private void LinkSource(BibleBase target, BibleSource source)
{
if (target == null)
{
throw new ArgumentNullException(nameof(target));
}
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
target.Source = source;
target.SourceId = source.Id;
}
public async Task <List <Bible> > GetBiblesAsync(BibleSource source)
{
if (source == null)
{
return(new List <Bible>());
}
// 캐시가 있으면 사용
var bibles = GetCached();
if (bibles.Any())
{
return(bibles);
}
// 캐시가 없으면 온라인에서 가져와서 저장
bibles = await source.GetBiblesOnlineAsync().ConfigureAwait(false);
bibles.ForEach(bible => LinkSource(bible, source));
Cache();
return(bibles);
List <Bible> GetCached()
{
using var scope = ScopeFactory.CreateScope();
var db = scope.ServiceProvider.GetRequiredService <BibleContext>();
return(db.Bibles.Where(i => i.SourceId == source.Id).ToList());
}
void Cache()
{
using var scope = ScopeFactory.CreateScope();
var db = scope.ServiceProvider.GetRequiredService <BibleContext>();
db.Bibles.AddRange(bibles);
db.SaveChanges();
}
}
