import uuid
import enum
from datetime import datetime, timezone
from sqlalchemy import String, Boolean, DateTime, Enum as SAEnum, ForeignKey, Text
from sqlalchemy.orm import Mapped, mapped_column, relationship
from app.database import Base

class UserRole(str, enum.Enum):
    super_admin = "super_admin"
    school_admin = "school_admin"

class HubUser(Base):
    __tablename__ = "hub_users"

    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    email: Mapped[str] = mapped_column(String(255), unique=True, nullable=False, index=True)
    full_name: Mapped[str] = mapped_column(String(255), nullable=False)
    hashed_password: Mapped[str] = mapped_column(String(255), nullable=False)
    role: Mapped[UserRole] = mapped_column(SAEnum(UserRole), nullable=False, default=UserRole.school_admin)
    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
    school_id: Mapped[str | None] = mapped_column(String(36), ForeignKey("schools.id", ondelete="SET NULL"), nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc))
    last_login_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)

    school: Mapped["School | None"] = relationship("School", back_populates="admins")