from urllib import parse
from datetime import datetime
from typing import Union, Dict

def lazy_http_form_parse(src: Union[str, bytes]) -> Dict[bytes, bytes]:
    out = {}
    if type(src) == str:
        src = src.encode()
    for param in src.split(b"&"):
        kvp = param.split(b"=")
        out[parse.unquote(kvp[0])] = parse.unquote(kvp[1])

    return out


class DivaRequestParseException(Exception):
    """
    Exception raised when there is a fault in parsing a diva request,
    either due to a malformed request, or missing required items
    """

    def __init__(self, message: str) -> None:
        self.message = message
        super().__init__(self.message)


class BaseBinaryRequest:
    cmd: str
    req_id: str

    def __init__(self, raw: bytes) -> None:
        self.raw = raw
        self.raw_dict = dict(parse.parse_qsl(raw))

        if "cmd" not in self.raw_dict:
            raise DivaRequestParseException(f"cmd not in request data {self.raw_dict}")

        if "req_id" not in self.raw_dict:
            raise DivaRequestParseException(
                f"req_id not in request data {self.raw_dict}"
            )

        for k, v in self.raw_dict.items():
            setattr(self, k, v)


class BaseRequest:
    cmd: str
    req_id: str
    game_id: str
    r_rev: str
    kc_serial: str
    b_serial: str
    country_code: str

    def __init__(self, raw: Union[str, bytes]) -> None:
        self.raw = raw
        try:
            self.raw_dict: Dict[str, str] = lazy_http_form_parse(raw)
        except UnicodeDecodeError as e:
            raise DivaRequestParseException(f"Could not decode data {raw} - {e}")

        if "cmd" not in self.raw_dict:
            raise DivaRequestParseException(f"cmd not in request data {self.raw_dict}")

        if "req_id" not in self.raw_dict:
            raise DivaRequestParseException(
                f"req_id not in request data {self.raw_dict}"
            )

        if "place_id" not in self.raw_dict:
            raise DivaRequestParseException(
                f"place_id not in request data {self.raw_dict}"
            )

        if "start_up_mode" not in self.raw_dict:
            raise DivaRequestParseException(
                f"start_up_mode not in request data {self.raw_dict}"
            )

        if "cmm_dly_mod" not in self.raw_dict:
            raise DivaRequestParseException(
                f"cmm_dly_mod not in request data {self.raw_dict}"
            )

        if "cmm_dly_sec" not in self.raw_dict:
            raise DivaRequestParseException(
                f"cmm_dly_sec not in request data {self.raw_dict}"
            )

        if "cmm_err_mod" not in self.raw_dict:
            raise DivaRequestParseException(
                f"cmm_err_mod not in request data {self.raw_dict}"
            )

        if "region_code" not in self.raw_dict:
            raise DivaRequestParseException(
                f"region_code not in request data {self.raw_dict}"
            )

        if "time_stamp" not in self.raw_dict:
            raise DivaRequestParseException(
                f"time_stamp not in request data {self.raw_dict}"
            )

        for k, v in self.raw_dict.items():
            setattr(self, k, v)

        self.place_id = int(self.place_id)
        self.start_up_mode = int(self.start_up_mode)
        self.cmm_dly_mod = int(self.cmm_dly_mod)
        self.cmm_dly_sec = int(self.cmm_dly_sec)
        self.cmm_err_mod = int(self.cmm_err_mod)
        self.region_code = int(self.region_code)
        # datetime.now().astimezone().replace(microsecond=0).isoformat()
        self.time_stamp = datetime.strptime(self.time_stamp, "%Y-%m-%dT%H:%M:%S%z")


class BaseResponse:
    def __init__(self, cmd_id: str, req_id: int) -> None:
        self.cmd = cmd_id
        self.req_id = req_id
        self.stat = "ok"

    def make(self) -> str:
        ret = ""
        for k, v in vars(self).items():
            if type(v) == bool:
                v = int(v)
            ret += f"{k}={v}&"
        
        if ret[-1] == "&":
            ret = ret[:-1]
        return ret

class GameInitRequest(BaseRequest):
    def __init__(self, raw: Union[str, bytes]) -> None:
        super().__init__(raw)

class AttendRequest(BaseRequest):
    def __init__(self, raw: Union[str, bytes]) -> None:
        super().__init__(raw)        
        self.power_on = int(self.power_on)
        self.is_bb = bool(int(self.power_on))

class AttendResponse(BaseResponse):
    def __init__(self, cmd_id: str, req_id: int) -> None:
        super().__init__(cmd_id, req_id)
        self.atnd_prm1 = [1] * 100
        self.atnd_prm2 = [1] * 100
        self.atnd_prm3 = [1] * 100
        self.atnd_lut = datetime.now()
    
    def make(self) -> str:
        ret =  super().make()
        ret_dict = {
            "atnd_prm1": ','.join([str(i) for i in self.atnd_prm1]),
            "atnd_prm2": ','.join([str(i) for i in self.atnd_prm2]),
            "atnd_prm3": ','.join([str(i) for i in self.atnd_prm3]),
            "atnd_lut": parse.quote(self.atnd_lut.strftime('%Y-%m-%d %H:%M:%S:16.0'))
        }
        ret += "&" + parse.urlencode(ret_dict, safe=",")
        return ret