#!/usr/bin/env python3
import dbus
import time
import queue
import threading
from gi.repository import GLib
import dbus
from dbus.mainloop.glib import DBusGMainLoop


class Notification:
    """
    Reprensent a notification

    :param name str:
        This is the optional name of the application sending the notification.
        This should be the application's formal name, rather than some sort of
        ID. An example would be "FredApp E-Mail Client," rather than
        "fredapp-email-client."

    :param notification_id int:
        An optional ID of an existing notification that this notification is
        intended to replace.

    :param notification_icon str:
        The notification icon.(not yet fully understood, use at your own risks)

    :param title str:
        This is a single line overview of the notification. For instance, "You
        have mail" or "A friend has come online". It should generally not be
        longer than 40 characters, though this is not a requirement, and server
        implementations should word wrap if necessary.

    :param content str:
        This is a multi-line body of text. Each line is a paragraph, server
        implementations are free to word wrap them as they see fit.
        The body functionality may not be implemented by the notification
        server, conforming clients should check if it is available before usings
        it (see the GetCapabilities message in Protocol). An implementation is
        free to ignore any requested by the client. As an example one possible
        rendering of actions would be as buttons in the notification popup.
        Actions are sent over as a list of pairs. Each even element in the list
        (starting at index 0) represents the identifier for the action. Each
        odd element in the list is the localized string that will be displayed
        to the user. The default action (usually invoked by clicking the
        notification) should have a key named "default". The name can be
        anything, though implementations are free not to display it.

    :param hints dict:
        Hints are a way to provide extra data to a notification server that the
        server may be able to make use of. See
        https://specifications.freedesktop.org/notification-spec/notification-\
        spec-latest.html#hints for a list of available hints.

    :param timeout int:
        The timeout time in milliseconds since the display of the notification
        at which the notification should automatically close. If -1,
        the notification's expiration time is dependent on the notification
        server's settings, and may vary for the type of notification.
        If 0, the notification never expires.
    """
    def __init__(self,
                 name: str = "",
                 notification_id: int = 0,
                 notification_icon: str = "",
                 title: str = "",
                 content: str = "",
                 actions: list = None,
                 hints: dict = None,
                 timeout: int = -1
                 ) -> None:
        self.name = name
        self.notification_id = notification_id
        self.notification_icon = notification_icon
        self.title = title
        self.content = content
        self.actions = actions if actions is not None else []
        self.hints = hints if hints is not None else {"urgency": 1}
        self.timeout = timeout

    def __str__(self) -> str:
        return f"""{80*"_"}
Notification :
name = {self.name}
notification_id = {self.notification_id}sleep
notification_icon = {self.notification_icon}
title = {self.title}
content = {self.content}
actions = {self.actions}
hints = {self.hints}
timeout = {self.timeout}
{80*"_"}"""

    def show(self):
        """
        Display the notification by sending notification event
        to the dbus interface
        """
        obj = dbus.Interface(dbus.SessionBus()
                             .get_object("org.freedesktop.Notifications",
                                         "/org/freedesktop/Notifications"),
                             "org.freedesktop.Notifications")
        obj.Notify(self.name,
                   self.notification_id,
                   self.notification_icon,
                   self.title,
                   self.content,
                   self.actions,
                   self.hints,
                   self.timeout)


notification_queue = queue.Queue()

def log_notification(bus, message):
    keys = ["app_name", "replaces_id", "app_icon", "summary",
            "body", "actions", "hints", "expire_timeout"]
    args = message.get_args_list()
    if len(args) == 8:
        notif = dict([(keys[i], args[i]) for i in range(8)])
        notif = Notification(args[0],
                             args[1],
                             args[2],
                             args[3],
                             args[4],
                             list(args[5]),
                             dict(args[6]),
                             args[7],)
        notification_queue.put(notif)


stop_event = threading.Event()

def monitor_notifications():
    loop = DBusGMainLoop(set_as_default=True)
    session_bus = dbus.SessionBus()
    session_bus.add_match_string(
        "type='method_call',interface='org.freedesktop.Notifications'\
,member='Notify',eavesdrop=true")
    session_bus.add_message_filter(log_notification)
    while not stop_event.is_set():
        GLib.MainLoop().run()

thread = threading.Thread(target=monitor_notifications)
thread.daemon = True


def start_monitoring():
    thread.start()

def stop_monitoring():
    stop_event.set()

if __name__ == "__main__":
    n = Notification(title="test",content="je suis le test")
    n.show()