#
#        This file is part of stov, written by Helmut Pozimski 2012-2017.
#
#       stov is free software: you can redistribute it and/or modify
#       it under the terms of the GNU General Public License as published by
#       the Free Software Foundation, version 2 of the License.
#
#       stov is distributed in the hope that it will be useful,
#       but WITHOUT ANY WARRANTY; without even the implied warranty of
#       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#       GNU General Public License for more details.
#
#       You should have received a copy of the GNU General Public License
#       along with stov.  If not, see <http://www.gnu.org/licenses/>.


# -*- coding: utf8 -*-

""" Provides a wrapper around youtube-dl"""

import subprocess
import sys
import logging

LOGGER = logging.getLogger("stov")


def get_ids(conf, url, title=""):
    """
    Retrieves the IDs
    :param conf: configuration object
    :type conf: lib_stov.configuration.Conf
    :param url: URL to pass to youtube-dl
    :type url: str
    :param title: optional title to match
    :type title: str
    :return: video IDs
    :rtype: list
    """
    videos_list = []
    if conf.outputlevel == "verbose":
        stderr = sys.stderr
    else:
        stderr = open("/dev/null", "w")
    if title:
        LOGGER.debug("Executing command: %s %s %s %s %s %s %s",
                     conf.values["youtube-dl"], "--max-downloads",
                     conf.values["maxvideos"], "--match-title",
                     title, "--get-id", url)
        try:
            video_ids = subprocess.check_output(
                [conf.values["youtube-dl"], "--max-downloads",
                 conf.values["maxvideos"], "--match-title",
                 title, "--get-id", url], stderr=stderr)
        except subprocess.CalledProcessError as error_message:
            video_ids = error_message.output
    else:
        LOGGER.debug("Executing command: %s %s %s %s %s",
                     conf.values["youtube-dl"], "--max-downloads",
                     conf.values["maxvideos"], "--get-id", url)
        try:
            video_ids = subprocess.check_output(
                [conf.values["youtube-dl"], "--max-downloads",
                 conf.values["maxvideos"], "--get-id", url], stderr=stderr)
        except subprocess.CalledProcessError as error_message:
            video_ids = error_message.output
    video_ids = video_ids.decode(sys.stdout.encoding).strip()
    for video in video_ids.split("\n"):
        videos_list.append(video)
    LOGGER.debug("generated list: %s", videos_list)
    return videos_list


def get_title(conf, url):
    """
    Retrieves the title of a specified video

    :param conf: configuration object
    :type conf: lib_stov.configuration.Conf
    :param url: URL to pass to youtube-dl
    :type url: str
    """
    if conf.outputlevel == "verbose":
        stderr = sys.stderr
    else:
        stderr = open("/dev/null", "w")
    LOGGER.debug("Executing command: %s %s %s",
                 conf.values["youtube-dl"], "--get-title", url)
    video_title = subprocess.check_output([
        conf.values["youtube-dl"], "--get-title", url], stderr=stderr)
    video_title = video_title.decode(sys.stdout.encoding)
    return video_title