import time
import asyncio
import logging

from .consts import ADAPTERS


class ServiceWorker:
    def __init__(self, manager, name, service):
        self.name = name
        self.manager = manager
        self.service = service
        self.adapter = ADAPTERS[service['adapter']]
        self.log = logging.getLogger(f'elstat.service.{name}')
        self.last_poll = None

        self._start()

    async def work(self):
        res = await self.adapter.query(self, self.service['adapter_args'])
        return res

    async def _work_loop(self):
        try:
            while True:
                self.log.info(f'polling {self.name}')
                self.last_poll = time.monotonic()
                await self.work()
                await asyncio.sleep(self.service['poll'])
        except Exception:
            self.log.exception('fail on poll')

    def _start(self):
        self.log.info(f'starting work loop for {self.name}')
        self.manager.loop.create_task(self._work_loop())