// admin.js
// Copyright (C) 2022 DTP Technologies, LLC
// License: Apache-2.0

'use strict';

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, module.exports);
  }

  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('/announcement', await this.loadChild(path.join(__dirname, 'admin', 'announcement')));
    router.use('/content-report', await this.loadChild(path.join(__dirname, 'admin', 'content-report')));
    router.use('/core-node', await this.loadChild(path.join(__dirname, 'admin', 'core-node')));
    router.use('/core-user', await this.loadChild(path.join(__dirname, 'admin', 'core-user')));
    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('/newsroom', await this.loadChild(path.join(__dirname, 'admin', 'newsroom')));
    router.use('/otp', await this.loadChild(path.join(__dirname, 'admin', 'otp')));
    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('/service-node', await this.loadChild(path.join(__dirname, 'admin', 'service-node')));
    router.use('/site-link', await this.loadChild(path.join(__dirname, 'admin', 'site-link')));
    router.use('/user', await this.loadChild(path.join(__dirname, 'admin', 'user')));
    router.use('/venue', await this.loadChild(path.join(__dirname, 'admin', 'venue')));

    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) {
    const {
      coreNode: coreNodeService,
      dashboard: dashboardService,
      venue: venueService,
    } = this.dtp.services;

    res.locals.stats = {
      userSignupHourly: await dashboardService.getUserSignupsPerHour(),
      memberCount: await User.estimatedDocumentCount(),
      constellation: await coreNodeService.getConstellationStats(),
    };

    res.locals.channels = await venueService.getChannels();
    res.locals.pageTitle = `Admin Dashbord for ${this.dtp.config.site.name}`;

    res.render('admin/index');
  }
}

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