public static async Task <ShrunkUrl> ShrinkUrlAsync(ShrinkRequest req)
{
var db = DatabaseAccessService.OpenOrCreateDefault();
// Return existing URL if it exists
var existingUrl = await RetrieveShrunkUrlByTargetAsync(req.Url);
if (existingUrl != null)
{
return(existingUrl);
}
var storedUrls = db.GetCollection <ShrunkUrl>(DatabaseAccessService.ShrunkUrlCollectionDatabaseKey);
var newShrunkUrl = new ShrunkUrl
{
Target = req.Url,
ShrunkPath = StringUtils.SecureRandomString(7),
CreatedTimestamp = DateTime.Now
};
await Task.Run(() =>
{
using (var trans = db.BeginTrans())
{
// save new url
storedUrls.Insert(newShrunkUrl);
storedUrls.EnsureIndex(x => x.ShrunkPath);
storedUrls.EnsureIndex(x => x.Target);
trans.Commit();
}
});
return(newShrunkUrl);
}
public static async Task <IEnumerable <UrlRedirectEvent> > GetRedirectHistory(ShrunkUrl shrunkUrl, DateTime earliestDate)
{
return(await Task.Run(() =>
{
var db = DatabaseAccessService.OpenOrCreateDefault();
var storedUrls = db.GetCollection <UrlRedirectEvent>(DatabaseAccessService.ShrunkUrlCollectionDatabaseKey);
return storedUrls.Find(Query.Where(nameof(UrlRedirectEvent.Timestamp), x => x.AsDateTime > earliestDate));
}));
}
