#!/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 os
from obmc.dbuslib.bindings import DbusProperties, DbusObjectManager, get_dbus
import obmc.enums
import obmc_system_config as System
import obmc.inventory
import obmc.system

DBUS_NAME = 'org.openbmc.managers.System'
OBJ_NAME = '/org/openbmc/managers/System'
INTF_SENSOR = 'org.openbmc.SensorValue'

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

        # replace symbolic path in ID_LOOKUP
        for category in System.ID_LOOKUP:
            for key in System.ID_LOOKUP[category]:
                val = System.ID_LOOKUP[category][key]
                new_val = val.replace(
                    "<inventory_root>", obmc.inventory.INVENTORY_ROOT)
                System.ID_LOOKUP[category][key] = new_val

        print("SystemManager Init Done")

    def doObjectLookup(self, category, key):
        obj_path = ""
        intf_name = INTF_SENSOR
        try:
            obj_path = System.ID_LOOKUP[category][key]
            parts = obj_path.split('/')
            if (parts[3] != 'sensors'):
                print ("ERROR SystemManager: SENSOR only supported type")
                intf_name = ""
        except Exception as e:
            print ("ERROR SystemManager: "+str(e)+" not found in lookup")

        return [obj_path, intf_name]

    @dbus.service.method(DBUS_NAME, in_signature='ss', out_signature='(ss)')
    def getObjectFromId(self, category, key):
        return self.doObjectLookup(category, key)

    @dbus.service.method(DBUS_NAME, in_signature='sy', out_signature='(ss)')
    def getObjectFromByteId(self, category, key):
        byte = int(key)
        return self.doObjectLookup(category, byte)

    @dbus.service.method(DBUS_NAME, in_signature='s', out_signature='sis')
    def gpioInit(self, name):
        gpio_path = ''
        gpio_num = -1
        r = ['', gpio_num, '']
        if name not in System.GPIO_CONFIG:
            # TODO: Better error handling
            msg = "ERROR: "+name+" not found in GPIO config table"
            print(msg)
            raise Exception(msg)
        else:

            gpio_num = -1
            gpio = System.GPIO_CONFIG[name]
            if 'gpio_num' in System.GPIO_CONFIG[name]:
                gpio_num = gpio['gpio_num']
            else:
                if 'gpio_pin' in System.GPIO_CONFIG[name]:
                    gpio_num = obmc.system.convertGpio(gpio['gpio_pin'])
                else:
                    msg = "ERROR: SystemManager - GPIO lookup failed for "+name
                    print(msg)
                    raise Exception(msg)

            if (gpio_num != -1):
                r = [obmc.enums.GPIO_DEV, gpio_num, gpio['direction']]
        return r

    @dbus.service.method(DBUS_NAME, in_signature='',
                         out_signature='ssa(sb)a(sb)a(sbb)ssssa(sb)')
    def getGpioConfiguration(self):
        power_config = System.GPIO_CONFIGS.get('power_config', {})
        power_good_in = power_config.get('power_good_in', '')
        latch_out = power_config.get('latch_out', '')
        power_up_outs = power_config.get('power_up_outs', [])
        reset_outs = power_config.get('reset_outs', [])
        pci_reset_outs = power_config.get('pci_reset_outs', [])
        hostctl_config = System.GPIO_CONFIGS.get('hostctl_config', {})
        fsi_data = hostctl_config.get('fsi_data', '')
        fsi_clk = hostctl_config.get('fsi_clk', '')
        fsi_enable = hostctl_config.get('fsi_enable', '')
        cronus_sel = hostctl_config.get('cronus_sel', '')
        optionals = hostctl_config.get('optionals', [])
        r = [power_good_in, latch_out, power_up_outs, reset_outs,
             pci_reset_outs, fsi_data, fsi_clk, fsi_enable, cronus_sel,
             optionals]
        print("Power GPIO config: " + str(r))
        return r


if __name__ == '__main__':
    dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
    bus = get_dbus()
    obj = SystemManager(bus, OBJ_NAME)
    mainloop = gobject.MainLoop()
    obj.unmask_signals()
    name = dbus.service.BusName(DBUS_NAME, bus)

    print("Running SystemManager")
    mainloop.run()

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