWidget(logo_label)

        detail_layout = QVBoxLayout()

        name_label = QLabel()
        font = QFont()
        font.setWeight(75)
        font.setBold(True)
        name_label.setFont(font)
        name_label.setText(QCoreApplication.instance().applicationName())
        detail_layout.addWidget(name_label)

        version_label = QLabel()
        version_label.setText(tr("Version {}").format(QCoreApplication.instance().applicationVersion()))
        detail_layout.addWidget(version_label)

        self.update_label = QLabel(tr("Checking for updates..."))
        self.update_label.setTextInteractionFlags(Qt.TextInteractionFlag.TextBrowserInteraction)
        self.update_label.setOpenExternalLinks(True)
        detail_layout.addWidget(self.update_label)

        license_label = QLabel()
        license_label.setText(tr("Licensed under GPLv3"))
        detail_layout.addWidget(license_label)

        spacer_label = QLabel()
        spacer_label.setFont(font)
        detail_layout.addWidget(spacer_label)

        button_box = QDialogButtonBox()
        button_box.setOrientation(Qt.Orientation.Horizontal)
        button_box.setStandardButtons(QDialogButtonBox.StandardButton.Ok)
        detail_layout.addWidget(button_box)

        main_layout.addLayout(detail_layout)

        button_box.accepted.connect(self.accept)
        button_box.rejected.connect(self.reject)

    def _check_for_update(self) -> None:
        update = check_for_update(QCoreApplication.instance().applicationVersion(), include_prerelease=False)
        if update is None:
            self.update_label.setText(tr("No update available."))
        else:
            self.update_label.setText(
                tr('New version {} available, download <a href="{}">here</a>.').format(update["version"], update["url"])
            )

    def showEvent(self, event: QShowEvent) -> None:
        self.update_label.setText(tr("Checking for updates..."))
        # have to do this here as the frameGeometry is not correct until shown
        move_to_screen_center(self)
        super().showEvent(event)
        QTimer.singleShot(0, self._check_for_update)