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# Copyright (c) 2021 Ultimaker B.V.
# Cura is released under the terms of the LGPLv3 or higher.
from datetime import datetime, timezone
from typing import TypeVar, Dict, List, Any, Type, Union
# Type variable used in the parse methods below, which should be a subclass of BaseModel.
T = TypeVar("T", bound="BaseModel")
class BaseModel:
def __init__(self, **kwargs) -> None:
self.__dict__.update(kwargs)
self.validate()
# Validates the model, raising an exception if the model is invalid.
def validate(self) -> None:
pass
def __eq__(self, other):
"""Checks whether the two models are equal.
:param other: The other model.
:return: True if they are equal, False if they are different.
"""
return type(self) == type(other) and self.toDict() == other.toDict()
def __ne__(self, other) -> bool:
"""Checks whether the two models are different.
:param other: The other model.
:return: True if they are different, False if they are the same.
"""
return type(self) != type(other) or self.toDict() != other.toDict()
def toDict(self) -> Dict[str, Any]:
"""Converts the model into a serializable dictionary"""
return self.__dict__
@staticmethod
def parseModel(model_class: Type[T], values: Union[T, Dict[str, Any]]) -> T:
"""Parses a single model.
:param model_class: The model class.
:param values: The value of the model, which is usually a dictionary, but may also be already parsed.
:return: An instance of the model_class given.
"""
if isinstance(values, dict):
return model_class(**values)
return values
@classmethod
def parseModels(cls, model_class: Type[T], values: List[Union[T, Dict[str, Any]]]) -> List[T]:
"""Parses a list of models.
:param model_class: The model class.
:param values: The value of the list. Each value is usually a dictionary, but may also be already parsed.
:return: A list of instances of the model_class given.
"""
return [cls.parseModel(model_class, value) for value in values]
@staticmethod
def parseDate(date: Union[str, datetime]) -> datetime:
"""Parses the given date string.
:param date: The date to parse.
:return: The parsed date.
"""
if isinstance(date, datetime):
return date
return datetime.strptime(date, "%Y-%m-%dT%H:%M:%S.%fZ").replace(tzinfo=timezone.utc)
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