public async Task SaveSlugAsync <T>(T entity, string slug, CancellationToken cancellationToken = default)
where T : ISlugSupported
{
Check.NotNull(entity, nameof(entity));
var entityId = entity.Id;
var entityName = entity.GetType().Name;
var query = from ur in _urlRecordRepository.GetList()
where ur.EntityId == entityId &&
ur.EntityName == entityName
orderby ur.Id descending
select ur;
var allUrlRecords = query.ToList();
var activeUrlRecord = allUrlRecords.FirstOrDefault(x => x.IsActive);
UrlRecord nonActiveRecordWithSpecifiedSlug;
if (activeUrlRecord == null && !string.IsNullOrWhiteSpace(slug))
{
//find in non-active records with the specified slug
nonActiveRecordWithSpecifiedSlug = allUrlRecords
.FirstOrDefault(
x => x.Slug.Equals(slug, StringComparison.InvariantCultureIgnoreCase) && !x.IsActive);
if (nonActiveRecordWithSpecifiedSlug != null)
{
//mark non-active record as active
nonActiveRecordWithSpecifiedSlug.IsActive = true;
await _urlRecordRepository.UpdateAsync(nonActiveRecordWithSpecifiedSlug, cancellationToken : cancellationToken);
}
else
{
//new record
var urlRecord = new UrlRecord(
GuidGenerator.Create(),
entityId,
entityName,
slug, true);
await _urlRecordRepository.InsertAsync(urlRecord,
cancellationToken : cancellationToken);
}
}
if (activeUrlRecord != null && string.IsNullOrWhiteSpace(slug))
{
//disable the previous active URL record
activeUrlRecord.IsActive = false;
await _urlRecordRepository.UpdateAsync(activeUrlRecord, cancellationToken : cancellationToken);
}
if (activeUrlRecord == null || string.IsNullOrWhiteSpace(slug))
{
return;
}
//it should not be the same slug as in active URL record
if (activeUrlRecord.Slug.Equals(slug, StringComparison.InvariantCultureIgnoreCase))
{
return;
}
//find in non-active records with the specified slug
nonActiveRecordWithSpecifiedSlug = allUrlRecords
.FirstOrDefault(x => x.Slug.Equals(slug, StringComparison.InvariantCultureIgnoreCase) && !x.IsActive);
if (nonActiveRecordWithSpecifiedSlug != null)
{
//mark non-active record as active
nonActiveRecordWithSpecifiedSlug.IsActive = true;
await _urlRecordRepository.UpdateAsync(nonActiveRecordWithSpecifiedSlug, cancellationToken : cancellationToken);
//disable the previous active URL record
activeUrlRecord.IsActive = false;
await _urlRecordRepository.UpdateAsync(activeUrlRecord, cancellationToken : cancellationToken);
}
else
{
//insert new record
//we do not update the existing record because we should track all previously entered slugs
//to ensure that URLs will work fine
var urlRecord = new UrlRecord(
GuidGenerator.Create(),
entityId,
entityName,
slug,
true
);
await _urlRecordRepository.InsertAsync(urlRecord, cancellationToken : cancellationToken);
//disable the previous active URL record
activeUrlRecord.IsActive = false;
await _urlRecordRepository.UpdateAsync(activeUrlRecord, cancellationToken : cancellationToken);
}
}
public async Task InsertUrlRecordAsync(UrlRecord urlRecord, CancellationToken cancellationToken = default)
{
Check.NotNull(urlRecord, nameof(urlRecord));
await _urlRecordRepository.InsertAsync(urlRecord, cancellationToken : cancellationToken);
}
public async Task UpdateUrlRecordAsync(UrlRecord urlRecord, CancellationToken cancellationToken = default)
{
Check.NotNull(urlRecord, nameof(urlRecord));
await _urlRecordRepository.UpdateAsync(urlRecord, autoSave : true, cancellationToken : cancellationToken);
}
public async Task DeleteUrlRecordAsync(UrlRecord urlRecord, CancellationToken cancellationToken = default)
{
await _urlRecordRepository.DeleteAsync(urlRecord.Id, cancellationToken : cancellationToken);
}