/// <summary>
/// Checks whether the supplied voter name exists in the list of known identities.
/// This finds names using the current comparison settings, usually ignoring
/// differences in whitespace, punctuation, etc.
/// </summary>
/// <param name="voterName">The name of the voter to check for. Does not need to be exact. Must not be null or empty.</param>
/// <returns>Returns true if the voter name is known to exist.</returns>
/// <exception cref="ArgumentNullException"/>
public bool HasVoterName(string voterName)
{
if (string.IsNullOrEmpty(voterName))
{
throw new ArgumentNullException(nameof(voterName));
}
return(IdentityLookup.TryGetValue(voterName, out IdentitySet identities));
}
/// <summary>
/// Gets all of the voter identities.
/// </summary>
/// <param name="voterName">Name of the voter.</param>
/// <returns>The Identity Set for that voter.</returns>
public IdentitySet GetVoterIdentities(string voterName)
{
if (IdentityLookup.TryGetValue(voterName, out IdentitySet identities))
{
return(identities);
}
return(null);
}
/// <summary>
/// Gets the last voter identity.
/// </summary>
/// <param name="voterName">Name of the voter.</param>
/// <returns>The last (by post ID) identity for that voter.</returns>
public Identity GetLastVoterIdentity(string voterName, string host = null)
{
if (IdentityLookup.TryGetValue(voterName, out IdentitySet identities))
{
var matchHost = identities.Where(i => host == null || i.Host == host).OrderBy(i => i.PostIDValue).Last();
return(matchHost);
}
return(null);
}
/// <summary>
/// Fill in the lookup table for name -> identity.
/// </summary>
private void InitIdentityLookup()
{
IdentityLookup.Clear();
foreach (var post in postsList)
{
if (IdentityLookup.TryGetValue(post.Identity.Name, out IdentitySet identities))
{
identities.Add(post.Identity);
}
else
{
IdentityLookup.Add(post.Identity.Name, new IdentitySet {
post.Identity
});
}
}
}