exports.up = async function(knex) {
	// we want to be able to assign unidentified actors
	await knex.raw(`
		ALTER TABLE releases_actors
		ALTER COLUMN actor_id DROP NOT NULL
	`);

	await knex.schema.alterTable('releases_actors', (table) => {
		table.increments('id');
		table.string('gender');
	});
};

exports.down = async function(knex) {
	await knex.raw(`
		ALTER TABLE releases_actors
		ALTER COLUMN actor_id SET NOT NULL
	`);

	await knex.schema.alterTable('releases_actors', (table) => {
		table.dropColumn('id');
		table.dropColumn('gender');
	});
};