var User       = require('../models/user.server.model'),
    cloudinary  = require('cloudinary'),
    gravatar    = require('gravatar'),
    secrets     = require('../../config/secrets'),
    token       = require('../../config/token');

module.exports = {
  /**
   * Welcome Notice
   * @param  req
   * @param  res
   * @return Void
   */
  welcome: function(req, res){
    return res.status(200).json({ message: 'Welcome to Yourtube Api'});
  },

  /**
   * Register User with Full Name, Email and password
   * @param  req
   * @param  res
   * @return Void
   */
  registerUser: function(req, res) {

    User.findOne({ email: req.body.email }, '+password', function(err, existingUser) {
      if (existingUser) {
        return res.status(409).json({ message: 'Email is already taken' });
      }

      // Obtain the avatar from gravatar service
      var secureImageUrl  = gravatar.url(req.body.email, {s: '200', r: 'x', d: 'retro'}, true);

      var user = new User({
        fullName: req.body.fullName,
        email: req.body.email,
        password: req.body.password,
        user_avatar: secureImageUrl
      });

      user.save(function(err, result) {
        if (err) {
          res.status(500).json({ message: err.message });
        }
        res.send({ token: token.createJWT(result) });
      });
    });
  },

  /**
   * Fetch Logged In User Details
   * @param   req
   * @param   res
   * @param   next
   * @return  Void
   */
  getLoggedInUserDetail: function(req, res) {
    User.findById(req.user, function(err, user) {
      res.send(user);
    });
  },

  /**
   * Update Logged In User Details
   * @param   req
   * @param   res
   * @return  json | void
   */
  updateLoggedInUserDetail: function(req, res) {
    User.findById(req.user, function(err, user) {
      if (!user) {
        return res.status(400).send({ message: 'User not found' });
      }

      user.fullName = req.body.fullName || user.fullName;
      user.email    = req.body.email || user.email;

      user.save(function(err) {
        res.status(200).send({ message: 'Profile Update Succesfully'});
      });
    });
  },

  /**
   * Authenticate a User via Email and Password
   * @param  req
   * @param  res
   * @return json
   */
  authenticate: function(req, res) {

    User.findOne({ email: req.body.email }, function(err, user) {
      if (!user) {
        return res.status(401).json({ message: 'Invalid Email' });
      }

      user.comparePassword(req.body.password, function(err, isMatch) {
        if (!isMatch) {
          return res.status(401).json({ message: 'Invalid Password' });
        }
        res.send({ token: token.createJWT(user) });
      });
    });
  }
};