//registers modelcopies of selected items to the client
public async Task <IActionResult> Borrow()
{
List <SessionModel> modelsToBorrow = HttpContext.Session.GetObject <List <SessionModel> >("Items") ?? new List <SessionModel>();
Client client = await _cm.FindByEmailAsync(User.Identity.Name);
List <ModelCopy> alreadyBorrowed = await _identityMap.FindModelCopiesByClient(client.clientId);
//Borrow all available copies of selected items
Boolean successfulReservation = await _identityMap.ReserveModelCopiesToClient(modelsToBorrow, client.clientId);
//if not all items were borrowed, determine which ones were not borrowed and display them to the client
if (!successfulReservation)
{
List <ModelCopy> nowBorrowed = await _identityMap.FindModelCopiesByClient(client.clientId);
HashSet <ModelCopy> borrowed = nowBorrowed.Except(alreadyBorrowed).ToHashSet();
List <SessionModel> notBorrowed = modelsToBorrow
.Select(m => new { Id = m.Id, MT = m.ModelType })
.Except(borrowed
.Select(m => new { Id = m.modelID, MT = m.modelType }))
.Select(c => new SessionModel {
Id = c.Id, ModelType = c.MT
})
.ToList();
HttpContext.Session.SetObject("Items", notBorrowed);
HttpContext.Session.SetInt32("ItemsCount", notBorrowed.Count);
return(RedirectToAction(nameof(Index)));
}
//TODO Return to Home?
HttpContext.Session.SetObject("Items", null);
HttpContext.Session.SetInt32("ItemsCount", 0);
return(RedirectToAction(nameof(Index)));
}
