完善文档、清理垃圾、添加 Travis CI 配置文件

filters/_frequency_limiter.py

@@ -1,39 +0,0 @@
-from datetime import datetime, timedelta
-
-from cachetools import TTLCache as TTLDict
-
-from filter import add_filter
-from little_shit import get_target
-from commands import core
-
-_freq_count = TTLDict(maxsize=10000, ttl=2 * 60 * 60)
-_max_message_count_per_hour = 120
-
-
-def _limiter(ctx_msg):
-    target = get_target(ctx_msg)
-    if target not in _freq_count:
-        # First message of this target in 2 hours (_freq_count's ttl)
-        _freq_count[target] = (0, datetime.now())
-
-    count, last_check_dt = _freq_count[target]
-    now_dt = datetime.now()
-    delta = now_dt - last_check_dt
-
-    if delta >= timedelta(hours=1):
-        count = 0
-        last_check_dt = now_dt
-
-    if count >= _max_message_count_per_hour:
-        # Too many messages in this hour
-        core.echo('我们聊天太频繁啦，休息一会儿再聊吧～', ctx_msg)
-        count = -1
-
-    if count >= 0:
-        count += 1
-
-    _freq_count[target] = (count, last_check_dt)
-    return count >= 0
-
-
-add_filter(_limiter, 100)