private async Task LoadAudiosFromWall(AddAudioItem addItem, long ownerId, CancellationToken token)
{
int offset = 0;
const int maxCount = 100;
int allCount;
int curCount = 0;
Func <VKList <VKPost>, IEnumerable <VKAudio> > audioFilter = list => list.Items
.Where(x => x.Attachments != null)
.SelectMany(x => x.Attachments)
.Where(x => x.Type == "audio")
.Select(x => x.Audio)
.Where(x => !String.IsNullOrWhiteSpace(x.Url));
var lHead = await WallAPI.GetAsync(ownerId, count : maxCount, offset : offset, token : token);
if (lHead == null)
{
return;
}
foreach (var item in audioFilter(lHead))
{
token.ThrowIfCancellationRequested();
await addItem(item);
}
curCount += maxCount;
allCount = Convert.ToInt32(lHead.Count);
while (curCount < allCount)
{
offset = curCount;
var lCurr = await WallAPI.GetAsync(ownerId, count : maxCount, offset : offset, token : token);
if (lCurr == null)
{
break;
}
foreach (var item in audioFilter(lCurr))
{
token.ThrowIfCancellationRequested();
await addItem(item);
}
curCount += maxCount;
token.ThrowIfCancellationRequested();
}
}
private static async Task <IEnumerable <VKAudio> > GetAllAudioFromPost(long ownerId, CancellationToken token)
{
int offset = 0;
const int maxCount = 100;
int allCount;
int curCount = 0;
Func <VKList <VKPost>, IEnumerable <VKAudio> > audioFilter = list => list.Items
.Where(x => x.Attachments != null)
.SelectMany(x => x.Attachments)
.Where(x => x.Type == "audio")
.Select(x => x.Audio)
.Where(x => !String.IsNullOrWhiteSpace(x.Url));
var lHead = await WallAPI.GetAsync(ownerId, count : maxCount, offset : offset, token : token);
if (lHead == null)
{
return(null);
}
curCount += maxCount;
allCount = Convert.ToInt32(lHead.Count);
while (curCount < allCount)
{
offset = curCount;
var lCurr = await WallAPI.GetAsync(ownerId, count : maxCount, offset : offset, token : token);
if (lCurr == null)
{
break;
}
lHead.Items = lHead.Items.Union(lCurr.Items);
curCount += maxCount;
}
return(audioFilter(lHead));
}