import json

from enum import IntEnum
from xmlrpc.client import ServerProxy as RPCClient

from xmltodict import parse

from config import config, etcd_client


# Constants
ALL_VM_STATES = -1
START_ID = -1  # First id whatever it is
END_ID = -1  # Last id whatever it is


def put_under_list(obj):
    if not isinstance(obj, list):
        return [obj]
    return obj


class VMState(IntEnum):
    INIT = 0
    PENDING = 1
    HOLD = 2
    ACTIVE = 3
    STOPPED = 4
    SUSPENDED = 5
    DONE = 6
    FAILED = 7
    POWEROFF = 8
    UNDEPLOYED = 9
    CLONING = 10
    CLONING_FAILURE = 11


class VmFilterFlag(IntEnum):
    UIDUserResources = 0  # UID User’s Resources
    UserAndItsGroupsResources = -1  # Resources belonging to the user and any of his groups
    AllResources = -2  # All resources
    UserResources = -3  # Resources belonging to the user
    UserPrimaryGroupResources = -4  # Resources belonging to the user’s primary group


class VM:
    def __init__(self, vm: dict):
        self.id = vm.get('ID', None)
        self.owner = {
            'id': vm.get('UID', None),
            'name': vm.get('UNAME', None),
            'gname': vm.get('GNAME', None)
        }
        self.name = vm.get('NAME', None)
        self.status = vm.get('STATE', None)
        if self.status:
            self.status = VMState(int(self.status)).name.lower()

        template = vm['TEMPLATE']

        self.disk = put_under_list(template.get('DISK', []))
        self.graphics = template.get('GRAPHICS', {})
        self.memory = template.get('MEMORY', None)
        self.nic = put_under_list(template.get('NIC', []))
        self.vcpu = template.get('VCPU', None)
        self.host = {
            'name': ((vm.get('HISTORY_RECORDS', {}) or {}).get('HISTORY', {}) or {}).get('HOSTNAME', None),
            'id': ((vm.get('HISTORY_RECORDS', {}) or {}).get('HISTORY', {}) or {}).get('HID', None),
        }
        self.snapshots = put_under_list(vm.get('SNAPSHOTS', []))

    def get_data(self):
        return {
            attr: getattr(self, attr)
            for attr in dir(self)
            if not attr.startswith('__') and not callable(getattr(self, attr))
        }


def main():
    with RPCClient('https://opennebula.ungleich.ch:2634/RPC2') as rpc_client:
        success, response, *_ = rpc_client.one.vmpool.infoextended(
            config['oca']['client_secrets'], VmFilterFlag.AllResources.value, START_ID, END_ID, ALL_VM_STATES
        )
        if success:
            vms = json.loads(json.dumps(parse(response)))['VM_POOL']['VM']
            for i, vm in enumerate(vms):
                vm_id = vm['ID']
                etcd_client.put(f'/opennebula/vm/{vm_id}', vm)

                parsed_vm = VM(vm)
                etcd_client.put(f'/opennebula/parsed_vm/{parsed_vm.id}', parsed_vm.get_data())
        else:
            print(response)


if __name__ == "__main__":
    main()