#. -*- coding: utf-8 -
# required proxmox permissions: PVEAdmin
#
# afx 2015-2017

# site
from proxmoxer import ProxmoxAPI
import base64
import json
import time
import socket
import random
from unidecode import unidecode

#local
import grid
import utils
import ioconfig
import novnc

def auth(slave_name):
    """ return control object from config slave names """
    adminuser = ioconfig.parser.get('general', 'adminuser')
    slaveip = ioconfig.parser.get(str(slave_name), 'ipv4')
    slavepass = ioconfig.parser.get(str(slave_name), 'password')
    slavetype = ioconfig.parser.get(str(slave_name), 'type')
    
    if slavetype == 'proxmox':
        proxobject = ProxmoxAPI(slaveip, user=adminuser, password=slavepass, verify_ssl=False)
        return proxobject

def create(json):
    """ create an unit. returns JSON with data """
    try:
        region_id = ioconfig.parser.get(str(json['region']), 'regionid')
        region_fullname = ioconfig.parser.get(str(json['region']), 'fullname')
    except:
        ioconfig.logger.error('grid> region not found')
        return None
    vm_name_utf8 = json['hostname']
    vm_name = unidecode(vm_name_utf8)
    try:
        vm_pass = json['rootpass']
    except:
        vm_pass = '!%%^)@&&(K3B'
    #slave_name = str(grid.query_happiness(region_id, weight)) #TODO: provide weight parameters here and calculate route
    #slave_name = 'lexx'
    slave_name = 'warrior'

    unit_id = int(time.time() * 10000 * 10000)
    phy_id = grid.phyidgen(json['type'])
    proxobject = auth(slave_name)
    real_slave_name = proxobject.cluster.status.get()[0]['name']
    description = vm_name + ' (' + str(unit_id) + '-' + str(phy_id) + ')\n' + 'owned by ' + json['clientemail'] + ' (' + json['clientid'] + ')\n'
    
    if json['type'] == 'deploy':
        #create partition
        image_name = 'vm-' + str(phy_id) + '-disk-1'
        try:
            local_storage = proxobject.nodes(real_slave_name).storage('lvm')
            storage_create_result = local_storage.content.post(vmid=phy_id, filename=image_name, size=json['hdd'] + 'G')
            ioconfig.logger.info('%s[%s]> allocated %s as %s' % (json['clientemail'], slave_name, json['hdd'], image_name))
        except:
            ioconfig.logger.info('%s[%s]> unable to allocate %s' % (json['clientemail'], slave_name, image_name))
            response = { 'status':'FAIL' }
            return response

        create_result = proxobject.nodes(real_slave_name).qemu.post(vmid=int(phy_id),
                                                              name=vm_name,
                                                              onboot=1,
                                                              sockets=1,
                                                              cores=json['cpu'],
                                                              memory=json['mem'],
                                                              scsihw='virtio-scsi-pci',
                                                              scsi0='file=lvm:' + image_name + ',discard=on',
                                                              description=description)
        data = { 'unit_id': int(unit_id),
                 'type': 'kvm',
                 'clientid': json['clientid'],
                 'clientemail': json['clientemail'],
                 'hostname': vm_name,
                 'region': region_fullname,
                 'slave': slave_name,
                 'phyid': phy_id
               }
        response = { 'status': 'deploy_created', 'unit_id': unit_id, 'hostname': vm_name, 'password': vm_pass, 'slave': real_slave_name }

    if json['type'] == 'router':
        create_result = proxobject.nodes(real_slave_name).lxc.post(vmid=int(phy_id),
                                                              hostname=vm_name,
                                                              onboot=1,
                                                              unprivileged=1,
                                                              password=vm_pass,
                                                              cores=json['cpu'],
                                                              memory=json['mem'],
                                                              net0='name=eth0,bridge=' + json['bridge_id'] + ',gw=' + json['region_gw'] + ',hwaddr=' + json['macaddr'] + ',ip=' + json['ipv4addr'] + '/' + json['region_netmask'],
                                                              ostemplate='backup:vztmpl/debian-9.0-standard_9.0-2_amd64.tar.gz',
                                                              rootfs='volume=lvm:' + image_name,
                                                              swap=32,
                                                              description=description)
        data = { 'unit_id': int(unit_id),
                 'type': 'lxc',
                 'clientid': json['clientid'],
                 'clientemail': json['clientemail'],
                 'hostname': vm_name,
                 'region': region_fullname,
                 'slave': slave_name,
                 'phyid': phy_id
               }
        response = { 'status': 'router_created', 'unit_id': unit_id, 'hostname': vm_name, 'password': vm_pass, 'slave': real_slave_name }


    if json['type'] == 'bridge':
        data = { 'unit_id': int(unit_id),
                 'type': 'vmbr',
                 'clientid': json['clientid'],
                 'clientemail': json['clientemail'],
                 'region': region_fullname,
                 'slave': slave_name,
                 'phyid': phy_id
               }
        #TODO: CREATE BRIDGE
        response = { 'status': 'bridge_created', 'unit_id': unit_id, 'hostname': vm_name, 'password': vm_pass, 'slave': real_slave_name }

    time.sleep(7) #wait few seconds for the slave to prepare the machine for initial run

    grid.create(data)
    return response

def remove(json):
    """ terminate an unit """
    unit_type = json['type']
    slave_name, phy_id, vm_host, vm_owner = grid.query(json)
    proxobject = auth(slave_name)
    ioconfig.logger.info('%s[%s]> deleting %s %s (%s)' % (vm_owner, slave_name, unit_type, phy_id, vm_host))
    if unit_type == 'kvm':
        result = proxobject.nodes(slave_name).qemu(phy_id).delete()
        grid.delete(json)
    if unit_type == 'lxc':
        result = proxobject.nodes(slave_name).lxc(phy_id).delete()
        grid.delete(json)
    response = { 'status':'{}_deleted'.format(unit_type) }
    return response

def query(json):
    """ return the db info of an unit """
    return grid.query(json)

def status(json):
    """ returns the status of an unit """
    unit_type = json['type']
    slave_name, phy_id, vm_host, vm_owner = grid.query(json)
    proxobject = auth(slave_name)
    #slave_name = proxobject.cluster.status.get()[0]['name']
    ioconfig.logger.info('%s[%s]> status of %s %s (%s)' % (vm_owner, slave_name, unit_type, phy_id, vm_host))
    if unit_type == 'kvm':
        result = proxobject.nodes(slave_name).qemu(phy_id).status.current.get()
    if unit_type == 'lxc':
        result = proxobject.nodes(slave_name).lxc(phy_id).status.current.get()
    return result

def start(json):
    """ starts a machine """
    unit_type = json['type']
    slave_name, phy_id, vm_host, vm_owner = grid.query(json)
    proxobject = auth(slave_name)
    #slave_name = proxobject.cluster.status.get()[0]['name']
    ioconfig.logger.info('%s[%s]> starting %s %s (%s)' % (vm_owner, slave_name, unit_type, phy_id, vm_host))
    if unit_type == 'kvm':
        result = proxobject.nodes(slave_name).qemu(phy_id).status.start.post()
    if unit_type == 'lxc':
        result = proxobject.nodes(slave_name).lxc(phy_id).status.start.post()
    #TODO: SET START AT BOOT FLAG
    response = { 'status':'START' }
    return response

def shutdown(json):
    """ acpi shutdown the machine.. """
    unit_type = json['type']
    slave_name, phy_id, vm_host, vm_owner = grid.query(json)
    proxobject = auth(slave_name)
    #slave_name = proxobject.cluster.status.get()[0]['name']
    ioconfig.logger.info('%s[%s]> acpi shutdown %s %s (%s)' % (vm_owner, slave_name, unit_type, phy_id, vm_host))

    if unit_type == 'kvm':
        result = proxobject.nodes(slave_name).qemu(phy_id).status.shutdown.post()
    if unit_type == 'lxc':
        result = proxobject.nodes(slave_name).lxc(phy_id).status.shutdown.post()
    #TODO: REMOVE START AT BOOT FLAG
    #ioconfig.logger.info('slave[{}]> {}'.format(slave_name, result))
    response = { 'status':'SHUTDOWN', 'vmid':phy_id }
    return response

def stop(json):
    """ poweroff the machine.. """
    unit_type = json['type']
    slave_name, phy_id, vm_host, vm_owner = grid.query(json)
    proxobject = auth(slave_name)
    #slave_name = proxobject.cluster.status.get()[0]['name']
    ioconfig.logger.info('%s[%s]> power off %s %s (%s)' % (vm_owner, slave_name, unit_type, phy_id, vm_host))

    if unit_type == 'kvm':
        result = proxobject.nodes(slave_name).qemu(phy_id).status.stop.post()
    if unit_type == 'lxc':
        result = proxobject.nodes(slave_name).lxc(phy_id).status.stop.post()
    #TODO: REMOVE START AT BOOT FLAG
    #ioconfig.logger.info('slave[{}]> {}'.format(slave_name, result))
    response = { 'status':'STOP', 'vmid':phy_id }
    return response

def suspend(json):
    """ suspend machine """
    unit_type = json['type']
    slave_name, phy_id, vm_host, vm_owner = grid.query(json)
    proxobject = auth(slave_name)
    #slave_name = proxobject.cluster.status.get()[0]['name']
    ioconfig.logger.info('%s[%s]> suspending %s %s (%s)' % (vm_owner, slave_name, unit_type, phy_id, vm_host))

    if unit_type == 'kvm':
        result = proxobject.nodes(slave_name).qemu(phy_id).status.suspend.post()
    if unit_type == 'lxc':
        result = proxobject.nodes(slave_name).lxc(phy_id).status.suspend.post()
    response = { 'status':'SUSPEND', 'vmid':phy_id }
    return response

def resume(json):
    """ resume machine """
    unit_type = json['type']
    slave_name, phy_id, vm_host, vm_owner = grid.query(json)
    proxobject = auth(slave_name)
    #slave_name = proxobject.cluster.status.get()[0]['name']
    ioconfig.logger.info('%s[%s]> resuming %s %s (%s)' % (vm_owner, slave_name, unit_type, phy_id, vm_host))

    if unit_type == 'kvm':
        result = proxobject.nodes(slave_name).qemu(phy_id).status.resume.post()
    if unit_type == 'lxc':
        result = proxobject.nodes(slave_name).lxc(phy_id).status.resume.post()
    response = { 'status':'RESUME', 'vmid':phy_id }
    return response

def vmrrd(json):
    """ retrieve rrd graphs (PNG) """
    unit_type = json['type']
    slave_name, phy_id, vm_host, vm_owner = grid.query(json)
    proxobject = auth(slave_name)
    proxobject.cluster.status.get()[0]['name']

    result = {}
    if unit_type == 'kvm':
        statusquery = proxobject.nodes(slave_name).qemu(phy_id).status.current.get()
        rcpu = proxobject.nodes(slave_name).qemu(phy_id).rrd.get(timeframe='day', cf='AVERAGE', ds='cpu')
        rmem = proxobject.nodes(slave_name).qemu(phy_id).rrd.get(timeframe='day', cf='AVERAGE', ds='mem,maxmem')
        rnet = proxobject.nodes(slave_name).qemu(phy_id).rrd.get(timeframe='day', cf='AVERAGE', ds='netin,netout')
        rhdd = proxobject.nodes(slave_name).qemu(phy_id).rrd.get(timeframe='day', cf='AVERAGE', ds='diskread,diskwrite')
        status = str(statusquery['qmpstatus'])

    if unit_type == 'lxc':
        status = proxobject.nodes(slave_name).lxc(phy_id).status.current.get()
        rcpu = proxobject.nodes(slave_name).lxc(phy_id).rrd.get(timeframe='day', cf='AVERAGE', ds='cpu')
        rmem = proxobject.nodes(slave_name).lxc(phy_id).rrd.get(timeframe='day', cf='AVERAGE', ds='mem,maxmem')
        rnet = proxobject.nodes(slave_name).lxc(phy_id).rrd.get(timeframe='day', cf='AVERAGE', ds='netin,netout')
        rhdd = proxobject.nodes(slave_name).lxc(phy_id).rrd.get(timeframe='day', cf='AVERAGE', ds='diskread,diskwrite')
        status = str(statusquery['qmpstatus']) #TODO: maybe change this?

    #ioconfig.logger.info('%s[%s]> rrd of %s %s (%s). status: %s' % (vm_owner, slave_name, unit_type, phy_id, vm_host, status))

    response = { 'status':status, 'cpu':rcpu, 'mem':rmem, 'net':rnet, 'hdd':rhdd }
    return response

def vmvnc(json):
    """ invoke vnc ticket """
    unit_type = json['type']
    slave_name, phy_id, vm_host, vm_owner = grid.query(json)
    proxobject = auth(slave_name)
    #slave_name = proxobject.cluster.status.get()[0]['name']
    ioconfig.logger.info('%s[%s]> invoking vnc ticket for %s %s (%s)' % (vm_owner, slave_name, unit_type, phy_id, vm_host))

    if unit_type == 'kvm':
        ticket = proxobject.nodes(slave_name).qemu(phy_id).vncproxy.post(websocket=1)
        #socket = proxobject.nodes(slave_name).qemu(phy_id).vncwebsocket.get(port=ticket['port'],
        #                                                                   vncticket=ticket['ticket'])
    if unit_type == 'lxc':
        ticket = proxobject.nodes(slave_name).lxc(phy_id).vncproxy.post()
        #socket = proxobject.nodes(slave_name).lxc(phy_id).vncwebsocket.get(port=ticket['port'],
        #                                                                  vncticket=ticket['ticket'])

    slaveip = ioconfig.parser.get(str(slave_name), 'ipv4')
    #slaveport = socket['port']
    slaveport = ticket['port']
    slave_id = 1 #TODO: fix this

    vnchost = ioconfig.parser.get('general', 'novnc_host')
    listenport = str(int(slaveport) + 1000 + (int(slave_id) * 100)) #TODO: max 100 parallel connections/slave.

    vnc_target = { 'target_host': slaveip, 
                   'target_port': slaveport,
                   'listen_host': vnchost, 
                   'listen_port': listenport
                 }
    vnc_options = { 'idle-timeout': 20, 
                    'verbose': True,
                    'cert': ioconfig.parser.get('general', 'ssl_cert'),
                    'key': ioconfig.parser.get('general', 'ssl_key'),
                    'ssl-only': True 
                  }

    novnc.spawn(vnc_target, vnc_options)
    
    external_url = ioconfig.parser.get('general', 'novnc_url')
    prefix = external_url + "?host=" + vnchost + "&port=" + listenport + "&view_only=false&encrypt=1&true_color=1&password="
    vnc_url = prefix + ticket['ticket']

    time.sleep(3) #wait few seconds for the parallel vncwebsocket
    ioconfig.logger.info('{}[{}]> vnc port {} ready'.format(vm_owner, slave_name, listenport))
    #response = { 'status':'VNC', 'fqdn':external_url, 'host':myip, 'port':listenport, 'encrypt':'0', 'true_color':'1', 'ticket':ticket['ticket'] }
    response = { 'status':'VNC', 'url':vnc_url }
    #print(vnc_url)
    return response

#DEPRECATED
def vmlist(proxobject):
    """ get unit list """
    #we keep a single node proxmoxes so node id = 0
    slave_name = proxobject.cluster.status.get()[0]['name']
    query_kvm = proxobject.nodes(slave_name).qemu.get()
    query_lxc = proxobject.nodes(slave_name).lxc.get()
    for kvm_dict in query_kvm:
        kvm_dict['vmtype'] = 'kvm'
    for lxc_dict in query_lxc:
        lxc_dict['vmtype'] = 'lxc'
    vmlist = query_kvm + query_lxc #merge machine list
    return vmlist

if __name__ == '__main__':
    #internal module tests
    time.sleep(1)
    #vmvnc(656758)