//File: controllers/userController.js
var mongoose = require('mongoose');
var userModel  = mongoose.model('userModel');

var md5 = require('md5');

/* */
var jwt    = require('jsonwebtoken'); // used to create, sign, and verify tokens
var express         = require("express");
var app             = express();
var config = require('../config'); // get our config file
app.set('superSecret', config.secret); // secret variable

var crypto = require('crypto');
/* */

//GET - Return all Users in the DB
exports.findAllUsers = function(req, res) {
	userModel.find(function(err, users) {
    if(err) res.send(500, err.message);

	//password deletion
	for(var i=0; i<users.length; i++)
	{
		users[i].password="";
		users[i].token="";
		console.log(users[i].password);
	}

    console.log('GET /users');
		res.status(200).jsonp(users);
	});
};

//GET - Return a User with specified ID
exports.findById = function(req, res) {
	userModel.findById(req.params.id, function(err, user) {
    if(err) return res.send(500, err.message);

    console.log('GET /users/' + req.params.id);
	//password deletion
	if(user!=null){
		user.password="";
		users.token="";
	}
		res.status(200).jsonp(user);
	});
};

exports.findUserByUsername = function(req, res) {
    userModel.find({
      username: req.params.username
  }, function(err, user) {

      if (err) throw err;

      if (!user) {
        res.json({ success: false, message: 'no user found' });
    } else if (user) {
          // return the information including token as JSON
          //res.jsonp(user);
		  user.password="";
			users.token="";
          console.log(user);
	  		res.status(200).jsonp(user[0]);


      }

    });
};

//POST - Insert a new User in the DB
exports.addUser = function(req, res) {
	console.log('POST new user, name: ' + req.body.username);
	//console.log(req.body);

	var user = new userModel({
		username: req.body.username,
		password: crypto.createHash('sha256').update(req.body.password).digest('base64'),
	    description:   req.body.description,
	    avatar:   req.body.avatar,
	    mail:   req.body.mail,
		phone: req.body.phone,
		telegram: req.body.telegram
	});
	if(user.username==undefined)
	{
		return res.status(500).jsonp("empty inputs");
	}else if(user.password==undefined)
	{
		return res.status(500).jsonp("empty inputs");
	}else if(user.description==undefined)
	{
		return res.status(500).jsonp("empty inputs");
	}else if(user.avatar==undefined)
	{
		return res.status(500).jsonp("empty inputs");
	}else if(user.mail==undefined)
	{
		return res.status(500).jsonp("empty inputs");
	}

	user.save(function(err, user) {
		if(err) return res.send(500, err.message);
    res.status(200).jsonp(user);
	});
};

/* fav */
exports.addFav = function(req, res) {
	var tokenuser;
	userModel.find({
		token: req.headers['x-access-token']
	}, function(err, users){
		tokenuser=users[0];
	});
	userModel.findById(req.params.userId, function(err, user){

		// first search if user have already said like
		var favRepeated=false;
		for(var i=0; i<user.favs.length; i++)
		{
			if(user.favs[i].username==tokenuser.username)
			{
				favRepeated=true;
			}
		}
		console.log("favRepeated: " + favRepeated);
		if(favRepeated==false)
		{
			//fav
			var fav = {
				userId: tokenuser._id,
				username: tokenuser.username,
				avatar: tokenuser.avatar
			};
			user.favs.push(fav);

			//notification
			var notification = {
				type: "fav",
				otherusername: tokenuser.username,
				description: "user "+tokenuser.username+" favs you",
				date: new Date(),
				link: ""
			};
			user.notifications.push(notification);

			user.save(function(err, user) {
				if(err) return res.send(500, err.message);


				//once saved, send the users json to client
				userModel.find(function(err, users) {
				    if(err) res.send(500, err.message);
						res.status(200).jsonp(users);
				});
			});
		}else{
			userModel.find(function(err, users) {
					if(err) res.send(500, err.message);
					res.status(200).jsonp(users);
			});
		}

	});
};
exports.doUnfav = function(req, res) {
	var tokenuser;
	userModel.find({
		token: req.headers['x-access-token']
	}, function(err, users){
		tokenuser=users[0];
	});

	userModel.findById(req.params.userId, function(err, user){
		for(var i=0; i<user.favs.length; i++)
		{
			if(user.favs[i].username==tokenuser.username)
			{
				user.favs.splice(i, 1);
			}
		}

		user.save(function(err, travel) {
			if(err) return res.send(500, err.message);
			//res.status(200).jsonp(travel);
			userModel.find(function(err, users) {
			    if(err) res.send(500, err.message);
					res.status(200).jsonp(users);
			});
		});
	});
};

//PUT - Update a user already exists
exports.updateUser = function(req, res) {
	userModel.findById(req.params.id, function(err, user) {
		user.username   = req.body.username;
		user.password    = md5(req.body.password);
		user.description = req.body.description;
		user.avatar  = req.body.avatar;
		user.mail = req.body.mail;
		user.phone   = req.body.phone;
		user.telegram = req.body.telegram;

		user.save(function(err) {
			if(err) return res.send(500, err.message);
			user.password="";
			users.token="";
      	res.status(200).jsonp(user);
		});
	});
};

//DELETE - Delete a user with specified ID
exports.deleteUser = function(req, res) {
	userModel.findById(req.params.id, function(err, user) {
		user.remove(function(err) {
			if(err) return res.send(500, err.message);
      		res.status(200).jsonp(req.params.id);
		    console.log('DELETE /users/' + req.params.id);
		})
	});
};


//POST - auth user
exports.login = function(req, res) {
	// find the user
  userModel.findOne({
    username: req.body.username
  }, function(err, user) {

    if (err) throw err;

    if (!user) {
      res.json({ success: false, message: 'Authentication failed. User not found.' });
    } else if (user) {

			req.body.password=crypto.createHash('sha256').update(req.body.password).digest('base64');

      // check if password matches
      if (user.password != req.body.password) {
        res.json({ success: false, message: 'Authentication failed. Wrong password.' });
      } else {

        // if user is found and password is right
        // create a token
        var token = jwt.sign(user, app.get('superSecret'), {
          //expiresInMinutes: 1440 // expires in 24 hours
		  //expiresIn: '60m'
        });
				user.token=token;
				user.save(function(err, user) {
					if(err) return res.send(500, err.message);
					//res.status(200).jsonp(travel);
					console.log(user);
	        // return the information including token as JSON
					user.password="";
	        res.json({
	          success: true,
	          message: 'Enjoy your token!',
	          token: token,
					  avatar: user.avatar,
					  userid: user._id,
						userdata: user
	        });
				});

      }

    }

  });
};