public static AsyncMiddleware <TContext, TResult> Choose <TContext, TResult>(
this IEnumerable <AsyncMiddleware <TContext, TResult> > choices,
Func <TResult, TContext, Task <bool> > wasChosen,
AsyncMiddleware <TContext, TResult> defaultAction) =>
async(context, next, ct) =>
{
foreach (var middleware in choices)
{
var result = await middleware(context, next, ct);
if (await wasChosen(result, context))
{
return(result);
}
}
return(await defaultAction(context, next, ct));
};
public static AsyncMiddleware <TContext, TResult> Compose <TContext, TResult>(
this AsyncMiddleware <TContext, TResult> middleware,
params AsyncMiddleware <TContext, TResult>[] middlewares) =>
middleware.Singleton().Concat(middlewares).Compose();
public static AsyncMiddlewareFunc <TContext, TResult> Combine <TContext, TResult>(
this AsyncMiddleware <TContext, TResult> middleware,
SimpleAsyncMiddlewareFunc <TContext, TResult> func) =>
(context, ct) => middleware(context, (c, _) => func(c), ct);
public static AsyncMiddlewareFunc <TContext, TResult> Combine <TContext, TResult>(
this AsyncMiddleware <TContext, TResult> middleware,
AsyncMiddlewareFunc <TContext, TResult> func) =>
(context, ct) => middleware(context, func, ct);
