module nl.netsoj.chris.blog.url;

import std.exception;

import vibe.inet.url;

URL resolveURL(URL source, string other) {
	URL otherUrl = URL(other);
	if (otherUrl.schema.length > 0 || otherUrl.host.length > 0) {
		return otherUrl;
	}
	
	if (otherUrl.schema.length == 0) {
		enforce(source.schema.length > 0, "Source URL must have a scheme to resolve the other URL");
		otherUrl.schema = source.schema;
	}
	
	if (otherUrl.host.length == 0) {
		otherUrl.host = source.host;
		otherUrl.port = source.port;
		if (!otherUrl.path.absolute) {
			otherUrl.path = source.path ~ otherUrl.path;
		}
	}
	
	return otherUrl;
}