import { computed, observable, action } from 'mobx';
import { find } from 'lodash';
import Map from 'shared/model/map';
import TaskPlan from './teacher/plan';

export
class TeacherTaskPlans extends Map {

  @observable course;

  constructor({ course } = {}) {
    super();
    this.course = course;
  }

  get chainedValues() {
    return { course: this.course };
  }

  withPlanId(planId) {
    let plan = this.get(planId);
    if (!plan) {
      plan = new TaskPlan({ id: planId });
      this.set(planId, plan);
    }
    return plan;
  }

  @action onPlanSave(oldId, planAttrs) {
    let tp = this.get(oldId);
    if (tp) {
      tp.update(planAttrs);
    } else {
      tp = new TaskPlan(planAttrs);
    }
    this.set(planAttrs.id, tp);
    if (oldId != tp.id) {
      this.delete(oldId);
    }
  }

  addClone(planAttrs) {
    this.set(planAttrs.id, new TaskPlan(planAttrs));
  }

  @computed get active() {
    return this.where(plan => !plan.is_deleting);
  }

  @computed get isPublishing() {
    return this.where(plan => plan.isPublishing);
  }

  @computed get hasPublishing() {
    return Boolean(find(this.array, 'isPublishing'));
  }

  @computed get reading() {
    return this.where(plan => plan.type === 'reading');
  }

  @computed get homework() {
    return this.where(plan => plan.type === 'homework');
  }

  @computed get pastDue() {
    return this.where(plan => plan.isPastDue);
  }

  @computed get open() {
    return this.where(plan => plan.isOpen);
  }

  withPeriodId(periodId) {
    return this.where(plan => find(plan.tasking_plans, { target_id: periodId }));
  }

  pastDueWithPeriodId(periodId) {
    return this.where(plan => plan.isPastDueWithPeriodId(periodId));
  }

  // called from api
  fetch() { }
  @action onLoaded({ data: { plans } }) {
    plans.forEach(plan => {
      const tp = this.get(plan.id);
      tp ? tp.update(plan) : this.set(plan.id, new TaskPlan(plan));
    });
  }

}

@@ -1733,16 +1733,59 @@
 etch() %7B
+%0A    return %7B courseId: this.course.id %7D;%0A 
  %7D%0A  @ac

return courseId