public HUpdate(int cycle, HElement page, object state, TimeSpan elapsed)
{
this.Cycle = cycle;
this.Page = page;
this.State = state;
this.Elapsed = elapsed;
}
public static void PushUpdate(string frame, int cycle, HElement page, object state, TimeSpan elapsed)
{
for (;;)
{
HFrame hframe;
if (Frames.TryGetValue(frame, out hframe))
{
var nextFrame = hframe.With(updates: hframe.Updates.Add(cycle, new HUpdate(cycle, page, state, elapsed)));
if (Frames.TryUpdate(frame, nextFrame, hframe))
{
return;
}
}
else
{
if (Frames.TryAdd(frame, new HFrame(cycle, ImmutableDictionary <int, HUpdate> .Empty.Add(cycle, new HUpdate(cycle, page, state, elapsed)))))
{
return;
}
}
}
}
static HElement FirstHtmlTransformer(HElement element)
{
return(new HElement("html", element.Element("head"), new HElement("body", "")));
}
public static TResponse Process <TRequest, TResponse, TState>(TRequest request, IRequestAdapter <TRequest, TResponse> requestAdapter, Func <TState, JsonData[], TRequest, HtmlResult <HElement> > page) where TState : class, new()
{
if (requestAdapter.IsGetMethod(request))
{
var result = page(new TState(), Array <JsonData> .Empty, request);
var rawResponse = requestAdapter.RawResponse(result);
if (rawResponse != null)
{
return(rawResponse);
}
var html = result.Html;
var head = html.Element("head") ?? new HElement("head");
var startHead = new HElement(head.Name,
head.Attributes,
Scripts(frame: Guid.NewGuid().ToString(), refreshPeriod: result.RefreshPeriod ?? TimeSpan.FromSeconds(10)),
head.Nodes
);
var firstHtmlTransformer = result.As <HtmlResult>()?.FirstHtmlTransformer ?? FirstHtmlTransformer;
html = firstHtmlTransformer(new HElement("html", startHead, html.Nodes.Where(node => node.As <HElement>()?.Name.LocalName != "head")));
var toHtmlText = result.As <HtmlResult>()?.ToHtmlText ?? ToHtmlText;
return(requestAdapter.ToResponse(toHtmlText(html), "text/html", result));
}
else
{
var json = Parse(requestAdapter.Content(request));
var route = requestAdapter.Frame(request) ?? "<null>";
var frame = route + ":" + json.JPath("frame")?.ToString();
var cycle = ConvertHlp.ToInt(json.JPath("cycle")).OrDefault(0);
var prev = PopUpdate(frame, cycle);
var json_commands = (json.JPath("commands").As <JArray>()?.Select(j => new JsonData(j)).ToArray()).OrEmpty();
HtmlResult <HElement> result = null;
var watch = System.Diagnostics.Stopwatch.StartNew();
try
{
result = page(prev?.Item2?.State.As <TState>() ?? new TState(), json_commands, request);
}
catch (Exception exc) //HACK ловятся все ошибки для того, чтобы не зациклилась страница. Добавить обработку ошибок на сторону js.
{
result = new HtmlResult <HElement> {
State = prev.Item2.State, Html = prev.Item2.Page
};
}
watch.Stop();
var rawResponse = requestAdapter.RawResponse(result);
if (rawResponse != null)
{
return(rawResponse);
}
var isPartial = result.Html.Name.LocalName != "html";
var toBody = isPartial ? html => html : (Func <HElement, HElement>)(html => html?.Element("body"));
var js_updates = HtmlJavaScriptDiffer.JsSync(new HElementProvider(), toBody(prev?.Item2?.Page), toBody(result.Html)).ToArray();
var jupdate = new Dictionary <string, object>()
{
{ "cycle", prev.Item1 }, { "prev_cycle", cycle }, { "processed_commands", json_commands.Length }, { "updates", js_updates }
};
PushUpdate(frame, prev.Item1, result.Html, result.State, watch.Elapsed);
return(requestAdapter.ToResponse(JsonConvert.SerializeObject(jupdate), "application/javascript", result));
}
}
static string ToHtmlText(HElement element)
{
return(element?.ToHtmlText());
}