import * as I from 'immutable';

import {Trait} from '@avocado/entity';

import {AFFINITY_PHYSICAL} from './constants';

export class Damaging extends Trait {

  static defaultParams() {
    return {
      damagingSound: '',
      damageSpecs: [],
    };
  }

  initialize() {
    this._collidingWith = [];
    const damageSpecsJSON = this.params.damageSpecs;
    this._damageSpecs = damageSpecsJSON.map((damageSpec) => {
      return {
        affinity: AFFINITY_PHYSICAL,
        lock: 0.1,
        power: 0,
        variance: 0.2,
        ...damageSpec,
      };
    });
    this._damagingSound = this.params.damagingSound;
  }

  get damageSpecs() {
    return this._damageSpecs;
  }

  get damagingSound() {
    return this._damagingSound;
  }

  tick(elapsed) {
    if (AVOCADO_SERVER) {
      const isCollidingWith = this.entity.isCollidingWith;
      for (let i = 0; i < isCollidingWith.length; i++) {
        const entity = isCollidingWith[i];
        if (entity.is('vulnerable')) {
          if (!entity.isInvulnerable) {
            entity.takeDamageFrom(this.entity);
          }
        }
      }
    }
  }

}