public static Token CheckPermitions(string authHeader, IDbConnection db)
{
if (authHeader.IsNullOrEmpty())
return null;
if (!authHeader.StartsWith("Bearer ", StringComparison.Ordinal))
return null;
Guid token;
if (!Guid.TryParse(authHeader.Substring(7), out token))
return null;
var dbToken = db.FirstOrDefaultById<Token>(token);
if (dbToken == null || dbToken.ExpiresIn < DateTime.Now)
return null;
dbToken.ExpiresIn = DateTime.Now + TimeSpan.FromDays(7);
db.Update(dbToken);
return dbToken;
}