chore: import private baseline from gitea state

plugin-templates/MaiBot-Napcat-Adapter/codecs/outbound/message_codec.py

@@ -0,0 +1,63 @@
+"""NapCat 出站消息编解码。"""
+
+from __future__ import annotations
+
+from typing import Any, Dict, Mapping, Tuple
+
+from .segment_encoder import NapCatOutboundSegmentEncoder
+
+
+class NapCatOutboundCodec:
+    """NapCat 出站消息编码器。"""
+
+    def __init__(self) -> None:
+        """初始化出站消息编码器。"""
+        self._segment_encoder = NapCatOutboundSegmentEncoder()
+
+    def build_outbound_action(
+        self,
+        message: Mapping[str, Any],
+        route: Mapping[str, Any],
+    ) -> Tuple[str, Dict[str, Any]]:
+        """为 Host 出站消息构造 OneBot 动作。
+
+        Args:
+            message: Host 侧标准 ``MessageDict``。
+            route: Platform IO 路由信息。
+
+        Returns:
+            Tuple[str, Dict[str, Any]]: 动作名称与参数字典。
+
+        Raises:
+            ValueError: 当私聊出站缺少目标用户 ID 时抛出。
+        """
+        message_info = message.get("message_info", {})
+        if not isinstance(message_info, Mapping):
+            message_info = {}
+
+        group_info = message_info.get("group_info", {})
+        if not isinstance(group_info, Mapping):
+            group_info = {}
+
+        additional_config = message_info.get("additional_config", {})
+        if not isinstance(additional_config, Mapping):
+            additional_config = {}
+
+        raw_message = message.get("raw_message", [])
+        segments = self._segment_encoder.convert_segments(raw_message)
+
+        if target_group_id := str(
+            group_info.get("group_id") or additional_config.get("platform_io_target_group_id") or ""
+        ).strip():
+            return "send_group_msg", {"group_id": target_group_id, "message": segments}
+
+        target_user_id = str(
+            additional_config.get("platform_io_target_user_id")
+            or additional_config.get("target_user_id")
+            or route.get("target_user_id")
+            or ""
+        ).strip()
+        if not target_user_id:
+            raise ValueError("Outbound private message is missing target_user_id")
+
+        return "send_private_msg", {"message": segments, "user_id": target_user_id}