public ApiResource(string name, IEnumerable <ApiForm> forms, IEnumerable <ApiResource> children, IEnumerable <ApiLink> links, ApiDefinition definition, Func <Type, object> convertState)
{
Links = links;
Definition = definition;
_convertState = convertState;
Name = name;
Forms = forms.ToDictionary(x => x.Name, x => x);
Children = children.GroupBy(x => x.Name).ToDictionary(x => x.Key, x => x.OfType <ApiResource>());
}
private async Task <ApiResource> GetAsync(Uri uri, IParseApiResponse parser, ApiDefinition definition)
{
var response = await _httpClient
.Start(uri)
.ModifyHeaders(x => x.Accept.Add(new MediaTypeWithQualityHeaderValue(parser.ContentType)))
.Send().ConfigureAwait(false);
_environment.Log("Api request to url: {0} finished with status code: {1}.", LogLevel.Debug, uri, response.StatusCode);
if (!response.IsSuccessStatusCode)
{
return(null);
}
return(await parser.Parse(response, definition).ConfigureAwait(false));
}
public async Task <ApiResource> ExecuteQuery(ApiDefinition definition, IEnumerable <IApiLinkTravelInstruction> instructions, IDictionary <string, object> data)
{
var parser = _responseParsers.FirstOrDefault(x => definition.Accepts.Contains(x.ContentType));
if (parser == null)
{
throw new ApiException($"Can't handle api named: {definition.Name}");
}
var currentResource = await GetAsync(definition.Location, parser, definition).ConfigureAwait(false);
if (currentResource == null)
{
_environment.Log("Can't find resource for url: {0}.", LogLevel.Error, definition.Location);
return(null);
}
foreach (var instruction in instructions)
{
var documentLink = instruction.TravelTo(currentResource);
var uri = documentLink.Href;
if (documentLink.Templated)
{
var template = new UriTemplate(uri.ToString());
var state = currentResource.StateAs <IDictionary <string, object> >();
foreach (var parameterName in template.GetParameterNames())
{
if (data.ContainsKey(parameterName))
{
template.SetParameter(parameterName, data[parameterName]);
}
else if (state.ContainsKey(parameterName))
{
template.SetParameter(parameterName, state[parameterName]);
}
}
uri = new Uri(template.Resolve(), UriKind.RelativeOrAbsolute);
}
if (!uri.IsAbsoluteUri)
{
uri = new Uri(definition.Location.Scheme + Uri.SchemeDelimiter + definition.Location.Host + (definition.Location.IsDefaultPort ? "" : string.Concat(":", definition.Location.Port)) + uri);
}
currentResource = await GetAsync(uri, parser, definition).ConfigureAwait(false);
if (currentResource == null)
{
_environment.Log("Can't find resource for url: {0}.", LogLevel.Error, uri);
return(null);
}
}
return(currentResource);
}
