# -*- coding: utf-8 -*-
"""
Salt-specific interface for calling Salt Cloud directly
"""

# Import python libs
from __future__ import absolute_import, print_function, unicode_literals

import copy
import logging
import os

import salt.utils.data
from salt.exceptions import SaltCloudConfigError

# Import 3rd-party libs
from salt.ext import six

# Import salt libs
try:
    import salt.cloud

    HAS_SALTCLOUD = True
except ImportError:
    HAS_SALTCLOUD = False


log = logging.getLogger(__name__)

__func_alias__ = {"profile_": "profile"}


def __virtual__():
    """
    Only work on POSIX-like systems
    """
    if HAS_SALTCLOUD:
        return True
    return (
        False,
        "The cloud execution module cannot be loaded: only available on non-Windows systems.",
    )


def _get_client():
    """
    Return a cloud client
    """
    client = salt.cloud.CloudClient(
        os.path.join(os.path.dirname(__opts__["conf_file"]), "cloud"),
        pillars=copy.deepcopy(__pillar__.get("cloud", {})),
    )
    return client


def list_sizes(provider="all"):
    """
    List cloud provider sizes for the given providers

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.list_sizes my-gce-config
    """
    client = _get_client()
    sizes = client.list_sizes(provider)
    return sizes


def list_images(provider="all"):
    """
    List cloud provider images for the given providers

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.list_images my-gce-config
    """
    client = _get_client()
    images = client.list_images(provider)
    return images


def list_locations(provider="all"):
    """
    List cloud provider locations for the given providers

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.list_locations my-gce-config
    """
    client = _get_client()
    locations = client.list_locations(provider)
    return locations


def query(query_type="list_nodes"):
    """
    List cloud provider data for all providers

    CLI Examples:

    .. code-block:: bash

        salt minionname cloud.query
        salt minionname cloud.query list_nodes_full
        salt minionname cloud.query list_nodes_select
    """
    client = _get_client()
    info = client.query(query_type)
    return info


def full_query(query_type="list_nodes_full"):
    """
    List all available cloud provider data

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.full_query
    """
    return query(query_type=query_type)


def select_query(query_type="list_nodes_select"):
    """
    List selected nodes

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.select_query
    """
    return query(query_type=query_type)


def has_instance(name, provider=None):
    """
    Return true if the instance is found on a provider

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.has_instance myinstance
    """
    data = get_instance(name, provider)
    if data is None:
        return False
    return True


def get_instance(name, provider=None):
    """
    Return details on an instance.

    Similar to the cloud action show_instance
    but returns only the instance details.

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.get_instance myinstance

    SLS Example:

    .. code-block:: bash

        {{ salt['cloud.get_instance']('myinstance')['mac_address'] }}

    """
    data = action(fun="show_instance", names=[name], provider=provider)
    info = salt.utils.data.simple_types_filter(data)
    try:
        # get the first: [alias][driver][vm_name]
        info = next(six.itervalues(next(six.itervalues(next(six.itervalues(info))))))
    except AttributeError:
        return None
    return info


def profile_(profile, names, vm_overrides=None, opts=None, **kwargs):
    """
    Spin up an instance using Salt Cloud

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.profile my-gce-config myinstance
    """
    client = _get_client()
    if isinstance(opts, dict):
        client.opts.update(opts)
    info = client.profile(profile, names, vm_overrides=vm_overrides, **kwargs)
    return info


def map_run(path=None, **kwargs):
    """
    Execute a salt cloud map file

    Cloud Map data can be retrieved from several sources:

    - a local file (provide the path to the file to the 'path' argument)
    - a JSON-formatted map directly (provide the appropriately formatted to using the 'map_data' argument)
    - the Salt Pillar (provide the map name of under 'pillar:cloud:maps' to the 'map_pillar' argument)

    .. note::
        Only one of these sources can be read at a time. The options are listed
        in their order of precedence.

    CLI Examples:

    .. code-block:: bash

        salt minionname cloud.map_run /path/to/cloud.map
        salt minionname cloud.map_run path=/path/to/cloud.map
        salt minionname cloud.map_run map_pillar='<map_pillar>'
          .. versionchanged:: 2018.3.1
        salt minionname cloud.map_run map_data='<actual map data>'
    """
    client = _get_client()
    info = client.map_run(path, **kwargs)
    return info


def destroy(names):
    """
    Destroy the named VM(s)

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.destroy myinstance
    """
    client = _get_client()
    info = client.destroy(names)
    return info


def action(fun=None, cloudmap=None, names=None, provider=None, instance=None, **kwargs):
    """
    Execute a single action on the given provider/instance

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.action start instance=myinstance
        salt minionname cloud.action stop instance=myinstance
        salt minionname cloud.action show_image provider=my-ec2-config image=ami-1624987f
    """
    client = _get_client()
    try:
        info = client.action(fun, cloudmap, names, provider, instance, kwargs)
    except SaltCloudConfigError as err:
        log.error(err)
        return None

    return info


def create(provider, names, opts=None, **kwargs):
    """
    Create an instance using Salt Cloud

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.create my-ec2-config myinstance image=ami-1624987f size='t1.micro' ssh_username=ec2-user securitygroup=default delvol_on_destroy=True
    """
    client = _get_client()
    if isinstance(opts, dict):
        client.opts.update(opts)
    info = client.create(provider, names, **kwargs)
    return info


def volume_list(provider):
    """
    List block storage volumes

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.volume_list my-nova

    """
    client = _get_client()
    info = client.extra_action(action="volume_list", provider=provider, names="name")
    return info["name"]


def volume_delete(provider, names, **kwargs):
    """
    Delete volume

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.volume_delete my-nova myblock

    """
    client = _get_client()
    info = client.extra_action(
        provider=provider, names=names, action="volume_delete", **kwargs
    )
    return info


def volume_create(provider, names, **kwargs):
    """
    Create volume

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.volume_create my-nova myblock size=100 voltype=SSD

    """
    client = _get_client()
    info = client.extra_action(
        action="volume_create", names=names, provider=provider, **kwargs
    )
    return info


def volume_attach(provider, names, **kwargs):
    """
    Attach volume to a server

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.volume_attach my-nova myblock server_name=myserver device='/dev/xvdf'

    """
    client = _get_client()
    info = client.extra_action(
        provider=provider, names=names, action="volume_attach", **kwargs
    )
    return info


def volume_detach(provider, names, **kwargs):
    """
    Detach volume from a server

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.volume_detach my-nova myblock server_name=myserver

    """
    client = _get_client()
    info = client.extra_action(
        provider=provider, names=names, action="volume_detach", **kwargs
    )
    return info


def network_list(provider):
    """
    List private networks

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.network_list my-nova

    """
    client = _get_client()
    return client.extra_action(action="network_list", provider=provider, names="names")


def network_create(provider, names, **kwargs):
    """
    Create private network

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.network_create my-nova names=['salt'] cidr='192.168.100.0/24'

    """
    client = _get_client()
    return client.extra_action(
        provider=provider, names=names, action="network_create", **kwargs
    )


def virtual_interface_list(provider, names, **kwargs):
    """
    List virtual interfaces on a server

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.virtual_interface_list my-nova names=['salt-master']

    """
    client = _get_client()
    return client.extra_action(
        provider=provider, names=names, action="virtual_interface_list", **kwargs
    )


def virtual_interface_create(provider, names, **kwargs):
    """
    Attach private interfaces to a server

    CLI Example:

    .. code-block:: bash

        salt minionname cloud.virtual_interface_create my-nova names=['salt-master'] net_name='salt'

    """
    client = _get_client()
    return client.extra_action(
        provider=provider, names=names, action="virtual_interface_create", **kwargs
    )
