import { URISchemeHandler, URIComponents, URIOptions } from “../uri”; import { pctEncChar, SCHEMES } from “../uri”;

export interface URNComponents extends URIComponents {

nid?:string;
nss?:string;

}

export interface URNOptions extends URIOptions {

nid?:string;

}

const NID$ = “(?:[0-9A-Za-z]{1,31})”; const PCT_ENCODED$ = “(?:\%[0-9A-Fa-f]{2})”; const TRANS$$ = “[0-9A-Za-z\(\)+\,\-\.\:\=\@\;\$_\!*\'\/\?\#]”; const NSS$ = “(?:(?:” + PCT_ENCODED$ + “|” + TRANS$$ + “)+)”; const URN_SCHEME = new RegExp(“^urn\:(” + NID$ + “)$”); const URN_PATH = new RegExp(“^(” + NID$ + “)\:(” + NSS$ + “)$”); const URN_PARSE = /^([^:]+):(.*)/; const URN_EXCLUDED = /[x00-x20\"&<\>^`{|}~x7F-xFF]/g;

//RFC 2141 const handler:URISchemeHandler<URNComponents,URNOptions> = {

scheme : "urn",

parse : function (components:URIComponents, options:URNOptions):URNComponents {
        const matches = components.path && components.path.match(URN_PARSE);
        let urnComponents = components as URNComponents;

        if (matches) {
                const scheme = options.scheme || urnComponents.scheme || "urn";
                const nid = matches[1].toLowerCase();
                const nss = matches[2];
                const urnScheme = `${scheme}:${options.nid || nid}`;
                const schemeHandler = SCHEMES[urnScheme];

                urnComponents.nid = nid;
                urnComponents.nss = nss;
                urnComponents.path = undefined;

                if (schemeHandler) {
                        urnComponents = schemeHandler.parse(urnComponents, options) as URNComponents;
                }
        } else {
                urnComponents.error = urnComponents.error || "URN can not be parsed.";
        }

        return urnComponents;
},

serialize : function (urnComponents:URNComponents, options:URNOptions):URIComponents {
        const scheme = options.scheme || urnComponents.scheme || "urn";
        const nid = urnComponents.nid;
        const urnScheme = `${scheme}:${options.nid || nid}`;
        const schemeHandler = SCHEMES[urnScheme];

        if (schemeHandler) {
                urnComponents = schemeHandler.serialize(urnComponents, options) as URNComponents;
        }

        const uriComponents = urnComponents as URIComponents;
        const nss = urnComponents.nss;
        uriComponents.path = `${nid || options.nid}:${nss}`;

        return uriComponents;
},

};

export default handler;