public ChatService()
{
users = new Dictionary <string, User>();
emailAddressToUserId = new Dictionary <string, string>();
friends = new Dictionary <string, List <string> >();
photoRecords = new List <PhotoRecord>();
photoContents = new Dictionary <string, PhotoContent>();
// Timer to expire any photos that were read more than
// 30 seconds ago
timer = new Timer(new TimerCallback((o) =>
{
List <PhotoRecord> expired = photoRecords
.Where((p) =>
{
return((p.Received != new DateTimeOffset()) &&
(DateTimeOffset.Now - p.Received > TimeSpan.FromSeconds(5)));
})
.ToList();
expired.ForEach((p) =>
{
p.Expired = true;
PhotoContent content = null;
if (photoContents.TryGetValue(p.PhotoContentSecretId, out content))
{
DeletePhotoContent(content.SecretId);
}
});
}),
null,
TimeSpan.FromSeconds(0),
TimeSpan.FromSeconds(1));
}
public Task CreatePhotoRecordAsync(PhotoRecord record)
{
PhotoContent content = new PhotoContent();
content.SecretId = Guid.NewGuid().ToString();
content.Uri = new Uri(String.Format("http://{0}", Guid.NewGuid()));
photoContents[content.SecretId] = content;
content.Id = photoContents.Count - 1;
photoRecords.Add(record);
record.Id = photoRecords.IndexOf(record);
record.Sent = DateTimeOffset.Now;
record.SenderName = App.CurrentUser.Name;
record.SenderUserId = App.CurrentUser.UserId;
record.PhotoContentSecretId = content.SecretId;
record.Expired = false;
// These two are returned but not stored in the
// datastore, we delete them later
record.UploadKey = String.Empty; // Doesn't matter in this case
record.Uri = content.Uri;
content.PhotoRecordId = record.Id;
return(Task.FromResult(0));
}
public Task <ObservableCollection <PhotoContent> > ReadPhotoContentAsync(string id)
{
PhotoContent content = null;
if (photoContents.TryGetValue(id, out content))
{
PhotoRecord record = photoRecords[content.PhotoRecordId];
record.Received = DateTimeOffset.Now;
}
ObservableCollection <PhotoContent> wrapper = new ObservableCollection <PhotoContent>();
wrapper.Add(content);
return(Task.FromResult <ObservableCollection <PhotoContent> >(wrapper));
}
public Task CreatePhotoRecordAsync(PhotoRecord record)
{
PhotoContent content = new PhotoContent();
content.SecretId = Guid.NewGuid().ToString();
content.Uri = new Uri(String.Format("http://{0}", Guid.NewGuid()));
photoContents[content.SecretId] = content;
content.Id = photoContents.Count - 1;
photoRecords.Add(record);
record.Id = photoRecords.IndexOf(record);
record.Sent = DateTimeOffset.Now;
record.SenderName = App.CurrentUser.Name;
record.SenderUserId = App.CurrentUser.UserId;
record.PhotoContentSecretId = content.SecretId;
record.Expired = false;
// These two are returned but not stored in the
// datastore, we delete them later
record.UploadKey = String.Empty; // Doesn't matter in this case
record.Uri = content.Uri;
content.PhotoRecordId = record.Id;
return Task.FromResult(0);
}
