refactor: 命令基本完成

pkg/command/operators/resend.py

@@ -0,0 +1,34 @@
+from __future__ import annotations
+
+import typing
+
+from .. import operator, entities, cmdmgr, errors
+
+
+@operator.operator_class(
+    name="resend",
+    help="重发当前会话的最后一条消息",
+    usage='!resend'
+)
+class ResendOperator(operator.CommandOperator):
+
+    async def execute(
+        self,
+        context: entities.ExecuteContext
+    ) -> typing.AsyncGenerator[entities.CommandReturn, None]:
+        # 回滚到最后一条用户message前
+        if context.session.using_conversation is None:
+            yield entities.CommandReturn(error=errors.CommandError("当前没有对话"))
+        else:
+            conv_msg = context.session.using_conversation.messages
+            
+            # 倒序一直删到最后一条用户message
+            while len(conv_msg) > 0 and conv_msg[-1].role != 'user':
+                conv_msg.pop()
+
+            if len(conv_msg) > 0:
+                # 删除最后一条用户message
+                conv_msg.pop()
+
+            # 不重发了，提示用户已删除就行了
+            yield entities.CommandReturn(text="已删除最后一次请求记录")