"""
lets assume,

1.
 we have file elements.json in same directory as script below

  structure of elements.json is :
   [{"vendor": "HUAWEI Technology Co.,Ltd", "DisplayName": "AAAAAAAAA", "IP": "1.1.1.1."},]

   element is NE40

2. we have jumpserver (ubuntu)

3. we have module paramiko & paramiko-expect installer ( pip install paramiko   && pip install paramiko-expect)

4. following credentials are filled properly:
"""

routerusername="solsddsdm"
routeruserpassword="casdadsa"
routerprompt = ".*>$"

jumpserverip="5.5.5.5"
jumpserverprompt="\$ $"
jumpserverusername="sasdasdas"
jumpserverpassword="Atasdasd5"


"""

 then we can call script python inter.py  -e AAAAAAAAA -f ".*test.*"

and as result we get interfaces, where description will match regexp  ".*test.*"


"""

import sys, getopt
import json
import  os
import re
import traceback
import paramiko
from paramiko_expect import SSHClientInteraction






def main(ele="KIR-IPR-9306-02",fil="1/0/0"):
    dir_path = os.path.dirname(os.path.realpath(__file__))
    with open(dir_path+os.sep+'elements.json') as json_data:
        d = json.load(json_data)
        for el in d:
            name=el['DisplayName']
            if re.match(ele,name)!=None:
                print("element {el}  filter {fe} {na}".format(el=el['IP'],na=el['DisplayName'],fe=fil))
                printInterfaces(el['IP'],fil)


def printInterfaces(ip,fil):
    ip = ip

    try:
        # Create a new SSH client object
        client = paramiko.SSHClient()

        # Set SSH key parameters to auto accept unknown hosts
        client.load_system_host_keys()
        client.set_missing_host_key_policy(paramiko.AutoAddPolicy())

        # Connect to the host
        client.connect(hostname=jumpserverip, username=jumpserverusername, password=jumpserverpassword)

        # Create a client interaction class which will interact with the host
        interact = SSHClientInteraction(client, timeout=20, display=False)
        interact.expect(jumpserverprompt, timeout=40)
        interact.send("telnet {ipp}".format(ipp=ip))
        interact.expect("Username:", timeout=30)
        interact.send(routerusername)
        interact.expect("Password:.*", timeout=40)
        interact.send(routeruserpassword)
        interact.expect(routerprompt, timeout=40)


        interact.send("screen-length 0 temporary")
        interact.expect(routerprompt, timeout=40)
        interact.send("dis int desc")
        interact.expect(routerprompt, timeout=30)
        output = interact.current_output_clean
        lines=output.split("\n")
        for ll in lines:

            rowItems=ll.split("  ")
            if rowItems[0]=='' :
                continue
            interfaceid=""
            interfacestatusphy=""
            interfacestatusadm = ""
            tmptt=[]
            for tt in rowItems:
                if tt !='':
                    tmptt.append(tt)

            if(len(tmptt)==3):
                tmptt.append("")

            if(len(tmptt)<4):
                continue
            desc= tmptt[3].lower()
            fil=fil.lower()
            #print(tmptt,desc,fil)
            if (re.match(fil,desc)!=None):
                print(tmptt)



    except Exception as es:
        traceback.print_exc()
    finally:
        try:
            client.close()
        except:
            traceback.print_exc()


if __name__ == '__main__':
    myopts, args = getopt.getopt(sys.argv[1:], "e:f:")
    element=""
    filter=""
    for o, a in myopts:
        if o == '-e':
            element = a
        elif o == '-f':
            filter = a
        else:
            print("Usage: %s -i input -o output" % sys.argv[0])

    #element="KIR-IPR-9306-02"
    #filter=".*kir.*"
    main(ele=element,fil=filter)