#!/usr/bin/env python3


import os
import sys
import time
import signal
import subprocess
from typing import Tuple

# check for the venv
from lib import sanity_check
sanity_check.check_venv(__file__)
from typing import IO


TOOLS_DIR = os.path.dirname(os.path.abspath(__file__))


def start_server(logfile_name: str) -> Tuple[bool, str]:
    failure = True
    key = "Quit the server with CTRL-C."
    datalog = []
    with open(logfile_name, 'rb', buffering=0) as logfile:
        for i in range(200):
            time.sleep(0.5)
            print("{}. Polling run-dev...".format(i))
            new_data = logfile.read().decode()
            if new_data:
                datalog.append(new_data)

            if key in ''.join(datalog):
                failure = False
                break

    return failure, ''.join(datalog)


def test_nagios(nagios_logfile):
    # type: (IO[str]) -> bool
    ZULIP_DIR = os.path.join(TOOLS_DIR, '..')
    API_DIR = os.path.join(ZULIP_DIR, 'api')
    os.chdir(API_DIR)
    subprocess.call(['./setup.py', 'install'])
    PUPPET_DIR = os.path.join(ZULIP_DIR, 'puppet')
    os.chdir(ZULIP_DIR)
    my_env = os.environ.copy()
    my_env['PYTHONPATH'] = ZULIP_DIR
    args = [
        os.path.join(PUPPET_DIR,
                     'zulip/files/nagios_plugins/zulip_app_frontend/check_send_receive_time'),
        '--nagios',
        '--site=http://127.0.0.1:9991',
    ]
    result = subprocess.check_output(args, env=my_env, universal_newlines=True,
                                     stderr=nagios_logfile)

    if result.startswith("OK:"):
        return True

    print(result)
    return False


if __name__ == '__main__':
    print("Testing development server start!")

    logfile_name = '/tmp/run-dev-output'
    logfile = open(logfile_name, 'wb', buffering=0)
    # nagios_logfile = open('/tmp/test-nagios-output', 'w+')

    args = ["{}/run-dev.py".format(TOOLS_DIR)]
    STDOUT = subprocess.STDOUT
    run_dev = subprocess.Popen(args, stdout=logfile, stderr=STDOUT)

    try:
        failure, log = start_server(logfile_name)
        # We have moved API to a separate repo. `test_nagios` and
        # `check_send_receive_time` need to be updated.
        # failure = failure or not test_nagios(nagios_logfile)
    finally:
        logfile.close()
        # nagios_log = close_and_get_content(nagios_logfile)

    run_dev.send_signal(signal.SIGINT)
    run_dev.wait()

    if not failure and 'Traceback' in log:  # + ' ' + nagios_log:
        failure = True

    if failure:
        print("Development server is not working properly:")
        print(log)
        # print("check_send_receive_time output:")
        # print(nagios_log)
        sys.exit(1)
    else:
        print("Development server is working properly.")
        sys.exit(0)