from datetime import datetime

from sqlalchemy import BigInteger, DateTime, ForeignKey, Integer, String, Text, func
from sqlalchemy.orm import Mapped, mapped_column

from app.db.base import Base


class SchemeVersionRecord(Base):
    __tablename__ = "scheme_versions"

    id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
    scheme_version_id: Mapped[str] = mapped_column(String(32), unique=True, index=True, nullable=False)
    scheme_id: Mapped[str] = mapped_column(
        String(32),
        ForeignKey("schemes.scheme_id", ondelete="CASCADE"),
        nullable=False,
        index=True,
    )
    version_number: Mapped[int] = mapped_column(Integer, nullable=False)
    status: Mapped[str] = mapped_column(String(32), nullable=False, default="draft")

    normalized_storage_path: Mapped[str] = mapped_column(Text, nullable=False)
    normalized_elements_count: Mapped[int] = mapped_column(Integer, nullable=False)
    normalized_seats_count: Mapped[int] = mapped_column(Integer, nullable=False)
    normalized_groups_count: Mapped[int] = mapped_column(Integer, nullable=False)
    normalized_sectors_count: Mapped[int] = mapped_column(Integer, nullable=False)

    display_svg_storage_path: Mapped[str | None] = mapped_column(Text, nullable=True)
    display_svg_status: Mapped[str] = mapped_column(String(32), nullable=False, default="pending")
    display_svg_generated_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)

    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        nullable=False,
        server_default=func.now(),
    )