import * as jwt from 'jsonwebtoken';

export class Jwt {
  private secretKey = 'xxa94c1883329b47babf53df568c11d26569290c912a54d6bf884136e3ef4d120e';

  sign(playload: any) {
    let token = jwt.sign(playload, this.secretKey, {
      expiresIn: '1d'
    });
    return token;
  }

  verify(token: string) {
    return new Promise((resolve, reject) => {
      jwt.verify(token, this.secretKey, (err, decoded) => {
        if (err) {
          reject(err)
        } else {
          resolve(decoded)
        }
      });
    });
  }

}

////////////////////
// app.ts //
require('dotenv').config();

import { MySqlConnectionConfig  } from 'knex';
import Knex = require('knex');

import { Jwt } from './models/jwt';
const jwt = new Jwt();

let checkAuth = (req, res, next) => {
  let token: string = null;

  if (req.headers.authorization && req.headers.authorization.split(' ')[0] === 'Bearer') {
    token = req.headers.authorization.split(' ')[1];
  } else if (req.query && req.query.token) {
    token = req.query.token;
  } else {
    token = req.body.token;
  }

  jwt.verify(token)
    .then((decoded: any) => {
      req.decoded = decoded;
      next();
    }, err => {
      return res.send({
        ok: false,
        error: 'No token provided.',
        code: 403
      });
    });
}


// MySQL Connection

let connection: MySqlConnectionConfig = {
  host: process.env.DB_HOST,
  port: process.env.DB_PORT,
  database: process.env.DB_NAME,
  user: process.env.DB_USER,
  password: process.env.DB_PASSWORD,
  multipleStatements: true,
  debug: false
}

let db = Knex({
  client: 'mysql',
  connection: connection
});

app.use((req, res, next) => {
  req.db = db;
  next();
});

//