#!python
# -*- mode: python; Encoding: utf-8; coding: utf-8 -*-
# Last updated: <2019/09/16 09:35:47 +0900>
"""
display time and ping send.

Windows10 x64 + Python 2.7.16 32bit
"""

import subprocess
import curses
import os
import time
from datetime import datetime
import sys
import argparse

def is_connectable(host):
    """Ping."""
    copt = "-c"
    tmout = "3"
    if os.name == "nt":
        # Windows NT
        copt = "-n"
        tmout = "3000"
    ping = subprocess.Popen(
        ["ping", "-w", tmout, copt, "1", host],
        stdin=subprocess.PIPE,
        stdout=subprocess.PIPE
        )
    ping.communicate()
    return ping.returncode == 0


def get_hms(t):
    """Get HH:MM:SS."""
    h = int(t / 3600)
    m = int((t / 60) % 60)
    s = int(t % 60)
    return h, m, s


def win_main(win):
    """Main."""
    curses.curs_set(0)
    win.nodelay(True)
    key = ""
    win.clear()
    tm = time.time()
    
    while True:
        n = time.time()
        t = "%s" % datetime.fromtimestamp(n)
        win.addstr(0, 0, starttimestr)

        d = n - tm
        if d >= 1.0:
            win.addstr(3, 0, "ping")
            result = is_connectable(host)
            if result is not True:
                win.addstr(1, 0, "%s - %s is dead." % (t, host))
                break
            else:
                win.addstr(1, 0, "%s - %s is alive." % (t, host))
                
            h, m, s = get_hms(n - starttime)
            win.addstr(2, 0, "%d:%02d:%02d" % (h, m, s))
            tm = time.time()
        elif d >= 0.4:
            win.move(3, 0)
            win.clrtoeol()
        
        try:
            key = win.getkey()
            if key == os.linesep or key == "q" or ord(key) == 27:
                break
        except Exception as e:
            # No input
            pass

        time.sleep(0.2)

parser = argparse.ArgumentParser(description="Send ping.")
parser.add_argument("hostname", metavar="HOSTNAME", help="host name")
args = parser.parse_args()

host = args.hostname

starttime = time.time()
starttimestr = "%s - start" % datetime.fromtimestamp(starttime)

curses.wrapper(win_main)

print(starttimestr)

endtime = time.time()
t = "%s" % datetime.fromtimestamp(endtime)
print("%s - %s is dead." % (t, host))

h, m, s = get_hms(endtime - starttime)
print("%d:%02d:%02d" % (h, m, s))

sys.exit()