from sys import argv
  import csv
  import getpass
  import netmiko
  from netmiko import ConnectHandler
  
  # Creditials
  username = input('Username: ')
  password = getpass.getpass('Password: ')
  ikepsk = input ('IKE Pre-shared-key: ')
  
  # Define Nodes
  script, csv_file = argv
  reader = csv.DictReader(open(csv_file, 'rt'))
  
  # Define all Hubs
  all_hubs = []
  for line in reader:
      all_hubs.append(line)
  
  
  #Configure vrf
  for devices in all_hubs:
      devices['username'] = username
      devices['password'] = password
      net_connect = ConnectHandler(**devices)
      config_commands = ['ip vrf  WAN1']
      output = net_connect.send_config_set(config_commands)
      print(output)
  
  #Configure IKEv1 Crypto
  for devices in all_hubs:
      devices['username'] = username
      devices['password'] = password
      net_connect = ConnectHandler(**devices)
      config_commands = ['crypto keyring DMVPN vrf WAN1',
      'pre-shared-key address 0.0.0.0 key %s' %ikepsk,
      'crypto isakmp policy 10',
      'authentication pre-share',
      'encryption aes 256',
      'hash sha256',
      'lifetime 28800',
      'crypto isakmp profile DMVPN_isakmp',
      'match identity address 0.0.0.0',
      'keyring DMVPN',
      'vrf WAN1',
      'crypto ipsec transform-set ESP-AES256-SHA2 esp-aes 256 esp-sha256-hmac',
      'crypto ipsec profile DMVPN_ipsec',
      'set transform-set ESP-AES256-SHA2',
      'set pfs group14']
      output = net_connect.send_config_set(config_commands)
      print(output)
  
  # Configure Loopbacks
  c = 1
  for devices in all_hubs:
      devices['username'] = username
      devices['password'] = password
      net_connect = ConnectHandler(**devices)
      config_commands = ['interface loopback0',
      'ip address 10.99.99.' + str(c)+ ' 255.255.255.255']
      output = net_connect.send_config_set(config_commands)
      print(output)
      c = c + 1
  
  # Configure Hub Tunnels - Hub1 .1 Hub2 .2
  h = 1
  for devices in all_hubs:
      devices['username'] = username
      devices['password'] = password
      net_connect = ConnectHandler(**devices)
      config_commands = ['interface tunnel100',
      'ip address 10.255.254.' + str(h) + ' 255.255.255.0',
      'tunnel source gig0/0',
      'tunnel mode gre multipoint',
      'ip nhrp map multicast dynamic',
      'ip nhrp network-id 47884',
      'tunnel vrf WAN1',
      'tunnel protection ipsec profile DMVPN_ipsec']
      output = net_connect.send_config_set(config_commands)
      print(output)
      h = h + 1
  
  # EIGRP Configurations
  for devices in all_hubs:
      devices['username'] = username
      devices['password'] = password
      net_connect = ConnectHandler(**devices)
      config_commands = ['router eigrp DMVPN',
      'address-family ipv4 unicast autonomous-system 1000',
      'network 10.0.0.0',
      'af-interface Tunnel100',
      'no next-hop-self',
      'no split-horizon']
      output = net_connect.send_config_set(config_commands)
      print(output)
  print ('DMVPN Hubs configured')