#
# Copyright 2018 the original author or authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

"""
Test Case Utils module
"""

from __future__ import absolute_import

import time
import subprocess
import pexpect
import sys


def config_dirs(self, log_dir, root_dir=None, voltha_dir=None):
    self.dirs["log"] = log_dir
    self.dirs["root"] = root_dir
    self.dirs["voltha"] = voltha_dir


def get_dir(self, directory):
    return self.dirs.get(directory)


def remove_leading_line(log_dir, log_file):
    with open(log_dir + "/" + log_file, "r+") as FILE:
        lines = FILE.readlines()
        FILE.seek(0)
        lines = lines[1:]
        for line in lines:
            FILE.write(line)
        FILE.truncate()
        FILE.close()


def send_command_to_voltha_cli(
    log_dir,
    log_file1,
    cmd1,
    log_file2=None,
    cmd2=None,
    log_file3=None,
    cmd3=None,
    host="localhost",
):
    output = open(log_dir + "/" + log_file1, "wb")
    child = pexpect.spawn(
        "ssh -p 30110 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no voltha@%s"
        % host
    )
    child.expect(r"[pP]assword:")
    child.sendline("admin")
    child.expect(r"\((\x1b\[\d*;?\d+m){1,2}voltha(\x1b\[\d*;?\d+m){1,2}\)")
    time.sleep(10)
    child.sendline(cmd1)
    i = child.expect(
        [
            r"\((\x1b\[\d*;?\d+m){1,2}voltha(\x1b\[\d*;?\d+m){1,2}\)",
            r"\((\x1b\[\d*;?\d+m){1,2}.*device [0-9a-f]{16}(\x1b\[\d*;?\d+m){1,2}\)",
        ]
    )
    if i == 0:
        output.write(child.before)
        output.close()
        remove_leading_line(log_dir, log_file1)
    elif i == 1:
        if log_file2 is not None and cmd2 is not None:
            output = open(log_dir + "/" + log_file2, "wb")
            child.sendline(cmd2)
            child.expect(
                r"\((\x1b\[\d*;?\d+m){1,2}.*device [0-9a-f]{16}(\x1b\[\d*;?\d+m){1,2}\)"
            )
            output.write(child.before)
            output.close()
            remove_leading_line(log_dir, log_file2)
        if log_file3 is not None and cmd3 is not None:
            output = open(log_dir + "/" + log_file3, "wb")
            child.sendline(cmd3)
            child.expect(
                r"\((\x1b\[\d*;?\d+m){1,2}.*device [0-9a-f]{16}(\x1b\[\d*;?\d+m){1,2}\)"
            )
            output.write(child.before)
            output.close()
            remove_leading_line(log_dir, log_file3)
    child.close()


def send_command_to_onos_cli(log_dir, log_file, cmd, host="localhost"):
    output = open(log_dir + "/" + log_file, "wb")
    child = pexpect.spawn(
        "ssh -p 30115 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no karaf@%s"
        % host
    )
    child.expect(r"[pP]assword:")
    child.sendline("karaf")
    child.expect(r"(\x1b\[\d*;?\d+m){1,2}(onos>|karaf@root >) (\x1b\[\d*;?\d+m){1,2}")
    child.sendline(cmd)
    child.expect(r"(\x1b\[\d*;?\d+m){1,2}(onos>|karaf@root >) (\x1b\[\d*;?\d+m){1,2}")

    output.write(child.before)

    output.close()
    child.close()


def get_fields_from_grep_command(self, search_word, log_file):
    grepCommand = "grep %s %s/%s" % (search_word, get_dir(self, "log"), log_file)
    statusLines = subprocess.getstatusoutput(grepCommand)[1]
    return statusLines


def parse_fields(status_line, delimiter):
    statusList = status_line.split(delimiter)
    return statusList


def print_log_file(self, log_file):
    with open(get_dir(self, "log") + "/" + log_file, "r+") as FILE:
        lines = FILE.readlines()
        print
        for line in lines:
            sys.stdout.write(line)


def extract_pod_ip_addr(pod_name):
    proc1 = subprocess.Popen(
        ["/usr/bin/kubectl", "get", "svc", "--all-namespaces"],
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
    )
    proc2 = subprocess.Popen(
        ["grep", "-e", pod_name],
        stdin=proc1.stdout,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
    )
    proc3 = subprocess.Popen(
        ["awk", "{print $4}"],
        stdin=proc2.stdout,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
    )

    proc1.stdout.close()
    proc2.stdout.close()
    out, err = proc3.communicate()
    return out


def extract_radius_ip_addr(pod_name):
    proc1 = subprocess.Popen(
        ["/usr/bin/kubectl", "describe", "pod", "-n", "voltha", pod_name],
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
    )
    proc2 = subprocess.Popen(
        ["grep", "^IP:"],
        stdin=proc1.stdout,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
    )
    proc3 = subprocess.Popen(
        ["awk", "{print $2}"],
        stdin=proc2.stdout,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
    )

    proc1.stdout.close()
    proc2.stdout.close()
    out, err = proc3.communicate()
    return out


def extract_pod_name(short_pod_name):
    proc1 = subprocess.Popen(
        ["/usr/bin/kubectl", "get", "pods", "--all-namespaces"],
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
    )
    proc2 = subprocess.Popen(
        ["grep", "-e", short_pod_name],
        stdin=proc1.stdout,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
    )
    proc3 = subprocess.Popen(
        ["awk", "{print $2}"],
        stdin=proc2.stdout,
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
    )

    proc1.stdout.close()
    proc2.stdout.close()
    out, err = proc3.communicate()
    return out


def modify_radius_ip_in_json_using_sed(self, new_ip_addr):
    sedCommand = (
        "sed -i '/radiusIp/c\\      \"radiusIp\":\"'%s'\",' %s/tests/atests/build/aaa_json"
        % (new_ip_addr, get_dir(self, "voltha"))
    )
    status = subprocess.getstatusoutput(sedCommand)[0]
    return status


def discover_rg_pod_name():
    return extract_pod_name("rg0").strip()


def retrieve_authorized_users_device_id_and_port_number(status_line):
    fields = parse_fields(status_line, ",")
    deviceField = fields[2].strip()
    deviceStr, equal, deviceId = deviceField.partition("=")
    device_Id = deviceId
    portField = fields[4].strip()
    portNumStr, equal, portNum = portField.partition("=")
    portNumber = portNum
    return device_Id, portNumber


def add_subscriber_access(self, device_id, port_number):
    send_command_to_onos_cli(
        get_dir(self, "log"),
        "voltha_add_subscriber_access.log",
        "volt-add-subscriber-access %s %s" % (device_id, port_number),
    )