import logging
import uuid
from datetime import datetime, timezone
from typing import Protocol

from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession

from ....domain.models.article import (
    Article,
    ArticleOwnership,
    ArticleOwnershipRoleEnum,
    ArticleTypeEnum,
)
from ..entities.article_entities import ArticleEntity, ArticleOwnershipEntity


class ArticleRepository(Protocol):
    async def create(
        self,
        article_type: ArticleTypeEnum,
        language: str,
        target_complexity: str,
        title: str,
        text: str,
    ) -> Article: ...

    async def get_by_id(self, article_id: uuid.UUID) -> Article | None: ...

    async def update_title_and_text(
        self, id: uuid.UUID, title: str, text: str
    ) -> Article: ...

    async def update_linguistic_data(
        self, id: uuid.UUID, linguistic_data: dict
    ) -> Article: ...

    async def update_audio_key(self, id: uuid.UUID, audio_key: str) -> Article: ...
    
    async def get_non_deleted_articles_for_owner(self, owner_id: uuid.UUID) -> list[Article]: ...


class ArticleOwnershipRepository(Protocol):
    async def create(
        self,
        article_id: uuid.UUID,
        ownership_role: ArticleOwnershipRoleEnum,
        user_id: uuid.UUID,
    ) -> ArticleOwnership: ...

    async def get_by_article_id(
        self, article_id: uuid.UUID
    ) -> list[ArticleOwnership]: ...


def _article_to_model(entity: ArticleEntity) -> Article:
    return Article(
        id=str(entity.id),
        article_type=ArticleTypeEnum(entity.article_type),
        language=entity.language,
        target_complexity=entity.target_complexity,
        title=entity.title,
        text=entity.text,
        audio_key=entity.audio_key,
        text_linguistic_data=entity.text_linguistic_data,
        created_at=entity.created_at,
        published_at=entity.published_at,
        deleted_at=entity.deleted_at,
    )


def _ownership_to_model(entity: ArticleOwnershipEntity) -> ArticleOwnership:
    return ArticleOwnership(
        id=str(entity.id),
        article_id=str(entity.article_id),
        ownership_role=ArticleOwnershipRoleEnum(entity.ownership_role),
        user_id=str(entity.user_id),
        created_at=entity.created_at,
        deleted_at=entity.deleted_at,
    )


logger = logging.getLogger(__name__)


class PostgresArticleRepository:
    def __init__(self, db: AsyncSession) -> None:
        self.db = db

    async def create(
        self,
        article_type: ArticleTypeEnum,
        language: str,
        target_complexity: str,
        title: str,
        text: str,
    ) -> Article:
        entity = ArticleEntity(
            article_type=article_type.value,
            language=language,
            target_complexity=target_complexity,
            title=title,
            text=text,
            created_at=datetime.now(timezone.utc),
        )
        self.db.add(entity)
        await self.db.commit()
        await self.db.refresh(entity)
        return _article_to_model(entity)

    async def get_by_id(self, article_id: uuid.UUID) -> Article | None:
        result = await self.db.execute(
            select(ArticleEntity).where(ArticleEntity.id == article_id)
        )
        entity = result.scalar_one_or_none()
        return _article_to_model(entity) if entity else None
    
    async def get_non_deleted_articles_for_owner(self, owner_id: uuid.UUID) -> list[Article]:
        result = await self.db.execute(
            select(ArticleEntity)
            .join(ArticleOwnershipEntity, ArticleEntity.id == ArticleOwnershipEntity.article_id)
            .where(
                ArticleOwnershipEntity.user_id == owner_id,
                ArticleOwnershipEntity.deleted_at.is_(None),
                ArticleEntity.deleted_at.is_(None),
                ArticleOwnershipEntity.ownership_role == ArticleOwnershipRoleEnum.owner.value,
            )
        )
        entities = result.scalars().all()
        return [_article_to_model(entity) for entity in entities]

    async def update_title_and_text(
        self, id: uuid.UUID, title: str, text: str
    ) -> Article:
        entity = await self.db.execute(
            select(ArticleEntity).where(ArticleEntity.id == id)
        )
        a = entity.scalar_one_or_none()

        if a is None:
            logger.error(
                f"update_title_and_text failed, cannot find article with id '{id}'"
            )
            raise

        a.title = title
        a.text = text
        await self.db.commit()
        logger.info(f"update_title_and_text for article '{id}' successful")
        return _article_to_model(a)

    async def update_linguistic_data(
        self, id: uuid.UUID, linguistic_data: dict
    ) -> Article:
        e = await self.db.execute(select(ArticleEntity).where(ArticleEntity.id == id))
        a = e.scalar_one_or_none()
        if a is None:
            logger.error(
                f"update_linguistic_data failed, cannot find article with id '{id}'"
            )
            raise
        a.text_linguistic_data = linguistic_data
        await self.db.commit()
        logger.info(f"update_linguistic_data for article '{id}' successful")
        return _article_to_model(a)

    async def update_audio_key(self, id: uuid.UUID, audio_key: str) -> Article:
        e = await self.db.execute(select(ArticleEntity).where(ArticleEntity.id == id))
        a = e.scalar_one_or_none()
        if a is None:
            logger.error(f"update_audio_key failed, cannot find article with id '{id}'")
            raise
        a.audio_key = audio_key
        await self.db.commit()
        logger.info(f"update_audio_key for article '{id}' successful")
        return _article_to_model(a)


class PostgresArticleOwnershipRepository:
    def __init__(self, db: AsyncSession) -> None:
        self.db = db

    async def create(
        self,
        article_id: uuid.UUID,
        ownership_role: ArticleOwnershipRoleEnum,
        user_id: uuid.UUID,
    ) -> ArticleOwnership:
        entity = ArticleOwnershipEntity(
            article_id=article_id,
            ownership_role=ownership_role.value,
            user_id=user_id,
            created_at=datetime.now(timezone.utc),
        )
        self.db.add(entity)
        await self.db.commit()
        await self.db.refresh(entity)
        return _ownership_to_model(entity)

    async def get_by_article_id(self, article_id: uuid.UUID) -> list[ArticleOwnership]:
        result = await self.db.execute(
            select(ArticleOwnershipEntity).where(
                ArticleOwnershipEntity.article_id == article_id
            )
        )
        return [_ownership_to_model(e) for e in result.scalars().all()]