Fix youtube search

[LaurentLouf]

Hello !

I'm currently trying to make the Youtube search (and I guess play), so I thought it might be interesting to share my progress with others here, until I reach the point where I'll do a PR (if I have time).

First thing I've done is to change the Youtube API key that is in the mopidy-youtube package by one of my own. Just search Google API console, create a new project, then add an API and select the Youtube API data V3 API. The file you have to edit after that is located at `/usr/local/lib/python2.7/dist-packages/mopidy_youtube/backend.py :

# -*- coding: utf-8 -*-

from __future__ import unicode_literals

import re
import string
import unicodedata
from multiprocessing.pool import ThreadPool
from urlparse import parse_qs, urlparse

from mopidy import backend
from mopidy.models import Album, SearchResult, Track

import pafy

import pykka

import requests

from mopidy_youtube import logger

yt_api_endpoint = 'https://www.googleapis.com/youtube/v3/'
yt_key = 'yourYTAPIkeyhere'
session = requests.Session()

video_uri_prefix = 'youtube:video'
search_uri = 'youtube:search'

The second step is to update pafy and youtube-dl. Below the process with some trials in between and confirmation that the package works after the updates :

root@MusicBox:~# ytdl B31Vgqytoa4
ERROR: B31Vgqytoa4: YouTube said: HTTP is not supported.
Traceback (most recent call last):
  File "/usr/local/bin/ytdl", line 199, in <module>
    main()
  File "/usr/local/bin/ytdl", line 141, in main
    vid = pafy.new(args.url)
  File "/usr/local/lib/python2.7/dist-packages/pafy/pafy.py", line 124, in new
    return Pafy(url, basic, gdata, size, callback, ydl_opts)
  File "/usr/local/lib/python2.7/dist-packages/pafy/backend_youtube_dl.py", line 29, in __init__
    super(YtdlPafy, self).__init__(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/pafy/backend_shared.py", line 96, in __init__
    self._fetch_basic()
  File "/usr/local/lib/python2.7/dist-packages/pafy/backend_youtube_dl.py", line 41, in _fetch_basic
    raise IOError(str(e).replace('YouTube said', 'Youtube says'))
IOError: ERROR: B31Vgqytoa4: Youtube says: HTTP is not supported.
root@MusicBox:~# 
root@MusicBox:~# 
root@MusicBox:~# 
root@MusicBox:~# sudo pip install --upgrade pafy
/usr/local/lib/python2.7/dist-packages/cryptography/hazmat/primitives/constant_time.py:26: CryptographyDeprecationWarning: Support for your Python version is deprecated. The next version of cryptography will remove support. Please upgrade to a 2.7.x release that supports hmac.compare_digest as soon as possible.
  utils.DeprecatedIn23,
/usr/local/lib/python2.7/dist-packages/cryptography/hazmat/bindings/openssl/binding.py:163: CryptographyDeprecationWarning: OpenSSL version 1.0.1 is no longer supported by the OpenSSL project, please upgrade. A future version of cryptography will drop support for it.
  utils.CryptographyDeprecationWarning
Collecting pafy
  Downloading https://files.pythonhosted.org/packages/74/69/829919eeadff695338f98fa12bb99e45490761a2010c8d688d88b6df194a/pafy-0.5.5-py2.py3-none-any.whl
Installing collected packages: pafy
  Found existing installation: pafy 0.5.4
    Uninstalling pafy-0.5.4:
      Successfully uninstalled pafy-0.5.4
Successfully installed pafy-0.5.5
You are using pip version 18.1, however version 20.2b1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
root@MusicBox:~# 
root@MusicBox:~# 
root@MusicBox:~# 
root@MusicBox:~# ytdl B31Vgqytoa4
ERROR: B31Vgqytoa4: YouTube said: Invalid parameters.
Traceback (most recent call last):
  File "/usr/local/bin/ytdl", line 209, in <module>
    main()
  File "/usr/local/bin/ytdl", line 151, in main
    vid = pafy.new(args.url)
  File "/usr/local/lib/python2.7/dist-packages/pafy/pafy.py", line 124, in new
    return Pafy(url, basic, gdata, size, callback, ydl_opts=ydl_opts)
  File "/usr/local/lib/python2.7/dist-packages/pafy/backend_youtube_dl.py", line 31, in __init__
    super(YtdlPafy, self).__init__(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/pafy/backend_shared.py", line 97, in __init__
    self._fetch_basic()
  File "/usr/local/lib/python2.7/dist-packages/pafy/backend_youtube_dl.py", line 43, in _fetch_basic
    raise IOError(str(e).replace('YouTube said', 'Youtube says'))
IOError: ERROR: B31Vgqytoa4: Youtube says: Invalid parameters.
root@MusicBox:~# 
root@MusicBox:~# 
root@MusicBox:~# 
root@MusicBox:~# sudo pip install --upgrade youtube-dl==2020.06.16.1
/usr/local/lib/python2.7/dist-packages/cryptography/hazmat/primitives/constant_time.py:26: CryptographyDeprecationWarning: Support for your Python version is deprecated. The next version of cryptography will remove support. Please upgrade to a 2.7.x release that supports hmac.compare_digest as soon as possible.
  utils.DeprecatedIn23,
/usr/local/lib/python2.7/dist-packages/cryptography/hazmat/bindings/openssl/binding.py:163: CryptographyDeprecationWarning: OpenSSL version 1.0.1 is no longer supported by the OpenSSL project, please upgrade. A future version of cryptography will drop support for it.
  utils.CryptographyDeprecationWarning
Collecting youtube-dl==2020.06.16.1
  Downloading https://files.pythonhosted.org/packages/a4/5f/db1fb30596fbfabd3500e741cd9c73d0cb1d25387582fd21289bed05a9c2/youtube_dl-2020.6.16.1-py2.py3-none-any.whl (1.8MB)
    100% |################################| 1.8MB 907kB/s 
Installing collected packages: youtube-dl
  Found existing installation: youtube-dl 2019.1.2
    Uninstalling youtube-dl-2019.1.2:
      Successfully uninstalled youtube-dl-2019.1.2
Successfully installed youtube-dl-2020.6.16.1
You are using pip version 18.1, however version 20.2b1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
root@MusicBox:~# 
root@MusicBox:~# 
root@MusicBox:~# 
root@MusicBox:~# ytdl 4XUipCxjmmw
Stream Type    Format Quality         Size            
------ ----    ------ -------         ----            
1      normal  mp4    [540x360]      272 MB           
2      audio   webm   [160k]          56 MB           
3      audio   m4a    [128k]          55 MB           
4      audio   webm   [70k]           28 MB           
5      audio   webm   [50k]           21 MB           
root@MusicBox:~#

And well, it seems to work for the search, stay tuned for making sure that it actually works when trying to play a thune

[LeChatNoir666]

Great so far!
Got the search to work too...
Any ideas how to play the songs now?