public static List <Post> GetPosts(this IWallCategory wall,
ILogger logger,
DownloadingPostsOptions downloadingPostsOptions)
{
List <Post> res = new List <Post>();
ulong offset = 0;
int loadCount = downloadingPostsOptions.CountInFirstLoad;
while (true)
{
WallGetObject wallPosts = LoadPosts(wall, logger, downloadingPostsOptions, loadCount, offset);
foreach (var post in wallPosts.WallPosts)
{
res.Add(post);
}
if (wallPosts.WallPosts.Count < loadCount)
{
break;
}
offset += (ulong)loadCount;
loadCount = MaxLoadCount;
}
return(res);
}
private static WallGetObject LoadPosts(IWallCategory wall,
ILogger logger,
DownloadingPostsOptions downloadingPostsOptions,
int count,
ulong offset)
{
byte countOfLoadingAttempts = 1;
DateTime?firstDisconnectionTime = null;
while (countOfLoadingAttempts <= 5)
{
try
{
// получаем следующую сотню записей со стены
var wallPosts = wall.Get(new VkNet.Model.RequestParams.WallGetParams()
{
OwnerId = downloadingPostsOptions.WallId,
Offset = offset,
Count = Convert.ToUInt64(count),
Extended = false,
Filter = downloadingPostsOptions.WallFilter,
});
return(wallPosts);
}
catch (FlurlHttpException ex)
{
logger.LogInformation($"There's no connection to the Internet. Waiting for a reconnection.... Bz-z-z");
if (firstDisconnectionTime == null)
{
firstDisconnectionTime = DateTime.UtcNow;
}
if (DateTime.UtcNow - firstDisconnectionTime > downloadingPostsOptions.TimeForReconnection)
{
logger.LogInformation($"No Internet connection. Try to pray to God or just resolve connection problem.{NewLine}{ex}");
throw;
}
}
catch (CaptchaNeededException ex)
{
logger.LogInformation($"Captcha problem. Apply to poor indian children.{NewLine}{ex}");
throw;
}
catch (VkApiException vkApiEx)
{
if (countOfLoadingAttempts == 5)
{
logger.LogInformation($"VkApiException has occured.{NewLine}{vkApiEx.Message}");
throw;
}
countOfLoadingAttempts++;
}
catch (System.Exception ex)
{
logger.LogInformation($"Unpredictable exception happened. Say \"Vladik Spasi\".{NewLine}{ex}");
throw ex;
}
}
return(null);
}
/// <summary>
/// Загрузка постов по лимитам установленным в модели (Все посты за период ИЛИ заданное кол-во постов)
/// </summary>
/// <param name="wall"></param>
/// <param name="downloadingPostsOptions"></param>
/// <param name="monitoringLimits"></param>
/// <param name="logger"></param>
/// <returns></returns>
public static List <Post> GetPosts(this IWallCategory wall,
ILogger logger,
DownloadingPostsOptions downloadingPostsOptions,
MonitoringLimits monitoringLimits)
{
List <Post> res = new List <Post>();
int loadCount = downloadingPostsOptions.CountInFirstLoad;
bool allPostsReceived = true;
ulong offset = 0;
long? monitoringNumBorder = null;
DateTime? monitoringTimeBorder = null;
if (monitoringLimits.MonitoringLimit != null)
{
monitoringNumBorder = 0;
}
if (monitoringLimits.MonitoringPeriod != null)
{
monitoringTimeBorder = DateTime.UtcNow - monitoringLimits.MonitoringPeriod;
}
while (allPostsReceived)
{
WallGetObject wallPosts = LoadPosts(wall, logger, downloadingPostsOptions, loadCount, offset);
if (wallPosts.WallPosts.Count != 0)
{
if (monitoringNumBorder == null)
{
res.AddRange(SelectionLoadedPosts(wallPosts, ref allPostsReceived, monitoringTimeBorder.Value));
}
else if (monitoringTimeBorder == null)
{
res.AddRange(SelectionLoadedPosts(wallPosts, ref allPostsReceived, ref monitoringNumBorder, monitoringLimits.MonitoringLimit.Value));
}
else
{
res.AddRange(SelectionLoadedPosts(wallPosts, ref allPostsReceived, monitoringTimeBorder.Value, ref monitoringNumBorder, monitoringLimits.MonitoringLimit.Value));
}
if (wallPosts.WallPosts.Count < loadCount)
{
allPostsReceived = false;
}
offset += (ulong)loadCount;
loadCount = MaxLoadCount;
}
}
return(res);
}
public static List <Post> GetPosts(this IWallCategory wall,
ILogger logger,
DownloadingPostsOptions downloadingPostsOptions,
long border)
{
List <Post> res = new List <Post>();
bool allPostsReceived = true;
ulong offset = 0;
int loadCount = downloadingPostsOptions.CountInFirstLoad;
while (allPostsReceived)
{
WallGetObject wallPosts = LoadPosts(wall, logger, downloadingPostsOptions, loadCount, offset);
res.AddRange(SelectionLoadedPosts(wallPosts, ref allPostsReceived, border));
if (wallPosts.WallPosts.Count < downloadingPostsOptions.CountInFirstLoad)
{
allPostsReceived = false;
}
offset += (ulong)downloadingPostsOptions.CountInFirstLoad;
loadCount = MaxLoadCount;
}
return(res);
}
