package tc.oc.pgm.shield;

import java.util.HashMap;
import java.util.Map;

import org.bukkit.entity.Entity;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.EntityDamageEvent;
import org.bukkit.event.entity.PotionEffectRemoveEvent;
import tc.oc.pgm.events.ListenerScope;
import tc.oc.pgm.match.Match;
import tc.oc.pgm.match.MatchModule;
import tc.oc.pgm.match.MatchPlayer;
import tc.oc.pgm.match.MatchScope;
import tc.oc.pgm.match.Repeatable;
import tc.oc.pgm.module.ModuleDescription;
import tc.oc.pgm.spawns.events.ParticipantDespawnEvent;

@ModuleDescription(name = "Shield")
@ListenerScope(MatchScope.RUNNING)
public class ShieldMatchModule extends MatchModule implements Listener {

    final Map<MatchPlayer, ShieldPlayerModule> playerShields = new HashMap<>();

    ShieldPlayerModule getShield(Entity player) {
        MatchPlayer matchPlayer = getMatch().getPlayer(player);
        return matchPlayer == null ? null : playerShields.get(matchPlayer);
    }

    public void applyShield(MatchPlayer player, ShieldParameters parameters) {
        removeShield(player);
        if(parameters.maxHealth > 0) {
            ShieldPlayerModule shield = new ShieldPlayerModule(this, player, parameters);
            shield.apply();
            playerShields.put(player, shield);
        }
    }

    public void removeShield(MatchPlayer player) {
        ShieldPlayerModule shield = playerShields.remove(player);
        if(shield != null) shield.remove();
    }

    @Repeatable
    public void tick(Match match) {
        for(ShieldPlayerModule shield : playerShields.values()) {
            shield.tick(match);
        }
    }

    @EventHandler
    public void onDespawn(ParticipantDespawnEvent event) {
        playerShields.remove(event.getPlayer());
    }

    @EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
    public void onDamage(EntityDamageEvent event) {
        ShieldPlayerModule shield = getShield(event.getEntity());
        if(shield != null) shield.onEvent(event);
    }

    @EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
    public void onPotionRemove(PotionEffectRemoveEvent event) {
        ShieldPlayerModule shield = getShield(event.getEntity());
        if(shield != null) shield.onEvent(event);
    }
}