import {compose} from '@avocado/core';
import {StateProperty, Trait} from '@avocado/entity';

const decorate = compose(
  StateProperty('isCheckingCollisions'),
);

export class Collider extends decorate(Trait) {

  static defaultParams() {
    return {
      collidesWithGroups: [
        'default',
      ],
      collisionGroup: 'default',
    }
  }

  static defaultState() {
    return {
      isCheckingCollisions: true,
    }
  }

  initialize() {
    this._collisionGroup = this.params.get('collisionGroup');
    this._collidesWithGroups = this.params.get('collidesWithGroups').toJS();
  }

  get collisionGroup() {
    return this._collisionGroup;
  }

  get collidesWithGroups() {
    return this._collidesWithGroups;
  }

  methods() {
    return {

      collidesWith: (entity) => {
        if (!entity.is('collider')) {
          return false;
        }
        const collisionGroup = entity.collisionGroup();
        return -1 !== this._collidesWithGroups.indexOf(collisionGroup);
      },

    };
  }
}