private void HandleOnSnapshotJsCallback(string docId, string docJson)
{
Type docType = _docIdVsDocType[docId];
if (docType == null)
{
Logger.LogError($"No registered type found for doc id {docId}");
return;
}
DocumentUpdateCallback callback = _docIdVsSnapshotCallback[docId];
if (callback == null)
{
Logger.LogError($"No registered callback for dod id {docId}");
return;
}
try
{
var document = (IFirestoreDocument)JsonSerializer.Deserialize(docJson, docType,
new JsonSerializerOptions {
PropertyNameCaseInsensitive = true
});
callback.Invoke(document);
}
catch (Exception e)
{
Logger.LogError($"Failed to deserialize updated document:");
Logger.LogError(docJson);
Logger.LogError(e.Message);
}
}
public async Task <FirestoreOperationResult <T> > SubscribeForDocumentUpdates <T>(
string collection, string docId, DocumentUpdateCallback callback) where T : IFirestoreDocument
{
await Init();
if (_docIdVsDocType.ContainsKey(docId))
{
Logger.LogInformation($"doc id {docId} already subscribed for updated.");
return(new FirestoreOperationResult <T>()
{
Success = true
});
}
string operationResult = string.Empty;
_docIdVsDocType.Add(docId, typeof(T));
_docIdVsSnapshotCallback.Add(docId, callback);
var module = await firestoreModuleTask.Value;
try
{
operationResult =
await module.InvokeAsync <string>("onDocumentSnapshot",
collection, docId, "BlazorUtils.Firebase", "OnSnapshotJsCallback");
}
catch (Exception e)
{
Logger.LogError("Failed to subscribe for document updates");
Logger.LogError(e.Message);
}
return(ConvertJsonToResult <T>(operationResult));
}
