public async Task <object> Call(IHttpHandler httpHandler, string baseUrl, HttpApiArguments arguments, HttpApiInstrumenter apiInstrumenter = null)
{
async void ApplyArguments(Func <IHttpArgumentHandler, string, object, Task> applier)
{
foreach (var item in ArgumentHandlers)
{
var name = item.Key;
if (arguments.TryGetValue(name, out var argument))
{
var handler = item.Value;
await applier(handler, name, argument);
}
}
}
HttpApiRequest GetRequest()
{
var request = new HttpApiRequest {
Url = Url.CreateUrl(baseUrl), Method = HttpMethod, Headers = Headers.ToList()
};
ApplyArguments(async(handler, name, argument) => await handler.ApplyArgument(request, name, argument));
if (!request.Headers.Exists(x => x.Name == "Content-Type") && request.Body != null)
{
var contentType = request.Body.Accept(new ContentTypeCalculator());
request.Headers.Add(new HttpHeader("Content-Type", contentType));
}
return(request);
}
async Task <HttpHandlerResponse> GetResponse(HttpApiRequest request)
{
return(await httpHandler.Call(request));
}
async Task <object> GetResult(HttpApiRequest request, HttpHandlerResponse response)
{
ApplyArguments(async(handler, name, argument) => await handler.ApplyArgument(response.ApiResponse, name, argument));
return(await ResponseHandler.HandleResponse(request, response.ApiResponse));
}
IHttpApiInstrumentation instrumentation = new DefaultHttpApiInstrumentation(GetRequest, GetResponse, GetResult);
if (apiInstrumenter != null)
{
instrumentation = apiInstrumenter(this, arguments, instrumentation);
}
return(await MakeCall(instrumentation));
}
public Task <object> Call(Invocation invocation)
{
if (!api.Endpoints.TryGetValue(invocation.Method, out var endpoint))
{
throw new Exception($"Endpoint not found for: \"{invocation.Method.DeclaringType.FullName}.{invocation.Method.Name}\". Perhaps you forgot to decorate your method with [Get], [Post], etc.");
}
var arguments = new HttpApiArguments(invocation.Method
.GetParameters()
.Select((x, i) => new { x.Name, Value = invocation.Arguments[i] })
.ToDictionary(x => x.Name, x => x.Value));
if (proxy is Api)
{
return(((Api)(object)proxy).Call(endpoint, httpHandler, baseUrl, arguments, apiInstrumenter));
}
else
{
var call = endpoint.Call(httpHandler, baseUrl, arguments, apiInstrumenter);
return(call);
}
}