# Copyright 2021 Erfan Abdi
# SPDX-License-Identifier: GPL-3.0-or-later
import logging
import os
import threading
import tools.config
from tools.interfaces import IUserMonitor
from tools.interfaces import IPlatform

stopping = False

def start(args, session, unlocked_cb=None):

    def makeDesktopFile(appInfo):
        showApp = False
        for cat in appInfo["categories"]:
            if cat.strip() == "android.intent.category.LAUNCHER":
                showApp = True
        if not showApp:
            return -1
        
        packageName = appInfo["packageName"]

        desktop_file_path = args.apps_dir + "/waydroid." + packageName + ".desktop"
        if not os.path.exists(desktop_file_path):
            lines = ["[Desktop Entry]", "Type=Application"]
            lines.append("Name=" + appInfo["name"])
            lines.append("Exec=waydroid app launch " + packageName)
            lines.append("Icon=" + args.waydroid_data + "/icons/" + packageName + ".png")
            lines.append("X-Purism-FormFactor=Workstation;Mobile;")
            desktop_file = open(desktop_file_path, "w")
            for line in lines:
                desktop_file.write(line + "\n")
            desktop_file.close()
            os.chmod(desktop_file_path, 0o755)
            return 0

    def makeWaydroidDesktopFile(hide):
        desktop_file_path = args.apps_dir + "/Waydroid.desktop"
        if os.path.isfile(desktop_file_path):
            os.remove(desktop_file_path)
        lines = ["[Desktop Entry]", "Type=Application"]
        lines.append("Name=Waydroid")
        lines.append("Exec=waydroid show-full-ui")
        lines.append("X-Purism-FormFactor=Workstation;Mobile;")
        if hide:
            lines.append("NoDisplay=true")
        lines.append("Icon=" + tools.config.tools_src + "/data/AppIcon.png")
        desktop_file = open(desktop_file_path, "w")
        for line in lines:
            desktop_file.write(line + "\n")
        desktop_file.close()
        os.chmod(desktop_file_path, 0o755)

    def userUnlocked(uid):
        logging.info("Android with user {} is ready".format(uid))
        args.waydroid_data = session["waydroid_data"]
        args.apps_dir = session["xdg_data_home"] + \
            "/applications/"

        platformService = IPlatform.get_service(args)
        if platformService:
            if not os.path.exists(args.apps_dir):
                os.mkdir(args.apps_dir)
                os.chmod(args.apps_dir, 0o700)
            appsList = platformService.getAppsInfo()
            for app in appsList:
                makeDesktopFile(app)
            multiwin = platformService.getprop("persist.waydroid.multi_windows", "false")
            if multiwin == "false":
                makeWaydroidDesktopFile(False)
            else:
                makeWaydroidDesktopFile(True)
        if unlocked_cb:
            unlocked_cb()

    def packageStateChanged(mode, packageName, uid):
        platformService = IPlatform.get_service(args)
        if platformService:
            appInfo = platformService.getAppInfo(packageName)
            desktop_file_path = args.apps_dir + "/waydroid." + packageName + ".desktop"
            if mode == 0:
                # Package added
                makeDesktopFile(appInfo)
            elif mode == 1:
                if os.path.isfile(desktop_file_path):
                    os.remove(desktop_file_path)
            else:
                if os.path.isfile(desktop_file_path):
                    if makeDesktopFile(appInfo) == -1:
                        os.remove(desktop_file_path)

    def service_thread():
        while not stopping:
            IUserMonitor.add_service(args, userUnlocked, packageStateChanged)

    global stopping
    stopping = False
    args.user_manager = threading.Thread(target=service_thread)
    args.user_manager.start()

def stop(args):
    global stopping
    stopping = True
    try:
        if args.userMonitorLoop:
            args.userMonitorLoop.quit()
    except AttributeError:
        logging.debug("UserMonitor service is not even started")