/// <summary>
/// Turn a relative reference into an absolute url, based on the fullUrl of the parent resource
/// </summary>
/// <param name="nav"></param>
/// <param name="identity"></param>
/// <returns></returns>
/// <remarks>See https://www.hl7.org/fhir/bundle.html#references for more information</remarks>
public static ResourceIdentity MakeAbsolute(this ScopedNavigator nav, ResourceIdentity identity)
{
if (identity.IsRelativeRestUrl)
{
// Relocate the relative url on the base given in the fullUrl of the entry (if applicable)
var fullUrl = nav.FullUrl();
if (fullUrl != null)
{
var parentIdentity = new ResourceIdentity(fullUrl);
if (parentIdentity.IsAbsoluteRestUrl)
{
identity = identity.WithBase(parentIdentity.BaseUri);
}
else if (parentIdentity.IsUrn)
{
identity = new ResourceIdentity($"{parentIdentity}/{identity.Id}");
}
}
// Return the identity - will remain relative if we did not find a fullUrl
}
return(identity);
}
