"""Add lightweight job table for sprint-3 async architecture foundation."""

from alembic import op
import sqlalchemy as sa


revision = "20260611212435"
down_revision = "202601120001"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.create_table(
        "jobs",
        sa.Column("id", sa.UUID(as_uuid=True), primary_key=True),
        sa.Column("job_type", sa.Text(), nullable=False),
        sa.Column("status", sa.Text(), nullable=False, server_default="queued"),
        sa.Column("project_id", sa.UUID(as_uuid=True), sa.ForeignKey("projects.id", ondelete="CASCADE"), nullable=False),
        sa.Column("dataset_id", sa.UUID(as_uuid=True), sa.ForeignKey("datasets.id", ondelete="SET NULL"), nullable=True),
        sa.Column("input_dataset_id", sa.UUID(as_uuid=True), sa.ForeignKey("datasets.id", ondelete="SET NULL"), nullable=True),
        sa.Column("output_dataset_id", sa.UUID(as_uuid=True), sa.ForeignKey("datasets.id", ondelete="SET NULL"), nullable=True),
        sa.Column("parameters_json", sa.JSON(), nullable=False),
        sa.Column("result_json", sa.JSON(), nullable=True),
        sa.Column("error_message", sa.Text(), nullable=True),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("NOW()")),
        sa.Column("started_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("finished_at", sa.DateTime(timezone=True), nullable=True),
    )

    op.create_index("ix_jobs_project_id", "jobs", ["project_id"])
    op.create_index("ix_jobs_status", "jobs", ["status"])


def downgrade() -> None:
    op.drop_index("ix_jobs_status", table_name="jobs")
    op.drop_index("ix_jobs_project_id", table_name="jobs")
    op.drop_table("jobs")