public async Task OnResourceExecutionAsync(ResourceExecutingContext before, ResourceExecutionDelegate next)
{
var modifying = false;
if (before.ActionDescriptor is ControllerActionDescriptor action)
{
modifying = action.MethodInfo.GetCustomAttributes <DatabaseUpdateAttribute>().Any();
}
if (modifying)
{
using (var handle = await access.Write())
{
var after = await next();
var status = after.HttpContext.Response.StatusCode;
if (status < 400)
{
await SaveChanges(handle);
}
}
}
else
{
using (await access.Read())
{
await next();
}
}
}
private async Task <Email> Next()
{
using (await access.Read())
{
var unsent = from mail in emails.Include(e => e.Recipients).All
where !mail.IsSent
orderby mail.Created ascending
select mail;
return(unsent.FirstOrDefault());
}
}
private async Task <IEnumerable <GeneratedPairs> > Generate()
{
using (await access.Read())
{
var ready = from world in worlds.NotDeleted
where world.Account.Status != AccountStatus.Deleted
from pairing in world.Pairings
where !pairing.IsComplete && pairing.Date < DateTime.UtcNow
select pairing;
return(ready.ToList().Select(generator.For).ToList());
}
}