"""phase6 hitl: job_corrections + approval columns

Revision ID: 3b1f2c9a4d56
Revises: ff8c14fbf8a0
Create Date: 2026-04-25 14:30:00.000000
"""

from collections.abc import Sequence

import sqlalchemy as sa
from alembic import op

# revision identifiers, used by Alembic.
revision: str = "3b1f2c9a4d56"
down_revision: str | None = "ff8c14fbf8a0"
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None


def upgrade() -> None:
    with op.batch_alter_table("jobs") as batch:
        batch.add_column(
            sa.Column(
                "approved",
                sa.Boolean(),
                nullable=False,
                server_default=sa.false(),
            )
        )
        batch.add_column(sa.Column("reviewed_by", sa.String(length=128), nullable=True))
        batch.add_column(sa.Column("reviewed_at", sa.DateTime(timezone=True), nullable=True))

    op.create_table(
        "job_corrections",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("job_id", sa.Uuid(), nullable=False),
        sa.Column("field_path", sa.String(length=256), nullable=False),
        sa.Column("old_value", sa.JSON(), nullable=True),
        sa.Column("new_value", sa.JSON(), nullable=True),
        sa.Column("corrected_by", sa.String(length=128), nullable=True),
        sa.Column("reason", sa.String(length=512), nullable=True),
        sa.Column("corrected_at", sa.DateTime(timezone=True), nullable=False),
        sa.ForeignKeyConstraint(["job_id"], ["jobs.job_id"], ondelete="CASCADE"),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(
        op.f("ix_job_corrections_job_id"),
        "job_corrections",
        ["job_id"],
        unique=False,
    )


def downgrade() -> None:
    op.drop_index(op.f("ix_job_corrections_job_id"), table_name="job_corrections")
    op.drop_table("job_corrections")
    with op.batch_alter_table("jobs") as batch:
        batch.drop_column("reviewed_at")
        batch.drop_column("reviewed_by")
        batch.drop_column("approved")