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import time, typing, uuid
from src import Database, EventManager, Logging
class Timer(object):
def __init__(self, id: str, context: typing.Optional[str], name: str,
delay: float, next_due: typing.Optional[float], kwargs: dict):
self.id = id
self.context = context
self.name = name
self.delay = delay
if next_due:
self.next_due = next_due
else:
self.set_next_due()
self.kwargs = kwargs
self._done = False
def set_next_due(self):
self.next_due = time.time()+self.delay
def due(self) -> bool:
return self.time_left() <= 0
def time_left(self) -> float:
return self.next_due-time.time()
def redo(self):
self._done = False
self.set_next_due()
def finish(self):
self._done = True
def done(self) -> bool:
return self._done
class Timers(object):
def __init__(self, database: Database.Database,
events: EventManager.Events,
log: Logging.Log):
self.database = database
self.events = events
self.log = log
self.timers = [] # type: typing.List[Timer]
self.context_timers = {} # type: typing.Dict[str, typing.List[Timer]]
def new_context(self, context: str) -> "TimersContext":
return TimersContext(self, context)
def setup(self, timers: typing.List[typing.Tuple[str, dict]]):
for name, timer in timers:
id = name.split("timer-", 1)[1]
self._add(None, timer["name"], timer["delay"], timer[
"next-due"], id, False, timer["kwargs"])
def _persist(self, timer: Timer):
self.database.bot_settings.set("timer-%s" % timer.id, {
"name": timer.name, "delay": timer.delay,
"next-due": timer.next_due, "kwargs": timer.kwargs})
def _remove(self, timer: Timer):
if timer.context:
self.context_timers[timer.context].remove(timer)
if not self.context_timers[timer.context]:
del self.context_timers[timer.context]
else:
self.timers.remove(timer)
self.database.bot_settings.delete("timer-%s" % timer.id)
def add(self, name: str, delay: float, next_due: float=None, **kwargs):
self._add(None, name, delay, next_due, None, False, kwargs)
def add_persistent(self, name: str, delay: float, next_due: float=None,
**kwargs):
self._add(None, name, delay, next_due, None, True, kwargs)
def _add(self, context: typing.Optional[str], name: str, delay: float,
next_due: typing.Optional[float], id: typing.Optional[str],
persist: bool, kwargs: dict):
id = id or str(uuid.uuid4())
timer = Timer(id, context, name, delay, next_due, kwargs)
if persist:
self._persist(timer)
if context and not persist:
if not context in self.context_timers:
self.context_timers[context] = []
self.context_timers[context].append(timer)
else:
self.timers.append(timer)
def next(self) -> typing.Optional[float]:
times = list(filter(None,
[timer.time_left() for timer in self.get_timers()]))
if not times:
return None
return max(min(times), 0)
def get_timers(self) -> typing.List[Timer]:
return self.timers + sum(self.context_timers.values(), [])
def find_all(self, name: str) -> typing.List[Timer]:
name_lower = name.lower()
timers = self.get_timers()
found = [] # type: typing.List[Timer]
for timer in timers:
if timer.name.lower() == name_lower:
found.append(timer)
return found
def call(self):
for timer in self.get_timers():
if timer.due():
timer.finish()
self.events.on("timer.%s" % timer.name).call(timer=timer,
**timer.kwargs)
if timer.done():
self._remove(timer)
def purge_context(self, context: str):
if context in self.context_timers:
del self.context_timers[context]
class TimersContext(object):
def __init__(self, parent: Timers, context: str):
self._parent = parent
self.context = context
def add(self, name: str, delay: float, next_due: float=None,
**kwargs):
self._parent._add(self.context, name, delay, next_due, None, False,
kwargs)
def add_persistent(self, name: str, delay: float, next_due: float=None,
**kwargs):
self._parent._add(None, name, delay, next_due, None, True,
kwargs)
def find_all(self, name: str) -> typing.List[Timer]:
return self._parent.find_all(name)
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