namespace _espe.api
{
	
	/**
	 */
	export async function session_from_stuff(
		stuff : {headers : Record<string, string>;}
	) : Promise<{key : string; value : lib_plankton.session.type_session}>
	{
		const key : string = (stuff.headers["X-Session-Key"] || stuff.headers["X-Session-Key".toLowerCase()]);
		const value : lib_plankton.session.type_session = await lib_plankton.session.get(key);
		return {"key": key, "value": value};
	}
	
	
	/**
	 */
	/*
	export function restriction_disjunction(
		left : lib_plankton.rest.type_restriction<any>,
		right : lib_plankton.rest.type_restriction<any>
	) : lib_plankton.rest.type_restriction<any>
	{
		return (
			(stuff) => Promise.any<boolean>(
				[
					left(stuff),
					right(stuff),
				]
			)
		);
	}
	 */
	
	
	/**
	 */
	export const restriction_none : lib_plankton.rest.type_restriction<any> = (
		(stuff) => Promise.resolve<boolean>(true)
	);
	
	
	/**
	 */
	export const restriction_logged_in : lib_plankton.rest.type_restriction<any> = (
		(stuff) => (
			session_from_stuff(stuff)
			.then(() => Promise.resolve<boolean>(true))
			.catch(() => Promise.resolve<boolean>(false))
		)
	);
	
	
	/**
	 */
	export function restriction_verification(
		extract_data : ((stuff) => any),
		extract_verification : ((stuff) => string)
	) : lib_plankton.rest.type_restriction<any>
	{
		return (
			(stuff) => _espe.helpers.verification_check(
				extract_data(stuff),
				extract_verification(stuff)
			)
		);
	}
	
}