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python-fun/domain/marketplace/classified_ad.py

46 lines
1.4 KiB
Python

from dataclasses import dataclass, field
from decimal import Decimal
from domain.marketplace.classified_ad_id import ClassifiedAdId
from domain.marketplace.classified_ad_state import ClassifiedAdState
from domain.marketplace.classified_ad_text import ClassifiedAdText
from domain.marketplace.classified_ad_title import ClassifiedAdTitle
from domain.marketplace.invalid_entity_state_exception import (
InvalidEntityStateException,
)
from domain.marketplace.price import Price
from domain.marketplace.user_id import UserId
@dataclass(frozen=True)
class ClassifiedAd:
id: ClassifiedAdId
_ownerId: UserId
title: ClassifiedAdTitle
text: ClassifiedAdText
price: Price = field(default_factory=lambda: Price(amount=Decimal("0.00")))
state: ClassifiedAdState | None = None
def request_to_publish(self):
errors = []
if not self.title.title:
errors.append("title")
if not self.text.text:
errors.append("text")
if self.price.amount <= 0:
errors.append("price")
if errors:
raise InvalidEntityStateException(
f"Cannot publish classified ad with missing or invalid: {', '.join(errors)}"
)
return ClassifiedAd(
id=self.id,
_ownerId=self._ownerId,
title=self.title,
text=self.text,
price=self.price,
state=ClassifiedAdState.PendingReview,
)