h/plugins/urlhistory.py

96 lines
2.8 KiB
Python

import math
import re
import time
from util import hook, urlnorm, timesince
url_re = re.compile(r'([a-zA-Z]+://|www\.)[^ ]*')
expiration_period = 60 * 60 * 24 # 1 day
rate_limit_period = 60 * 3 # 3 minutes
rate_limit_count = 3
ignored_urls = [urlnorm.normalize("http://google.com")]
def db_connect(bot, server):
"check to see that our db has the the seen table and return a dbection."
db = bot.get_db_connection(server)
db.execute("create table if not exists urlhistory"
"(chan, url, nick, time)")
db.commit()
return db
def insert_history(db, chan, url, nick):
now = time.time()
db.execute("insert into urlhistory(chan, url, nick, time) "
"values(?,?,?,?)", (chan, url, nick, time.time()))
db.commit()
def get_history_duration(db, chan, url, duration):
db.execute("delete from urlhistory where time < ?",
(time.time() - duration,))
return db.execute("select nick, time from urlhistory where "
"chan=? and url=? order by time desc", (chan, url)).fetchall()
def get_history(db, chan, url):
return get_history_duration(db, chan, url, expiration_period)
def get_recent_links_count(db, chan, url):
return len(get_history_duration(db, chan, url, rate_limit_period))
def nicklist(nicks):
nicks = sorted(dict(nicks), key=unicode.lower)
if len(nicks) <= 2:
return ' and '.join(nicks)
else:
return ', and '.join((', '.join(nicks[:-1]), nicks[-1]))
def format_reply(history):
if not history:
return
last_nick, recent_time = history[0]
last_time = timesince.timesince(recent_time)
if len(history) == 1:
return "%s linked that %s ago." % (last_nick, last_time)
hour_span = math.ceil((time.time() - history[-1][1]) / 3600)
hour_span = '%.0f hours' % hour_span if hour_span > 1 else 'hour'
hlen = len(history)
ordinal = ["once", "twice", "%d times" % hlen][min(hlen, 3) - 1]
if len(dict(history)) == 1:
last = "last linked %s ago" % last_time
else:
last = "last linked by %s %s ago" % (last_nick, last_time)
return "that url has been posted %s in the past %s by %s (%s)." % (ordinal,
hour_span, nicklist(history), last)
@hook.command(hook=r'(.*)', prefix=False)
def urlinput(inp, nick='', chan='', server='', reply=None, bot=None):
m = url_re.search(inp.encode('utf8'))
if not m:
return
# URL detected
db = db_connect(bot, server)
url = urlnorm.normalize(m.group(0))
if url not in ignored_urls:
history = get_history(db, chan, url)
recent_history = get_recent_links_count(db, chan, url)
insert_history(db, chan, url, nick)
if nick not in dict(history) and recent_history < rate_limit_count:
return format_reply(history)