import uuid
from datetime import datetime, timezone
from typing import Optional

from sqlalchemy import DateTime, Enum, ForeignKey, Integer, String, Text
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.core.database import Base


class SessionSupportingData(Base):
    __tablename__ = "session_supporting_data"

    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    session_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("sessions.id", ondelete="CASCADE"), nullable=False, index=True)
    label: Mapped[str] = mapped_column(String(255), nullable=False)
    data_type: Mapped[str] = mapped_column(Enum("text_snippet", "screenshot", name="supporting_data_type"), nullable=False)
    content: Mapped[str] = mapped_column(Text, nullable=False)
    content_type: Mapped[Optional[str]] = mapped_column(String(50), nullable=True)
    sort_order: Mapped[int] = mapped_column(Integer, nullable=False, default=0)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc), nullable=False)
    updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc), onupdate=lambda: datetime.now(timezone.utc), nullable=False)

    session = relationship("Session", back_populates="supporting_data")