"""Add review API fields and review audits table.

Revision ID: 0005_review_api_and_audit
Revises: 0004_medium_ai_pipeline
Create Date: 2026-08-28

"""

import sqlalchemy as sa
from alembic import op

revision: str = "0005_review_api_and_audit"
down_revision: str | None = "0004_medium_ai_pipeline"
branch_labels: str | None = None
depends_on: str | None = None


def upgrade() -> None:
    op.add_column(
        "scoring_runs",
        sa.Column("version", sa.Integer(), nullable=False, server_default="1"),
    )
    op.add_column("scoring_runs", sa.Column("effective_score", sa.Integer(), nullable=True))
    op.add_column("scoring_runs", sa.Column("review_decision", sa.String(length=32), nullable=True))
    op.add_column("scoring_runs", sa.Column("reviewed_by", sa.String(length=255), nullable=True))
    op.add_column(
        "scoring_runs", sa.Column("reviewed_at", sa.DateTime(timezone=True), nullable=True)
    )
    op.add_column("scoring_runs", sa.Column("review_note", sa.String(length=2000), nullable=True))

    op.drop_constraint("uq_outbox_run_event_type", "outbox_events", type_="unique")
    op.create_index(
        "uq_outbox_terminal_run",
        "outbox_events",
        ["run_id", "event_type"],
        unique=True,
        postgresql_where=sa.text("event_type = 'lead_scoring.run.terminal'"),
    )

    op.create_table(
        "review_audits",
        sa.Column("id", sa.String(length=36), nullable=False),
        sa.Column("run_id", sa.String(length=36), nullable=False),
        sa.Column("tenant_id", sa.String(length=255), nullable=False),
        sa.Column("decision", sa.String(length=32), nullable=False),
        sa.Column("actor_id", sa.String(length=255), nullable=False),
        sa.Column("actor_role", sa.String(length=32), nullable=False),
        sa.Column("idempotency_key", sa.String(length=255), nullable=False),
        sa.Column("payload_hash", sa.String(length=64), nullable=False),
        sa.Column("previous_version", sa.Integer(), nullable=False),
        sa.Column("new_version", sa.Integer(), nullable=False),
        sa.Column("calculated_score", sa.Integer(), nullable=True),
        sa.Column("effective_score", sa.Integer(), nullable=False),
        sa.Column("note", sa.String(length=2000), nullable=True),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            server_default=sa.text("now()"),
            nullable=False,
        ),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint(
            "tenant_id",
            "idempotency_key",
            name="uq_review_audits_tenant_idempotency",
        ),
    )


def downgrade() -> None:
    op.drop_table("review_audits")
    op.drop_index(
        "uq_outbox_terminal_run",
        "outbox_events",
        postgresql_where=sa.text("event_type = 'lead_scoring.run.terminal'"),
    )
    # Clean up non-terminal review outbox events before restoring pre-0005 unique constraint
    op.execute(sa.text("DELETE FROM outbox_events WHERE event_type = 'lead_scoring.run.reviewed'"))
    op.create_unique_constraint(
        "uq_outbox_run_event_type", "outbox_events", ["run_id", "event_type"]
    )
    op.drop_column("scoring_runs", "review_note")
    op.drop_column("scoring_runs", "reviewed_at")
    op.drop_column("scoring_runs", "reviewed_by")
    op.drop_column("scoring_runs", "review_decision")
    op.drop_column("scoring_runs", "effective_score")
    op.drop_column("scoring_runs", "version")