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