import * as AnalyticUnit from '../models/analytic_unit';
import { getAlertsAnomalies, saveAlertsAnomalies } from '../controllers/alerts_service';

import * as Router from 'koa-router';


function getAlert(ctx: Router.IRouterContext) {
  let id: AnalyticUnit.AnalyticUnitId = ctx.request.query.id;

  let alertsAnomalies = getAlertsAnomalies();
  let pos = alertsAnomalies.indexOf(id);

  let enabled: boolean = (pos !== -1);
  ctx.response.body = { enabled };
}

function setAlertEnabled(ctx: Router.IRouterContext) {
  let id: AnalyticUnit.AnalyticUnitId = ctx.request.body.id;
  let enabled: boolean = ctx.request.body.enabled;

  let alertsAnomalies = getAlertsAnomalies();
  let pos: number = alertsAnomalies.indexOf(id);
  if(enabled && pos == -1) {
    alertsAnomalies.push(id);
    saveAlertsAnomalies(alertsAnomalies);
  } else if(!enabled && pos > -1) {
    alertsAnomalies.splice(pos, 1);
    saveAlertsAnomalies(alertsAnomalies);
  }
  ctx.response.body = { status: 'OK' };
}

export const router = new Router();

router.get('/', getAlert);
router.post('/', setAlertEnabled);