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 = int(request.args.get('count', 0))
  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     try:
  29         data = fetch_reddit(subreddits,
  30                 sorted_by=sortorder, time=timerange, limit=36,
  31                 count=count, before=before, after=after)
  32         videos = parse_reddit_videos(data)
  33         before = data['data']['before']
  34         after = data['data']['after']
  35     except RedditException as e:
  36         return f"error retrieving reddit data: <xmp>{e}</xmp>", 502 # TODO: better
  37
  38     # set pin/hide stati of retrieved videos
  39     video_ids = [v['video_id'] for v in videos]
  40     pinned, hidden = fetch_video_flags(token, video_ids)
  41     videos = sorted([
  42         {**v, 'pinned': v['video_id'] in pinned}
  43         for v in videos
  44         if v['video_id'] not in hidden
  45     ], key=lambda v:v['pinned'], reverse=True)
  46
  47     title = f"/r/{subreddit}" if subreddit else "my subreddits"
  48     return render_template('reddit.html.j2', title=title, rows=videos,
  49         subreddits=all_subreddits, before=before, after=after, count=count)
  50
  51 @frontend.route('/manage/subreddits')
  52 # disabled for guest user: @login_required
  53 def subscription_manager():
  54     token = getattr(current_user, 'token', 'guest')
  55     subreddits = get_subreddits(token)
  56     return render_template('subreddit_manager.html.j2', subreddits=subreddits)
  57
  58 @frontend.route('/manage/subreddits', methods=['POST'])
  59 @login_required
  60 def manage_subscriptions():
  61     token = current_user.token
  62     if 'subscribe' in request.form:
  63         subreddit = request.form.get("subscribe")
  64         match = re.search(r"(?:(?:https?://)?(?:old.|www.|\w\w.)?reddit.com)?(?:/?r/)?([-+_0-9A-Za-z]{2,21})", subreddit)
  65         if match:
  66             subreddit = match.group(1)
  67         else:
  68             flash("invalid subreddit", "error")
  69             return redirect(request.url, code=303)
  70         with sqlite3.connect(cf['global']['database']) as conn:
  71             c = conn.cursor()
  72             c.execute("""
  73                         INSERT OR IGNORE INTO subreddits (user, subreddit)
  74                         VALUES (?, ?)
  75             """, (token, subreddit))
  76
  77     elif 'unsubscribe' in request.form:
  78         subreddit = request.form.get("unsubscribe")
  79         with sqlite3.connect(cf['global']['database']) as conn:
  80             c = conn.cursor()
  81             c.execute("""
  82                         DELETE FROM subreddits
  83                         WHERE user = ? AND subreddit = ?
  84             """, (token, subreddit))
  85             # TODO: sql-error-handling, report success
  86
  87     else:
  88         flash("unsupported action", "error")
  89
  90     return redirect(request.url, code=303)
  91
  92 def get_subreddits(token):
  93     with sqlite3.connect(cf['global']['database']) as conn:
  94         c = conn.cursor()
  95         c.execute("""
  96           SELECT subreddit
  97             FROM subreddits
  98            WHERE user = ?
  99         ORDER BY subreddit COLLATE NOCASE ASC
 100         """, (token,))
 101         subreddits = [sr for (sr,) in c.fetchall()]
 102     return subreddits
 103
 104 @frontend.app_template_filter('trim3')
 105 def trim3(n):
 106     if type(n) != int:
 107         return n # not a number
 108     elif round(n, 1) >= 10_000:
 109         return "%.0fk" % (n/1000)
 110     elif n >= 1_000:
 111         return "%.1fk" % (n/1000)
 112     else:
 113         return "%d" % n
 114
 115 @frontend.before_app_request
 116 def inject_reddit_button():
 117     if not 'header_items' in g:
 118         g.header_items = []
 119     g.header_items.append({
 120         'name': 'reddit',
 121         'url': url_for('reddit.reddit'),
 122         'parent': frontend.name,
 123         'priority': 5
 124     })