var Node = require(“./node”);

var URL = function (val, index, currentFileInfo, isEvald) {

this.value = val;
this.currentFileInfo = currentFileInfo;
this.index = index;
this.isEvald = isEvald;

}; URL.prototype = new Node(); URL.prototype.type = “Url”; URL.prototype.accept = function (visitor) {

this.value = visitor.visit(this.value);

}; URL.prototype.genCSS = function (context, output) {

output.add("url(");
this.value.genCSS(context, output);
output.add(")");

}; URL.prototype.eval = function (context) {

var val = this.value.eval(context),
    rootpath;

if (!this.isEvald) {
    // Add the base path if the URL is relative
    rootpath = this.currentFileInfo && this.currentFileInfo.rootpath;
    if (rootpath &&
        typeof val.value === "string" &&
        context.isPathRelative(val.value)) {

        if (!val.quote) {
            rootpath = rootpath.replace(/[\(\)'"\s]/g, function(match) { return "\\" + match; });
        }
        val.value = rootpath + val.value;
    }

    val.value = context.normalizePath(val.value);

    // Add url args if enabled
    if (context.urlArgs) {
        if (!val.value.match(/^\s*data:/)) {
            var delimiter = val.value.indexOf('?') === -1 ? '?' : '&';
            var urlArgs = delimiter + context.urlArgs;
            if (val.value.indexOf('#') !== -1) {
                val.value = val.value.replace('#', urlArgs + '#');
            } else {
                val.value += urlArgs;
            }
        }
    }
}

return new URL(val, this.index, this.currentFileInfo, true);

}; module.exports = URL;