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/*
 *   Copyright (c) 2023. Ned Wolpert 
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 *
 */

package com.codeheadsystems.gamelib.entity.manager;

import com.badlogic.ashley.core.Component;
import com.badlogic.ashley.core.Entity;
import com.badlogic.ashley.core.EntitySystem;
import com.badlogic.ashley.core.PooledEngine;
import com.badlogic.gdx.Gdx;
import java.util.HashSet;
import java.util.Set;
import javax.inject.Inject;
import javax.inject.Singleton;

/**
 * The type Engine manager.
 */
@Singleton
public class EngineManager {

  private final Set entitySystems = new HashSet<>();
  private final PooledEngine pooledEngine;

  /**
   * Instantiates a new Engine manager.
   *
   * @param entities      the entities
   * @param entitySystems the entity systems
   * @param pooledEngine  the pooled engine
   */
  @Inject
  public EngineManager(final Set entities,
                       final Set entitySystems,
                       final PooledEngine pooledEngine) {
    this.entitySystems.addAll(entitySystems);
    this.pooledEngine = pooledEngine;
    for (Entity entity : entities) {
      Gdx.app.log("PoolEngineManager", "AddEntity: " + entity + ":" + entity.getComponents());
      pooledEngine.addEntity(entity);
    }
    for (EntitySystem entitySystem : entitySystems) {
      Gdx.app.log("PoolEngineManager", "AddSystem: " + entitySystem);
      pooledEngine.addSystem(entitySystem);
    }
  }

  /**
   * Create entity entity.
   *
   * @return the entity
   */
  public Entity createEntity() {
    return pooledEngine.createEntity();
  }

  /**
   * Create component t.
   *
   * @param            the type parameter
   * @param componentType the component type
   * @return the t
   */
  public  T createComponent(Class componentType) {
    return pooledEngine.createComponent(componentType);
  }

  /**
   * Engine pooled engine.
   *
   * @return the pooled engine
   */
  public PooledEngine engine() {
    return pooledEngine;
  }

  /**
   * Add system.
   *
   * @param system the system
   */
  public void addSystem(EntitySystem system) {
    pooledEngine.addSystem(system);
    entitySystems.add(system);
  }

  /**
   * Remove system.
   *
   * @param system the system
   */
  public void removeSystem(EntitySystem system) {
    pooledEngine.addSystem(system);
    entitySystems.remove(system);
  }

  /**
   * Add entity.
   *
   * @param entity the entity
   */
  public void addEntity(Entity entity) {
    pooledEngine.addEntity(entity);
  }

  /**
   * Remove entity.
   *
   * @param entity the entity
   */
  public void removeEntity(Entity entity) {
    entity.removeAll();
    pooledEngine.removeEntity(entity);
  }

  /**
   * Update.
   *
   * @param delta the delta
   */
  public void update(float delta) {
    pooledEngine.update(delta);
  }

  /**
   * Destroy.
   */
  public void destroy() {
    pooledEngine.removeAllEntities();
    for (EntitySystem entitySystem : entitySystems) {
      Gdx.app.log("PoolEngineManager", "removeSystem: " + entitySystem);
      pooledEngine.removeSystem(entitySystem);
    }
    pooledEngine.removeAllSystems();
    entitySystems.clear();
  }

  /**
   * Gets entity systems.
   *
   * @return the entity systems
   */
  public Set getEntitySystems() {
    return entitySystems;
  }

  /**
   * Clear.
   */
  public void clear() {
    pooledEngine.removeAllEntities();
  }
}