# -*- coding: utf-8 -*-
#
# This file is part of the SDP project
#
#
#
# Distributed under the terms of the APACHE license.
# See LICENSE.txt for more info.

""" SDP Device Server for LOFAR2.0

"""

# PyTango imports
from tango.server import run
from tango.server import device_property
# Additional import

from clients.opcua_connection import OPCUAConnection
from util.attribute_wrapper import *
from util.hardware_device import *
from util.lofar_logging import device_logging_to_python


__all__ = ["SDP", "main"]

@device_logging_to_python({"device": "SDP"})
class SDP(hardware_device):
    """

    **Properties:**

    - Device Property
        OPC_Server_Name
            - Type:'DevString'
        OPC_Server_Port
            - Type:'DevULong'
        OPC_Time_Out
            - Type:'DevDouble'
    """

    # -----------------
    # Device Properties
    # -----------------

    OPC_Server_Name = device_property(
        dtype='DevString',
        mandatory=True
    )

    OPC_Server_Port = device_property(
        dtype='DevULong',
        mandatory=True
    )

    OPC_Time_Out = device_property(
        dtype='DevDouble',
        mandatory=True
    )

    # ----------
    # Attributes
    # ----------
    fpga_mask_RW = attribute_wrapper(comms_annotation=["1:fpga_mask_RW"], datatype=numpy.bool_, dims=(16,), access=AttrWriteType.READ_WRITE)
    fpga_scrap_R = attribute_wrapper(comms_annotation=["1:fpga_scrap_R"], datatype=numpy.int32, dims=(2048,))
    fpga_scrap_RW = attribute_wrapper(comms_annotation=["1:fpga_scrap_RW"], datatype=numpy.int32, dims=(2048,), access=AttrWriteType.READ_WRITE)
    fpga_status_R = attribute_wrapper(comms_annotation=["1:fpga_status_R"], datatype=numpy.bool_, dims=(16,))
    fpga_temp_R = attribute_wrapper(comms_annotation=["1:fpga_temp_R"], datatype=numpy.float_, dims=(16,))
    fpga_version_R = attribute_wrapper(comms_annotation=["1:fpga_version_R"], datatype=numpy.str_, dims=(16,))
    fpga_weights_R = attribute_wrapper(comms_annotation=["1:fpga_weights_R"], datatype=numpy.int16, dims=(16, 12 * 488 * 2))
    fpga_weights_RW = attribute_wrapper(comms_annotation=["1:fpga_weights_RW"], datatype=numpy.int16, dims=(16, 12 * 488 * 2), access=AttrWriteType.READ_WRITE)
    tr_busy_R = attribute_wrapper(comms_annotation=["1:tr_busy_R"], datatype=numpy.bool_)
    # NOTE: typo in node name is 'tr_reload_W' should be 'tr_reload_RW'
    tr_reload_RW = attribute_wrapper(comms_annotation=["1:tr_reload_W"], datatype=numpy.bool_, access=AttrWriteType.READ_WRITE)
    tr_tod_R = attribute_wrapper(comms_annotation=["1:tr_tod_R"], datatype=numpy.uint64)
    tr_uptime_R = attribute_wrapper(comms_annotation=["1:tr_uptime_R"], datatype=numpy.uint64)

    def always_executed_hook(self):
        """Method always executed before any TANGO command is executed."""
        pass

    def delete_device(self):
        """Hook to delete resources allocated in init_device.

        This method allows for any memory or other resources allocated in the
        init_device method to be released.  This method is called by the device
        destructor and by the device Init command (a Tango built-in).
        """
        self.debug_stream("Shutting down...")

        self.Off()
        self.debug_stream("Shut down.  Good bye.")

    # --------
    # overloaded functions
    # --------
    def off(self):
        """ user code here. is called when the state is set to OFF """

        # Stop keep-alive
        self.opcua_connection.stop()

    def initialise(self):
        """ user code here. is called when the sate is set to INIT """
        """Initialises the attributes and properties of the PCC."""

        # set up the OPC ua client
        self.OPCua_client = OPCUAConnection("opc.tcp://{}:{}/".format(self.OPC_Server_Name, self.OPC_Server_Port), "http://lofar.eu", self.OPC_Time_Out, self.Standby, self.Fault, self)

        # will contain all the values for this object
        self.setup_value_dict()

        # map an access helper class
        for i in self.attr_list():
            i.set_comm_client(self.OPCua_client)

        self.OPCua_client.start()

    # --------
    # Commands
    # --------

# ----------
# Run server
# ----------
def main(args=None, **kwargs):
    """Main function of the SDP module."""
    return run((SDP,), args=args, **kwargs)


if __name__ == '__main__':
    main()