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

'use strict';

const DTP_COMPONENT_NAME = 'admin';

const path = require('path');
const express = require('express');

const mongoose = require('mongoose');
const User = mongoose.model('User');

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

class AdminController extends SiteController {

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

  async start ( ) {
    const { otpAuth: otpAuthService } = this.dtp.services;

    const router = express.Router();
    this.dtp.app.use('/admin', router);

    router.use(
      async (req, res, next) => {
        res.locals.currentView = 'admin';
        res.locals.adminView = 'home';

        if (!req.user || !req.user.flags.isAdmin) {
          return next(new SiteError(403, 'Administrative privileges required'));
        }

        return next();
      },
      otpAuthService.middleware('Admin', {
        adminRequired: true,
        otpRequired: true,
        otpRedirectURL: '/admin',
      }),
    );

    router.use('/content-report',await this.loadChild(path.join(__dirname, 'admin', 'content-report')));
    router.use('/host',await this.loadChild(path.join(__dirname, 'admin', 'host')));
    router.use('/job-queue', await this.loadChild(path.join(__dirname, 'admin', 'job-queue')));
    router.use('/log', await this.loadChild(path.join(__dirname, 'admin', 'log')));
    router.use('/newsletter', await this.loadChild(path.join(__dirname, 'admin', 'newsletter')));
    router.use('/page', await this.loadChild(path.join(__dirname, 'admin', 'page')));
    router.use('/post', await this.loadChild(path.join(__dirname, 'admin', 'post')));
    router.use('/settings', await this.loadChild(path.join(__dirname, 'admin', 'settings')));
    router.use('/user', await this.loadChild(path.join(__dirname, 'admin', 'user')));

    router.get('/diagnostics', this.getDiagnostics.bind(this));

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

    return router;
  }

  async getDiagnostics (req, res) {
    res.status(200).json({
      success: true,
      url: req.url,
      ip: req.ip,
      headers: req.headers,
    });
  }

  async getHomeView (req, res) {
    res.locals.stats = {
      memberCount: await User.estimatedDocumentCount(),
    };
    res.render('admin/index');
  }
}

module.exports = {
  slug: 'admin',
  name: 'admin',
  create: async (dtp) => {
    let controller = new AdminController(dtp);
    return controller;
  },
};