#!/usr/bin/env python

"""
* *******************************************************
* Copyright (c) VMware, Inc. 2016-2018. All Rights Reserved.
* SPDX-License-Identifier: MIT
* *******************************************************
*
* DISCLAIMER. THIS PROGRAM IS PROVIDED TO YOU "AS IS" WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, WHETHER ORAL OR WRITTEN,
* EXPRESS OR IMPLIED. THE AUTHOR SPECIFICALLY DISCLAIMS ANY IMPLIED
* WARRANTIES OR CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY,
* NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE.
"""

__author__ = 'VMware, Inc.'
__vcenter_version__ = '6.5+'

from com.vmware.vcenter.vm.hardware.boot_client import Device as BootDevice
from com.vmware.vcenter.vm.hardware_client import (
    Disk, Ethernet)
from com.vmware.vcenter.vm.hardware_client import ScsiAddressSpec
from com.vmware.vcenter.vm_client import (Power)
from com.vmware.vcenter_client import VM
from vmware.vapi.vsphere.client import create_vsphere_client

from samples.vsphere.common.ssl_helper import get_unverified_session
from samples.vsphere.common import sample_cli
from samples.vsphere.common import sample_util
from samples.vsphere.common.sample_util import pp
from samples.vsphere.vcenter.helper import network_helper
from samples.vsphere.vcenter.helper import vm_placement_helper
from samples.vsphere.vcenter.helper.vm_helper import get_vm
from samples.vsphere.vcenter.setup import testbed


class CreateBasicVM(object):
    """
    Demonstrates how to create a basic VM with following configuration:
    2 disks, 1 nic

    Sample Prerequisites:
        - datacenter
        - vm folder
        - datastore
        - standard switch network
    """

    def __init__(self, client=None, placement_spec=None):
        self.client = client
        self.placement_spec = placement_spec
        self.vm_name = testbed.config['VM_NAME_BASIC']
        self.cleardata = None

        # Execute the sample in standalone mode.
        if not self.client:
            parser = sample_cli.build_arg_parser()
            parser.add_argument('-n', '--vm_name',
                                action='store',
                                help='Name of the testing vm')
            args = sample_util.process_cli_args(parser.parse_args())
            if args.vm_name:
                self.vm_name = args.vm_name
            self.cleardata = args.cleardata

            session = get_unverified_session() if args.skipverification else None
            self.client = create_vsphere_client(server=args.server,
                                                username=args.username,
                                                password=args.password,
                                                session=session)

    def run(self):
        # Get a placement spec
        datacenter_name = testbed.config['VM_DATACENTER_NAME']
        vm_folder_name = testbed.config['VM_FOLDER2_NAME']
        datastore_name = testbed.config['VM_DATASTORE_NAME']
        std_portgroup_name = testbed.config['STDPORTGROUP_NAME']

        if not self.placement_spec:
            self.placement_spec = vm_placement_helper.get_placement_spec_for_resource_pool(
                self.client,
                datacenter_name,
                vm_folder_name,
                datastore_name)

        # Get a standard network backing
        standard_network = network_helper.get_standard_network_backing(
            self.client,
            std_portgroup_name,
            datacenter_name)

        """
        Create a basic VM.

        Using the provided PlacementSpec, create a VM with a selected Guest OS
        and provided name.

        Create a VM with the following configuration:
        * Create 2 disks and specify one of them on scsi0:0 since it's the boot disk
        * Specify 1 ethernet adapter using a Standard Portgroup backing
        * Setup for PXE install by selecting network as first boot device

        Use guest and system provided defaults for most configuration settings.
        """
        guest_os = testbed.config['VM_GUESTOS']

        boot_disk = Disk.CreateSpec(type=Disk.HostBusAdapterType.SCSI,
                                    scsi=ScsiAddressSpec(bus=0, unit=0),
                                    new_vmdk=Disk.VmdkCreateSpec())
        data_disk = Disk.CreateSpec(new_vmdk=Disk.VmdkCreateSpec())

        nic = Ethernet.CreateSpec(
            start_connected=True,
            backing=Ethernet.BackingSpec(
                type=Ethernet.BackingType.STANDARD_PORTGROUP,
                network=standard_network))

        boot_device_order = [
            BootDevice.EntryCreateSpec(BootDevice.Type.ETHERNET),
            BootDevice.EntryCreateSpec(BootDevice.Type.DISK)]

        vm_create_spec = VM.CreateSpec(name=self.vm_name,
                                       guest_os=guest_os,
                                       placement=self.placement_spec,
                                       disks=[boot_disk, data_disk],
                                       nics=[nic],
                                       boot_devices=boot_device_order)
        print('\n# Example: create_basic_vm: Creating a VM using spec\n-----')
        print(pp(vm_create_spec))
        print('-----')

        vm = self.client.vcenter.VM.create(vm_create_spec)

        print("create_basic_vm: Created VM '{}' ({})".format(self.vm_name, vm))

        vm_info = self.client.vcenter.VM.get(vm)
        print('vm.get({}) -> {}'.format(vm, pp(vm_info)))

        return vm

    def cleanup(self):
        vm = get_vm(self.client, self.vm_name)
        if vm:
            state = self.client.vcenter.vm.Power.get(vm)
            if state == Power.Info(state=Power.State.POWERED_ON):
                self.client.vcenter.vm.Power.stop(vm)
            elif state == Power.Info(state=Power.State.SUSPENDED):
                self.client.vcenter.vm.Power.start(vm)
                self.client.vcenter.vm.Power.stop(vm)
            print("Deleting VM '{}' ({})".format(self.vm_name, vm))
            self.client.vcenter.VM.delete(vm)


def main():
    create_basic_vm = CreateBasicVM()
    create_basic_vm.cleanup()
    create_basic_vm.run()
    if create_basic_vm.cleardata:
        create_basic_vm.cleanup()


if __name__ == '__main__':
    main()