from datetime import datetime
from sqlalchemy import Column, Integer, String, ForeignKey, DateTime, Boolean
from sqlalchemy.orm import relationship
from orm.user import User
from orm.topic import Topic, ShoutTopic
from orm.reaction import Reaction
from services.stat.reacted import ReactedStorage, ReactionKind
from services.stat.viewed import ViewedStorage
from base.orm import Base


class ShoutReactionsFollower(Base):
    __tablename__ = "shout_reactions_followers"
    
    id = None
    follower = Column(ForeignKey('user.slug'), primary_key = True)
    shout = Column(ForeignKey('shout.slug'), primary_key = True)
    auto = Column(Boolean, nullable=False, default = False)
    createdAt: str = Column(DateTime, nullable=False, default = datetime.now, comment="Created at")
    deletedAt: str = Column(DateTime, nullable=True)

class ShoutAuthor(Base):
    __tablename__ = "shout_author"
    
    id = None
    shout = Column(ForeignKey('shout.slug'), primary_key = True)
    user = Column(ForeignKey('user.slug'), primary_key = True)
    caption: str = Column(String, nullable = True, default = "")
    
class ShoutAllowed(Base):
    __tablename__ = "shout_allowed"
    
    id = None
    shout = Column(ForeignKey('shout.slug'), primary_key = True)
    user = Column(ForeignKey('user.id'), primary_key = True)

class Shout(Base):
    __tablename__ = 'shout'

    id = None

    slug: str = Column(String, primary_key=True)
    community: str = Column(Integer, ForeignKey("community.id"), nullable=False, comment="Community")
    body: str = Column(String, nullable=False, comment="Body")
    createdAt: str = Column(DateTime, nullable=False, default = datetime.now, comment="Created at")
    updatedAt: str = Column(DateTime, nullable=True, comment="Updated at")
    replyTo: int = Column(ForeignKey("shout.slug"), nullable=True)
    versionOf: int = Column(ForeignKey("shout.slug"), nullable=True)
    tags: str = Column(String, nullable=True)
    publishedBy: int = Column(ForeignKey("user.id"), nullable=True)
    publishedAt: str = Column(DateTime, nullable=True)
    cover: str = Column(String, nullable = True)
    title: str = Column(String, nullable = True)
    subtitle: str = Column(String, nullable = True)
    layout: str = Column(String, nullable = True)
    reactions = relationship(lambda: Reaction)
    authors = relationship(lambda: User, secondary=ShoutAuthor.__tablename__)
    topics = relationship(lambda: Topic, secondary=ShoutTopic.__tablename__)
    mainTopic = Column(ForeignKey("topic.slug"), nullable=True)
    visibleFor = relationship(lambda: User, secondary=ShoutAllowed.__tablename__)
    draft: bool = Column(Boolean, default=True)
    oid: str = Column(String, nullable=True)

    @property
    async def stat(self):
        rrr = await ReactedStorage.get_shout(self.slug)
        return {
                "viewed": await ViewedStorage.get_shout(self.slug),
			    "reacted": len(rrr),
			    "rating": await ReactedStorage.get_rating(self.slug)
		}