"""统一收尾能力不足、资源缺失和动作修正失败"""

from app.processor.base import BaseNode
from app.processor.state import QueryState


class FallbackNode(BaseNode):
    name = "fallback_node"

    def process(self, state: QueryState) -> QueryState:
        updated_state: QueryState = state.copy()
        reason = state.get("failure_reason")
        if not reason:
            if state.get("validation_errors"):
                reason = f"动作校验未通过，已达到自动修正上限，共重试 {state.get('retry_count', 0)} 次"
            else:
                reason = "当前需求未能完成，缺少具体失败原因"

        # 失败动作仅保留作诊断，validation_passed=False 表示不可交付执行
        updated_state["status"] = "failed"
        updated_state["failure_reason"] = reason
        updated_state["validation_passed"] = False
        updated_state["simulated_screen"] = None
        return updated_state


if __name__ == "__main__":
    from app.schemas.action_validation import ActionValidationError

    state = {
        "request": {},
        "retry_count": 2,
        "actions": None,
        "validation_errors": [
            ActionValidationError(code="generation_error", message="动作生成失败")
        ],
    }
    node = FallbackNode()
    final_state = node.process(state)
    print(final_state)