export class Url {
    public static isValidDomain(domain: string): boolean {

        let regex = new RegExp(/^(?!\-)(?:[a-zA-Z\d\-]{0,62}[a-zA-Z\d]\.){1,126}(?!\d+)[a-zA-Z\d]{1,63}$/);

        return (regex.test(domain))
    }

    public static parse(url: string): URL {
        try {
            let parsed = new URL(url);
            return parsed;
        } catch (e) {
            let url = new URL("invalid:");
            return url
        }
    }

    public static isValidUrl(url: string): boolean {
        let regex = new RegExp("^(?:(?:https?|ftp)://)(?:\\S+(?::\\S*)?@)?(?:" +
            // IP address exclusion
            // private & local networks
            "(?!(?:10|127)(?:\\.\\d{1,3}){3})" +
            "(?!(?:169\\.254|192\\.168)(?:\\.\\d{1,3}){2})" +
            "(?!172\\.(?:1[6-9]|2\\d|3[0-1])(?:\\.\\d{1,3}){2})" +
            // IP address dotted notation octets
            // excludes loopback network 0.0.0.0
            // excludes reserved space >= 224.0.0.0
            // excludes network & broacast addresses
            // (first & last IP address of each class)
            "(?:[1-9]\\d?|1\\d\\d|2[01]\\d|22[0-3])" +
            "(?:\\.(?:1?\\d{1,2}|2[0-4]\\d|25[0-5])){2}" +
            "(?:\\.(?:[1-9]\\d?|1\\d\\d|2[0-4]\\d|25[0-4]))" +
            "|" +
            // host name
            "(?:(?:[a-z\\u00a1-\\uffff0-9]-*)*[a-z\\u00a1-\\uffff0-9]+)" +
            // domain name
            "(?:\\.(?:[a-z\\u00a1-\\uffff0-9]-*)*[a-z\\u00a1-\\uffff0-9]+)*" +
            // TLD identifier
            "(?:\\.(?:[a-z\\u00a1-\\uffff]{2,}))" +
            // TLD may end with dot
            ".?" +
            ")" +
            // port number
            "(?::\\d{2,5})?" +
            // resource path
            "(?:[/?#]\\S*)?" +
            "$", "i"
        );

        return regex.test(url);
    }
}