package geniusweb.inform;

import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;

import geniusweb.actions.PartyId;
import geniusweb.actions.Votes;

/**
 * Informs party that it's time to Opt-in.
 */
public class OptIn implements Inform {

	private final List<Votes> votes;

	/**
	 * @param votes a list of votes. There may be only one votes per party.
	 */
	@JsonCreator
	public OptIn(@JsonProperty("votes") List<Votes> votes) {
		this.votes = votes;

		List<PartyId> partyVotes = new LinkedList<>();
		for (Votes vote : votes) {
			PartyId party = vote.getActor();
			if (partyVotes.contains(party))
				throw new IllegalArgumentException(
						"OptIn contains multiple Votes for party " + party);
			partyVotes.add(party);
		}
	}

	/**
	 * @return list of votes that can be opted in to
	 */
	public List<Votes> getVotes() {
		return Collections.unmodifiableList(votes);
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((votes == null) ? 0 : votes.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		OptIn other = (OptIn) obj;
		if (votes == null) {
			if (other.votes != null)
				return false;
		} else if (!votes.equals(other.votes))
			return false;
		return true;
	}

	@Override
	public String toString() {
		return "OptIn[" + votes + "]";
	}

}