from urllib import parse
from datetime import datetime
from typing import Union

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:
            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
        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}")

        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:
            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:
        all_vars = vars(self)
        all_vars.pop('cmd')
        all_vars.pop('req_id')
        all_vars.pop('stat')

        ret = f"cmd={self.cmd}&req_id={self.req_id}&stat={self.stat}" 
        additional_params = parse.urlencode(all_vars, doseq=True, quote_via=parse.quote, safe=",")
        
        if additional_params != '':
            ret += f"&{additional_params}"

        return ret