"""Rename processing_status values to user-meaningful lifecycle states.

Old: pending, transcribed, extracted, published
New: not_started, queued, processing, error, complete

Revision ID: 008_rename_processing_status
Revises: 007_drop_review_columns
"""
from alembic import op

revision = "008_rename_processing_status"
down_revision = "007_drop_review_columns"
branch_labels = None
depends_on = None


def upgrade() -> None:
    # Add new enum values first
    op.execute("ALTER TYPE processingstatus ADD VALUE IF NOT EXISTS 'not_started'")
    op.execute("ALTER TYPE processingstatus ADD VALUE IF NOT EXISTS 'queued'")
    op.execute("ALTER TYPE processingstatus ADD VALUE IF NOT EXISTS 'processing'")
    op.execute("ALTER TYPE processingstatus ADD VALUE IF NOT EXISTS 'error'")
    op.execute("ALTER TYPE processingstatus ADD VALUE IF NOT EXISTS 'complete'")
    # Migrate existing rows
    op.execute("UPDATE source_videos SET processing_status = 'not_started' WHERE processing_status = 'pending'")
    op.execute("UPDATE source_videos SET processing_status = 'queued' WHERE processing_status = 'transcribed'")
    op.execute("UPDATE source_videos SET processing_status = 'processing' WHERE processing_status = 'extracted'")
    op.execute("UPDATE source_videos SET processing_status = 'complete' WHERE processing_status = 'published'")


def downgrade() -> None:
    op.execute("UPDATE source_videos SET processing_status = 'pending' WHERE processing_status = 'not_started'")
    op.execute("UPDATE source_videos SET processing_status = 'transcribed' WHERE processing_status = 'queued'")
    op.execute("UPDATE source_videos SET processing_status = 'extracted' WHERE processing_status = 'processing'")
    op.execute("UPDATE source_videos SET processing_status = 'published' WHERE processing_status = 'complete'")