import asyncio
from os import getenv

import orjson

import db
import util
from processing import process

KEYNAME = "queue"

# Chunk size
CHUNK_SIZE = int(getenv("MONOLITH_INGEST_CHUNK_SIZE", "900"))
ITER_DELAY = float(getenv("MONOLITH_INGEST_ITER_DELAY", "0.5"))

log = util.get_logger("ingest")


class Ingest(object):
    def __init__(self):
        name = self.__class__.__name__
        self.log = util.get_logger(name)
        self.log.info(
            (
                "Starting ingest handler for chunk size of "
                f"{CHUNK_SIZE} every {ITER_DELAY} seconds."
            )
        )

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

    async def get_chunk(self):
        items = []
        # for source in SOURCES:
        # key = f"{KEYPREFIX}{source}"
        length = await db.ar.llen(KEYNAME)
        start_num = length - CHUNK_SIZE
        chunk = await db.ar.lrange(KEYNAME, start_num, -1)
        # chunk = await db.ar.rpop(KEYNAME, CHUNK_SIZE)
        if not chunk:
            return
        for item in chunk:
            item = orjson.loads(item)
            items.append(item)
        if items:
            await process.spawn_processing_threads(items)