import asyncio
import logging
from typing import Dict

from barcode_server.barcode import BarcodeReader, BarcodeEvent
from barcode_server.config import AppConfig
from barcode_server.const import *
from barcode_server.notifier import BarcodeNotifier
from barcode_server.notifier.serial import SerialNotifier
from barcode_server.notifier.file import FileNotifier
from barcode_server.stats import REST_TIME_DEVICES, WEBSOCKET_CLIENT_COUNT
from barcode_server.util import input_device_to_dict

LOGGER = logging.getLogger(__name__)

class Server:

    def __init__(self, config: AppConfig, barcode_reader: BarcodeReader):
        self.config = config

        self.barcode_reader = barcode_reader
        self.barcode_reader.add_listener(self.on_barcode)

        self.notifiers: Dict[str, BarcodeNotifier] = {}

        if config.SERIAL_PATH_A.value is not None:
            serial_notifier = SerialNotifier(config.SERIAL_PATH_A.value, config.SERIAL_PATH_B.value)
            self.notifiers["serial"] = serial_notifier

        if config.FILE_PATH.value is not None:
            file_notifier = FileNotifier(config.FILE_PATH.value)
            self.notifiers["file"] = file_notifier

    async def start(self):
        # start detecting and reading barcode scanners
        await self.barcode_reader.start()
        # start notifier queue processors
        for key, notifier in self.notifiers.items():
            LOGGER.debug(f"Starting notifier: {key}")
            await notifier.start()

        # wait forever
        return await asyncio.Event().wait()

    async def on_barcode(self, event: BarcodeEvent):
        for key, notifier in self.notifiers.items():
            await notifier.add_event(event)