public void VoteFor(Candidate candidate, PersonName voter)
{
if (candidate is null)
{
throw new ArgumentNullException(nameof(candidate), "You must vote for an existing candidate.");
}
if (voter is null)
{
throw new ArgumentException(nameof(voter), "You must enter a voter first and last name.");
}
var duplicateBallot = _candidacies.SelectMany(x => x.Ballots).FirstOrDefault(y => y.Voter == voter);
if (duplicateBallot != null)
{
throw new ArgumentException(nameof(voter), "Voter has already cast a ballot.");
}
var candidacyToAddVote = _candidacies.Find(x => x.Candidate == candidate);
if (candidacyToAddVote != null)
{
var ballot = new Ballot(voter, candidacyToAddVote);
candidacyToAddVote.AddBallot(ballot);
}
// Basic guards - null candidate, etc.
// Is this candidate in this election?
// Has this voter already submitted a ballot?
// Find the candidacy
// Create a new Ballot()
// Add the Ballot to the candidacy's ballot list
}
public void AddBallot(Ballot ballot)
{
_ballots.Add(ballot);
}