"""Delete a placement group."""

import click

from SoftLayer.CLI.command import SLCommand as SLCommand
from SoftLayer.CLI import environment
from SoftLayer.CLI import exceptions
from SoftLayer.CLI import formatting
from SoftLayer.CLI import helpers
from SoftLayer.managers.vs import VSManager as VSManager
from SoftLayer.managers.vs_placement import PlacementManager as PlacementManager


@click.command(cls=SLCommand, epilog="Once provisioned, virtual guests can be managed with the slcli vs commands")
@click.argument('identifier')
@click.option('--purge', is_flag=True,
              help="Delete all guests in this placement group. "
                   "The group itself can be deleted once all VMs are fully reclaimed")
@environment.pass_env
def cli(env, identifier, purge):
    """Delete a placement group.

    Placement Group MUST be empty before you can delete it.

    IDENTIFIER can be either the Name or Id of the placement group you want to view
    """
    manager = PlacementManager(env.client)
    group_id = helpers.resolve_id(manager.resolve_ids, identifier, 'placement_group')

    if purge:
        placement_group = manager.get_object(group_id)
        guest_list = ', '.join([guest['fullyQualifiedDomainName'] for guest in placement_group['guests']])
        if len(placement_group['guests']) < 1:
            raise exceptions.CLIAbort('No virtual servers were found in placement group %s' % identifier)

        click.secho("You are about to delete the following guests!\n%s" % guest_list, fg='red')
        if not (env.skip_confirmations or formatting.confirm("This action will cancel all guests! Continue?")):
            raise exceptions.CLIAbort('Aborting virtual server order.')
        vm_manager = VSManager(env.client)
        for guest in placement_group['guests']:
            click.secho("Deleting %s..." % guest['fullyQualifiedDomainName'])
            vm_manager.cancel_instance(guest['id'])
        return

    click.secho("You are about to delete the following placement group! %s" % identifier, fg='red')
    if not (env.skip_confirmations or formatting.confirm("This action will cancel the placement group! Continue?")):
        raise exceptions.CLIAbort('Aborting virtual server order.')
    cancel_result = manager.delete(group_id)
    if cancel_result:
        click.secho("Placement Group %s has been canceld." % identifier, fg='green')
