##
# This software was developed and / or modified by Raytheon Company,
# pursuant to Contract DG133W-05-CQ-1067 with the US Government.
#
# U.S. EXPORT CONTROLLED TECHNICAL DATA
# This software product contains export-restricted data whose
# export/transfer/disclosure is restricted by U.S. law. Dissemination
# to non-U.S. persons whether in the United States or abroad requires
# an export license or other authorization.
#
# Contractor Name:        Raytheon Company
# Contractor Address:     6825 Pine Street, Suite 340
#                         Mail Stop B8
#                         Omaha, NE 68106
#                         402.291.0100
#
# See the AWIPS II Master Rights File ("Master Rights File.pdf") for
# further licensing information.
##

from __future__ import print_function

import stomp
import socket
import sys
import time
import xml.etree.ElementTree as ET

import ThriftClient
from dynamicserialize.dstypes.com.raytheon.uf.common.alertviz import AlertVizRequest

#
# Provides a capability of constructing notification messages and sending
# them to a STOMP data source.
#
#
#     SOFTWARE HISTORY
#
#    Date            Ticket#       Engineer       Description
#    ------------    ----------    -----------    --------------------------
#    09/30/08                      chammack       Initial Creation.
#    11/03/10        5849          cjeanbap       Moved to awips package from
#                                                     com.raytheon.uf.tools.cli
#    01/07/11        5645          cjeanbap       Added audio file to Status Message.
#    05/27/11        3050          cjeanbap       Added if-statement to check Priority
#                                                 value
#    07/27/15        4654          skorolev       Added filters
#    11/11/15        5120          rferrel        Cannot serialize empty filters.
#    03/05/18        6899          dgilling       Update to latest version of stomp.py API.
#
class NotificationMessage:

   priorityMap = {
             0: 'CRITICAL',
             1: 'SIGNIFICANT',
             2: 'PROBLEM',
             3: 'EVENTA',
             4: 'EVENTB',
             5: 'VERBOSE'}

   def __init__(self, host='localhost', port=61999, message='', priority='PROBLEM', category="LOCAL", source="ANNOUNCER", audioFile="NONE", filters=None):
      self.host = host
      self.port = port
      self.message = message
      self.audioFile = audioFile
      self.source = source
      self.category = category
      self.filters = filters

      priorityInt = None

      try:
         priorityInt = int(priority)
      except:
         pass

      if priorityInt is None:
          #UFStatus.java contains mapping of Priority to Logging level mapping
          if priority == 'CRITICAL' or priority == 'FATAL':
            priorityInt = int(0)
          elif priority == 'SIGNIFICANT' or priority == 'ERROR':
              priorityInt = int(1)
          elif priority == 'PROBLEM' or priority == 'WARN':
              priorityInt = int(2)
          elif priority == 'EVENTA' or priority == 'INFO':
              priorityInt = int(3)
          elif priority == 'EVENTB':
              priorityInt = int(4)
          elif priority == 'VERBOSE' or priority == 'DEBUG':
              priorityInt = int(5)

      if (priorityInt < 0 or priorityInt > 5):
          print("Error occurred, supplied an invalid Priority value:", str(priorityInt))
          print("Priority values are 0, 1, 2, 3, 4 and 5.")
          sys.exit(1)

      if priorityInt is not None:
          self.priority = self.priorityMap[priorityInt]
      else:
          self.priority = priority

   def send(self):
       # depending on the value of the port number indicates the distribution
       # of the message to AlertViz
       # 9581 is global distribution thru ThriftClient to Edex
       # 61999 is local distribution
    if (int(self.port) == 61999):
        # use stomp.py
        conn = stomp.Connection(host_and_ports=[(self.host, 61999)],
                                timeout=5.)

        try:
            conn.start()
            conn.connect()

            sm = ET.Element("statusMessage")
            sm.set("machine", socket.gethostname())
            sm.set("priority", self.priority)
            sm.set("category", self.category)
            sm.set("sourceKey", self.source)
            sm.set("audioFile", self.audioFile)
            if self.filters:
                sm.set("filters", self.filters)
            msg = ET.SubElement(sm, "message")
            msg.text = self.message
            msg = ET.tostring(sm, "UTF-8")

            conn.send(destination='/queue/messages', body=msg, content_type='application/xml;charset=utf-8')
            time.sleep(2)
        finally:
            conn.stop()
    else:
        # use ThriftClient
        alertVizRequest = createRequest(self.message, self.priority, self.source, self.category, self.audioFile, self.filters)
        thriftClient = ThriftClient.ThriftClient(self.host, self.port, "/services")

        serverResponse = None
        try:
            serverResponse = thriftClient.sendRequest(alertVizRequest)
        except Exception as ex:
            print("Caught exception submitting AlertVizRequest:", str(ex))

        if (serverResponse != "None"):
            print("Error occurred submitting Notification Message to AlertViz receiver:", serverResponse)
            sys.exit(1)
        else:
            print("Response:", str(serverResponse))

def createRequest(message, priority, source, category, audioFile, filters):
    obj = AlertVizRequest()

    obj.setMachine(socket.gethostname())
    obj.setPriority(priority)
    obj.setCategory(category)
    obj.setSourceKey(source)
    obj.setMessage(message)
    if (audioFile is not None):
        obj.setAudioFile(audioFile)
    else:
        obj.setAudioFile('\0')
    obj.setFilters(filters)
    return obj

if __name__ == '__main__':
    main()