"""
Support for RallyDev

.. versionadded:: 2015.8.0

Requires a ``username`` and a ``password`` in ``/etc/salt/minion``:

.. code-block:: yaml

    rallydev:
      username: myuser@example.com
      password: 123pass
"""


import logging

import salt.utils.http
import salt.utils.json
from salt.exceptions import SaltInvocationError

log = logging.getLogger(__name__)


def __virtual__():
    """
    Only load the module if apache is installed
    """
    if not __opts__.get("rallydev", {}).get("username", None):
        return (
            False,
            "The rallydev execution module failed to load: rallydev:username not"
            " defined in config.",
        )
    if not __opts__.get("rallydev", {}).get("password", None):
        return (
            False,
            "The rallydev execution module failed to load: rallydev:password not"
            " defined in config.",
        )
    return True


def _get_token():
    """
    Get an auth token
    """
    username = __opts__.get("rallydev", {}).get("username", None)
    password = __opts__.get("rallydev", {}).get("password", None)
    path = "https://rally1.rallydev.com/slm/webservice/v2.0/security/authorize"
    result = salt.utils.http.query(
        path,
        decode=True,
        decode_type="json",
        text=True,
        status=True,
        username=username,
        password=password,
        cookies=True,
        persist_session=True,
        opts=__opts__,
    )
    if "dict" not in result:
        return None

    return result["dict"]["OperationResult"]["SecurityToken"]


def _query(
    action=None, command=None, args=None, method="GET", header_dict=None, data=None
):
    """
    Make a web call to RallyDev.
    """
    token = _get_token()
    username = __opts__.get("rallydev", {}).get("username", None)
    password = __opts__.get("rallydev", {}).get("password", None)
    path = "https://rally1.rallydev.com/slm/webservice/v2.0/"

    if action:
        path += action

    if command:
        path += "/{}".format(command)

    log.debug("RallyDev URL: %s", path)

    if not isinstance(args, dict):
        args = {}

    args["key"] = token

    if header_dict is None:
        header_dict = {"Content-type": "application/json"}

    if method != "POST":
        header_dict["Accept"] = "application/json"

    decode = True
    if method == "DELETE":
        decode = False

    return_content = None
    result = salt.utils.http.query(
        path,
        method,
        params=args,
        data=data,
        header_dict=header_dict,
        decode=decode,
        decode_type="json",
        text=True,
        status=True,
        username=username,
        password=password,
        cookies=True,
        persist_session=True,
        opts=__opts__,
    )
    log.debug("RallyDev Response Status Code: %s", result["status"])
    if "error" in result:
        log.error(result["error"])
        return [result["status"], result["error"]]

    return [result["status"], result.get("dict", {})]


def list_items(name):
    """
    List items of a particular type

    CLI Examples:

    .. code-block:: bash

        salt myminion rallydev.list_<item name>s
        salt myminion rallydev.list_users
        salt myminion rallydev.list_artifacts
    """
    status, result = _query(action=name)
    return result


def query_item(name, query_string, order="Rank"):
    """
    Query a type of record for one or more items. Requires a valid query string.
    See https://rally1.rallydev.com/slm/doc/webservice/introduction.jsp for
    information on query syntax.

    CLI Example:

    .. code-block:: bash

        salt myminion rallydev.query_<item name> <query string> [<order>]
        salt myminion rallydev.query_task '(Name contains github)'
        salt myminion rallydev.query_task '(Name contains reactor)' Rank
    """
    status, result = _query(action=name, args={"query": query_string, "order": order})
    return result


def show_item(name, id_):
    """
    Show an item

    CLI Example:

    .. code-block:: bash

        salt myminion rallydev.show_<item name> <item id>
    """
    status, result = _query(action=name, command=id_)
    return result


def update_item(name, id_, field=None, value=None, postdata=None):
    """
    Update an item. Either a field and a value, or a chunk of POST data, may be
    used, but not both.

    CLI Example:

    .. code-block:: bash

        salt myminion rallydev.update_<item name> <item id> field=<field> value=<value>
        salt myminion rallydev.update_<item name> <item id> postdata=<post data>
    """

    if field and value:
        if postdata:
            raise SaltInvocationError(
                "Either a field and a value, or a chunk "
                "of POST data, may be specified, but not both."
            )
        postdata = {name.title(): {field: value}}

    if postdata is None:
        raise SaltInvocationError(
            "Either a field and a value, or a chunk of POST data must be specified."
        )

    status, result = _query(
        action=name,
        command=id_,
        method="POST",
        data=salt.utils.json.dumps(postdata),
    )
    return result


def show_artifact(id_):
    """
    Show an artifact

    CLI Example:

    .. code-block:: bash

        salt myminion rallydev.show_artifact <artifact id>
    """
    return show_item("artifact", id_)


def list_users():
    """
    List the users

    CLI Example:

    .. code-block:: bash

        salt myminion rallydev.list_users
    """
    return list_items("user")


def show_user(id_):
    """
    Show a user

    CLI Example:

    .. code-block:: bash

        salt myminion rallydev.show_user <user id>
    """
    return show_item("user", id_)


def update_user(id_, field, value):
    """
    Update a user

    CLI Example:

    .. code-block:: bash

        salt myminion rallydev.update_user <user id> <field> <new value>
    """
    return update_item("user", id_, field, value)


def query_user(query_string, order="UserName"):
    """
    Update a user

    CLI Example:

    .. code-block:: bash

        salt myminion rallydev.query_user '(Name contains Jo)'
    """
    return query_item("user", query_string, order)
