public static Uri GetHref(this LinkFactoryContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var baseUrl = context.GetBaseUrl();
var urlPath = context.GetUrlPath();
if (baseUrl == null && urlPath == null)
{
return(null);
}
if (baseUrl == null)
{
return(urlPath);
}
if (urlPath == null)
{
return(baseUrl);
}
Uri.TryCreate(baseUrl, urlPath, out Uri absoluteUrl);
return(absoluteUrl);
}
public static Uri GetBaseUrl(this LinkFactoryContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
return(context.Get(LinkFactoryContext.BaseUrlKey) as Uri);
}
public Link Create(LinkFactoryContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
return(DoCreate(context));
}
public static LinkFactoryContext SetUrlPath(this LinkFactoryContext context, Uri value)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
context.Set(LinkFactoryContext.UrlPathKey, value);
return(context);
}
public static LinkMapper <TLink> MapTo <TLink>(this LinkFactoryContext context, Func <Uri, TLink> createHandler)
where TLink : Link
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (createHandler == null)
{
throw new ArgumentNullException(nameof(createHandler));
}
var link = createHandler.Invoke(context.GetHref());
return(new LinkMapper <TLink>(context, link));
}
protected virtual Link DoCreate(LinkFactoryContext context)
{
return(context.MapTo(h => new Link(h.ToString())).Link);
}
public LinkMapper(LinkFactoryContext context, TLink link)
{
Context = context ?? throw new ArgumentNullException(nameof(context));
Link = link ?? throw new ArgumentNullException(nameof(link));
}
