from sqlalchemy import and_
from orm.notification import NotificationSeen
from services.db import local_session
from resolvers.model import Notification, NotificationSeenResult, NotificationReaction

import strawberry
import logging
import json

from sqlalchemy.exc import SQLAlchemyError


logger = logging.getLogger(__name__)


@strawberry.type
class Mutation:
    @strawberry.mutation
    async def mark_seen(self, info, notification_id: int) -> NotificationSeenResult:
        author_id = info.context.get("author_id")
        if author_id:
            with local_session() as session:
                try:
                    ns = NotificationSeen(notification=notification_id, viewer=author_id)
                    session.add(ns)
                    session.commit()
                except SQLAlchemyError as e:
                    session.rollback()
                    logger.error(
                        f"[mark_notification_as_read] Ошибка при обновлении статуса прочтения уведомления: {str(e)}"
                    )
                    return NotificationSeenResult(error="cant mark as read")
        return NotificationSeenResult(error=None)

    @strawberry.mutation
    async def mark_seen_after(self, info, after: int) -> NotificationSeenResult:
        # TODO: use latest loaded notification_id as input offset parameter
        error = None
        try:
            author_id = info.context.get("author_id")
            if author_id:
                with local_session() as session:
                    nnn = session.query(Notification).filter(and_(Notification.created_at > after)).all()
                    for n in nnn:
                        try:
                            ns = NotificationSeen(notification=n.id, viewer=author_id)
                            session.add(ns)
                            session.commit()
                        except SQLAlchemyError:
                            session.rollback()
        except Exception as e:
            print(e)
            error = "cant mark as read"
        return NotificationSeenResult(error=error)

    @strawberry.mutation
    async def mark_seen_thread(self, info, thread: str, after: int) -> NotificationSeenResult:
        error = None
        author_id = info.context.get("author_id")
        if author_id:
            [shout_id, reply_to_id] = thread.split("::")
            with local_session() as session:
                # TODO: handle new follower and new shout notifications
                new_reaction_notifications = (
                    session.query(Notification)
                    .filter(
                        Notification.action == "create",
                        Notification.entity == "reaction",
                        Notification.created_at > after,
                    )
                    .all()
                )
                removed_reaction_notifications = (
                    session.query(Notification)
                    .filter(
                        Notification.action == "delete",
                        Notification.entity == "reaction",
                        Notification.created_at > after,
                    )
                    .all()
                )
                exclude = set([])
                for nr in removed_reaction_notifications:
                    reaction: NotificationReaction = json.loads(nr.payload)
                    exclude.add(reaction.id)
                for n in new_reaction_notifications:
                    reaction: NotificationReaction = json.loads(n.payload)
                    if (
                        reaction.id not in exclude
                        and str(reaction.shout) == str(shout_id)
                        and str(reaction.reply_to) == str(reply_to_id)
                    ):
                        try:
                            ns = NotificationSeen(notification=n.id, viewer=author_id)
                            session.add(ns)
                            session.commit()
                        except Exception:
                            session.rollback()
        else:
            error = "You are not logged in"
        return NotificationSeenResult(error=error)