class StatusCode {
	private static statusCodeMap : Map<string, string> | null = null;

	private static initStatusCodeMap() {
		let map = new Map<string, string>();
		map.set('100', "Continue");
		map.set('101', "Switching Protocol");
		map.set('200', "OK");
		map.set('201', "Created");
		map.set('202', "Accepted");
		map.set('203', "Non-Authoritative Information");
		map.set('204', "No Content");
		map.set('205', "Reset Content");
		map.set('206', "Partial Content");
		map.set('300', "Multiple Choice");
		map.set('301', "Moved Permanently");
		map.set('302', "Found");
		map.set('303', "See Other");
		map.set('304', "Not Modified");
		map.set('305', "Use Proxy");
		map.set('306', "unused");
		map.set('307', "Temporary Redirect");
		map.set('308', "Permanent Redirect");
		map.set('400', "Bad Request");
		map.set('401', "Unauthorized");
		map.set('402', "Payment Required");
		map.set('403', "Forbidden");
		map.set('404', "Not Found");
		map.set('405', "Method Not Allowed");
		map.set('406', "Not Acceptable");
		map.set('407', "Proxy Authentication Required");
		map.set('408', "Request Timeout");
		map.set('409', "Conflict");
		map.set('410', "Gone");
		map.set('411', "Length Required");
		map.set('412', "Precondition Failed");
		map.set('413', "Payload Too Large");
		map.set('414', "URI Too Long");
		map.set('415', "Unsupported Media Type");
		map.set('416', "Requested Range Not Satisfiable");
		map.set('417', "Expectation Failed");
		map.set('418', "I'm a teapot");
		map.set('421', "Misdirected Request");
		map.set('426', "Upgrade Required");
		map.set('428', "Precondition Required");
		map.set('429', "Too Many Requests");
		map.set('431', "Request Header Fields Too Large");
		map.set('500', "Internal Server Error");
		map.set('501', "Not Implemented");
		map.set('502', "Bad Gateway");
		map.set('503', "Service Unavailable");
		map.set('504', "Gateway Timeout");
		map.set('505', "HTTP Version Not Supported");
		map.set('506', "Variant Also Negotiates");
		map.set('507', "Variant Also Negotiates");
		map.set('511', "Network Authentication Required");
		this.statusCodeMap = map;
	}

	public static getStatus(code : string) : string {
		let map = this.statusCodeMap;
		if (map == null) {
			this.initStatusCodeMap();
		}
		let tmp = this.statusCodeMap!;
		
		if (!(tmp.has(code))) {
			return 'unknown status';
		} else {
			return tmp.get(code)! as string;
		}
	}
}


export {
	StatusCode
}