exports.up = async function(knex) {
	const orphanedAvatars = await knex('actors_avatars')
		.whereNull('profile_id');

	if (orphanedAvatars.length > 0) {
		console.log(`Deleting ${orphanedAvatars.length} actors_avatars rows with no profile_id`);
	}

	await knex('actors_avatars')
		.whereNull('profile_id')
		.delete();

	await knex.raw(`
		DROP INDEX IF EXISTS unique_main_avatars;
		ALTER TABLE actors_avatars ALTER COLUMN profile_id SET NOT NULL;
	`);
};

exports.down = async function(knex) {
	await knex.raw(`
		ALTER TABLE actors_avatars ALTER COLUMN profile_id DROP NOT NULL;
		CREATE UNIQUE INDEX unique_main_avatars ON actors_avatars (actor_id) WHERE (profile_id IS NULL);
	`);
};