/// <summary>
/// 傳送對話
/// </summary>
/// <param name="chat">對話</param>
/// <param name="targetId">朋友或群組 Id</param>
/// <returns>執行結果</returns>
protected async Task<ExecuteResult> Chat(long targetId, Chat chat) {
this.DbContext.Chats.Add(chat);
try {
await this.DbContext.SaveChangesAsync();
await this.PushChatToClient(this.HubContext, targetId, chat);
}
catch (Exception ex) {
throw this.CreateResponseException(HttpStatusCode.InternalServerError, ex.Message);
}
return new ExecuteResult();
}
/// <summary> /// 推送對話到相關的客戶端 /// </summary> /// <param name="hub">SignalR HubContext</param> /// <param name="targetId">朋友或群組 Id</param> /// <param name="model">對話</param> protected abstract Task PushChatToClient(IHubContext hub, long targetId, Chat model);
/// <summary>
/// 推送對話到自己與特定朋友的客戶端
/// </summary>
/// <param name="hub">SignalR Hub</param>
/// <param name="friendId">朋友 Id</param>
/// <param name="model">對話</param>
protected override async Task PushChatToClient(IHubContext hub, long friendId, Chat model) {
hub.Clients.User(this.UserId.ToString()).receiveChat(friendId, model);
hub.Clients.User(friendId.ToString()).receiveChat(this.UserId, model);
await Task.FromResult<object>(null);
}