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

# kpov_random_helpers should be imported by add_assignment.py

instructions = {
    'si':u"""
Postavi dva navidezna računalnika - SimpleArbiter z diska SimpleArbiterVPN ter
VPNClient, ki jima nastavite pravilne mrežne nastavitve (medsebojna povezava in povezava na splet).
Na oba računalnika namestite OpenVPN in program za nadzor nad virtualnimi napravami (s katerim kreirate napravo tap).
Strežnik SimpleArbiterVPN naj generira skupno skrivnost (*.key), ki jo na VPNCLient uporabite skupaj z konfiguracijsko
datoteko za OpenVPN povezavo. Nato poskrbite, da bo VPNClient na navideznem omrežju prek NFS omogočil
dostop do imenika /home/test/IME_IMENIKA, pri čemer IME_IMENIKA preberite na SimpleArbiter.
V ta imenik skopirajte datoteke, ki so prek SMB dostopne na SimpleArbiter.
"""
}

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):
    
    alpha = "abcdefghijklmnoprstuvzxyqw"
    alphaupp = "ABCDEFGHIJKLMNOPRSTUVZQWXY"
    alpha2 = ['$','?','!',"%","&"]
    alpha3 = ['IT','DH','JF','PO','LZ']
    
    
    temp = datetime.datetime.now().strftime("%Y%m%d%H%M%S")
    hash = ""
    
    for x in temp:
    	for i in x:
    		if int(i)<5:
    			hash+=random.choice(alpha)+alpha2[int(i)]
    		else:
    			hash+=random.choice(alphaupp)+alpha3[int(i)-5]
        hash+=":"+temp
    
    
    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)
    
    params[user_id] = hash
    
    
    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
    
    score = 0
    
    return score


def prepare_disks(templates, params):
    
    d = templates['simpleArbiterDhcp']
    
    guestmount -a d -m /dev/VG/LV -m /dev/sda1:/boot --ro /mnt 
    
    pass