from PyQt6.QtCore import Qt
from PyQt6.QtGui import QFont, QPixmap
from PyQt6.QtWidgets import *


class AboutDialog(QDialog):
    """Dialog for showing info about RavenLog"""

    def __init__(self, parent=None):
        super(AboutDialog, self).__init__(parent)
        self.setWindowTitle(self.tr("About"))
        self.setModal(True)

        self.layout = QVBoxLayout(self)

        heading_app_name = QLabel("RavenLog")
        heading_app_name.setAlignment(Qt.AlignmentFlag.AlignLeft)
        heading_app_name.setFont(QFont("default", 25))
        heading_app_name.setTextInteractionFlags(Qt.TextInteractionFlag.TextSelectableByMouse)
        app_icon = QLabel()
        app_icon.setPixmap(QPixmap("icon6.png"))
        heading = QWidget(self)
        hbox = QHBoxLayout(heading)
        hbox.addWidget(app_icon)
        hbox.addWidget(heading_app_name)
        hbox.addSpacerItem(QSpacerItem(1, 1, hPolicy=QSizePolicy.Policy.Expanding))

        heading.layout = hbox
        self.layout.addWidget(heading)

        tabs = QTabWidget()
        tabs.addTab(self._about(), self.tr("About"))
        tabs.addTab(self._license(), self.tr("License"))

        self.layout.addWidget(tabs)

    def _about(self) -> QWidget:
        result = QWidget()
        result.layout = QVBoxLayout(result)

        download_url_lbl = QLabel(result)
        download_url_lbl.setMouseTracking(True)
        download_url_lbl.setAlignment(Qt.AlignmentFlag.AlignLeft)
        download_url_lbl.setTextInteractionFlags(Qt.TextInteractionFlag.LinksAccessibleByMouse)
        download_url_lbl.setOpenExternalLinks(True)
        download_url_lbl.setText('<a href=%s>%s</a>' %
                                 ('https://www.opentext.com/',
                                  self.tr("License: GNU Lesser General Public License v3")))
        result.layout.addWidget(QLabel(self.tr("Log file viewer")))
        result.layout.addWidget(QLabel(self.tr("(c) 2021 Open Text Corporation")))
        result.layout.addWidget(QLabel(self.tr("Log file viewer")))
        result.layout.addWidget(download_url_lbl)
        return result

    def _license(self) -> QWidget:
        result = QWidget()
        result.layout = QVBoxLayout(result)

        result.layout.addWidget(QLabel(self.tr("* Qt 6.2.0 (LGPLv3)")))
        result.layout.addWidget(QLabel(self.tr("* watchdog 2.16 (Apache)")))

        return result