stov/youtube.py

#
#	This file is part of stov, written by Helmut Pozimski in 2012.
#
#	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 -*-

import os
import sys
import gettext
import sqlite3
import subprocess

from outputhelper import printf


class video(object):
	def __init__(self, title, description, ytid, conf, downloaded, failcount=0,
			id=0):
		self.__ID = id
		self.title = title
		self.description = description
		self.ytid = ytid
		self.__conf = conf
		self.downloaded = downloaded
		self.failcnt = int(failcount)

	def DownloadVideo(self, directory, itag_value):
		"""Downloads the video by calling youtube-dl as an external process"""
		self.__targetdir = self.__conf.values["downloaddir"] + "/" + directory
		if os.access(self.__targetdir, os.F_OK) is False:
			try:
				printf(_("Creating directory %s" % self.__targetdir),
					outputlevel="verbose", level=self.__conf.outputlevel, descriptor="stderr")
				os.makedirs(self.__targetdir, 0750)
			except os.error:
				printf(_("Download directory does not exist \
and can't be created. Please check your configuration and try again"),
					outputlevel="default", level=self.__conf.outputlevel, descriptor="stderr")

		os.chdir(self.__targetdir)
		if self.downloaded == 0:
			try:
				printf(_('Downloading video "%s"' % self.title),
					outputlevel="verbose", level=self.__conf.outputlevel, descriptor="stderr")
				if self.__conf.outputlevel == "default":
					subprocess.check_call(["youtube-dl", "--max-quality=%s"
					% itag_value, "-t", "http://www.youtube.com/watch?v=%s" % self.ytid],
					stderr=sys.stderr, stdout=open("/dev/null", "w"))
				elif self.__conf.outputlevel == "verbose":
					subprocess.check_call(["youtube-dl", "--max-quality=%s"
					% itag_value, "-t", "http://www.youtube.com/watch?v=%s" % self.ytid],
					stderr=sys.stderr, stdout=sys.stdout)
				elif self.__conf.outputlevel == "quiet":
					subprocess.check_call(["youtube-dl", "--max-quality=%s"
					% itag_value, "-t", "http://www.youtube.com/watch?v=%s" % self.ytid],
					stderr=open("/dev/null", "w"), stdout=open("/dev/null", "w"))
				try:
					self.__database = sqlite3.connect(self.__conf.dbpath)
				except sqlite3.OperationalError:
					printf(_("The Video \"%s\" has been "
								"downloaded but the status could not be updated in the database. "
								"Please check what went wrong and correct it" % self.title),
						outputlevel="default", level=self.__conf.outputlevel,
							descriptor="stderr")
				else:
					self.__cursor = self.__database.cursor()
					printf(_('Downloaded video "%s", updating database accordingly.'
						% self.title), outputlevel="verbose", level=self.__conf.outputlevel,
						descriptor="stderr")
					self.__query = "UPDATE videos SET downloaded ='1' WHERE id = ?"
					self.__cursor.execute(self.__query, (self.__ID,))
					self.__database.commit()
					self.__database.close()

			except subprocess.CalledProcessError:
				printf(_("The video %s could not be downloaded "
							"due to some problem with youtube-dl. If this happens to more than one "
							"video, please check your youtube-dl version" % self.title),
					outputlevel="default", level=self.__conf.outputlevel, descriptor="stderr")
				try:
					self.__database = sqlite3.connect(self.__conf.dbpath)
				except sqlite3.OperationalError:
					printf(_("The Video \"%s\" has failed "
								"downloading but the status could not be updated in the database. "
								"Please check what went wrong and correct it" % self.title),
						outputlevel="default", level=self.__conf.outputlevel,
							descriptor="stderr")
				else:
					self.__cursor = self.__database.cursor()
					self.failcnt = int(self.failcnt) + 1
					if self.failcnt >= int(self.__conf.values["maxfails"]):
						printf(_("The video \"%s\" has failed downloading too often, marking as"
							" failed" % self.title), outputlevel="default",
							level=self.__conf.outputlevel, descriptor="stderr")
						self.__statement = "UPDATE videos SET downloaded = -1 WHERE id = ?"
						self.__cursor.execute(self.__statement, (self.__ID,))
					self.__statement = "UPDATE videos SET failcnt = ? WHERE id = ?"
					self.__cursor.execute(self.__statement, (self.failcnt, self.__ID))
					self.__database.commit()
					self.__database.close()
				return False
			else:
				return True

	def AssignDBID(self, id):
		self.__ID = id

	def delete(self):
		try:
			self.__database = sqlite3.connect(self.__conf.dbpath)
		except sqlite3.OperationalError:
			printf(_("Could not connect to the database, please check settings and"
				"permissions and try again"), outputlevel="default",
				level=self.__conf.outputlevel, descriptor="stderr")
			return False
		else:
			self.__cursor = self.__database.cursor()
			self.__statement = "DELETE FROM videos where id = ?"
			self.__cursor.execute(self.__statement, (self.__ID,))
			self.__database.commit()
			self.__database.close()
			return True