import os
import argparse

from uncloud.common.settings import settings
from uncloud.shared import shared

arg_parser = argparse.ArgumentParser('configure', add_help=False)
configure_subparsers = arg_parser.add_subparsers(dest='subcommand')

otp_parser = configure_subparsers.add_parser('otp')
otp_parser.add_argument('--verification-controller-url', required=True, metavar='URL')
otp_parser.add_argument('--auth-name', required=True, metavar='OTP-NAME')
otp_parser.add_argument('--auth-realm', required=True, metavar='OTP-REALM')
otp_parser.add_argument('--auth-seed', required=True, metavar='OTP-SEED')

network_parser = configure_subparsers.add_parser('network')
network_parser.add_argument('--prefix-length', required=True, type=int)
network_parser.add_argument('--prefix', required=True)
network_parser.add_argument('--vxlan-phy-dev', required=True)

netbox_parser = configure_subparsers.add_parser('netbox')
netbox_parser.add_argument('--url', required=True)
netbox_parser.add_argument('--token', required=True)

ssh_parser = configure_subparsers.add_parser('ssh')
ssh_parser.add_argument('--username', default='root')
ssh_parser.add_argument('--private-key-path', default=os.path.expanduser('~/.ssh/id_rsa'),)

storage_parser = configure_subparsers.add_parser('storage')
storage_parser.add_argument('--file-dir', required=True)
storage_parser_subparsers = storage_parser.add_subparsers(dest='storage_backend')

filesystem_storage_parser = storage_parser_subparsers.add_parser('filesystem')
filesystem_storage_parser.add_argument('--vm-dir', required=True)
filesystem_storage_parser.add_argument('--image-dir', required=True)

ceph_storage_parser = storage_parser_subparsers.add_parser('ceph')
ceph_storage_parser.add_argument('--ceph-vm-pool', required=True)
ceph_storage_parser.add_argument('--ceph-image-pool', required=True)


def update_config(section, kwargs):
    uncloud_config = shared.etcd_client.get(settings.config_key, value_in_json=True)
    if not uncloud_config:
        uncloud_config = {}
    else:
        uncloud_config = uncloud_config.value

    uncloud_config[section] = kwargs
    shared.etcd_client.put(settings.config_key, uncloud_config, value_in_json=True)


def main(**kwargs):
    subcommand = kwargs.pop('subcommand')
    if not subcommand:
        arg_parser.print_help()
    else:
        update_config(subcommand, kwargs)