import {compose} from '@avocado/core';
import {createContext, Routines} from '@avocado/behavior';

import {StateProperty, Trait} from '../trait';

const decorate = compose(
  StateProperty('isBehaving'),
  StateProperty('currentRoutine'),
);

export class Behaved extends decorate(Trait) {

  static defaultParams() {
    return {
      routines: {},
    };
  }

  static defaultState() {
    return {
      isBehaving: true,
      currentRoutine: 'initial',
    }
  }

  initialize() {
    this._context = createContext();
    this._context.add('entity', this.entity);
    const routinesJSON = {
      type: 'routines',
      routines: this.params.get('routines').toJS(),
    };
    this._routines = (new Routines()).fromJSON(routinesJSON);
    this._routines.context = this._context;
  }

  get context() {
    return this._context;
  }

  listeners() {
    return {

      dying: () => {
        this.entity.isBehaving = false;
      },

    };
  }

  tick(elapsed) {
    const routine = this._routines.routine(this.entity.currentRoutine);
    if (routine) {
      routine.tick(elapsed);
    }
  }

}