import Component from '@/ecs/component.js';

export default class Behaving extends Component {
  instanceFromSchema() {
    return class BehavingInstance extends super.instanceFromSchema() {
      $$routineInstances = {};
      tick(elapsed) {
        const routine = this.$$routineInstances[this.currentRoutine];
        if (routine) {
          routine.tick(elapsed);
        }
      }
    };
  }
  async load(instance) {
    // heavy handed...
    if ('undefined' !== typeof window) {
      return;
    }
    const promises = [];
    for (const key in instance.routines) {
      promises.push(
        this.ecs.readScript(
          instance.routines[key],
          {
            entity: this.ecs.get(instance.entity),
          },
        )
          .then((script) => {
            instance.$$routineInstances[key] = script;
          }),
      );
    }
    await Promise.all(promises);
  }
  static properties = {
    currentRoutine: {defaultValue: 'initial', type: 'string'},
    isBehaving: {defaultValue: 1, type: 'uint8'},
    routines: {
      type: 'map',
      value: {
        type: 'string',
      },
    },
  };
}