namespace _aum.conf
{
	
	/**
	 */
	export type type_conf = {
		port : int;
		database_path : string;
		email : {
			mode : (
				"regular"
				|
				"redirect"
				|
				"console"
				|
				"drop"
			);
			smtp_credentials : {
				host : string;
				port : int;
				username : string;
				password : string;
			};
		};
		session_lifetime : int;
		session_drop_all_at_start : boolean;
		email_domain : string;
		email_numberbased_address_prefix : string;
		verification_secret : string;
		verbosity : (
			"none"
			|
			"debug"
			|
			"notice"
			|
			"info"
			|
			"warning"
			|
			"error"
		);
		admins : Array<
			{
				name : string;
				password : string;
			}
		>;
	};
	
	
	/**
	 */
	var _data : (null | type_conf) = null;
	
	
	/**
	 * @todo mandatory fields
	 */
	export async function load(
		path : (null | string)
	) : Promise<void>
	{
		const conf_raw : any = (
			(path !== null)
			? (lib_plankton.json.decode(await lib_plankton.file.read(path)) as type_conf)
			: {}
		);
		_data = {
			"port": (conf_raw["port"] ?? 7979),
			"email_domain": (conf_raw["email_domain"] ?? "example.org"),
			"email_numberbased_address_prefix": (conf_raw["email_numberbased_address_prefix"] ?? "member-"),
			"email": conf_raw["email"], // TODO: feiner
			"verification_secret": (conf_raw["verification_secret"] ?? "itsy_bitsy"),
			"session_lifetime": (conf_raw["session_lifetime"] ?? 900),
			"session_drop_all_at_start": true,
			"verbosity": (conf_raw["verbosity"] ?? "notice"),
			"database_path": (conf_raw["database_path"] ?? "data.sqlite"),
			"admins": (conf_raw["admins"] ?? []),
		};
		return Promise.resolve<void>(undefined);
	}
	
	
	/**
	 */
	export function get(
	) : any
	{
		if (_data === null) {
			throw (new Error("conf not loaded yet"));
		}
		else {
			return _data;
		}
	}
	
}