from typing import Dict, Any
import os
from flow_modules.aiflows.PlanWriterFlowModule import PlanWriterFlow
from aiflows.base_flows import CircularFlow

class Planner_JarvisFlow(PlanWriterFlow):
    """This flow inherits from PlanWriterFlow (https://huggingface.co/aiflows/PlanWriterFlowModule), and is used to generate a plan for Jarvis.
    *Input Interface*:
    - `goal` (str): the goal of the planner, the goal comes from the user's query when calling Jarvis.
    - `memory_files` (dict): a dictionary of memory files, the keys are the names of the memory files, the values are the locations of the memory files.

    *Output Interfaces*:
    - `plan` (str): the generated plan, the plan string will be written to the plan file and returned to the flow state of the Jarvis flow.
    - `summary` (str): the summary of the planner.
    - `status` (str): the status of the planner, can be "finished" or "unfinished".

    *Configuration Parameters*:
    - Also refer to PlanWriterFlow (https://huggingface.co/aiflows/PlanWriterFlowModule/blob/main/PlanWriterFlow.py) for more configuration parameters.
    - `input_interface`: the input interface of the flow.
    - `output_interface`: the output interface of the flow.
    - `subflows_config`: the configuration of the subflows of the flow.
    - `early_exit_key`: the key of the early exit signal in the output payload.
    - `topology`: the topology of the subflows.

    """
    @CircularFlow.output_msg_payload_processor
    def detect_finish_or_continue(self, output_payload: Dict[str, Any], src_flow) -> Dict[str, Any]:
        """This function is used to detect whether the planner should finish or continue.
        :param output_payload: the output payload of the flow.
        :type output_payload: Dict[str, Any]
        :param src_flow: the flow that generates the output payload.
        :type src_flow: Flow
        :return: the output payload of the flow.
        :rtype: Dict[str, Any]
        """
        command = output_payload["command"]
        if command == "finish":
            # ~~~ fetch temp file location, plan content, memory file (of upper level flow e.g. ExtLib) from flow state
            keys_to_fetch_from_state = ["temp_plan_file_location", "plan", "memory_files"]
            fetched_state = self._fetch_state_attributes_by_keys(keys=keys_to_fetch_from_state)
            temp_plan_file_location = fetched_state["temp_plan_file_location"]
            plan_content = fetched_state["plan"]
            plan_file_location = fetched_state["memory_files"]["plan"]

            # ~~~ delete the temp plan file ~~~
            if os.path.exists(temp_plan_file_location):
                os.remove(temp_plan_file_location)

            # ~~~ write plan content to plan file ~~~
            with open(plan_file_location, 'w') as file:
                file.write(plan_content)

            # ~~~ return the plan content ~~~
            return {
                "EARLY_EXIT": True,
                "plan": plan_content,
                "summary": "Jarvis/PlanWriter: " + output_payload["command_args"]["summary"],
                "status": "finished"
            }
        elif command == "manual_finish":
            # ~~~ delete the temp plan file ~~~
            keys_to_fetch_from_state = ["temp_plan_file_location"]
            fetched_state = self._fetch_state_attributes_by_keys(keys=keys_to_fetch_from_state)
            temp_plan_file_location = fetched_state["temp_plan_file_location"]
            if os.path.exists(temp_plan_file_location):
                os.remove(temp_plan_file_location)
            # ~~~ return the manual quit status ~~~
            return {
                "EARLY_EXIT": True,
                "plan": "no plan was generated",
                "summary": "Jarvis/PlanWriter: PlanWriter was terminated explicitly by the user, process is unfinished",
                "status": "unfinished"
            }
        elif command == "write_plan":
            keys_to_fetch_from_state = ["memory_files"]
            fetched_state = self._fetch_state_attributes_by_keys(keys=keys_to_fetch_from_state)
            output_payload["command_args"]["plan_file_location"] = fetched_state["memory_files"]["plan"]
            return output_payload
        else:
            return output_payload