#!/usr/bin/env python

# TODO: openbmc/openbmc#2994 remove python 2 support
try:  # python 2
    import gobject
except ImportError:  # python 3
    from gi.repository import GObject as gobject
import dbus
import dbus.service
import dbus.mainloop.glib
import obmc.sensors
from obmc.dbuslib.bindings import DbusProperties, DbusObjectManager, get_dbus

try:
    import obmc_system_config as System
    has_system = True
except ImportError:
    has_system = False

DBUS_NAME = 'org.openbmc.Sensors'
OBJ_PATH = '/org/openbmc/sensors'


class SensorManager(DbusProperties, DbusObjectManager):
    def __init__(self, bus, name):
        super(SensorManager, self).__init__(
            conn=bus,
            object_path=name)

    @dbus.service.method(
        DBUS_NAME, in_signature='ss', out_signature='')
    def register(self, object_name, obj_path):
        if obj_path not in self.objects:
            print("Register: "+object_name+" : "+obj_path)
            sensor = eval('obmc.sensors.'+object_name+'(bus,obj_path)')
            self.add(obj_path, sensor)

    @dbus.service.method(
        DBUS_NAME, in_signature='s', out_signature='')
    def delete(self, obj_path):
        if obj_path in self.objects:
            print("Delete: "+obj_path)
            self.remove(obj_path)

    def SensorChange(self, value, path=None):
        if path in self.objects:
            self.objects[path].setValue(value)
        else:
            print("ERROR: Sensor not found: "+path)


if __name__ == '__main__':
    dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
    bus = get_dbus()
    root_sensor = SensorManager(bus, OBJ_PATH)

    # instantiate non-polling sensors
    # these don't need to be in separate process
    if has_system:
        for (id, the_sensor) in list(System.MISC_SENSORS.items()):
            sensor_class = the_sensor['class']
            obj_path = System.ID_LOOKUP['SENSOR'][id]
            sensor_obj = getattr(obmc.sensors, sensor_class)(bus, obj_path)
            if 'os_path' in the_sensor:
                sensor_obj.sysfs_attr = the_sensor['os_path']
            root_sensor.add(obj_path, sensor_obj)

    mainloop = gobject.MainLoop()

    root_sensor.unmask_signals()
    name = dbus.service.BusName(DBUS_NAME, bus)
    print("Starting sensor manager")
    mainloop.run()

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