// admin/job-queue.js
// Copyright (C) 2021 Digital Telepresence, LLC
// License: Apache-2.0

'use strict';

const DTP_COMPONENT_NAME = 'admin:job-queue';
const express = require('express');

const { /*SiteError,*/ SiteController } = require('../../../lib/site-lib');

class JobQueueController extends SiteController {

  constructor (dtp) {
    super(dtp, DTP_COMPONENT_NAME);
  }

  async start ( ) {
    const router = express.Router();
    router.use(async (req, res, next) => {
      res.locals.currentView = 'admin';
      res.locals.adminView = 'job-queue';
      return next();
    });

    router.param('jobQueueName', this.populateJobQueueName.bind(this));

    router.get('/:jobQueueName', this.getJobQueueView.bind(this));
    router.get('/', this.getHomeView.bind(this));

    return router;
  }

  async populateJobQueueName (req, res, next, jobQueueName) {
    const { jobQueue: jobQueueService } = this.dtp.services;
    try {
      res.locals.queueName = jobQueueName;
      res.locals.queue = await jobQueueService.getJobQueue(jobQueueName);
      return next();
    } catch (error) {
      this.log.error('failed to populate job queue', { jobQueueName, error });
      return next(error);
    }
  }

  async getJobQueueView (req, res, next) {
    try {
      res.locals.jobCounts = await res.locals.queue.getJobCounts();
      res.locals.jobs = {
        waiting: await res.locals.queue.getWaiting(0, 5),
        active: await res.locals.queue.getActive(0, 5),
        delayed: await res.locals.queue.getDelayed(0, 5),
        failed: await res.locals.queue.getFailed(0, 5),
      };
      res.render('admin/job-queue/queue-view');
    } catch (error) {
      this.log.error('failed to populate job queue view', { error });
      return next(error);
    }
  }

  async getHomeView (req, res, next) {
    const { jobQueue: jobQueueService } = this.dtp.services;
    try {
      res.locals.queues = await jobQueueService.discoverJobQueues('soapy:*:id');
      res.render('admin/job-queue/index');
    } catch (error) {
      this.log.error('failed to populate job queues view', { error });
      return next(error);
    }
  }
}

module.exports = async (dtp) => {
  let controller = new JobQueueController(dtp);
  return controller;
};