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,
        )