'use strict';

var Promise = require('bluebird');
var GoogleSpreadsheet = require('google-spreadsheet');
var async = require('async');
var moment = require('moment');
var Joi = require('joi');

var slack = require('../services/slack');
var config = require('../lib/config');
var validateRequest = require('../utils/validateRequest');

function log(message) {
  console.log(message);
  slack.createMessage(message);
}

function addNewMemberToSheets(data, callback) {
  var { name, email, address, postcode, city, handle } = data;
  var doc = new GoogleSpreadsheet(config.google.spreadsheetId);

  async.waterfall(
    [
      function setAuth(cb) {
        console.log('Start Google Spreadsheed auth.');
        doc.useServiceAccountAuth(
          {
            client_email: config.google.clientEmail,
            private_key: config.google.privateKey,
          },
          err => cb(err),
        );
      },
      function getInfoAndWorksheets(cb) {
        console.log('Start Google Spreadsheet info fetch.');
        doc.getInfo(function(err, info) {
          if (err) {
            cb(err);
          } else {
            cb(null, info.worksheets[0]);
          }
        });
      },
      function addRow(sheet, cb) {
        console.log('Start Google Spreadsheet row write.');
        sheet.addRow(
          {
            jäsenmaksu: false,
            'koko nimi': name,
            liittymispäivä: moment().format('DD.MM.YYYY'),
            lisääjä: 'Koodiklinikka.fi-api',
            katuosoite: address,
            postinumero: postcode,
            paikkakunta: city,
            slack: handle,
            sähköposti: email,
          },
          cb,
        );
      },
    ],
    callback,
  );
}

module.exports = function(app) {
  /*
   * POST /membership
   * Endpoint for adding a new member to the association
   */

  const schema = Joi.object().keys({
    userInfo: Joi.object().keys({
      name: Joi.string().required(),
      email: Joi.string().email().required(),
      handle: Joi.string().required(),
      address: Joi.string().required(),
      city: Joi.string().required(),
      postcode: Joi.string().required(),
    }),
  });

  app.post('/membership', validateRequest(schema), function(req, res, next) {
    console.log(
      `Start membership addition with body: ${JSON.stringify(req.body)}`,
    );

    addNewMemberToSheets(req.body.userInfo, err => {
      if (err) {
        log(
          `Storing membership info FAILED for: ${JSON.stringify(
            req.body.userInfo.email,
          )}. Reason: ${err.message}`,
        );
        res.status(200).send('membership_storage_error');
        return;
      }
      res.status(200).send('membership_added');
      return;
    });
  });
};