#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# 2020 Nico Schottelius (nico.schottelius at ungleich.ch)
#
# This file is part of uncloud.
#
# uncloud is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# uncloud is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with uncloud. If not, see <http://www.gnu.org/licenses/>.
#
#

import subprocess
import uuid
import os

from uncloud.hack.db import DB

class VM(object):
   def __init__(self, config):
      self.config = config
      self.db = DB(config)

      self.hackprefix="/home/nico/vcs/uncloud/uncloud/hack/hackcloud"
      self.qemu="/usr/bin/qemu-system-x86_64"

      self.vm = {}

      self.accel="kvm"

#      self.mac=$(./mac-gen.py)
      self.mac="42:00:00:00:00:42"
      self.owner="nico"
      self.bridge="br100"

      self.ifup = os.path.join(self.hackprefix, "ifup.sh")
      self.ifdown = os.path.join(self.hackprefix, "ifdown.sh")

      self.uuid = uuid.uuid4()
      self.vm['uuid'] = str(self.uuid)
      self.vm['memory']=1024
      self.vm['cores']=2
      self.vm['os_image'] = os.path.join(self.hackprefix, "alpine-virt-3.11.2-x86_64.iso")

      self.vm['commandline' ] = [ "sudo",
         "{}".format(self.qemu),
           "-name", "uncloud-{}".format(self.vm['uuid']),
           "-machine", "pc,accel={}".format(self.accel),
           "-m", "{}".format(self.vm['memory']),
           "-smp", "{}".format(self.vm['cores']),
           "-uuid", "{}".format(self.vm['uuid']),
           "-drive", "file={},media=cdrom".format(self.vm['os_image']),
           "-netdev", "tap,id=netmain,script={},downscript={}".format(self.ifup, self.ifdown),
           "-device", "virtio-net-pci,netdev=netmain,id=net0,mac={}".format(self.mac)
      ]

   def create(self):
      self.db.set("vm/{}".format(str(self.vm['uuid'])),
                  self.vm, store_as_json=True)

      print(" ".join(self.vm['commandline']))
      subprocess.run(self.vm['commandline'])