craftbeerpi4-pione/cbpi/controller/fermentation_controller.py

import asyncio
import cbpi
import copy
import json
import logging
import os.path
from os import listdir
from os.path import isfile, join
import shortuuid
from cbpi.api.dataclasses import  Fermenter, FermenterStep, Props, Step
from cbpi.controller.basic_controller2 import BasicController
from tabulate import tabulate
import sys, os
from ..api.step import CBPiStep, StepMove, StepResult, StepState, CBPiFermentationStep



class FermentStep:

    def __init__(self, cbpi, step, on_done) -> None:
        self.cbpi = cbpi
        self.logger = logging.getLogger(__name__)
        self.step = step
        self.props = step.props
        self._done_callback = on_done
        self.task = None
        self.summary = ""

    def _done(self, task):
        if self._done_callback is not None:
            try:
                result = task.result()
                self._done_callback(self, result)
            except Exception as e:
                self.logger.error(e)

    async def run(self):
        while True:
            await asyncio.sleep(1)

    async def _run(self):
        try:
            await self.on_start()
            await self.run()
            self.cancel_reason = StepResult.DONE
        except asyncio.CancelledError as e:
            pass
        finally:
            await self.on_stop()

        return self.cancel_reason

    async def start(self):
        self.logger.info("Start {}".format(self.step.name))
        self.running = True
        self.task = asyncio.create_task(self._run())
        self.task.add_done_callback(self._done)

    async def next(self):
        self.running = False
        self.cancel_reason = StepResult.NEXT
        self.task.cancel()
        await self.task

    async def stop(self):
        try:
            self.running = False
            if self.task is not None and self.task.done() is False:
                self.logger.info("Stopping Task")
                self.cancel_reason = StepResult.STOP
                self.task.cancel()
                await self.task
        except Exception as e:
            self.logger.error(e)
    
    async def on_start(self):
        self.props.hello = "WOOHOo"
        pass

    async def on_stop(self):
        pass
            
class FermentationController:

    def __init__(self, cbpi):
        self.update_key = "fermenterupdate"
        self.cbpi = cbpi
        self.logger = logging.getLogger(__name__)
        self.path = os.path.join(".", 'config', "fermenter_data.json")
        self._loop = asyncio.get_event_loop() 
        self.data = []
        self.types = {}
        self.steptypes = {}
        self.cbpi.app.on_cleanup.append(self.shutdown)

    async def init(self):
        logging.info("INIT Fermentation Controller")
        self.check_fermenter_file()
        await self.load()
        pass

    def check_fermenter_file(self):
        if os.path.exists(os.path.join(".", 'config', "fermenter_data.json")) is False:
            logging.info("INIT fermenter_data.json file")
            data = {
                    "data": [
                            ]
                    }
            destfile = os.path.join(".", 'config', "fermenter_data.json")
            json.dump(data,open(destfile,'w'),indent=4, sort_keys=True)

    def push_update(self):
        self.cbpi.ws.send(dict(topic=self.update_key, data=list(map(lambda item: item.to_dict(), self.data))))
        for item in self.data:
            self.cbpi.push_update("cbpi/{}/{}".format(self.update_key,item.id), item.to_dict())
        pass

    async def shutdown(self, app=None):    
        self.save()
        for fermenter in self.data:
            self.logger.info("Shutdown {}".format(fermenter.name))
            for step in fermenter.steps:
                try:
                    self.logger.info("Stop {}".format(step.name))
                    await step.instance.stop()
                except Exception as e:
                    self.logger.error(e)

    async def load(self):
#        if os.path.exists(self.path) is False:
#            with open(self.path, "w") as file:
#                json.dump(dict(basic={}, steps=[]), file, indent=4, sort_keys=True)
        with open(self.path) as json_file:
            data = json.load(json_file)

            for i in data["data"]:
                self.data.append(self._create(i))
                 
    def _create_step(self, fermenter, item):
        id = item.get("id")
        name = item.get("name")
        status = StepState(item.get("status", "I"))
        type = item.get("type")

        type_cfg = self.types.get(type)
        if type_cfg is not None:
            inst = type_cfg.get("class")()
            print(inst)

        step = FermenterStep(id=id, name=name, type=type, status=status, instance=None, fermenter=fermenter)
        step.instance = FermentStep( self.cbpi, step, self._done)
        return step

    def _done(self, step_instance, result):
        
        step_instance.step.status = StepState.DONE
        self.save()
        if result == StepResult.NEXT:
            asyncio.create_task(self.start(step_instance.step.fermenter.id))

    def _create(self, data):
        try:
            id = data.get("id")
            name = data.get("name")
            sensor = data.get("sensor")
            heater = data.get("heater")
            cooler = data.get("cooler")
            logictype = data.get("type")
            temp = data.get("target_temp")
            brewname = data.get("brewname")
            props = Props(data.get("props", {}))
            fermenter = Fermenter(id, name, sensor, heater, cooler, brewname, props, temp, logictype)
            fermenter.steps = list(map(lambda item: self._create_step(fermenter, item), data.get("steps", [])))
            self.push_update()
            return fermenter
        except:
            return

        
    def _find_by_id(self, id):
        return next((item for item in self.data if item.id == id), None)

    async def get_all(self):
        return list(map(lambda x: x.to_dict(), self.data))
    
    def get_types(self):
        result = {}
        for key, value in self.types.items():
            result[key] = dict(name=value.get("name"), properties=value.get("properties"), actions=value.get("actions"))
        return result

    def get_steptypes(self):
        result = {}
        for key, value in self.steptypes.items():
            result[key] = dict(name=value.get("name"), properties=value.get("properties"), actions=value.get("actions"))
        return result

    def get_state(self):
        if self.data == []:
            logging.info(self.data)

        return {"data": list(map(lambda x: x.to_dict(), self.data)), "types":self.get_types(), "steptypes":self.get_steptypes()}

    async def get(self, id: str ):
        return self._find_by_id(id)

    async def create(self, data: Fermenter ):
        data.id = shortuuid.uuid()
        self.data.append(data)
        self.save()
        self.push_update()
        return data

    async def update(self, item: Fermenter ):

        logging.info(item)

        def _update(old_item: Fermenter, item: Fermenter):
            old_item.name = item.name
            old_item.sensor = item.sensor
            old_item.heater = item.heater
            old_item.cooler = item.cooler
            old_item.type = item.type
            old_item.brewname = item.brewname
            old_item.props = item.props
            old_item.target_temp = item.target_temp
            return old_item

        self.data = list(map(lambda old: _update(old, item) if old.id == item.id else old, self.data))
        self.save()
        self.push_update()
        return item

    async def set_target_temp(self, id: str, target_temp):
        try:
            item = self._find_by_id(id)
            logging.info(item.target_temp)
            if item:
                item.target_temp = target_temp
                self.save()
                self.push_update()
        except Exception as e:
            logging.error("Failed to set Target Temp {} {}".format(id, e))

    async def delete(self, id: str ):
        item = self._find_by_id(id)
        self.data = list(filter(lambda item: item.id != id, self.data))
        self.save()
        self.push_update()

    def save(self):
        data = dict(data=list(map(lambda item: item.to_dict(), self.data))) 
        with open(self.path, "w") as file:
            json.dump(data, file, indent=4, sort_keys=True)

    async def create_step(self, id, step: Step):
        try:
            step.id = shortuuid.uuid()
            item = self._find_by_id(id)

            step.instance = FermentStep( self.cbpi, step, self._done)

            item.steps.append(step)
            self.save()
            return step
        except Exception as e:
            self.logger.error(e)

    async def update_step(self, id, step):
        item = self._find_by_id(id)
        item = list(map(lambda old: item if old.id == step.id else old, item.steps))
        self.save()
    
    async def delete_step(self, id, stepid):
        item = self._find_by_id(id)
        item.steps = list(filter(lambda item: item.id != stepid, item.steps))
        self.save()
    
    def _find_by_status(self, data, status):
        return next((item for item in data if item.status == status), None)

    def _find_step_by_id(self, data, id):
        return next((item for item in data if item.id == id), None)

    async def start(self, id):
        self.logger.info("Start")
        try:
            item = self._find_by_id(id)
            step = self._find_by_status(item.steps, StepState.INITIAL)

            if step is None:
                self.logger.info("No futher step to start")
            else:
                await step.instance.start()
                step.status = StepState.ACTIVE
                self.save()

        except Exception as e:
            self.logger.error(e)

    async def stop(self, id):
        try:
            item = self._find_by_id(id)
            step = self._find_by_status(item.steps, StepState.ACTIVE)
            await step.instance.stop()
            step.status = StepState.STOP
            self.save()
        except Exception as e:
            self.logger.error(e)

    async def start_logic(self, id):
        try:
            item = self._find_by_id(id)
            logging.info("{} Start Id {} ".format(item.name, id))
            if item.instance is not None and item.instance.running is True:
                logging.warning("{} already running {}".format(item.name, id))
                return 
            if item.type is None:
                logging.warning("{} No Type {}".format(item.name, id))
                return 
            clazz = self.types[item.type]["class"]
            item.instance = clazz(self.cbpi, item.id, item.props)
            
            await item.instance.start()
            item.instance.running = True
            item.instance.task = self._loop.create_task(item.instance._run())
            
            logging.info("{} started {}".format(item.name, id))
            
        except Exception as e:
            logging.error("{} Cant start {} - {}".format(item.name, id, e))

    async def toggle(self, id):
        
        try:
            item = self._find_by_id(id)
            
            if item.instance is None or item.instance.state == False: 
                await self.start_logic(id)
            else:
                await item.instance.stop()
            self.push_update()
            
        except Exception as e:
            logging.error("Failed to switch on FermenterLogic {} {}".format(id, e))


    async  def next(self, id):
        self.logger.info("Next {} ".format(id))
        try:
            item = self._find_by_id(id)
            step = self._find_by_status(item.steps, StepState.ACTIVE)
            await step.instance.next()
        
        except Exception as e:
            self.logger.error(e)


    async def reset(self, id):
        self.logger.info("Reset")
        try:
            item = self._find_by_id(id)
            for step in item.steps:
                self.logger.info("Stopping Step {} {}".format(step.name, step.id))
                try:
                    await step.instance.stop()
                    step.status = StepState.INITIAL
                except Exception as e:
                    self.logger.error(e)
            self.save()
        except Exception as e:
            self.logger.error(e)

    async def move_step(self, fermenter_id, step_id, direction):
        try:
            fermenter = self._find_by_id(fermenter_id)
            index = next((i for i, item in enumerate(fermenter.steps) if item.id == step_id), None)
            if index == None:
                return 
            if index == 0 and direction == -1:
                return
            if index == len(fermenter.steps)-1 and direction == 1:
                return

            fermenter.steps[index], fermenter.steps[index+direction] = fermenter.steps[index+direction], fermenter.steps[index]
            self.save()
        
        except Exception as e:
            self.logger.error(e)