private async Task RefreshCheckOuts()
{
if (IsLoadingCheckOuts)
{
return;
}
Errors = "";
if (!IsUserLoggedIn)
{
return;
}
IsLoadingCheckOuts = true;
StringBuilder strBuilder = new StringBuilder();
List <UserCheckOuts> listCheckOuts = new List <UserCheckOuts>();
await TaskUtils.RunInParallel(_listUsersCur, async (user) => {
(string error, CheckedOutResult result) = await _apiService.CheckedOut(user);
if (!string.IsNullOrEmpty(error))
{
strBuilder.AppendLine($"Error for user {user.Nickname}: {error}");
}
else
{
//Always order by the due date. Order by ID after so that the order is deterministic
result.ListCheckedOutItems = result
.ListCheckedOutItems
.OrderBy(x => x.DueDate)
.ThenBy(x => x.Id)
.ToList();
//Try and preserve the old instance. If the user has multiple accounts and has a detail page open,
//we don't want that to contain stale data.
UserCheckOuts checkOutMatching = ListUserCheckOuts?.FirstOrDefault(x => x.User.Username == user.Username);
if (checkOutMatching == null)
{
listCheckOuts.Add(new UserCheckOuts(user, result, _navigationService));
}
else
{
checkOutMatching.User = user;
checkOutMatching.CheckedOut = result;
listCheckOuts.Add(checkOutMatching);
}
}
});
CheckedOutSummary = new CheckedOutSummary {
TotalItems = listCheckOuts.Sum(x => x.CheckedOut.TotalCheckedOut),
OutItems = listCheckOuts.Sum(x => x.CheckedOut.ListCheckedOutItems.Count(y => y.Status == CheckoutStatus.Out)),
DueSoonItems = listCheckOuts.Sum(x => x.CheckedOut.ListCheckedOutItems.Count(y => y.Status == CheckoutStatus.Coming_due)),
OverdueItems = listCheckOuts.Sum(x => x.CheckedOut.ListCheckedOutItems.Count(y => y.Status == CheckoutStatus.Overdue)),
NextDue = listCheckOuts.Min(x => x.CheckedOut.NextDueDate),
};
Errors = strBuilder.ToString();
ListUserCheckOuts = listCheckOuts
.OrderBy(x => x.User.Nickname)
.ToList();
IsLoadingCheckOuts = false;
}
public UserCheckOuts(User user, CheckedOutResult result, INavigationService navService) : base(navService)
{
User = user;
CheckedOut = result;
CheckedOutSummary = new CheckedOutSummary {
NextDue = result.NextDueDate,
TotalItems = result.TotalCheckedOut,
OutItems = result.ListCheckedOutItems.Count(x => x.Status == CheckoutStatus.Out),
DueSoonItems = result.ListCheckedOutItems.Count(x => x.Status == CheckoutStatus.Coming_due),
OverdueItems = result.ListCheckedOutItems.Count(x => x.Status == CheckoutStatus.Overdue),
};
}