from sqlalchemy import Column, Integer, String, Boolean, DateTime
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func

from app.database import Base


class User(Base):
    __tablename__ = "users"

    id = Column(Integer, primary_key=True, index=True)
    username = Column(String(50), unique=True, index=True, nullable=False)
    email = Column(String(120), unique=True, index=True, nullable=False)
    hashed_password = Column(String(255), nullable=False)
    is_active = Column(Boolean, default=True)
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())

    sessions = relationship("Session", back_populates="user", cascade="all, delete-orphan")
    worlds = relationship("World", back_populates="owner")
    assets = relationship("Asset", back_populates="owner")

    # Social graph
    sent_friend_requests = relationship(
        "Friendship",
        foreign_keys="Friendship.requester_id",
        back_populates="requester",
        cascade="all, delete-orphan",
    )
    received_friend_requests = relationship(
        "Friendship",
        foreign_keys="Friendship.addressee_id",
        back_populates="addressee",
        cascade="all, delete-orphan",
    )
    following = relationship(
        "Follow",
        foreign_keys="Follow.follower_id",
        back_populates="follower",
        cascade="all, delete-orphan",
    )
    followers = relationship(
        "Follow",
        foreign_keys="Follow.followed_id",
        back_populates="followed",
        cascade="all, delete-orphan",
    )
    blocks_issued = relationship(
        "Block",
        foreign_keys="Block.blocker_id",
        back_populates="blocker",
        cascade="all, delete-orphan",
    )
    blocks_received = relationship(
        "Block",
        foreign_keys="Block.blocked_id",
        back_populates="blocked",
        cascade="all, delete-orphan",
    )