add MoviePilot AI agent implementation and workflow manager

app/workflow/actions/send_event.py

@@ -0,0 +1,48 @@
+from app.workflow.actions import BaseAction
+from app.core.event import eventmanager
+from app.schemas import ActionParams, ActionContext
+from app.schemas.types import ChainEventType
+
+
+class SendEventParams(ActionParams):
+    """
+    发送事件参数
+    """
+    pass
+
+
+class SendEventAction(BaseAction):
+    """
+    发送事件
+    """
+
+    @classmethod
+    @property
+    def name(cls) -> str: # noqa
+        return "发送事件"
+
+    @classmethod
+    @property
+    def description(cls) -> str: # noqa
+        return "发送任务执行事件"
+
+    @classmethod
+    @property
+    def data(cls) -> dict: # noqa
+        return SendEventParams().dict()
+
+    @property
+    def success(self) -> bool:
+        return self.done
+
+    def execute(self, workflow_id: int, params: dict, context: ActionContext) -> ActionContext:
+        """
+        发送工作流事件，以更插件干预工作流执行
+        """
+        # 触发资源下载事件，更新执行上下文
+        event = eventmanager.send_event(ChainEventType.WorkflowExecution, context)
+        if event and event.event_data:
+            context = event.event_data
+
+        self.job_done()
+        return context