"""
    This is an inbound application that rings the call for 2 seconds, 
    answers the call, then reads out the following text::

    "Welcome to your U.A.S application."
    "The voice you are hearing has been commanded by your machine."
    "The hostname of the machine is <hostname>."
    "The application parameter supplied to the application is <application_parameters>. Goodbye."

"""

__uas_identify__ = "application"
__uas_version__ = "1.0b3"

import sys, os, socket
from prosody.uas import Hangup, Error

def main(channel, application_instance_id, file_man, my_log, application_parameters):
    log_pref = "connection_test"
    call_to = channel.Details.call_to
    my_log.info("{0} started with call_to [{1}]".format(log_pref, call_to))

    #grab the machine hostname
    hostname = socket.gethostname()

    # Our default text for the application_parameters are "Nothing", which is replaced if there's any text to play
    test_args = "Nothing"
    if application_parameters != "":
        test_args = application_parameters

    # The main program
    try:
        # ring for two seconds
        channel.ring(2)
        # answer the call
        channel.answer()
        # say some text. The text is converted to speech using an inbuilt Text-To-Speech (TTS) converter
        channel.FilePlayer.say("Welcome to your U.A.S application. \
                                The voice you are hearing has been commanded by your machine. \
                                The hostname of the machine is {0}. \
                                The application parameters supplied to the application are {1}. Goodbye.".format(hostname, test_args))
        # Hang up the call!
        channel.hang_up()
        
    except Hangup as exc:
        my_log.info("{0} completed with Hangup".format(log_pref))

    except Error as exc:
        my_log.error("{0} completed with Error exception! {1}".format(log_pref, exc))
        return -101

    except Exception as exc:
        my_log.exception("{0} completed with exception! {1}".format(log_pref, exc))
        return -102

    my_log.info("{0} completed".format(log_pref))
    return 0