public void UpdateInventory()
{
foreach (var cmd in context.GetPartCommands())
{
var item = context.Inventory.Single(i =>
i.PartTypeId == cmd.PartTypeId);
var oldCount = item.Count;
if (cmd.Command == PartCountOperation.Add)
{
item.Count += cmd.PartCount;
}
else
{
item.Count -= cmd.PartCount;
}
var transaction = context.BeginTransaction();
try
{
context.UpdateInventoryItem(item.PartTypeId,
item.Count, transaction);
context.DeletePartCommand(cmd.Id, transaction);
transaction.Commit();
}
catch
{
transaction.Rollback();
item.Count = oldCount;
throw;
}
}
}
public async Task UpdateInventory()
{
foreach (var cmd in await _context.GetPartCommands())
{
var item = _context.Inventory.Single(i => i.PartTypeId == cmd.PartTypeId);
var oldCount = item.Count;
if (cmd.Command == PartCountOperation.Add)
{
item.Count += cmd.PartCount;
}
else
{
item.Count -= cmd.PartCount;
}
using (var transaction = _context.BeginTransaction())
{
try
{
await _context.UpdateInventoryItem(item.PartTypeId, item.Count, transaction);
await _context.DeletePartCommand(cmd.Id, transaction);
transaction.Commit();
}
catch
{
transaction.Rollback();
item.Count = oldCount;
throw;
}
}
}
var orders = await _context.GetOrders();
foreach (var item in _context.Inventory)
{
if (item.Count < item.OrderThreshold &&
orders.FirstOrDefault(o => o.PartTypeId == item.PartTypeId && !o.FulfilledDate.HasValue) == null)
{
await OrderPart(item.PartType, item.OrderThreshold);
}
}
}