#!/usr/bin/env python
# -------------------------------------------------------------------------------
#    FILE: ClientInterface.py
# PURPOSE:
#
#  AUTHOR: Jason G Yates
#    DATE: 17-Dec-2016
# MODIFICATIONS:
# -------------------------------------------------------------------------------
import getopt
import signal
import sys

try:
    from genmonlib.myclient import ClientInterface
    from genmonlib.mylog import SetupLogger
    from genmonlib.program_defaults import ProgramDefaults
except Exception as e1:
    print(
        "\n\nThis program requires the modules located in the genmonlib directory in the github repository.\n"
    )
    print(
        "Please see the project documentation at https://github.com/jgyates/genmon.\n"
    )
    print("Error: " + str(e1))
    sys.exit(2)

# ----------  Signal Handler ----------------------------------------------------
def signal_handler(signal, frame):

    if MyClientInterface != None:
        MyClientInterface.Close()
    sys.exit(0)


# ------------------- Command-line interface for monitor ------------------------
if __name__ == "__main__":  # usage program.py [server_address] [port]
    address = ProgramDefaults.LocalHost
    port = ProgramDefaults.ServerPort

    # log errors in this module to a file
    console = SetupLogger("client_console", log_file="", stream=True)
    HelpStr = "\npython ClientInterface.py -a <IP Address or none for localhost> -p <port or none for default port>\n"
    try:
        opts, args = getopt.getopt(sys.argv[1:], "hp:a:", ["help", "port=", "address="])
    except getopt.GetoptError:
        console.error("Invalid command line argument.")
        sys.exit(2)

    MyClientInterface = None
    try:
        for opt, arg in opts:
            if opt == "-h":
                console.error(HelpStr)
                sys.exit()
            elif opt in ("-a", "--address"):
                address = arg
            elif opt in ("-p", "--port"):
                port = int(arg)
    except Exception as e1:
        console.error("Error parsing: " + str(e1))
        sys.exit(2)

    log = SetupLogger("client", "client.log")

    # Set the signal handler
    signal.signal(signal.SIGINT, signal_handler)
    signal.signal(signal.SIGTERM, signal_handler)

    MyClientInterface = ClientInterface(host=address, port=port, log=log)

    try:

        while True:
            if sys.version_info[0] < 3:  # Python 2.x
                line = raw_input(">")
            else:  # python 3.x
                line = input(">")

            if line.lower() == "exit":
                break
            if len(line):
                data = MyClientInterface.ProcessMonitorCommand(line)
                print(data)

    except Exception as e1:
        console.error("Error: " + str(e1))
    MyClientInterface.Close()