1 files changed, 97 insertions, 0 deletions
diff --git a/hydroroll/utils.py b/hydroroll/utils.py
new file mode 100644
index 0000000..b4dbab6
--- /dev/null
+++ b/hydroroll/utils.py
@@ -0,0 +1,97 @@
+import re
+from abc import ABC, abstractmethod
+from typing import Type, Union, Generic, TypeVar
+from iamai import Plugin
+from iamai.typing import T_State
+from iamai.adapter.cqhttp.event import GroupMessageEvent, PrivateMessageEvent
+
+from .config import BasePluginConfig, RegexPluginConfig, CommandPluginConfig
+
+T_Config = TypeVar("T_Config", bound=BasePluginConfig)
+T_RegexPluginConfig = TypeVar("T_RegexPluginConfig", bound=RegexPluginConfig)
+T_CommandPluginConfig = TypeVar("T_CommandPluginConfig", bound=CommandPluginConfig)
+
+class BasePlugin(
+    Plugin[Union[PrivateMessageEvent, GroupMessageEvent], T_State, T_Config],
+    ABC,
+    Generic[T_State, T_Config],
+):
+    Config: Type[T_Config] = BasePluginConfig
+
+    def format_str(self, format_str: str, message_str: str = "") -> str:
+        return format_str.format(
+            message=message_str,
+            user_name=self.event.sender.nickname,
+            user_id=self.event.sender.user_id,
+        )
+
+    async def rule(self) -> bool:
+        is_bot_off = False
+        
+        if self.event.adapter.name != "cqhttp":
+            return False
+        if self.event.type != "message":
+            return False
+        match_str = self.event.message.get_plain_text()
+        if is_bot_off:
+            if self.event.message.startswith(f'[CQ:at,qq={self.event.self_id}]'):
+                match_str = re.sub(fr'^\[CQ:at,qq={self.event.self_id}\]', '', match_str)
+            elif self.event.message.startswith(f'[CQ:at,qq={self.event.self_tiny_id}]'):
+                match_str = re.sub(fr'^\[CQ:at,qq={self.event.self_tiny_id}\]', '', match_str)
+            else:
+                return False
+        if self.config.handle_all_message:
+            return self.str_match(match_str)
+        elif self.config.handle_friend_message:
+            if self.event.message_type == "private":
+                return self.str_match(match_str)
+        elif self.config.handle_group_message:
+            if self.event.message_type == "group":
+                if (
+                    self.config.accept_group is None
+                    or self.event.group_id in self.config.accept_group
+                ):
+                    return self.str_match(match_str)
+        elif self.config.handle_group_message:
+            if self.event.message_type == "guild":
+                return self.str_match(match_str)
+        return False
+
+    @abstractmethod
+    def str_match(self, msg_str: str) -> bool:
+        raise NotImplemented
+
+
+class RegexPluginBase(BasePlugin[T_State, T_RegexPluginConfig], ABC):
+    msg_match: re.Match
+    re_pattern: re.Pattern
+    Config: Type[T_RegexPluginConfig] = RegexPluginConfig
+
+    def str_match(self, msg_str: str) -> bool:
+        msg_str = msg_str.strip()
+        self.msg_match = self.re_pattern.fullmatch(msg_str)
+        return bool(self.msg_match)
+
+
+class CommandPluginBase(RegexPluginBase[T_State, T_CommandPluginConfig], ABC):
+    command_match: re.Match
+    command_re_pattern: re.Pattern
+    Config: Type[T_CommandPluginConfig] = CommandPluginConfig
+
+    def str_match(self, msg_str: str) -> bool:
+        if not hasattr(self, "command_re_pattern"):
+            self.command_re_pattern = re.compile(
+                f'({"|".join(self.config.command_prefix)})'
+                f'({"|".join(self.config.command)})'
+                r"\s*(?P<command_args>.*)",
+                flags=re.I if self.config.ignore_case else 0,
+            )
+        msg_str = msg_str.strip()
+        self.command_match = self.command_re_pattern.fullmatch(msg_str)
+        if not self.command_match:
+            return False
+        self.msg_match = self.re_pattern.fullmatch(
+            self.command_match.group("command_args")
+        )
+        return bool(self.msg_match)
+