namespace _wiki_js_cli.helpers.log
{
	
	/**
	 */
	export enum enum_level {
		debug = "debug",
		info = "info",
		notice = "notice",
		warning = "warning",
		error = "error",
	}
	
	
	/**
	 */
	const _level_order : Array<enum_level> = [
		enum_level.debug,
		enum_level.info,
		enum_level.notice,
		enum_level.warning,
		enum_level.error,
	];
	
	
	/**
	 */
	var _threshold : enum_level = enum_level.info;
	
	
	/**
	 */
	export function setup(
		threshold : enum_level
	) : Promise<void>
	{
		_threshold = threshold;
		return Promise.resolve(undefined);
	}
	
	
	/**
	 */
	export function write(
		level : enum_level,
		incident : string,
		details : any
	) : void
	{
		if (_level_order.indexOf(level) < _level_order.indexOf(_threshold)) {
			// do nothing
		}
		else {
			process.stderr.write(
				_wiki_js_cli.helpers.string.coin(
					"\n<{{datetime}}> [{{level}}] {{incident}}\n{{details}}\n\n",
					{
						"datetime": (new Date()).toISOString(),
						"level": level,
						"incident": incident,
						"details": JSON.stringify(details, undefined, "\t"),
					}
				)
			);
		}
	}
	
}