import datetime
from dataclasses import dataclass,field


@dataclass(slots=True)  # ! cela veut dire que pas de __dict__ dans les instances !!!

class DacCols:

    compte:   str
    datecomptable: str
    datevaleur:    str
    reference:     str
    opdate: str

    valid: bool = field(init=False,compare=False)

    def __post_init__(self):

        self.valid = True
        self.validate_fields()

    def validate_fields(self):
        """validation des champs sauvés dans la dataclass"""

        for thisdate in (self.datevaleur,self.opdate,self.datecomptable):
            
            if thisdate is self.datevaleur: pr = True
            else: pr = False

            if pr: print(f'START:{thisdate} --- {thisdate is self.datevaleur} --- {type(thisdate)} --- {id(thisdate)}')

            if 'T' in thisdate: # remp
                if pr: print(f'AVANT:{thisdate} --- {thisdate is self.datevaleur} --- {type(thisdate)} --- {id(thisdate)}')

                thisdate = thisdate.replace('T',' ')

                if pr: print(f'APRES:{thisdate} --- {thisdate is self.datevaleur} --- {type(thisdate)} --- {id(thisdate)}')

        self.datevaleur = self.datevaleur.replace('T',' ')
        print(f'APRESTOUT:{self.datevaleur} --- {self.datevaleur is self.datevaleur} --- {type(self.datevaleur)} --- {id(self.datevaleur)}')

        print("OUT:",self.datevaleur,self.opdate,self.datecomptable)

class StdCols:

    def __init__(self,compte='', datecomptable='', datevaleur='', reference='', opdate=''):

        self.compte = compte
        self.datecomptable = datecomptable
        self.datevaleur = datevaleur
        self.reference = reference
        self.opdate = opdate
        self.valid = False

        self.validate_fields()

    def validate_fields(self):
        """validation des champs sauvés dans la dataclass"""

        for thisdate in (self.datevaleur, self.opdate, self.datecomptable):

            if thisdate is self.datevaleur:
                pr = True
            else:
                pr = False

            if pr: print(f'START:{thisdate} --- {thisdate is self.datevaleur} --- {type(thisdate)} --- {id(thisdate)}')

            if 'T' in thisdate:  # remp
                if pr: print(
                    f'AVANT:{thisdate} --- {thisdate is self.datevaleur} --- {type(thisdate)} --- {id(thisdate)}')

                thisdate = thisdate.replace('T', ' ')

                if pr: print(
                    f'APRES:{thisdate} --- {thisdate is self.datevaleur} --- {type(thisdate)} --- {id(thisdate)}')

        self.datevaleur = self.datevaleur.replace('T', ' ')
        print(
            f'APRESTOUT:{self.datevaleur} --- {self.datevaleur is self.datevaleur} --- {type(self.datevaleur)} --- {id(self.datevaleur)}')

        print("OUT:", self.datevaleur, self.opdate, self.datecomptable)


def main():

    DAC = DacCols(compte='XXXXXXX', datecomptable='2021-05-07T00:00:00.000',
                  datevaleur='2021-05-01T00:00:00.000',
                  reference='2021-00008',
                  opdate='2021-05-12T00:00:00.000')

    print(DAC)
    CLA = StdCols(compte='XXXXXXX', datecomptable='2021-05-07T00:00:00.000',
                  datevaleur='2021-05-01T00:00:00.000',
                  reference='2021-00008',
                  opdate='2021-05-12T00:00:00.000')

    print(CLA)

if __name__ == '__main__':
    main()