/// <summary>
/// Asynchronously Starts the requests to download the users from the search pages.
/// </summary>
/// <param name="username">The username.</param>
/// <param name="threads">The max thread count.</param>
private async Task startRequestsAsync(string username, int threads)
{
status = Status.Preparing;
PageRequest pageRequest = new PageRequest();
ResultPage initialRequest = null;
while (initialRequest?.Success != true)
{
initialRequest = await pageRequest.GetPageUsersAsync(username, 1).ConfigureAwait(false);
}
// Limit of 500 pages or 10,000 users. If less than that then we divide user count by users per page (20)
int pages = initialRequest.SearchResultCount > 10000 ? 500 : (int)Math.Ceiling((double)(initialRequest.SearchResultCount / 20.0));
int pagesPerThread = pages <= threads ? 1 : pages / threads;
totalUsersSearching = initialRequest.SearchResultCount > 10000 ? 10000 : initialRequest.SearchResultCount;
List <List <int> > pagesLists = new List <List <int> >();
List <int> tempPages = new List <int>();
for (int i = 1; i <= pages; i++)
{
if (tempPages.Count < pagesPerThread)
{
tempPages.Add(i);
}
if (tempPages.Count >= pagesPerThread)
{
pagesLists.Add(new List <int>(tempPages));
tempPages.Clear();
}
}
pagesLists[0].AddRange(new List <int>(tempPages)); // Add rest of pages to first list
status = Status.DownloadingUsers;
foreach (var pageList in pagesLists)
{
var task = new Task(async() => await getUsersAsync(username, pageList).ConfigureAwait(false));
taskList.Add(task);
task.Start();
}
Task.WaitAll(taskList.ToArray());
}
/// <summary>
/// Asynchronously gets the users in the specified pages.
/// </summary>
/// <param name="username">The username.</param>
/// <param name="pages">The pages to check.</param>
private async Task getUsersAsync(string username, List <int> pages)
{
PageRequest pageRequest = new PageRequest();
for (int i = 0; i < pages.Count;)
{
ResultPage resultPage = await pageRequest.GetPageUsersAsync(username, pages[i]).ConfigureAwait(false);
if (resultPage.Success)
{
bool goodResult = true;
foreach (User user in resultPage.Users)
{
if (!user.ValidProfilePicUrl)
{
user.ProfilePic = Properties.Resources.default_profile_full;
}
if (user.ProfilePic == null || user.Id == "NOTFOUND")
{
goodResult = false;
}
}
// If the result was satisfactory then we
// add the users in the page to the rest of
// of the users found, and increment i to continue
if (goodResult)
{
semaphore.WaitOne();
addUsers(username, resultPage.Users);
semaphore.Release();
i++;
}
}
}
}
