from datetime import datetime


class RawData:
    def __init__(self, data):
        self.__dict__.update(data)

    def get_str(self, attr):
        return RawData.get_str_st(self.__dict__, attr)

    @staticmethod
    def get_str_st(value, attr):
        if value is None:
            return ''
        result = value[attr]
        if result is None:
            return ''
        return result

    def get_int(self, attr):
        return RawData.get_int_st(self.__dict__, attr)

    @staticmethod
    def get_int_st(value, attr):
        if value is None:
            return -1
        result = value[attr]
        if result is None:
            return -1
        if not str(result).isnumeric():
            print(f'The value {result} is not a number')
            return -1
        return result

    @staticmethod
    def get_date_st(value):
        if value is None:
            return ''
        try:
            return datetime.strptime(value, '%d.%m.%Y').date()
        except ValueError:
            try:
                return datetime.strptime(value, '%d.%m.%y').date()
            except ValueError:
                print(f'Invalid date {value}')
                return ''

    @staticmethod
    def get_collection_st(collection, function):
        return list(map(lambda item: function(item), [] if collection is None else collection))