public async IAsyncEnumerable <EntityState> GetStatesAsync([EnumeratorCancellation] CancellationToken cancellationToken = default)
{
var response = await HttpClient.GetAsync("states", HttpCompletionOption.ResponseHeadersRead, cancellationToken);
response.EnsureSuccessStatusCode();
var jsonSerializer = JsonSerializer.Create(JsonSerializerSettings);
using (var responseStream = await response.Content.ReadAsStreamAsync())
using (var streamReader = new StreamReader(responseStream))
using (var reader = new JsonTextReader(streamReader))
{
while (await reader.ReadAsync(cancellationToken))
{
if (reader.TokenType == JsonToken.StartObject)
{
var jObject = await JObject.LoadAsync(reader, cancellationToken);
var entityId = jObject["entity_id"]?.Value <string>() ?? throw new InvalidOperationException();
var state = jObject["state"]?.ToString();
var attributes = jObject["attributes"]?.ToObject <Dictionary <string, object> >() ?? throw new InvalidOperationException();
StateCodeGenerator.Observe(entityId, state, attributes);
var entityStateType = StateProvider.GetEntityStateType(entityId, attributes);
var entityState = (EntityState)jObject.ToObject(entityStateType, jsonSerializer);
yield return(entityState);
}
}
}
}