"use strict";
  
  /**
   * Modul untuk menerima callback dari modem handler jika ada SMS masuk.
   */
  
  
  const express = require('express');

  const moment = require('moment');

  
  const messagingService = require('komodo-center-messaging-client-lib');
  
  const config = require('komodo-sdk/config');
  const logger = require('komodo-sdk/logger');

  const transport = require('../transport');
  const partnerLastSeen = require('../partner-last-seen');
  const history = require('../history');

  // const modems = require('../modems2');

  const routerModems = require('./router-modems');

  if (config.handler_callback_server) {
      logger.warn('Deprecated config.handler_callback_server. Please migrate it to config.apiserver!');
  }

  const app = express();
  messagingService.setTransport(transport);
  
  function apikeyChecker(req, res, next) {

      res.locals.has_valid_apikey = req.params.apikey === (config.apiserver.apikey || config.handler_callback_server.apikey);

      if (res.locals.has_valid_apikey) {
          next();
      }
      else {

          res.end('APISERVER: Invalid apikey');

      }
  }
  
  function onIncomingSms(req, res) {
      res.end('OK');

  
      if (!req.query.number) return;

      const numberWithSuffix = req.query.number.replace(/^\+/, '') + (config.number_suffix || '');

      partnerLastSeen.set(req.query.number, req.query.modem_imsi);

      history.push({
          ts: req.query.ts || moment().format('YYYY-MM-DD HH:mm:ss'),
          modem: {
              name: req.query.modem,
              imsi: req.query.modem_imsi,
              msisdn: req.query.modem_msisdn,
          },
          direction: 'INCOMING',
          partner: req.query.number,
          message: req.query.msg,
      });

      /*

      modems.set({
          name: req.query.modem,

          device: req.query.modem_device,

          imsi: req.query.modem_imsi,
          msisdn: req.query.modem_msisdn,

          networkId: req.query.modem.network_id,
          networkName: req.query.modem_network_name,
          signalStrength: req.query.modem_signal_strength,

          uptime: req.query.uptime,

          reportIp: req.query.report_ip || req.ip,
          reportPort: req.query.report_port,
          reportApikey: req.query.report_apikey,

          reportPathSms: req.query.report_path_sms || '/sms',

      });

      */

      logger.info('APISERVER: Incoming SMS', { modem: req.query.modem, from: req.query.number, from_with_suffix: numberWithSuffix, msg: req.query.msg });

      messagingService.onIncomingMessage({
          me: req.query.modem,
          partner: numberWithSuffix,

          partner_raw: req.query.number,

          msg: req.query.msg,
          origin_label: `IMSI_${req.query.modem_imsi || 'UNKNOWN'}`,
          origin_transport: 'SMS',
          origin_partner: req.query.number,
          do_not_forward_to_core: req.query.number.indexOf('+') !== 0,

      });

  }

  async function pageHistory(req, res) {
      res.json(await history.dump());

  }

  app.use(function(req, res, next) {

      if ( 
          req && req.path && typeof req.path === 'string' 
          && (
              req.path.search(/\/modems$/) >= 0 
              || req.path.search(/\/modems\/set$/) >= 0 
          )
      ) {

          next();
          return;
      }
      

      logger.verbose('APISERVER: Incoming http request', { ip: req.ip, path: req.path, url: req.url });

      next();
  })

  app.use('/apikey/:apikey', apikeyChecker);
  app.get('/apikey/:apikey/on-sms', onIncomingSms);
  app.get('/apikey/:apikey/inbox', onIncomingSms);
  app.get('/apikey/:apikey/on-sms/inbox', onIncomingSms);

  app.get('/apikey/:apikey/history', pageHistory);

  app.use('/apikey/:apikey/modems', routerModems);

  const listenPort = (config && config.apiserver && config.apiserver.listen_port ? config.apiserver.listen_port : null)
      || (config && config.handler_callback_server ? config.handler_callback_server.listen_port : null);
  
  if (listenPort) {
      app.listen(listenPort, () => {
          logger.info('HTTP Handler Callback server listening on port ' + listenPort);
      });
  } else {
      logger.warn('Undefined config.apiserver.listen_port for APISERVER. Not listening for command.');
  }