package uulm.teamname.marvelous.gamelibrary.events;

import uulm.teamname.marvelous.gamelibrary.IntVector2;
import uulm.teamname.marvelous.gamelibrary.entities.Entity;
import uulm.teamname.marvelous.gamelibrary.entities.EntityID;

import java.util.Objects;

/** Represents an entity event for: {@link EventType#DestroyedEntityEvent}, {@link EventType#TakenDamageEvent}, {@link EventType#ConsumedAPEvent}, {@link EventType#ConsumedMPEvent}, {@link EventType#SpawnEntityEvent}, {@link EventType#HealedEvent}. */
public class EntityEvent extends Event {
    public EntityID targetEntity = null;
    public IntVector2 targetField = null;
    public Integer amount = null;
    public Entity entity = null;

    @Override
    public boolean check() {
        if(!super.check()) {
            return false;
        }

        switch(type) {
            // DestroyedEntityEvent takes an ID and a field, and destroys the entity if the field is correct
            case DestroyedEntityEvent:
                if (this.targetField == null || this.targetEntity == null) {
                    return false;
                }
                break;

            // TakenDamage, ConsumedAP / MP and Healed all need a targetField, targetEntity and Amount.
            case TakenDamageEvent:
            case ConsumedAPEvent:
            case ConsumedMPEvent:
            case HealedEvent:
                if (this.targetField == null ||
                        this.targetEntity == null ||
                        this.amount == null) {
                    return false;
                }
                break;

            // SpawnEntity needs an entity, of course.
            case SpawnEntityEvent:
                if (this.entity == null) {
                    return false;
                }
                break;
        }

        return true;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        if (!super.equals(o)) return false;
        EntityEvent that = (EntityEvent) o;
        return Objects.equals(targetEntity, that.targetEntity) && Objects.equals(targetField, that.targetField) && Objects.equals(amount, that.amount);
    }

    @Override
    public int hashCode() {
        return Objects.hash(super.hashCode(), targetEntity, targetField, amount);
    }

    @Override
    public String toString() {
        return "EntityEvent{" +
                "eventType=" + this.type +
                ", targetEntity=" + targetEntity +
                ", targetField=" + targetField +
                ", amount=" + amount +
                ", entity=" + entity +
                '}';
    }
}