private IEnumerable <AuditEntry> OnBeforeSaveChanges()
{
ChangeTracker.DetectChanges();
var auditEntries = new List <AuditEntry>();
foreach (var entry in ChangeTracker.Entries().ToList())
{
if (entry.Entity is EntityAudit ||
entry.State == EntityState.Detached ||
entry.State == EntityState.Unchanged)
{
continue;
}
if (_userLoggedRepository != null)
{
var userEntry = new EntityAuditUser()
{
Id = _userLoggedRepository.GetUserId(),
Name = _userLoggedRepository.GetUserName(),
Email = _userLoggedRepository.GetUserEmail()
};
var auditEntry = new AuditEntry(entry)
{
EntityName = entry.Metadata.GetTableName(),
TransactionId = Transaction.Current?
.TransactionInformation?.LocalIdentifier
?? Guid.NewGuid().ToString(),
User = userEntry,
Operation = entry.State.ToOperationType()
};
auditEntries.Add(auditEntry);
foreach (var property in entry.Properties.ToList())
{
var propertyName = property.Metadata.Name;
if (property.IsTemporary)
{
auditEntry.TemporaryProperties.Add(property);
continue;
}
if (property.Metadata.IsPrimaryKey())
{
auditEntry.SetKeyValues(propertyName, property.CurrentValue);
continue;
}
switch (entry.State)
{
case EntityState.Added:
auditEntry.SetNewValues(propertyName, property.CurrentValue);
break;
case EntityState.Deleted:
auditEntry.SetOldValues(propertyName, property.CurrentValue);
break;
case EntityState.Modified:
if (property.IsModified && !Nullable.Equals(property.OriginalValue, property.CurrentValue))
{
auditEntry.SetOldValues(propertyName, property.OriginalValue);
auditEntry.SetNewValues(propertyName, property.CurrentValue);
}
break;
}
}
}
foreach (var auditEntry in auditEntries.Where(e => !e.HasTemporaryProperties))
{
EntityAudits.Add(auditEntry);
}
}
return(auditEntries
.Where(e => e.HasTemporaryProperties).ToList());
}