# -----------------------------------------------------------------------------
# Copyright (c) 2012 - 2018, Anaconda, Inc. and Intake contributors
# All rights reserved.
#
# The full license is in the LICENSE file, distributed with this software.
# -----------------------------------------------------------------------------
"""

"""

import logging

log = logging.getLogger(__name__)

# -----------------------------------------------------------------------------
# Imports
# -----------------------------------------------------------------------------

import sys

# Standard library imports
from importlib import import_module

# Intake imports
from intake import __version__
from intake.cli.util import Subcommand

# External imports


# -----------------------------------------------------------------------------
# API
# -----------------------------------------------------------------------------


class Info(Subcommand):
    """Display runtime information related to Intake"""

    name = "info"

    def initialize(self):
        pass

    def invoke(self, args):
        print("Python version      :  %s" % sys.version.split("\n")[0])
        print("IPython version     :  %s" % _version_from_module("IPython"))
        print("Tornado version     :  %s" % _version_from_module("tornado", "version"))
        print("Dask version        :  %s" % _version_from_module("dask"))
        print("Pandas version      :  %s" % _version_from_module("pandas"))
        print("Numpy version       :  %s" % _version_from_module("numpy"))
        print("Intake version      :  %s" % __version__)


def _version_from_module(modname, version_attr="__version__"):
    try:
        mod = import_module(modname)
        return getattr(mod, version_attr)
    except ImportError:
        return "(not installed)"