refactor: 命令基本完成

pkg/command/operators/next.py

@@ -0,0 +1,35 @@
+from __future__ import annotations
+
+import typing
+import datetime
+
+from .. import operator, entities, cmdmgr, errors
+
+
+@operator.operator_class(
+    name="next",
+    help="切换到后一个对话",
+    usage='!next'
+)
+class NextOperator(operator.CommandOperator):
+
+    async def execute(
+        self,
+        context: entities.ExecuteContext
+    ) -> typing.AsyncGenerator[entities.CommandReturn, None]:
+        
+        if context.session.conversations:
+            # 找到当前会话的下一个会话
+            for index in range(len(context.session.conversations)):
+                if context.session.conversations[index] == context.session.using_conversation:
+                    if index == len(context.session.conversations)-1:
+                        yield entities.CommandReturn(error=errors.CommandOperationError('已经是最后一个对话了'))
+                        return
+                    else:
+                        context.session.using_conversation = context.session.conversations[index+1]
+                        time_str = context.session.using_conversation.create_time.strftime("%Y-%m-%d %H:%M:%S")
+
+                        yield entities.CommandReturn(text=f"已切换到后一个对话: {index} {time_str}: {context.session.using_conversation.messages[0].content}")
+                        return
+        else:
+            yield entities.CommandReturn(error=errors.CommandOperationError('当前没有对话'))