/// <summary>
/// Get All Post of a User icluding Post of Friends and excluding Hidden Post
/// </summary>
/// <param name="userId">Id of a User</param>
/// <returns></returns>
public IEnumerable <PostViewModel> GetAllPosts(string userId = null)
{
if (userId == null)
{
var user = userBLL.GetUserByUserName(User.Identity.Name);
userId = user.Id;
}
var postList = postBLL.GetAllPost(userId);
return(postList);
}