from __future__ import annotations

from datetime import datetime
from uuid import UUID, uuid4

from sqlalchemy.dialects.postgresql import JSONB, UUID as PGUUID
from sqlalchemy.orm import Mapped, mapped_column
from sqlalchemy.sql import func
from sqlalchemy.types import DateTime

from src.core.database import Base


class InstalledCompositionSnapshotRecord(Base):
    """Immutable project-level composition contract snapshot."""

    __tablename__ = "installed_composition_snapshots"

    id: Mapped[UUID] = mapped_column(PGUUID(as_uuid=True), primary_key=True, default=uuid4)
    project_id: Mapped[UUID] = mapped_column(PGUUID(as_uuid=True), nullable=False, index=True)
    recipe_id: Mapped[str | None] = mapped_column(nullable=True)
    recipe_version: Mapped[int | None] = mapped_column(nullable=True)
    starter_id: Mapped[str | None] = mapped_column(nullable=True)
    starter_version: Mapped[str | None] = mapped_column(nullable=True)
    feature_packs: Mapped[list] = mapped_column(JSONB, nullable=False, server_default="[]")
    app_blocks: Mapped[list] = mapped_column(JSONB, nullable=False, server_default="[]")
    capability_contract_versions: Mapped[dict] = mapped_column(JSONB, nullable=False, server_default="{}")
    auth_contract: Mapped[dict | None] = mapped_column(JSONB, nullable=True)
    auth_contract_version: Mapped[str | None] = mapped_column(nullable=True)
    runtime_contract_version: Mapped[str | None] = mapped_column(nullable=True)
    reaction_contract_version: Mapped[str | None] = mapped_column(nullable=True)
    generation_plan_hash: Mapped[str | None] = mapped_column(nullable=True)
    generated_artifact_version: Mapped[str | None] = mapped_column(nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)