#!/usr/bin/env python3
# -*- coding: utf-8 -*-
from PyQt5.QtGui import QGuiApplication, QIcon, QScreen
from PyQt5.QtQuick import QQuickView
from PyQt5.QtCore import (
    QUrl,
    QLocale,
    QTranslator,
    QLibraryInfo,
    QVariant,
    QAbstractListModel,
    QModelIndex,
    Qt,
    QObject,
    pyqtSlot,
    pyqtSignal,
    QCoreApplication,
)
from PyQt5.QtNetwork import QNetworkConfigurationManager, QNetworkConfiguration
import sys
import os
import subprocess
from helpers import get_desktop_name, get_desktop_name2, is_installed
import pwd

# Workaround for opengl lib selection
from OpenGL import GL

translate = QCoreApplication.translate

class Networkstate(QObject):
    def __init__(self):
        QObject.__init__(self)
    
    @pyqtSlot(result=bool)
    def isOffLine(self):
        # Search active network connections
        net = QNetworkConfigurationManager()
        return not net.isOnline()


class ConfList(QAbstractListModel):
    NameRole = Qt.UserRole + 1

    def __init__(self, parent=None):
        super().__init__(parent)
        # Changing working directory
        abspath = os.path.abspath(__file__)
        dname = os.path.dirname(abspath)
        os.chdir(dname)

        # collect sys info
        release = subprocess.getoutput("lsb_release -sd")
        release = release[1:-1]
        release_nb = subprocess.getoutput("lsb_release -sr")
        release_nb = release_nb.strip()
        kernel = subprocess.getoutput("uname -r")
        if os.uname()[4] == ("x86_64", "aarch64"):
            arch = "64-bit"
        elif os.uname()[4] in ("i586", "i686", "armv7hl"):
            arch = "32-bit"
        else:
            arch = os.uname()[4]
        try:
            desktop = get_desktop_name(os.path.basename(os.getenv("DESKTOP_SESSION")))
        except:
            desktop = "Other"

        if desktop == "Other":
            desktop = get_desktop_name2(os.getenv("XDG_CURRENT_DESKTOP"))
            if desktop == "unknown":
                desktop = os.getenv("XDG_CURRENT_DESKTOP")
        self.screen_factor = 0.0
        if desktop == "Gnome Wayland":
            import gi

            gi.require_version("Gdk", "3.0")
            from gi.repository.Gdk import Display

            # pre-3.22, otherwise deprecated
            # factor = Gdk.Screen.get_default().get_monitor_scale_factor(0)
            self.screen_factor = Display.get_default().get_monitor(0).get_scale_factor()

        # Search active network connections
        net = QNetworkConfigurationManager()
        first = True
        if net.isOnline():
            confs = net.allConfigurations(QNetworkConfiguration.Active)
            for conf in confs:
                if first:
                    netconfs = conf.name()
                    first = False
                else:
                    netconfs += ", " + conf.name()

        self.configuration = [
            {
                "name": translate(
                    "ConfList", "<b>Congratulations!</b><BR />You are now running {}"
                ).format(release)
            },
            {
                "name": translate("ConfList", "You are using linux kernel: {}").format(
                    kernel
                )
            },
            {
                "name": translate("ConfList", "Your system architecture is: {}").format(
                    arch
                )
            },
            {
                "name": translate(
                    "ConfList", "You are now using the Desktop: {}"
                ).format(desktop)
            },
            {"name": translate("ConfList", "Your user id is: {}").format(os.getuid())},
        ]
        if net.isOnline():
            self.configuration.append(
                {
                    "name": translate(
                        "ConfList", "You are connected to a network through {}"
                    ).format(netconfs)
                }
            )
        else:
            self.configuration.append(
                {"name": translate("ConfList", "You have no network connection")}
            )

    def factor(self, app):
        """
        Determine screen factor
        Can be specific for Gnome Wayland
        """
        if self.screen_factor == 0:
            screen = app.primaryScreen()
            self.screen_factor = screen.devicePixelRatio()
        return self.screen_factor

    def data(self, index, role=Qt.DisplayRole):
        row = index.row()
        return self.configuration[row]["name"]

    def rowCount(self, parent=QModelIndex()):
        return len(self.configuration)

    def roleNames(self):
        return {
            ConfList.NameRole: b"name",
        }


class Callbrowser(QObject):
    def __init__(self):
        QObject.__init__(self)

    @pyqtSlot(str)
    def weblink(self, link):
        subprocess.Popen(["xdg-open", link])


class Launcher(QObject):
    installed = pyqtSignal()
    needed = pyqtSignal(str, arguments=["repo"])
    repo = pyqtSignal()
    noprogram = pyqtSignal()

    def __init__(self):
        QObject.__init__(self)

    @pyqtSlot(QVariant)
    def command(self, app):
        if app.isArray():
            cmd = []
            for i in range(0, app.property("length").toInt()):
                cmd.append(app.property(i).toString())
            self._command(cmd[0])

    def _command(self, cmd):
            try:
                subprocess.Popen(cmd)
            except:
                print(f"Exception running {cmd}")
                self.noprogram.emit()
                return

    @pyqtSlot(QVariant)
    def install(self, app):
        if app.isArray():
            cmd = []
            # app should contain package, repository
            for i in range(0, app.property("length").toInt()):
                cmd.append(app.property(i).toString())
            repo = cmd[1]
            # Check if repositories are enabled
            core = False
            updates = False
            tainted = False
            t_updates = False
            nonfree = False
            nf_updates = False
            core32 = False
            core32_updates = False
            try:
                active = subprocess.run(
                    ["urpmq", "--list-media", "active"], capture_output=True, text=True
                )
                active.check_returncode()
            except subprocess.CalledProcessError:
                print("Error with urpmq")
                return
            for line in active.stdout.splitlines():
                if line.startswith("Core Release"):
                    core = True
                if line.startswith("Core Updates"):
                    updates = True
                if line.startswith("Tainted Release"):
                    tainted = True
                if line.startswith("Tainted Updates"):
                    t_updates = True
                if line.startswith("Nonfree Release"):
                    nonfree = True
                if line.startswith("Nonfree Updates"):
                    nf_updates = True
                if line.startswith("Core 32bit Release"):
                    core32 = True
                if line.startswith("Core 32bit Updates"):
                    core32_updates = True
            if repo == "tainted" and not (tainted and t_updates):
                #   repo tainted not enabled
                self.needed.emit(repo)
                return
            if repo == "non-free" and not (nonfree and nf_updates):
                #   repo nonfree not enabled
                self.needed.emit(repo)
                return
            if repo == "steam" and not (
                core32 and core32_updates and nonfree and nf_updates
            ):
                #   repo not enabled
                self.needed.emit(repo)
                return
            if repo == "" and not (core and updates):
                #   repo not enabled
                self.repo.emit()
                return
            proc = subprocess.Popen(["/usr/bin/gurpmi", cmd[0]])
            proc.wait()
            # Give the signal to reload the applist
            self.installed.emit()
            return

    @pyqtSlot(QVariant)
    def install_and_launch(self, app):
        """
        app should be an array with the package name to install and then the command to launch
        """
        if app.isArray():
            cmd = []
            # app should contain package, repository
            for i in range(0, app.property("length").toInt()):
                cmd.append(app.property(i).toString())
            print(cmd)
            is_app_installed, inst_repo = is_installed(cmd[0])
            if not is_app_installed:
                proc = subprocess.Popen(["/usr/bin/gurpmi", cmd[0]])
                proc.wait()
            self._command(cmd[1])

class Norun(QObject):
    def __init__(self):
        QObject.__init__(self)
        self.home = os.getenv("HOME")
        self.conffile = self.home + "/.config/mageiawelcome/norun.flag"

    @pyqtSlot(bool)
    def setRunAtLaunch(self, checked):
        print("Setting", checked)
        if checked:
            if os.path.exists(self.conffile):
                os.remove(self.conffile)
        else:
            os.makedirs(self.home + "/.config/mageiawelcome", exist_ok=True)
            with open(self.conffile, "w"):
                pass

    @pyqtSlot(result=bool)
    def startupcheck(self):
        return not os.path.exists(self.conffile)


class Installable(QObject):
    def __init__(self):
        QObject.__init__(self)

    @pyqtSlot(str, str, result=bool)
    def installable(self, app, repo):
        is_app_installed, inst_repo = is_installed(app)
        installable = (not is_app_installed) or (repo != inst_repo and inst_repo == "")
        return installable

    @pyqtSlot(str, str, result=bool)
    def other(self, app, repo):
        is_app_installed, inst_repo = is_installed(app)
        return is_app_installed and repo == "" and inst_repo != ""


def username():
    user = pwd.getpwuid(os.getuid())[4]  # pw_gecos, i e the real name
    if user == "":
        user = pwd.getpwuid(os.getuid())[0]  # login
    return user


if __name__ == "__main__":
    app = QGuiApplication(sys.argv)
    locale = QLocale.system().name()
    qtTranslator = QTranslator()
    if qtTranslator.load(
        "qt_" + locale, QLibraryInfo.location(QLibraryInfo.TranslationsPath)
    ):
        app.installTranslator(qtTranslator)
    appTranslator = QTranslator()
    if appTranslator.load(
        QLocale(), "mageiawelcome", "_", "/usr/share/mageiawelcome/translations"
    ):
        app.installTranslator(appTranslator)
    app.setOrganizationName("Mageia")
    app.setApplicationName("Mageiawelcome")
    view = QQuickView()
    view.setResizeMode(QQuickView.SizeRootObjectToView)
    view.setTitle(app.translate("app", "Welcome to Mageia"))
    app.setWindowIcon(QIcon("/usr/share/icons/hicolor/32x32/apps/mageiawelcome.png"))
    cb = Callbrowser()
    la = Launcher()
    us = username()
    ins = Installable()
    cl = ConfList()
    nr = Norun()
    ns = Networkstate()
    sc = nr.startupcheck()
    factor = cl.factor(app)
    screen = app.primaryScreen()
    # if density is high, use at least factor 2 to scale the initial window. Considering high is more than 190 px/inches.
    if screen.logicalDotsPerInch() > 190:
        factor = max(2.0, factor)
    defaultHeight = min(int(700 * factor), screen.availableGeometry().height())
    defaultWidth = min(int(1000 * factor), screen.availableGeometry().width())
    centerPoint = screen.availableGeometry().center()
    view.setGeometry(
        centerPoint.x() - defaultWidth // 2,
        centerPoint.y() - defaultHeight // 2,
        defaultWidth,
        defaultHeight,
    )
    view.rootContext().setContextProperty("link", cb)
    view.rootContext().setContextProperty("launch", la)
    view.rootContext().setContextProperty("user", us)
    view.rootContext().setContextProperty("ConfList", cl)
    view.rootContext().setContextProperty("pyinstallable", ins)
    view.rootContext().setContextProperty("startupcheck", sc)
    view.rootContext().setContextProperty("norun", nr)
    view.rootContext().setContextProperty("networkstate", ns)
    current_path = os.path.abspath(os.path.dirname(__file__))
    qml_file = os.path.join(current_path, "mw-ui.qml")
    view.setSource(QUrl.fromLocalFile(qml_file))
    if view.status() == QQuickView.Error:
        for error in view.errors():
            print(error.description())
        sys.exit(-1)
    view.show()
    res = app.exec_()
    del view
    sys.exit(res)