public static async Task <T> Listen <T>(DatabaseReference db, string key, FirebaseEventType eventType,
int timeout = 30000)
{
var result = default(T);
void handler(object o, ChildChangedEventArgs args)
{
if (args.DatabaseError != null)
{
Debug.LogError(args.DatabaseError.Message);
return;
}
if (key == args.Snapshot.Key)
{
switch (eventType)
{
case FirebaseEventType.Added:
db.ChildAdded -= handler;
break;
case FirebaseEventType.Changed:
db.ChildChanged -= handler;
break;
default:
throw new ArgumentOutOfRangeException(nameof(eventType), eventType, null);
}
//Debug.Log( args.Snapshot.GetRawJsonValue().Replace("{", Environment.NewLine + "{"));
result = JsonConvert.DeserializeObject <T>(args.Snapshot.GetRawJsonValue());
Debug.Log(JsonConvert.SerializeObject(result, Formatting.Indented));
}
}
switch (eventType)
{
case FirebaseEventType.Added:
db.ChildAdded += handler;
break;
case FirebaseEventType.Changed:
db.ChildChanged += handler;
break;
default:
throw new ArgumentOutOfRangeException(nameof(eventType), eventType, null);
}
var elapsed = 0;
const int increment = 200;
while (result == null)
{
await Task.Delay(increment);
elapsed += increment;
if (elapsed > timeout)
{
Debug.LogError("Timed out while listening for new battle context");
return(default(T));
}
}
return(result);
}
/// <summary>
/// Initializes a new instance of the <see cref="FirebaseEvent{T}"/> class.
/// </summary>
/// <param name="key"> The key of the object. </param>
/// <param name="obj"> The object. </param>
/// <param name="eventType"> The event type. </param>
public FirebaseEvent(string key, T obj, FirebaseEventType eventType, FirebaseEventSource eventSource)
: base(key, obj)
{
this.EventType = eventType;
this.EventSource = eventSource;
}
