public class PokedexSeen {

	/* onGameInitialization
	 *
	 * This method will register this object/mod to the event bus so it can have listeners
	 */
	@Listener
	public void onGameInitialization(GameInitializationEvent event) {
		Pixelmon.EVENT_BUS.register(this);
	}

	/* updateDex method
	 *
	 * This method takes in a BattleControllerBase
	 * which contains information about participants in order
	 * to implement the seen functionality for pokedex.
	 *
	 * This works for both wild and trainer battle. This supports single battles,
	 * one player double battles, and two player double battles.
	 *
	 * @playersDex Stores pokedex object of each player participant
	 * @opponents Store pixelmon of each opponents
	 */
	private void updateDex(BattleControllerBase event) {
		List<Pokedex> playersDex = new LinkedList<Pokedex>();
		List<PixelmonWrapper> opponents = new LinkedList<PixelmonWrapper>();
		event.participants.forEach((participant) -> {
			if (participant instanceof PlayerParticipant) {
				playersDex.add(((PlayerParticipant)participant).party.pokedex);
			}
			else {
				opponents.addAll(participant.controlledPokemon);
			}
		});
		for (Pokedex playerDex : playersDex) {
			for (PixelmonWrapper opponent : opponents) {
				int pokemonID = opponent.pokemon.getSpecies().getNationalPokedexInteger();
				if (playerDex.isUnknown(pokemonID)) {
					Pixelmon.EVENT_BUS.post(new PokedexEvent(playerDex.uuid, opponent.pokemon, EnumPokedexRegisterStatus.seen, PokedexEvent.POKEDEX_KEY));
					playerDex.set(pokemonID, EnumPokedexRegisterStatus.seen);
					playerDex.update();
				}
			}
		}
	}

	/* onTurnEnd method
	 *
	 * This method will listen to when a turn ends in battle.
	 */
	@SubscribeEvent
	public void onTurnEnd(TurnEndEvent event) {
		this.updateDex(event.bcb);
	}

	/* onBattleEnd method
	 *
	 * This method will listen to when a battle ends (via forfeit, run, etc.)
	 */
	@SubscribeEvent
	public void onBattleEnd(BattleEndEvent event) {
		this.updateDex(event.bc);
	}
}