var express = require('express');
var router = express.Router();
var RoomModel = require('../schemas/room');
var changeReadyState = (req, res, exit) =>{
    RoomModel.findOne({_id: req.session.roomId}, function (err, doc){    
        if (err) {
            res.status(500).send(err)
        } else {
            //finds player by id and changes ready state
            let updatedPlayers = doc.players;
            let index = updatedPlayers.findIndex( 
                player => (player._id).toString() == (req.session.playerId).toString()
            );
            if(!exit) updatedPlayers[index].ready = !updatedPlayers[index].ready;
            else updatedPlayers[index].ready = false;
            const updatedDoc = {
                players: updatedPlayers
            }
            if(updatedPlayers.filter(player => player.ready).length >= 2){
                updatedDoc.started = true;
                updatedDoc.players[0].nowMoving = true;
            }
            
            RoomModel.findOneAndUpdate({
                _id: req.session.roomId
            }, updatedDoc, function(err, doc){
                if (err){ 
                    console.log(err) 
                } 
                else{ 
                    console.log("Updated Docs : ", doc); 
                }  
            });
            res.status(200).send("Ready!");
        }    
    });        
}

//changing status of player to ready for game
router.post('/ready', function (req, res){
    changeReadyState(req, res, false)
});

//deleting user in case he left before game started
router.post('/exit', function(req,res){
    changeReadyState(req,res, true)
});

//return session data
router.get('/', (req,res)=>{
    // If session exist return sessions data to move player to game when he backs to site 
    if(req.session){
      res.send({
        color: req.session.color,
        playerId: req.session.playerId,
        roomId: req.session.roomId,
      })
    }else{
      res.end();
    }
});

module.exports = router;