"""Create the distributed alias-lock and compensating-rollback saga log."""

from __future__ import annotations

import sqlalchemy as sa
from alembic import op

revision = "0011_index_operations"
down_revision = "0010_citations"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.execute(sa.text("CREATE SCHEMA IF NOT EXISTS indexes"))
    op.create_table(
        "index_build_operations",
        sa.Column("id", sa.Uuid(), primary_key=True),
        sa.Column("alias_name", sa.String(128), nullable=False),
        sa.Column("operation", sa.String(32), nullable=False),
        sa.Column("status", sa.String(32), nullable=False),
        sa.Column("owner_token", sa.String(64), nullable=False),
        sa.Column("collection_name", sa.String(128), nullable=False),
        sa.Column("previous_collection", sa.String(128), nullable=True),
        sa.Column(
            "steps",
            sa.JSON(),
            nullable=False,
            server_default=sa.text("'[]'"),
        ),
        sa.Column("started_at", sa.DateTime(timezone=True), nullable=False),
        sa.Column("lease_until", sa.DateTime(timezone=True), nullable=False),
        sa.Column("finished_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("error_code", sa.String(128), nullable=True),
        sa.Column(
            "error_details",
            sa.JSON(),
            nullable=False,
            server_default=sa.text("'{}'"),
        ),
        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False),
        schema="indexes",
    )
    op.create_index(
        "ux_indexes_operations_active_alias",
        "index_build_operations",
        ["alias_name"],
        unique=True,
        schema="indexes",
        postgresql_where=sa.text("status = 'in_progress'"),
    )
    op.create_index(
        "ix_indexes_operations_alias_started",
        "index_build_operations",
        ["alias_name", "started_at"],
        schema="indexes",
    )


def downgrade() -> None:
    op.drop_index(
        "ix_indexes_operations_alias_started",
        table_name="index_build_operations",
        schema="indexes",
    )
    op.drop_index(
        "ux_indexes_operations_active_alias",
        table_name="index_build_operations",
        schema="indexes",
    )
    op.drop_table("index_build_operations", schema="indexes")
    op.execute(sa.text("DROP SCHEMA IF EXISTS indexes"))