public bool HashInUse(string hash)
{
using (var context = new UrlContext(_connectionString))
{
return(context.Urls.Any(h => hash == h.Hash));
}
}
public Url GetOriginalUrl(string hash)
{
using (var context = new UrlContext(_connectionString))
{
return(context.Urls.FirstOrDefault(h => h.Hash == hash));
}
}
public string AddUrl(string url)
{
Url u = new Url();
u.OriginalUrl = url;
u.Hash = ShortId.Generate(10);
while (HashInUse(u.Hash))
{
u.Hash = ShortId.Generate(10);
}
using (var context = new UrlContext(_connectionString))
{
context.Urls.Add(u);
context.SaveChanges();
}
return(u.Hash);
}
