"""Controlled source provenance and durable operation receipts.

Revision ID: 0002
Revises: 0001
Create Date: 2026-08-22
"""

from __future__ import annotations

import sqlalchemy as sa
from alembic import op

revision = "0002"
down_revision = "0001"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.add_column("repositories", sa.Column("source_ref_json", sa.JSON(), nullable=True))
    op.add_column("snapshots", sa.Column("source_provenance_json", sa.JSON(), nullable=True))
    op.create_table(
        "operation_receipts",
        sa.Column("operation_key", sa.String(length=200), nullable=False),
        sa.Column("request_fingerprint", sa.String(length=64), nullable=False),
        sa.Column("snapshot_id", sa.String(length=36), nullable=False),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
        sa.ForeignKeyConstraint(
            ["snapshot_id"],
            ["snapshots.id"],
            name=op.f("fk_operation_receipts_snapshot_id_snapshots"),
            ondelete="RESTRICT",
        ),
        sa.PrimaryKeyConstraint("operation_key", name=op.f("pk_operation_receipts")),
    )
    op.create_index(
        "ix_operation_receipts_snapshot",
        "operation_receipts",
        ["snapshot_id"],
    )


def downgrade() -> None:
    op.drop_index("ix_operation_receipts_snapshot", table_name="operation_receipts")
    op.drop_table("operation_receipts")
    op.drop_column("snapshots", "source_provenance_json")
    op.drop_column("repositories", "source_ref_json")