import zlib
from .models import Map
from .schemas import MapOut
import copy
from .config import config


def crc32(bytes_in: bytes) -> int:
    return zlib.crc32(bytes_in, 0) & 0xffffffff


def map_model_to_out_schema(map_in: Map) -> MapOut:
    d = copy.deepcopy(map_in.__dict__)
    d["crc_human"] = hex(map_in.crc)[2:].upper()
    d["blob_location"] = "%s/%s%s" % (config["base_url"], config["upload_path"], map_in.filename)
    map_out = MapOut(**d)
    return map_out