app/browse/__init__.py

   1 import requests
   2 from flask import Blueprint, render_template, request, flash, g, url_for, redirect
   3 from flask_login import current_user
   4 from werkzeug.exceptions import BadRequest, NotFound
   5
   6 from ..common.common import *
   7 from ..common.innertube import *
   8 from .lib import *
   9 from .protobuf import make_sp, make_channel_params, make_playlist_params
  10
  11 frontend = Blueprint('browse', __name__,
  12     template_folder='templates',
  13     static_folder='static',
  14     static_url_path='/static/ys')
  15
  16 @frontend.route('/results')
  17 @frontend.route('/search')
  18 def search():
  19     #token = getattr(current_user, 'token', 'guest')
  20     q = request.args.get('q') or request.args.get('search_query')
  21     page = int(request.args.get('page') or 1)
  22
  23     sp = make_sp(**{
  24         k:v for k,v in request.args.items()
  25         if k in ['sort','date','type','len']
  26     }, extras=['dont_fix_spelling']*0) # extras disabled
  27
  28     if q:
  29         yt_results = fetch_searchresults(q, page, sp)
  30
  31         results, extras = prepare_searchresults(yt_results)
  32
  33         for extra in extras:
  34             flash(extra, 'info')
  35     else:
  36         results = None
  37
  38     return render_template('search.html.j2', rows=results, query=q, page=page)
  39
  40 # TODO: channels, playlists:
  41 # https://github.com/iv-org/invidious/blob/452d1e8307d6344dd51c5437ccd032a566291c34/src/invidious/channels.cr#L399
  42
  43 @frontend.route('/channel/<channel_id>/')
  44 @frontend.route('/channel/<channel_id>/<subpage>')
  45 def channel(channel_id, subpage="videos"):
  46     token = getattr(current_user, 'token', 'guest')
  47     if subpage == "videos":
  48         page = int(request.args.get('page', 1))
  49         sort_by = request.args.get('sort') or "newest"
  50         query = None
  51     elif subpage == "playlists":
  52         page = None # TODO: cursor
  53         sort_by = request.args.get('sort', "modified")
  54         query = None
  55     elif subpage == "search":
  56         query = request.args.get('q')
  57         page = int(request.args.get('page', 1))
  58         sort_by = None
  59     else: # we don't support /home, /about, ..., so redirect to /videos.
  60         return redirect(url_for('.channel', channel_id=channel_id))
  61
  62     # best effort; if it fails, it fails in the redirect.
  63     if not re.match(r"(UC[A-Za-z0-9_-]{22})", channel_id):
  64         return redirect(url_for('.channel_redirect', user=channel_id))
  65
  66     result = fetch_ajax(make_channel_params(channel_id, subpage, page, sort_by, query, v3=(subpage == "videos")))
  67
  68     title, descr, thumb, rows, more = prepare_channel(result, channel_id)
  69
  70     if title is None or not rows: # if fetching from innertube failed, fall back to xmlfeed:
  71         flash("unable to fetch results from ajax; displaying fallback results (15 newest)", "error")
  72         return fallback_route(channel_id, subpage)
  73
  74     # set pin/hide stati of retrieved videos:
  75     video_ids = [card['content']['video_id'] for card in rows]
  76     pinned, hidden = fetch_video_flags(token, video_ids)
  77     rows = sorted([
  78         {'type':v['type'], 'content':{**v['content'], 'pinned': v['content']['video_id'] in pinned}}
  79         for v in rows
  80         if v['content']['video_id'] not in hidden
  81     ], key=lambda v:v['content']['pinned'], reverse=True)
  82
  83     with sqlite3.connect(cf['global']['database']) as conn:
  84         c = conn.cursor()
  85         c.execute("""
  86             SELECT COUNT(*)
  87               FROM subscriptions
  88              WHERE channel_id = ? AND user = ?
  89         """, (channel_id, token))
  90         (is_subscribed,) = c.fetchone()
  91
  92     return render_template('channel.html.j2',
  93         title=title,
  94         subpage=subpage,
  95         rows=rows,
  96         channel_id=channel_id,
  97         channel_img=thumb,
  98         channel_desc=descr,
  99         is_subscribed=is_subscribed,
 100         page=page,
 101         has_more=more)
 102
 103 @frontend.route('/user/<user>/')
 104 @frontend.route('/user/<user>/<subpage>')
 105 @frontend.route('/c/<user>/')
 106 @frontend.route('/c/<user>/<subpage>')
 107 def channel_redirect(user, subpage=None):
 108     """
 109     The browse_ajax 'API' needs the UCID. We can get that from the RSS feeds.
 110     """
 111
 112     # inverse of the test in /channel/:
 113     if re.match(r"(UC[A-Za-z0-9_-]{22})", user):
 114         return redirect(url_for('.channel', channel_id=user))
 115
 116     xmlfeed = fetch_xml("user", user)
 117     if not xmlfeed:
 118         raise NotFound("channel appears to not exist")
 119     _, _, _, channel_id, _ = parse_xml(xmlfeed)
 120     return redirect(
 121         url_for('.channel', channel_id=channel_id, subpage=subpage), 308
 122     )
 123
 124 @frontend.route('/playlist')
 125 def playlist():
 126     #TODO: if anything goes wrong, fall back to xmlfeed
 127     playlist_id = request.args.get('list')
 128     if not playlist_id:
 129         raise BadRequest("No playlist ID")
 130     page = int(request.args.get('page', 1))
 131
 132     xmlfeed = fetch_xml("playlist_id", playlist_id)
 133     if not xmlfeed:
 134         raise NotFound("Unable to fetch playlist")
 135     title, author, _, channel_id, _ = parse_xml(xmlfeed)
 136
 137     offset = (page-1)*100 # each call returns 100 items
 138     result = fetch_ajax(make_playlist_params(playlist_id, offset))
 139
 140     if not 'continuationContents' in result[1]['response']: # XXX: this needs cleanup!
 141         # code:"CONDITION_NOT_MET", debugInfo:"list type not viewable"
 142         # on playlist https://www.youtube.com/watch?v=6y_NJg-xoeE&list=RDgohHV9ryp-A&index=24 (not openable on yt.com)
 143         error = result[1]['response']['responseContext']['errors']['error'][0]
 144         flash(f"{error['code']}: {error['debugInfo'] or error['externalErrorMessage']}", 'error')
 145         return fallback_route()
 146     rows, more = prepare_playlist(result)
 147
 148     return render_template('playlist.html.j2',
 149         title=title,
 150         author=author,
 151         channel_id=channel_id,
 152         rows=rows,
 153         page=page,
 154         has_more=more)
 155
 156 @frontend.before_app_request
 157 def inject_button():
 158     if not 'header_items' in g:
 159         g.header_items = []
 160     g.header_items.append({
 161         'name': 'search',
 162         'url': url_for('browse.search'),
 163         'parent': frontend.name,
 164         'priority': 15,
 165     })