from json import loads as json_parse, dumps as _json_stringify
from socket import if_nametoindex
from typing import Dict, List, Optional, Any
from xml.dom.expatbuilder import parseString
import paho.mqtt.client as mqtt
from biopro.text import *
from .task import Task
from copy import copy, deepcopy

_RUNTIME_COMPILE = False

def json_stringify(o: Any) -> str:
    return _json_stringify(o, separators=(',', ':'))

class TaskManager():
    def __init__(self, task_list):
      self._task_list = []
      self._next_task = []
      self._prev_task = None
      self._running_task = None
      
      self.load_task_list(task_list)

      # self.set_running_task(self._task_list[0])
      # self._running_task.run()
      self._next_task.append(self._task_list[0])
    
    @property
    def task_list(self):
      return self._task_list

    @property
    def export_task_list(self):
      return [d.as_json() for d in self._task_list]

    @property
    def prev_task(self):
      return self._prev_task
    
    @property
    def running_task(self):
      return self._running_task
    
    @property
    def next_task(self):
      return self._next_task

    @property
    def check_list(self):
      return [self._running_task, *self._next_task]
    
    @property
    def check_list(self):
      return [self._running_task, *self._next_task]
    
    def load_task_list(self, task_list):
      for task in task_list:
        task = Task(task) 
        self._task_list.append(task)
    
    # original version
    """ def set_running_task(self, task):
      try:
        # if there is task running & same task active ,then reject
        if self._running_task != None and self._running_task.uuid == task.uuid:
          return False

        # save running task
        self._prev_task = self._running_task
        # clear next task list
        self._next_task.clear()
        self._running_task = task
        self._running_task.run()

        if self._prev_task != None:
          # if previous task is still running, then need to close
          if self._prev_task.status == 1:
            self._prev_task.stop()
          print('prev', 'run', self._prev_task.name, self._running_task.name)

        for task_uuid in self._running_task.next:
          _task = next((task for task in self._task_list if task.uuid == task_uuid), None)
          if _task != None:
            self._next_task.append(_task)
      except RuntimeError as e:
        print(e) """

    def set_running_task(self, task):
      try:
        # if there is task running & same task active ,then reject
        if self._running_task != None and self._running_task.uuid == task.uuid:
          # print('set_running_task return false: ', self._running_task.name)
          return False

        # save running task
        self._prev_task = self._running_task
        # clear next task list
        self._next_task.clear()
        self._running_task = task
        self._running_task.run()

        if self._prev_task != None:
          # if previous task is still running, then need to close
          if self._prev_task.status == 1:
            self._prev_task.stop()
          print('prev', 'run', self._prev_task.name, self._running_task.name)

        # print(f'!!@#!set_running_task\n\n\n{task._cycle_count}\n{task._cycle}\n\n\n')
        if task._cycle_count < task._cycle:
          task._cycle_count += 1
          cycle_target = deepcopy(self._task_list[task._cycle_next])  # TODO: not sure deep or shallow
          cycle_target.reset()
          # print('!!@#!status: ', cycle_target.status)
          # self._task_list[task._cycle_next].status = 0
          self._next_task.append(cycle_target)
          # print('!!@#!append what: ', cycle_target)
        else:
          task._cycle_count = 0
          for task_uuid in self._running_task.next:
            _task = next((task for task in self._task_list if task.uuid == task_uuid), None)
            if _task != None:
              _task.reset()
              # print('!@#WATCH', _task.status)
              # print('!@#_task._cycle_count: ', _task._cycle_count)
              _task_copy = deepcopy(_task)  # TODO: here fix one bug, and make another, due to the second time "stop" condition will be trigger in this way, while the number of cycle will be reset
              self._next_task.append(_task_copy)
      except RuntimeError as e:
        print(e)
    
    """ def set_cycle_task(self, task):
      try:
        # if there is task running & same task active ,then reject
        if self._running_task != None and self._running_task.uuid == task.uuid:
          return False

        print(f'!!@#!\n\n\n{task._cycle_count}\n{task._cycle}\n\n\n')
        if task._cycle_count < task._cycle:
          task._cycle_count += 1
          self._next_task.append(self._task_list[task._cycle_next])
        else:
          task._cycle_count = 0
      except RuntimeError as e:
        print(e) """
    """ def set_cycle_task(self):
      try:
        print(f'!!@#!set_cycle_task\n\n\n{self._running_task._cycle_count}\n{self._running_task._cycle}\n\n\n')
        if self._running_task._cycle_count < self._running_task._cycle:
          self._running_task._cycle_count += 1
          self._next_task.append(self._task_list[self._running_task._cycle_next])
        else:
          self._running_task._cycle_count = 0
      except RuntimeError as e:
        print(e) """

    def get_task(self, task_id):
      return self._task_list[task_id]