app/reddit/__init__.py

   1 import re
   2 import sqlite3
   3 from flask_login import current_user, login_required
   4 from flask import Blueprint, render_template, request, redirect, flash, url_for
   5
   6 from ..common.common import *
   7 from .lib import *
   8
   9 frontend = Blueprint('reddit', __name__,
  10     template_folder='templates',
  11     static_folder='static',
  12     static_url_path='/static/rd')
  13
  14 @frontend.route('/feed/subreddits')
  15 @frontend.route('/r/<subreddit>/')
  16 def reddit(subreddit=None):
  17     token = getattr(current_user, 'token', 'guest')
  18     count = request.args.get('count', 0, type=int)
  19     before = request.args.get('before')
  20     after = request.args.get('after')
  21
  22     sortorder = request.args.get('s', "hot") # TODO: verify!
  23     timerange = request.args.get('t', None) # TODO: verify!
  24
  25     all_subreddits = get_subreddits(token)
  26     subreddits = [subreddit] if subreddit else all_subreddits
  27
  28     if subreddits:
  29         try:
  30             data = fetch_reddit(subreddits,
  31                     sorted_by=sortorder, time=timerange, limit=36,
  32                     count=count, before=before, after=after)
  33             videos = parse_reddit_videos(data)
  34             before = data['data']['before']
  35             after = data['data']['after']
  36         except RedditException as e:
  37             return f"error retrieving reddit data: <xmp>{e}</xmp>", 502 # TODO: better
  38
  39         # set pin/hide stati of retrieved videos
  40         video_ids = [v['video_id'] for v in videos]
  41         pinned, hidden = fetch_video_flags(token, video_ids)
  42         videos = sorted([
  43             {**v, 'pinned': v['video_id'] in pinned}
  44             for v in videos
  45             if v['video_id'] not in hidden
  46         ], key=lambda v:v['pinned'], reverse=True)
  47     else: # not subscribed to anything
  48         videos = []
  49
  50     title = f"/r/{subreddit}" if subreddit else "my subreddits"
  51     return render_template('reddit.html.j2', title=title, rows=videos,
  52         subreddits=all_subreddits, before=before, after=after, count=count)
  53
  54 @frontend.route('/manage/subreddits')
  55 # disabled for guest user: @login_required
  56 def subscription_manager():
  57     token = getattr(current_user, 'token', 'guest')
  58     subreddits = get_subreddits(token)
  59     return render_template('subreddit_manager.html.j2', subreddits=subreddits)
  60
  61 @frontend.route('/manage/subreddits', methods=['POST'])
  62 @login_required
  63 def manage_subscriptions():
  64     token = current_user.token
  65     if 'subscribe' in request.form:
  66         subreddit = request.form.get("subscribe")
  67         match = re.search(r"(?:(?:https?://)?(?:old.|www.|\w\w.)?reddit.com)?(?:/?r/)?([-+_0-9A-Za-z]{2,21})", subreddit)
  68         if match:
  69             subreddit = match.group(1)
  70         else:
  71             flash("invalid subreddit", "error")
  72             return redirect(request.url, code=303)
  73         with sqlite3.connect(cf['global']['database']) as conn:
  74             c = conn.cursor()
  75             c.execute("""
  76                         INSERT OR IGNORE INTO subreddits (user, subreddit)
  77                         VALUES (?, ?)
  78             """, (token, subreddit))
  79
  80     elif 'unsubscribe' in request.form:
  81         subreddit = request.form.get("unsubscribe")
  82         with sqlite3.connect(cf['global']['database']) as conn:
  83             c = conn.cursor()
  84             c.execute("""
  85                         DELETE FROM subreddits
  86                         WHERE user = ? AND subreddit = ?
  87             """, (token, subreddit))
  88             # TODO: sql-error-handling, report success
  89
  90     else:
  91         flash("unsupported action", "error")
  92
  93     return redirect(request.url, code=303)
  94
  95 def get_subreddits(token):
  96     with sqlite3.connect(cf['global']['database']) as conn:
  97         c = conn.cursor()
  98         c.execute("""
  99           SELECT subreddit
 100             FROM subreddits
 101            WHERE user = ?
 102         ORDER BY subreddit COLLATE NOCASE ASC
 103         """, (token,))
 104         subreddits = [sr for (sr,) in c.fetchall()]
 105     return subreddits
 106
 107 @frontend.app_template_filter('trim3')
 108 def trim3(n):
 109     if type(n) != int:
 110         return n # not a number
 111     elif round(n, 1) >= 10_000:
 112         return "%.0fk" % (n/1000)
 113     elif n >= 1_000:
 114         return "%.1fk" % (n/1000)
 115     else:
 116         return "%d" % n
 117
 118 @frontend.before_app_request
 119 def inject_reddit_button():
 120     if not 'header_items' in g:
 121         g.header_items = []
 122     g.header_items.append({
 123         'name': 'reddit',
 124         'url': url_for('reddit.reddit'),
 125         'parent': frontend.name,
 126         'priority': 5
 127     })