"""
Snapshot archive for imported external tryout payloads.

Stores each imported JSON export so the backend can trace source changes
without treating the source file itself as the system of record.
"""

from datetime import datetime
from typing import Optional

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

from app.database import Base


class TryoutImportSnapshot(Base):
    __tablename__ = "tryout_import_snapshots"

    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
    website_id: Mapped[int] = mapped_column(
        ForeignKey("websites.id", ondelete="CASCADE", onupdate="CASCADE"),
        nullable=False,
        index=True,
        comment="Website identifier",
    )
    source_tryout_id: Mapped[str] = mapped_column(
        String(255),
        nullable=False,
        index=True,
        comment="External source tryout identifier",
    )
    source_key: Mapped[str] = mapped_column(
        String(255),
        nullable=False,
        comment="External tryout object key in source payload",
    )
    title: Mapped[str] = mapped_column(
        String(255),
        nullable=False,
        comment="Imported tryout title",
    )
    source_permalink: Mapped[Optional[str]] = mapped_column(
        String(1024),
        nullable=True,
        comment="Imported source permalink",
    )
    source_status: Mapped[Optional[str]] = mapped_column(
        String(50),
        nullable=True,
        comment="Imported source status",
    )
    exported_at: Mapped[Optional[datetime]] = mapped_column(
        DateTime(timezone=True),
        nullable=True,
        comment="Timestamp from source export metadata",
    )
    source_created_at: Mapped[Optional[datetime]] = mapped_column(
        DateTime(timezone=True),
        nullable=True,
        comment="Source tryout created timestamp",
    )
    source_modified_at: Mapped[Optional[datetime]] = mapped_column(
        DateTime(timezone=True),
        nullable=True,
        comment="Source tryout modified timestamp",
    )
    exported_by: Mapped[Optional[str]] = mapped_column(
        String(255),
        nullable=True,
        comment="Source exporter identity",
    )
    question_count: Mapped[int] = mapped_column(
        Integer,
        nullable=False,
        default=0,
        comment="Number of questions in imported payload",
    )
    result_count: Mapped[int] = mapped_column(
        Integer,
        nullable=False,
        default=0,
        comment="Number of result rows in imported payload",
    )
    payload_checksum: Mapped[str] = mapped_column(
        String(64),
        nullable=False,
        comment="Checksum for the imported payload",
    )
    raw_payload: Mapped[dict] = mapped_column(
        JSON,
        nullable=False,
        comment="Original imported payload",
    )
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), nullable=False, server_default=func.now()
    )
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        nullable=False,
        server_default=func.now(),
        onupdate=func.now(),
    )