var User = require('../model/user');
var config = require('../config/database');
var jwt = require('jwt-simple');
var btc = require('bitcoin-address');
var smtp = require('../config/smtp');
var functions = {
  authenticate: function (req, res) {
    User.findOne({
      email: req.body.email
    }, function (err, user) {
      if (err) throw err;

      if (!user) {
        res.status(403).send({
          success: false,
          msg: 'Authentication failed, User not found'
        });
      } else {
        user.comparePassword(req.body.password, function (err, isMatch) {
          if (isMatch && !err) {
            var token = jwt.encode(user, config.secret);
            res.json({success: true, token: token});
          } else {
            return res.status(403).send({
              success: false,
              msg: 'Authenticaton failed, wrong password.'
            });
          }
        })
      }

    })
  },
  addNew: function (req, res) {
    if (!req.body.email) {
      console.log(req.body.email);
      res.json({success: false, msg: 'Enter all values'});
    } else {
      var pass = make_passwd(13, 'qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM1234567890');
      var newUser;
      if (btc.validate(req.body.btc_address)) {
        newUser = User({
          email: req.body.email,
          password: pass,
          btc_address: req.body.btc_address
        });
      } else {
        newUser = User({
          email: req.body.email,
          password: pass,
          btc_address: ''
        });
      }
      console.log(pass);
      smtp.sendMail({
        from: "Sender Name <stefan@plasticjam.com>",
        to: "Recipient Name <"+ req.body.email+">",
        subject: "Your password",
        text: "Here is your password: " + pass
      }, function(error, response){
        if(error){
          console.log(error);
        }else{
          console.log("Message sent: " + response.message);
        }
      });
      newUser.save(function (err) {
        if (err) {
          console.log(err);
          res.json({success: false, msg: 'Failed to save'})
        } else {
          res.json({success: true, msg: 'Successfully saved'});
        }
      })
    }
  },
  getinfo: function (req, res) {
    if (req.headers.authorization && req.headers.authorization.split(' ')[0] === 'Bearer') {
      var token = req.headers.authorization.split(' ')[1];
      var decodedtoken = jwt.decode(token, config.secret);
      return res.json({
        success: true,
        email: decodedtoken.email,
        btc_address: decodedtoken.btc_address
      });
    }
    else {
      return res.json({success: false, msg: 'No header'});
    }
  }
};
var make_passwd = function (n, a) {
  var index = (Math.random() * (a.length - 1)).toFixed(0);
  return n > 0 ? a[index] + make_passwd(n - 1, a) : '';
}
module.exports = functions;