#!/usr/bin/python3

from jeepney import Header, MessageType, Endianness, MessageFlag, new_method_return
from jeepney.bus_messages import message_bus
from jeepney.io.blocking import open_dbus_connection
from jeepney.wrappers import new_header

from .utils import *


class DBusProperties(DBusInterface):
    def get_all(self):
        body = ({},)
        return body

    def properties_changed(self, interface: str):
        body = None

        if interface == MPRIS_ROOT_INTERFACE:
            body = (MPRIS_ROOT_INTERFACE,) + self.server.root_interface.get_all()

        elif interface == MPRIS_PLAYER_INTERFACE:
            body = (MPRIS_PLAYER_INTERFACE,) + self.server.player_interface.get_all()

        signature = "" if body is None else "sa{sv}"

        msg = new_signal(
            self.server.bus_address.with_interface("org.freedesktop.DBus"),
            "PropertiesChanged",
            signature,
            body
        )
        self.server.bus.send(msg)

    def Get(self, msg: Message):
        interface_name = msg.body[0]

        return_msg = None

        if interface_name == PROPERTIES_INTERFACE:
            return self.get(msg)

        elif interface_name == MPRIS_ROOT_INTERFACE:
            return self.server.root_interface.get(msg)

        elif interface_name == MPRIS_PLAYER_INTERFACE:
            return self.server.player_interface.get(msg)

        else:
            return new_error(msg, *DBusErrors.invalidArgs(interface=interface_name))

    def GetAll(self, msg: Message):
        interface = msg.body[0]

        if interface == PROPERTIES_INTERFACE:
            body = self.get_all()

        elif interface == MPRIS_ROOT_INTERFACE:
            body = self.server.root_interface.get_all()

        elif interface == MPRIS_PLAYER_INTERFACE:
            body = self.server.player_interface.get_all()

        else:
            return new_error(msg, *DBusErrors.invalidArgs(interface=interface))

        return new_method_return(msg, "a{sv}", body)