private async Task <TModel> Create <TModel>(Type rootModelType, object model)
{
ThrowIfDisposed();
// set Id if unset
var modelId = model == null
? Guid.NewGuid()
: ModelRegistry.GetOrCreateId(model);
if (modelId == Guid.Empty)
{
modelId = Guid.NewGuid();
ModelRegistry.SetId(model, modelId);
}
// Create a new model instance if not already existing
if (model == null)
{
model = Activator.CreateInstance <TModel>();
ModelRegistry.SetId(model, modelId);
}
if (ModelRegistry.IsManagedModel(model))
{
throw new ManagedModelCreationException(model.GetType(), modelId);
}
// all unmanaged models in the object graph, including root
var allModels = ModelRegistry.IncludedModelsCreate(model);
foreach (var newModel in allModels)
{
var newResource = BuildModelResource(newModel);
// Update the model instance in the argument
var initialize = newModel.GetType().GetInitializeMethod();
initialize.Invoke(newModel, new object[] { newResource, this });
}
var rootResource = ModelRegistry.GetResource(model);
var includes = allModels.Where(x => x != model).Select(ModelRegistry.GetResource).ToArray();
if (Log.IsDebugEnabled())
{
Log.Debug(() => $"preparing to POST {rootResource.Type}:{{{rootResource.Id}}}");
foreach (var include in includes)
{
Log.Debug(() => $"preparing to POST included {include.Type}:{{{include.Id}}}");
}
}
var root = ResourceRootSingle.FromResource(rootResource, includes);
var request = await HttpRequestBuilder.CreateResource(root);
var response = await HttpClient.SendAsync(request).ConfigureAwait(false);
HttpResponseListener.CreateResource(response.StatusCode, root);
response.CheckStatusCode();
if (response.StatusCode == HttpStatusCode.Created)
{
var responseRoot = await response.GetContentModel <ResourceRootSingle>(JsonSettings);
// Update the model instance in the argument
var initialize = rootModelType.GetInitializeMethod();
initialize.Invoke(model, new object[] { responseRoot.Data, this });
}
// create and cache includes
await Task.WhenAll(allModels.Select(x => Task.Run(() =>
{
var resource = ModelRegistry.GetResource(x);
Cache.Update(resource.Id, x);
})));
return((TModel)model);
}
