var express = require ('express'), router = express.Router ();
const constants = require ('../config/constants');
var databaseHelper = require ('../helpers/database');
var amazonHelper = require ('../helpers/amazon');
var bodyParser = require ('body-parser');
var alexa = require ('../components/alexa');

router.get ('/:id', async (req, res, next) => {
  const id = req.params.id;

  if (id.length !== constants.skillIDLength) {
    res.json ([]);
  } else {
    databaseHelper
      .getSkill (id)
      .then (result => {
        res.json (result);
      })
      .catch (err => {
        res.json ([]);
      });
  }
});

router.post ('/:id', bodyParser.json (), async (req, res, next) => {
  let id = req.params.id;
  let dataFromWeb = JSON.stringify (req.body);
  let skill = JSON.parse (dataFromWeb);
  let updateOnAmazon = skill.updateOnAmazon;

  delete skill.updateOnAmazon;
  delete skill._id;

  console.log ('id = ' + id);

  if (id !== '-1') {
    if (updateOnAmazon) {
      amazonHelper
        .updateSkill (skill)
        .then (amazonResult => {
          console.log ('Amazon : ' + amazonResult);
          if (
            amazonResult === constants.amazonResultCodes.ok ||
            amazonResult === constants.amazonResultCodes.accepted
          ) {
            //Skill uploaded, it's ok to update databaseI
            databaseHelper
              .updateSkill (id, skill)
              .then (result => {
                res.json ({result: constants.apiResultCodes.ok, message: ''});
                alexa.updateIntentsJSON ();
              })
              .catch (e => {
                res.json ({
                  result: constants.apiResultCodes.databaseError,
                  message: '',
                });
              });
          } else {
            res.json ({
              result: constants.apiResultCodes.amazonError,
              message: amazonResult,
            });
          }
        })
        .catch (e => {
          res.json ({
            result: constants.apiResultCodes.amazonError,
            message: 'unknown',
          });
        });
    } else {
      databaseHelper
        .updateSkill (id, skill)
        .then (result => {
          res.json ({result: constants.apiResultCodes.ok, message: ''});
          alexa.updateIntentsJSON ();
        })
        .catch (e => {
          res.json ({
            result: constants.apiResultCodes.databaseError,
            message: '',
          });
        });
    }
  } else {
    //no new skills for now
  }
});

module.exports = router;