#!/usr/bin/env python
# -*- coding: utf-8 -*-

# kpov_random_helpers should be imported by add_assignment.py

instructions = {
    'si':u"""
Ustvari tri navidezne računalnike. Za prvega
uporabi sliko diska simpleArbiterDhcp, za drugega sliko diska
maliNetworkManager, za tretjega sliko diska maliBrezNetworkManager.
Računalnike imenujmo enako kot slike diska.
Na maliBrezNetworkManager izklopi networkmanager. Na 
Izklopi NetworkManager. Na obeh ročno nastavi IP naslova ter naslova
DNS strežnikov. Naslove dobiš na simpleArbiterDhcp.
"""
}

computers = {
    'maliNetworkManager': {
        'disks': [
            {   'name': 'maliNetworkManager',
            },
            #{   'name': 'CDROM',
            #    'options':{'readonly': True},
            #    'parts': [],# no parts, no mounting.
            #}
        ],
        'network_interfaces': [{'network': 'net1'}],
        'flavor': 'm1.tiny',
        'config_drive': False

    },
    'maliBrezNetworkManager': {
        'disks': [
            {   'name': 'maliBrezNetworkManager',
            },
            #{   'name': 'CDROM',
            #    'options':{'readonly': True},
            #    'parts': [],# no parts, no mounting.
            #}
        ],
        'network_interfaces': [{'network': 'net1'}],
        'flavor': 'm1.tiny',
        'config_drive': False

    },
    'SimpleArbiter': {
        'disks': [
            {   'name': 'simpleArbiterDhcp',
                # attempt automount
            },
            #{   'name': 'CDROM',
            #    'options': {'readonly': True},
            #    'parts': [{'dev': 'b1', 'path': '/cdrom'}],
            #},
        ],
        'network_interfaces': [{'network': 'net1'}, {'network': 'test-net'}],
        'flavor': 'm1.tiny',
        'config_drive': False
    }
}

networks = { 'net1': {'public': False}, 'test-net': {'public': True} }

params_meta = {
    'IP_NM': {'descriptions': {'si': 'Naslov maliNetworkManager'}, 'w': False, 'public':True, 'type': 'IP', 'generated': True},
    'DNS_NM': {'descriptions': {'si': 'DNS za maliNetworkManager'}, 'w': False, 'public':True, 'type': 'IP', 'generated': True},
    'IP_static': {'descriptions': {'si': 'Naslov maliBrezNetworkManager'}, 'w': False, 'public': True, 'type': 'IP', 'generated': True},
    'DNS_static': {'descriptions': {'si': 'DNS za maliBrezNetworkManager'}, 'w': False, 'public': True, 'type': 'IP', 'generated': True},
}

def task(IP_NM, DNS_NM, IP_static, DNS_static):
    import pxssh
    import pexpect
    results = dict()
    peer_user = 'student'
    peer_passwd = 'vaje'
    sA = pxssh.pxssh()
    sB = pxssh.pxssh()
    sA.login(IP_NM, peer_user, peer_passwd)
    sB.login(IP_static, peer_user, peer_passwd)
    # sA
    # make sure NM is not handling eth0
    results['NM_nmcli'] = sA.run('nmcli d')
    results['NM_nslookup'] = sA.run('nslookup www.arnes.si')
    # sB
    # check whether NM is handling eth0
    results['static_nmcli'] = sB.run('nmcli d')
    results['static_nslookup'] = sB.run('nslookup www.arnes.si')
    sA.logout()
    sB.logout()
    return results
    
def gen_params(user_id, params_meta):
    params = dict()
    r = random.Random(user_id)
    # IP_NM, DNS_NM, IP_static, DNS_static)
    dns_servers = ['193.2.1.66', '193.2.1.72', '8.8.8.8', '8.8.4.4', '208.67.222.222', '208.67.220.220']
    net = kpov_random_helpers.IPv4_subnet_gen(r, '172.23.128.0/18', 24)
    params['DNS_NM'] = r.choice(dns_servers)
    params['IP_NM'], params['IP_static'] = kpov_random_helpers.IPv4_addr_gen(r, net, 2)
    params['DNS_static'] = r.choice(dns_servers)
    return params

def task_check(results, params):
    import re
    score = -9
    if results['NM_nslookup'].find('Server:\t\t{0}\r'.format(params['DNS_NM'])) > -1:
        score += 3
    if results['static_nslookup'].find('Server:\t\t{0}\r'.format(params['DNS_static'])) > -1:
        score += 3
    if re.search(r'eth0 +802-.*connected', results['NM_nmcli']):
        score += 2
    if not re.search(r'eth0 +802-.*connected', results['static_nmcli']):
        score += 2
    return score

def prepare_disks(templates, params):
#    d = templates['simpleArbiterDhcp']
    pass