from __future__ import annotations
from typing import Optional

import uuid
from datetime import datetime

from sqlalchemy import Boolean, DateTime, ForeignKey, Text, func
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import Mapped, mapped_column

from app.db.base_class import Base


class FaqReply(Base):
    __tablename__ = "faq_replies"

    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    faq_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("faq_items.id"), index=True, nullable=False)
    study_id: Mapped[Optional[uuid.UUID]] = mapped_column(UUID(as_uuid=True), ForeignKey("studies.id"), index=True, nullable=True)
    content: Mapped[str] = mapped_column(Text, nullable=False)
    created_by: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=False)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, server_default=func.now())
    quote_reply_id: Mapped[Optional[uuid.UUID]] = mapped_column(
        UUID(as_uuid=True), ForeignKey("faq_replies.id"), nullable=True
    )
    is_deleted: Mapped[bool] = mapped_column(Boolean, nullable=False, server_default="false")