/// <summary>
/// Загружает чат по указанному идентификатору и возвращает его.
/// </summary>
/// <param name="chatID">Идентификатор чата.</param>
/// <exception cref="CacheConversationException"/>
/// <exception cref="AuthorizationRequiredException"/>
public Task <IChat> GetChat(uint chatID)
{
return(chatsTasks.GetOrAdd(chatID, async id =>
{
if (cacheService == null)
{
cacheService = ServiceLocator.Current.GetInstance <IMessagesCacheService>();
}
Task <IChat> completedTask = null;
var request = new GetChatRequest
{
ChatID = id,
Fields = new List <VKUserFields> {
VKUserFields.photo_50, VKUserFields.sex, VKUserFields.online
}
};
for (int i = 0; i < MAX_ATTEMPTS_NUMBER; i++)
{
var response = await request.ExecuteAsync();
if (response.Error.ErrorType == VKErrors.AccessDenied || response.Error.ErrorType == VKErrors.AuthorizationFailed)
{
chatsTasks.TryRemove(id, out completedTask);
throw new AuthorizationRequiredException("Запрос провалился из-за необходимости выполнить авторизацию.");
}
if (response.Error.ErrorType != VKErrors.None)
{
if (i + 1 < MAX_ATTEMPTS_NUMBER)
{
await Task.Delay(1000);
}
continue;
}
IChat chat = new Chat();
chat.AdminID = response.Response.AdminID;
chat.ChatID = response.Response.ID;
chat.Title = response.Response.Title;
chat.Messages = new MessagesCollection(response.Response.ID);
chat.Users = new ObservableCollection <VKProfileChat>(response.Response.Users);
await cacheService.CacheConversation(chat);
chatsTasks.TryRemove(id, out completedTask);
return chat;
}
chatsTasks.TryRemove(id, out completedTask);
throw new CacheConversationException("Не удалось загрузить информацию о чате.");
}));
}
/// <summary>
/// Возвращает кортеж из беседы и коллекции сообщений.
/// </summary>
/// <param name="convID">Идентификатор беседы.</param>
public async Task <Tuple <CachedConversationOld, MessagesCollection> > GetMessages(long convID)
{
var pair = Conversations.FirstOrDefault(p => p.Key.ID == convID);
if (pair.Key != null && pair.Value != null)
{
return(new Tuple <CachedConversationOld, MessagesCollection>(pair.Key, pair.Value));
}
MessagesCollection msgs = null;
if (convID < 0)
{
msgs = new MessagesCollection((uint)-convID);
}
else
{
msgs = new MessagesCollection((ulong)convID);
}
var cache = await ServiceHelper.MessagesCacheService.GetConversationFromCache(convID);
if (cache != null)
{
for (int i = 0; i < cache.Users.Count; i++)
{
ulong userID = cache.Users[i].ID;
var user = CachedUsers.Values.FirstOrDefault(u => u.ID == userID);
if (user != null)
{
cache.Users[i] = user;
}
else
{
CachedUsers[userID] = cache.Users[i];
}
}
foreach (var msg in cache.CachedMessages)
{
if (cache.Users != null)
{
msg.Sender = cache.Users.FirstOrDefault(u => u.ID == msg.UserID);
}
msgs.Add(msg);
}
msgs.Unread = cache.Unread;
Conversations[cache] = msgs;
return(new Tuple <CachedConversationOld, MessagesCollection>(cache, msgs));
}
if (convID < 0)
{
bool success = false;
byte numOfRetries = 0;
while (!success && numOfRetries <= 3)
{
var request = new GetChatRequest()
{
ChatID = -convID,
IsSingle = true,
Fields = new List <VKUserFields> {
VKUserFields.photo_50, VKUserFields.online, VKUserFields.sex
}
};
var response = await request.ExecuteAsync();
if (response.Error.ErrorType == VKErrors.None)
{
success = true;
cache = new CachedConversationOld
{
ID = convID,
Title = response.Response.Title,
Users = new ObservableCollection <VKProfileChat>(response.Response.Users)
};
Conversations[cache] = msgs;
foreach (var user in cache.Users)
{
CachedUsers[user.ID] = user;
}
//msgs.UpdateSimilar();
return(new Tuple <CachedConversationOld, MessagesCollection>(cache, msgs));
}
else
{
numOfRetries++;
CoreHelper.SendInAppPush(
"Ошибка соединения.\nПовтор через " + 3 * numOfRetries + " секунд",
null, PopupMessageType.Warning);
await Task.Delay(3000 *numOfRetries);
}
}
return(null);
}
else
{
bool success = false;
byte numOfRetries = 0;
while (!success && numOfRetries <= 3)
{
var request = new GetUsersRequest {
UserID = (ulong)convID
};
var response = await request.ExecuteAsync();
if (response.Error.ErrorType == VKErrors.None)
{
success = true;
var user = response.Response[0];
cache = new CachedConversationOld
{
ID = convID,
Title = user.FullName,
Users = new ObservableCollection <VKProfileChat>
{
new VKProfileChat
{
ID = user.ID,
LastName = user.LastName,
FirstName = user.FirstName,
Photo50 = user.Photo50,
Online = user.Online,
Sex = user.Sex
}
}
};
Conversations[cache] = msgs;
CachedUsers[user.ID] = cache.Users[0];
return(new Tuple <CachedConversationOld, MessagesCollection>(cache, msgs));
}
else
{
numOfRetries++;
CoreHelper.SendInAppPush(
"Ошибка соединения.\nПовтор через " + 3 * numOfRetries + " секунд",
null, PopupMessageType.Warning);
await Task.Delay(3000 *numOfRetries);
}
}
return(null);
}
}
/// <summary>
/// Вызывается при получении новых сообщений через LongPoll.
/// </summary>
private async void VKLongPollService_MessagesReceived(object sender, MessagesReceivedEventArgs e)
{
var ids = new ulong[e.Messages.Count];
for (int i = 0; i < e.Messages.Count; i++)
{
ids[i] = e.Messages[i].MessageID;
}
List <VKMessage> resultMessages = null;
bool success = false;
byte numOfRetries = 0;
while (!success && numOfRetries <= 3)
{
var request = new GetByIDRequest {
MessageIDs = ids.ToList()
};
var response = await request.ExecuteAsync();
if (response.Error.ErrorType == VKErrors.None)
{
success = true;
resultMessages = response.Response.Items;
}
else
{
numOfRetries++;
CoreHelper.SendInAppPush(
"Ошибка соединения.\nПовтор через " + 3 * numOfRetries + " секунд",
null, PopupMessageType.Warning);
await Task.Delay(3000 *numOfRetries);
}
}
if (!success)
{
CoreHelper.SendInAppPush(
"Не удалось получить подробные сообщения",
"LongPoll", PopupMessageType.Error);
return;
}
var unknownUsers = new Dictionary <ulong, List <VKMessage> >();
var conversations = new Dictionary <long, List <VKMessage> >();
foreach (var msg in resultMessages)
{
long key = msg.IsChatMessage ? -msg.ChatID : (long)msg.UserID;
if (conversations.ContainsKey(key))
{
conversations[key].Add(msg);
}
else
{
var list = new List <VKMessage>();
list.Add(msg);
conversations[key] = list;
}
if (CachedUsers.ContainsKey(msg.UserID))
{
msg.Sender = CachedUsers[msg.UserID];
}
else
{
if (unknownUsers.ContainsKey(msg.UserID))
{
unknownUsers[msg.UserID].Add(msg);
}
else
{
var list = new List <VKMessage>();
list.Add(msg);
unknownUsers[msg.UserID] = list;
}
}
}
success = unknownUsers.Count == 0;
numOfRetries = 0;
while (!success && numOfRetries <= 3)
{
var usersRequest = new GetUsersRequest()
{
UserIDs = unknownUsers.Keys.ToList()
};
var usersResponse = await usersRequest.ExecuteAsync();
if (usersResponse.Error.ErrorType == VKErrors.None)
{
success = true;
foreach (var user in usersResponse.Response)
{
var sUser = new VKProfileChat()
{
ID = user.ID,
FirstName = user.FirstName,
LastName = user.LastName,
Online = user.Online,
Photo50 = user.Photo50
};
var list = unknownUsers[user.ID];
for (int i = 0; i < list.Count; i++)
{
list[i].Sender = sUser;
}
CachedUsers[sUser.ID] = sUser;
}
}
else
{
numOfRetries++;
CoreHelper.SendInAppPush(
"Ошибка соединения.\nПовтор через " + 3 * numOfRetries + " секунд",
null, PopupMessageType.Warning);
await Task.Delay(3000 *numOfRetries);
}
}
if (!success)
{
CoreHelper.SendInAppPush(
"Не удалось получить информацию о пользователях сообщений",
null, PopupMessageType.Error);
}
foreach (long convID in conversations.Keys)
{
var msgsList = conversations[convID];
var cachedConv = Conversations.Keys.FirstOrDefault(c => c.ID == convID);
if (cachedConv != null)
{
var list = Conversations[cachedConv];
foreach (var msg in msgsList)
{
list.Insert(0, msg);
}
}
else
{
MessagesCollection list = null;
if (convID < 0)
{
list = new MessagesCollection((uint)-convID);
}
else
{
list = new MessagesCollection((ulong)convID);
}
cachedConv = await ServiceHelper.MessagesCacheService.GetConversationFromCache(convID);
if (cachedConv != null)
{
foreach (var msg in cachedConv.CachedMessages)
{
list.Add(msg);
}
}
else
{
if (convID < 0)
{
success = false;
numOfRetries = 0;
while (!success && numOfRetries <= 3)
{
var request = new GetChatRequest()
{
ChatID = -convID,
IsSingle = true,
Fields = new List <VKUserFields> {
VKUserFields.photo_50, VKUserFields.online, VKUserFields.sex
}
};
var response = await request.ExecuteAsync();
if (response.Error.ErrorType == VKErrors.None)
{
success = true;
cachedConv = new CachedConversationOld
{
ID = convID,
Title = response.Response.Title,
Users = new ObservableCollection <VKProfileChat>(response.Response.Users),
CachedMessages = msgsList,
AdminID = response.Response.AdminID
};
Conversations[cachedConv] = list;
foreach (var user in cachedConv.Users)
{
CachedUsers[user.ID] = user;
}
}
else
{
numOfRetries++;
CoreHelper.SendInAppPush(
"Ошибка соединения.\nПовтор через " + 3 * numOfRetries + " секунд",
null, PopupMessageType.Warning);
await Task.Delay(3000 *numOfRetries);
}
}
}
else
{
success = false;
numOfRetries = 0;
while (!success && numOfRetries <= 3)
{
var request = new GetUsersRequest {
UserID = (ulong)convID
};
var response = await request.ExecuteAsync();
if (response.Error.ErrorType == VKErrors.None)
{
success = true;
var user = response.Response[0];
cachedConv = new CachedConversationOld
{
ID = convID,
Title = user.FullName,
Users = new ObservableCollection <VKProfileChat>
{
new VKProfileChat
{
ID = user.ID,
LastName = user.LastName,
FirstName = user.FirstName,
Photo50 = user.Photo50,
Online = user.Online
}
}
};
CachedUsers[user.ID] = cachedConv.Users[0];
}
else
{
numOfRetries++;
CoreHelper.SendInAppPush(
"Ошибка соединения.\nПовтор через " + 3 * numOfRetries + " секунд",
null, PopupMessageType.Warning);
await Task.Delay(3000 *numOfRetries);
}
}
}
}
foreach (var msg in msgsList)
{
list.Insert(0, msg);
}
//list.UpdateSimilar();
Conversations[cachedConv] = list;
}
await CacheConversation(cachedConv.ID);
WorkOnDialog(msgsList.Last());
var lastMsg = msgsList.LastOrDefault(m => m.Type == VKMessageType.Received);
if (lastMsg == null)
{
continue;
}
var navParameter = new NavigateToPageMessage
{
Page = AppViews.ConversationView,
Parameter = convID
};
CoreHelper.SendInAppPush(lastMsg.Body,
cachedConv.Title, PopupMessageType.Default,
lastMsg.Sender.Photo50, parameter: navParameter);
}
await ServiceHelper.MessagesCacheService.CacheDialogs(Dialogs.Take(20).ToList());
}