async Task <Type> EnsureComponentAsync(string assemblyName, string type)
{
//We need to inject new assembly to the router because it resolves which page to display.
IRouterEnvelope router = JSInteropMethods.Router;
IEnumerable <Assembly> additionalAssemblies = router.AdditionalAssemblies ?? Enumerable.Empty <Assembly>();
//Don't inject the assembly multiple times.
Assembly asm = additionalAssemblies.FirstOrDefault(x => string.Equals(x.GetName().Name, assemblyName, StringComparison.OrdinalIgnoreCase));
if (asm == default)
{
//Load assembly including its dependencies
IEnumerable <Assembly> newAssemblies = await AssemblyDependencyResolver.ResolveAsync(assemblyName);
if (!newAssemblies.Any())
{
return(null);
}
LoadServices(newAssemblies);
//Inject the assembly to the router.
ParameterView pv = ParameterView.FromDictionary(new Dictionary <string, object>()
{
{ nameof(IRouterEnvelope.AdditionalAssemblies), additionalAssemblies.Concat(newAssemblies).ToArray() }
});
await router.SetParametersAsync(pv);
asm = newAssemblies.First();
}
return(asm.GetType(type, true));
}
public override async Task ResolveAsync(string uri, bool isInterceptedLink)
{
//Get requested assembly based on the first path segment. This is highly specific, other applications might use different strategy.
string[] segments = new Uri(uri, UriKind.Absolute).Segments.Select(x => x.Trim('/')).Where(x => x.Length > 0).ToArray();
if (segments.Length < 2)
{
return;
}
string assemblyName = segments[0];
//We need to inject new assembly to the router because it resolves which page to display.
IRouterEnvelope router = base.Router;
IEnumerable <Assembly> additionalAssemblies = router.AdditionalAssemblies ?? Enumerable.Empty <Assembly>();
//Don't inject the assembly multiple times.
if (additionalAssemblies.Any(x => string.Equals(x.GetName().Name, assemblyName, StringComparison.OrdinalIgnoreCase)))
{
return;
}
//Load assembly including its dependencies
IEnumerable <Assembly> newAssemblies = await _assemblyDependencyResolver.ResolveAsync(assemblyName);
if (!newAssemblies.Any())
{
return;
}
//Register also services
foreach (Assembly asm in newAssemblies)
{
LoadServices(asm);
}
//Inject the assembly to the router.
ParameterView pv = ParameterView.FromDictionary(router.GetType().GetProperties()
.Where(x => x.CustomAttributes.Any(y => y.AttributeType == typeof(ParameterAttribute)))
.ToDictionary(pi => pi.Name, pi => string.Equals(pi.Name, nameof(IRouterEnvelope.AdditionalAssemblies), StringComparison.Ordinal)
? additionalAssemblies.Concat(newAssemblies).ToArray()
: pi.GetValue(router)));
await router.SetParametersAsync(pv);
}