Add NLP

none/__init__.py

@@ -75,6 +75,7 @@ def load_builtin_plugins():
 
 
 from .command import on_command, CommandSession, CommandGroup
+from .natural_language import on_natural_language, NLPSession, NLPResult
 from .notice_request import (
     on_notice, NoticeSession,
     on_request, RequestSession,

none/command.py

@@ -29,7 +29,7 @@ _sessions = {}
 class Command:
     __slots__ = ('name', 'func', 'permission', 'only_to_me', 'args_parser_func')
 
-    def __init__(self, name: Tuple[str], func: Callable, permission: int, *,
+    def __init__(self, *, name: Tuple[str], func: Callable, permission: int,
                  only_to_me: bool):
         self.name = name
         self.func = func
@@ -79,11 +79,11 @@ def on_command(name: Union[str, Tuple[str]], *,
         for alias in aliases:
             _aliases[alias] = cmd_name
 
-        def args_parser(parser_func: Callable):
+        def args_parser_deco(parser_func: Callable):
             cmd.args_parser_func = parser_func
             return parser_func
 
-        func.args_parser = args_parser
+        func.args_parser = args_parser_deco
         return func
 
     return deco
@@ -156,10 +156,10 @@ class CommandSession(BaseSession):
         super().__init__(bot, ctx)
         self.cmd = cmd
         self.current_key = None
-        self.current_arg = current_arg
-        self.current_arg_text = Message(current_arg).extract_plain_text()
-        self.current_arg_images = [s.data['url'] for s in ctx['message']
-                                   if s.type == 'image' and 'url' in s.data]
+        self.current_arg = None
+        self.current_arg_text = None
+        self.current_arg_images = None
+        self.refresh(ctx, current_arg=current_arg)
         self.args = args or {}
         self.last_interaction = None
 
@@ -172,8 +172,9 @@ class CommandSession(BaseSession):
         """
         self.ctx = ctx
         self.current_arg = current_arg
-        self.current_arg_text = Message(current_arg).extract_plain_text()
-        self.current_arg_images = [s.data['url'] for s in ctx['message']
+        current_arg_as_msg = Message(current_arg)
+        self.current_arg_text = current_arg_as_msg.extract_plain_text()
+        self.current_arg_images = [s.data['url'] for s in current_arg_as_msg
                                    if s.type == 'image' and 'url' in s.data]
 
     @property
@@ -185,37 +186,38 @@ class CommandSession(BaseSession):
             return False
         return True
 
-    def require_arg(self, key: str, prompt: str = None, *,
-                    prompt_expr: Union[str, Sequence[str], Callable] = None,
-                    interactive: bool = True) -> Any:
+    def get(self, key: str, *, prompt: str = None,
+            prompt_expr: Union[str, Sequence[str], Callable] = None) -> Any:
         """
         Get an argument with a given key.
 
-        If "interactive" is True, and the argument does not exist
-        in the current session, a FurtherInteractionNeeded exception
-        will be raised, and the caller of the command will know
-        it should keep the session for further interaction with the user.
-
-        If "interactive" is False, missed key will cause a result of None.
+        If the argument does not exist in the current session,
+        a FurtherInteractionNeeded exception will be raised,
+        and the caller of the command will know it should keep
+        the session for further interaction with the user.
 
         :param key: argument key
         :param prompt: prompt to ask the user
         :param prompt_expr: prompt expression to ask the user
-        :param interactive: should enter interactive mode while key missing
         :return: the argument value
         :raise FurtherInteractionNeeded: further interaction is needed
         """
-        value = self.args.get(key)
-        if value is not None or not interactive:
+        value = self.get_optional(key)
+        if value is not None:
             return value
 
         self.current_key = key
         # ask the user for more information
         if prompt_expr is not None:
             prompt = render(prompt_expr, key=key)
+        if prompt:
             asyncio.ensure_future(self.send(prompt))
         raise _FurtherInteractionNeeded
 
+    def get_optional(self, key: str,
+                     default: Optional[Any] = None) -> Optional[Any]:
+        return self.args.get(key, default)
+
 
 def _new_command_session(bot: CQHttp,
                          ctx: Dict[str, Any]) -> Optional[CommandSession]:
@@ -301,12 +303,40 @@ async def handle_command(bot: CQHttp, ctx: Dict[str, Any]) -> bool:
         session = _new_command_session(bot, ctx)
         if not session:
             return False
-        _sessions[src] = session
 
+    return await _real_run_command(session, src, check_perm=check_perm)
+
+
+async def call_command(bot: CQHttp, ctx: Dict[str, Any],
+                       name: Union[str, Tuple[str]],
+                       args: Dict[str, Any]) -> bool:
+    """
+    Call a command internally.
+
+    This function is typically called by some other commands
+    or "handle_natural_language" when handling NLPResult object.
+
+    :param bot: CQHttp instance
+    :param ctx: message context
+    :param name: command name
+    :param args: command args
+    :return: the command is successfully called
+    """
+    cmd = _find_command(name)
+    if not cmd:
+        return False
+    session = CommandSession(bot, ctx, cmd, args=args)
+    return await _real_run_command(session, context_source(session.ctx),
+                                   check_perm=False)
+
+
+async def _real_run_command(session: CommandSession,
+                            ctx_src: str, **kwargs) -> bool:
+    _sessions[ctx_src] = session
     try:
-        res = await session.cmd.run(session, check_perm=check_perm)
+        res = await session.cmd.run(session, **kwargs)
         # the command is finished, remove the session
-        del _sessions[src]
+        del _sessions[ctx_src]
         return res
     except _FurtherInteractionNeeded:
         session.last_interaction = datetime.now()

none/default_config.py

@@ -8,6 +8,7 @@ PORT = 8080
 DEBUG = True
 
 SUPERUSERS = set()
+NICKNAME = ''
 COMMAND_START = {'/', '!', '／', '！'}
 COMMAND_SEP = {'/', '.'}
 SESSION_EXPIRE_TIMEOUT = timedelta(minutes=5)

none/natural_language.py

@@ -1,14 +1,56 @@
+import re
+import asyncio
 from collections import namedtuple
-from typing import Dict, Any
+from typing import Dict, Any, Iterable, Optional, Callable, Union
 
 from aiocqhttp import CQHttp
+from aiocqhttp.message import Message
+
+from . import permission as perm
+from .session import BaseSession
+from .command import call_command
+from .log import logger
 
 _nl_processors = set()
 
 
 class NLProcessor:
-    __slots__ = ('func', 'permission', 'only_to_me', 'keywords',
-                 'precondition_func')
+    __slots__ = ('func', 'keywords', 'permission', 'only_to_me')
+
+    def __init__(self, *, func: Callable, keywords: Optional[Iterable],
+                 permission: int, only_to_me: bool):
+        self.func = func
+        self.keywords = keywords
+        self.permission = permission
+        self.only_to_me = only_to_me
+
+
+def on_natural_language(keywords: Union[Optional[Iterable], Callable] = None, *,
+                        permission: int = perm.EVERYBODY,
+                        only_to_me: bool = True) -> Callable:
+    def deco(func: Callable) -> Callable:
+        nl_processor = NLProcessor(func=func, keywords=keywords,
+                                   permission=permission, only_to_me=only_to_me)
+        _nl_processors.add(nl_processor)
+        return func
+
+    if isinstance(keywords, Callable):
+        # here "keywords" is the function to be decorated
+        return on_natural_language()(keywords)
+    else:
+        return deco
+
+
+class NLPSession(BaseSession):
+    __slots__ = ('msg', 'msg_text', 'msg_images')
+
+    def __init__(self, bot: CQHttp, ctx: Dict[str, Any], msg: str):
+        super().__init__(bot, ctx)
+        self.msg = msg
+        tmp_msg = Message(msg)
+        self.msg_text = tmp_msg.extract_plain_text()
+        self.msg_images = [s.data['url'] for s in tmp_msg
+                           if s.type == 'image' and 'url' in s.data]
 
 
 NLPResult = namedtuple('NLPResult', (
@@ -18,5 +60,36 @@ NLPResult = namedtuple('NLPResult', (
 ))
 
 
-async def handle_natural_language(bot: CQHttp, ctx: Dict[str, Any]) -> None:
-    pass
+async def handle_natural_language(bot: CQHttp, ctx: Dict[str, Any]) -> bool:
+    msg = str(ctx['message'])
+    if bot.config.NICKNAME:
+        m = re.search(rf'^{bot.config.NICKNAME}[\s,，]+', msg)
+        if m:
+            ctx['to_me'] = True
+            msg = msg[m.end():]
+    session = NLPSession(bot, ctx, msg)
+
+    coros = []
+    for p in _nl_processors:
+        should_run = await perm.check_permission(bot, ctx, p.permission)
+        if should_run and p.keywords:
+            for kw in p.keywords:
+                if kw in session.msg_text:
+                    break
+            else:
+                # no keyword matches
+                should_run = False
+        if should_run and p.only_to_me and not ctx['to_me']:
+            should_run = False
+
+        if should_run:
+            coros.append(p.func(session))
+
+    if coros:
+        results = sorted(filter(lambda r: r, await asyncio.gather(*coros)),
+                         key=lambda r: r.confidence, reverse=True)
+        logger.debug(results)
+        if results and results[0].confidence >= 60.0:
+            return await call_command(bot, ctx,
+                                      results[0].cmd_name, results[0].cmd_args)
+    return False

none/plugins/base.py

@@ -5,10 +5,10 @@ from none import on_command, CommandSession, permission as perm
 
 @on_command('echo', only_to_me=False)
 async def echo(session: CommandSession):
-    await session.send(session.args.get('message') or session.current_arg)
+    await session.send(session.get_optional('message') or session.current_arg)
 
 
 @on_command('say', permission=perm.SUPERUSER, only_to_me=False)
 async def _(session: CommandSession):
     await session.send(
-        unescape(session.args.get('message') or session.current_arg))
+        unescape(session.get_optional('message') or session.current_arg))

none_demo/config.py

@@ -6,5 +6,6 @@ HOST = '0.0.0.0'
 SECRET = 'abc'
 
 SUPERUSERS = {1002647525}
+NICKNAME = '奶茶'
 COMMAND_START = {'', '/', '!', '／', '！', re.compile(r'^>+\s*')}
 COMMAND_SEP = {'/', '.', re.compile(r'#|::?')}

none_demo/plugins/tuling.py

@@ -0,0 +1,37 @@
+import asyncio
+
+from none import (
+    on_command, CommandSession,
+    on_natural_language, NLPSession, NLPResult
+)
+
+
+@on_command('tuling', aliases=('聊天', '对话'))
+async def tuling(session: CommandSession):
+    message = session.get('message', prompt='我已经准备好啦，来跟我聊天吧~')
+
+    finish = message in ('结束', '拜拜', '再见')
+    if finish:
+        asyncio.ensure_future(session.send('拜拜啦，你忙吧，下次想聊天随时找我哦~'))
+        return
+
+    # call tuling api
+    reply = f'你说了：{message}'
+
+    one_time = session.get_optional('one_time', False)
+    if one_time:
+        asyncio.ensure_future(session.send(reply))
+    else:
+        del session.args['message']
+        session.get('message', prompt=reply)
+
+
+@tuling.args_parser
+async def _(session: CommandSession):
+    if session.current_key == 'message':
+        session.args[session.current_key] = session.current_arg_text.strip()
+
+
+@on_natural_language
+async def _(session: NLPSession):
+    return NLPResult(60.0, 'tuling', {'message': session.msg, 'one_time': True})

none_demo/plugins/weather/__init__.py

@@ -1,4 +1,7 @@
-from none import CommandSession, CommandGroup
+from none import (
+    CommandSession, CommandGroup,
+    on_natural_language, NLPSession, NLPResult
+)
 
 from . import expressions as expr
 
@@ -7,34 +10,24 @@ w = CommandGroup('weather')
 
 @w.command('weather', aliases=('天气', '天气预报'))
 async def weather(session: CommandSession):
-    city = session.require_arg('city', prompt_expr=expr.WHICH_CITY)
+    city = session.get('city', prompt_expr=expr.WHICH_CITY)
     await session.send_expr(expr.REPORT, city=city)
 
 
 @weather.args_parser
 async def _(session: CommandSession):
+    striped_arg = session.current_arg_text.strip()
     if session.current_key:
-        session.args[session.current_key] = session.current_arg_text.strip()
+        session.args[session.current_key] = striped_arg
+    elif striped_arg:
+        session.args['city'] = striped_arg
 
 
-# @on_natural_language(keywords={'天气', '雨', '雪', '晴', '阴', '多云', '冰雹'},
-#                      only_to_me=False)
-# async def weather_nlp(session: NaturalLanguageSession):
-#     return NLPResult(89.5, ('weather', 'weather'), {'city': '南京'})
-#
-#
-# @weather_nlp.condition
-# async def _(session: NaturalLanguageSession):
-#     keywords = {'天气', '雨', '雪', '晴', '阴', '多云', '冰雹'}
-#     for kw in keywords:
-#         if kw in session.text:
-#             keyword_hit = True
-#             break
-#     else:
-#         keyword_hit = False
-#     if session.ctx['to_me'] and keyword_hit:
-#         return True
-#     return False
+@on_natural_language({'天气', '雨', '雪', '晴', '阴'}, only_to_me=False)
+async def _(session: NLPSession):
+    if not ('?' in session.msg_text or '？' in session.msg_text):
+        return None
+    return NLPResult(90.0, ('weather', 'weather'), {})
 
 
 @w.command('suggestion', aliases=('生活指数', '生活建议', '生活提示'))