# kpov_util should be imported by add_assignment.py

instructions = {
    'si':"""
Postavi dva navidezna računalnika - SimpleArbiter z diska simpleArbiterDhcp ter
RdateServer. Na RdateServer postavi strežnik, ki bo poslušal na vratih VRATA_X.
Vsakič, ko se na vrata poveže klient, naj strežnik pošlje število sekund od DATUM_X.
Število naj bo kodirano kot 64-bitno predznačeno število s tankim koncem.

VRATA_X in DATUM_X preberi na SimpleArbiter.
"""
}

computers = {
    'maliNetworkManager': {
        'disks': [
            {   'name': 'maliNetworkManager',
            },
        ],
        'network_interfaces': [{'network': 'net1'}],
        'flavor': 'm1.tiny',
        'config_drive': False

    },
    'maliBrezNetworkManager': {
        'disks': [
            {   'name': 'maliBrezNetworkManager',
            },
        ],
        'network_interfaces': [{'network': 'net1'}],
        'flavor': 'm1.tiny',
        'config_drive': False

    },
    'SimpleArbiter': {
        'disks': [
            {   'name': 'simpleArbiterDhcp',
            },
        ],
        '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):
    from pexpect 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_util.IPv4_subnet_gen(r, '172.23.128.0/18', 24)
    params['DNS_NM'] = r.choice(dns_servers)
    params['IP_NM'], params['IP_static'] = kpov_util.IPv4_addr_gen(r, net, 2)
    params['DNS_static'] = r.choice(dns_servers)
    return params

def task_check(results, params):
    import re
    score = -9
    hints = []
    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
    score = 0
    return score, hints

def prepare_disks(templates, task_params, global_params):
    write_default_config(templates['simpleArbiterDhcp'], global_params)