mirror of
https://github.com/nonebot/nonebot2.git
synced 2024-11-24 17:15:05 +08:00
274 lines
8.4 KiB
Python
274 lines
8.4 KiB
Python
#!/usr/bin/env python3
|
||
# -*- coding: utf-8 -*-
|
||
|
||
from nonebot.log import logger
|
||
import typing
|
||
import inspect
|
||
from functools import wraps
|
||
from datetime import datetime
|
||
from collections import defaultdict
|
||
from contextvars import Context, ContextVar, copy_context
|
||
|
||
from nonebot.rule import Rule
|
||
from nonebot.permission import Permission, USER
|
||
from nonebot.typing import Type, List, Dict, Union, Callable, Optional, NoReturn
|
||
from nonebot.typing import Bot, Event, Handler, Message, ArgsParser, MessageSegment
|
||
from nonebot.exception import PausedException, RejectedException, FinishedException
|
||
|
||
matchers: Dict[int, List[Type["Matcher"]]] = defaultdict(list)
|
||
current_bot: ContextVar = ContextVar("current_bot")
|
||
current_event: ContextVar = ContextVar("current_event")
|
||
|
||
|
||
class MatcherMeta(type):
|
||
|
||
def __repr__(self) -> str:
|
||
return (f"<Matcher from {self.module or 'unknow'}, " # type: ignore
|
||
f"type={self.type}, priority={self.priority}, " # type: ignore
|
||
f"temp={self.temp}>") # type: ignore
|
||
|
||
def __str__(self) -> str:
|
||
return repr(self)
|
||
|
||
|
||
class Matcher(metaclass=MatcherMeta):
|
||
"""`Matcher`类
|
||
"""
|
||
module: Optional[str] = None
|
||
|
||
type: str = ""
|
||
rule: Rule = Rule()
|
||
permission: Permission = Permission()
|
||
handlers: List[Handler] = []
|
||
temp: bool = False
|
||
expire_time: Optional[datetime] = None
|
||
priority: int = 1
|
||
block: bool = False
|
||
|
||
_default_state: dict = {}
|
||
|
||
_default_parser: Optional[ArgsParser] = None
|
||
|
||
def __init__(self):
|
||
"""实例化 Matcher 以便运行
|
||
"""
|
||
self.handlers = self.handlers.copy()
|
||
self.state = self._default_state.copy()
|
||
|
||
def __repr__(self) -> str:
|
||
return (f"<Matcher from {self.module or 'unknow'}, type={self.type}, "
|
||
f"priority={self.priority}, temp={self.temp}>")
|
||
|
||
def __str__(self) -> str:
|
||
return self.__repr__()
|
||
|
||
@classmethod
|
||
def new(cls,
|
||
type_: str = "",
|
||
rule: Rule = Rule(),
|
||
permission: Permission = Permission(),
|
||
handlers: Optional[list] = None,
|
||
temp: bool = False,
|
||
priority: int = 1,
|
||
block: bool = False,
|
||
*,
|
||
module: Optional[str] = None,
|
||
default_state: Optional[dict] = None,
|
||
expire_time: Optional[datetime] = None) -> Type["Matcher"]:
|
||
"""创建新的 Matcher
|
||
|
||
Returns:
|
||
Type["Matcher"]: 新的 Matcher 类
|
||
"""
|
||
|
||
NewMatcher = type(
|
||
"Matcher", (Matcher,), {
|
||
"module": module,
|
||
"type": type_,
|
||
"rule": rule,
|
||
"permission": permission,
|
||
"handlers": handlers or [],
|
||
"temp": temp,
|
||
"expire_time": expire_time,
|
||
"priority": priority,
|
||
"block": block,
|
||
"_default_state": default_state or {}
|
||
})
|
||
|
||
matchers[priority].append(NewMatcher)
|
||
|
||
return NewMatcher
|
||
|
||
@classmethod
|
||
async def check_perm(cls, bot: Bot, event: Event) -> bool:
|
||
return (event.type == (cls.type or event.type) and
|
||
await cls.permission(bot, event))
|
||
|
||
@classmethod
|
||
async def check_rule(cls, bot: Bot, event: Event, state: dict) -> bool:
|
||
"""检查 Matcher 的 Rule 是否成立
|
||
|
||
Args:
|
||
event (Event): 消息事件
|
||
|
||
Returns:
|
||
bool: 条件成立与否
|
||
"""
|
||
return await cls.rule(bot, event, state)
|
||
|
||
@classmethod
|
||
def args_parser(cls, func: ArgsParser) -> ArgsParser:
|
||
cls._default_parser = func
|
||
return func
|
||
|
||
@classmethod
|
||
def handle(cls) -> Callable[[Handler], Handler]:
|
||
"""直接处理消息事件"""
|
||
|
||
def _decorator(func: Handler) -> Handler:
|
||
cls.handlers.append(func)
|
||
return func
|
||
|
||
return _decorator
|
||
|
||
@classmethod
|
||
def receive(cls) -> Callable[[Handler], Handler]:
|
||
"""接收一条新消息并处理"""
|
||
|
||
async def _receive(bot: Bot, event: Event, state: dict) -> NoReturn:
|
||
raise PausedException
|
||
|
||
if cls.handlers:
|
||
# 已有前置handlers则接受一条新的消息，否则视为接收初始消息
|
||
cls.handlers.append(_receive)
|
||
|
||
def _decorator(func: Handler) -> Handler:
|
||
if not cls.handlers or cls.handlers[-1] is not func:
|
||
cls.handlers.append(func)
|
||
|
||
return func
|
||
|
||
return _decorator
|
||
|
||
@classmethod
|
||
def got(
|
||
cls,
|
||
key: str,
|
||
prompt: Optional[str] = None,
|
||
args_parser: Optional[ArgsParser] = None
|
||
) -> Callable[[Handler], Handler]:
|
||
|
||
async def _key_getter(bot: Bot, event: Event, state: dict):
|
||
if key not in state:
|
||
state["_current_key"] = key
|
||
if prompt:
|
||
await bot.send(event=event, message=prompt)
|
||
raise PausedException
|
||
|
||
async def _key_parser(bot: Bot, event: Event, state: dict):
|
||
if key in state:
|
||
return
|
||
parser = args_parser or cls._default_parser
|
||
if parser:
|
||
await parser(bot, event, state)
|
||
else:
|
||
state[state["_current_key"]] = str(event.message)
|
||
|
||
cls.handlers.append(_key_getter)
|
||
cls.handlers.append(_key_parser)
|
||
|
||
def _decorator(func: Handler) -> Handler:
|
||
if not hasattr(cls.handlers[-1], "__wrapped__"):
|
||
parser = cls.handlers.pop()
|
||
|
||
@wraps(func)
|
||
async def wrapper(bot: Bot, event: Event, state: dict):
|
||
await parser(bot, event, state)
|
||
await func(bot, event, state)
|
||
|
||
cls.handlers.append(wrapper)
|
||
|
||
return func
|
||
|
||
return _decorator
|
||
|
||
@classmethod
|
||
async def finish(
|
||
cls,
|
||
prompt: Optional[Union[str, Message,
|
||
MessageSegment]] = None) -> NoReturn:
|
||
bot: Bot = current_bot.get()
|
||
event: Event = current_event.get()
|
||
if prompt:
|
||
await bot.send(event=event, message=prompt)
|
||
raise FinishedException
|
||
|
||
@classmethod
|
||
async def pause(
|
||
cls,
|
||
prompt: Optional[Union[str, Message,
|
||
MessageSegment]] = None) -> NoReturn:
|
||
bot: Bot = current_bot.get()
|
||
event: Event = current_event.get()
|
||
if prompt:
|
||
await bot.send(event=event, message=prompt)
|
||
raise PausedException
|
||
|
||
@classmethod
|
||
async def reject(
|
||
cls,
|
||
prompt: Optional[Union[str, Message,
|
||
MessageSegment]] = None) -> NoReturn:
|
||
bot: Bot = current_bot.get()
|
||
event: Event = current_event.get()
|
||
if prompt:
|
||
await bot.send(event=event, message=prompt)
|
||
raise RejectedException
|
||
|
||
# 运行handlers
|
||
async def run(self, bot: Bot, event: Event, state: dict):
|
||
b_t = current_bot.set(bot)
|
||
e_t = current_event.set(event)
|
||
try:
|
||
# Refresh preprocess state
|
||
self.state.update(state)
|
||
|
||
for _ in range(len(self.handlers)):
|
||
handler = self.handlers.pop(0)
|
||
annotation = typing.get_type_hints(handler)
|
||
BotType = annotation.get("bot")
|
||
if BotType and inspect.isclass(BotType) and not isinstance(
|
||
bot, BotType):
|
||
continue
|
||
await handler(bot, event, self.state)
|
||
|
||
except RejectedException:
|
||
self.handlers.insert(0, handler) # type: ignore
|
||
Matcher.new(
|
||
self.type,
|
||
Rule(),
|
||
USER(event.user_id, perm=self.permission), # type:ignore
|
||
self.handlers,
|
||
temp=True,
|
||
priority=0,
|
||
block=True,
|
||
default_state=self.state,
|
||
expire_time=datetime.now() + bot.config.session_expire_timeout)
|
||
except PausedException:
|
||
Matcher.new(
|
||
self.type,
|
||
Rule(),
|
||
USER(event.user_id, perm=self.permission), # type:ignore
|
||
self.handlers,
|
||
temp=True,
|
||
priority=0,
|
||
block=True,
|
||
default_state=self.state,
|
||
expire_time=datetime.now() + bot.config.session_expire_timeout)
|
||
except FinishedException:
|
||
pass
|
||
finally:
|
||
logger.info(f"Matcher {self} running complete")
|
||
current_bot.reset(b_t)
|
||
current_event.reset(e_t)
|