movies.js

var express = require('express');
var router = express.Router();
var movies = [
    {id: 101, name: "Fight Club", year: 1999, rating: 8.1},
    {id: 102, name: "Inception", year: 2010, rating: 8.7},
    {id: 103, name: "The Dark Knight", year: 2008, rating: 9},
    {id: 104, name: "12 Angry Men", year: 1957, rating: 8.9}
];

//Routes will go here

// getting all the data
router.get('/', function(req, res){
    res.json(movies);
});

//get specific data using id

router.get('/:id([0-9]{3,})', function(req, res){
    var currMovie = movies.filter(function(movie){
        if(movie.id == req.params.id){
            return true;
        }
    });
    if(currMovie.length == 1){
        res.json(currMovie[0])
    }
    else{
        res.status(404);//Set status to 404 as movie was not found
        res.json({message: "Not Found"});
    }
});

//this use to post data

router.post('/', function(req, res){
    //Check if all fields are provided and are valid:
    if(!req.body.name ||
        !req.body.year.toString().match(/^[0-9]{4}$/g) ||
        !req.body.rating.toString().match(/^[0-9]\.[0-9]$/g)){
        res.status(400);
        res.json({message: "Bad Request"});
    }
    else{
        var newId = movies[movies.length-1].id+1;
        movies.push({
            id: newId,
            name: req.body.name,
            year: req.body.year,
            rating: req.body.rating
        });
        res.json({message: "New movie created.", location: "/movies/" + newId});
    }
});

//this is the put functionality for the project

router.put('/:id', function(req, res){
    //Check if all fields are provided and are valid:
    if(!req.body.name ||
        !req.body.year.toString().match(/^[0-9]{4}$/g) ||
        !req.body.rating.toString().match(/^[0-9]\.[0-9]$/g) ||
        !req.params.id.toString().match(/^[0-9]{3,}$/g)){
        res.status(400);
        res.json({message: "Bad Request"});
    }
    else{
        //Gets us the index of movie with given id.
        var updateIndex = movies.map(function(movie){
            return movie.id;
        }).indexOf(parseInt(req.params.id));
        if(updateIndex === -1){

            //Movie not found, create new
            movies.push({
                id: req.params.id,
                name: req.body.name,
                year: req.body.year,
                rating: req.body.rating
            });
            res.json({message: "New movie created.", location: "/movies/" + req.params.id});

        }else{
            //Update existing movie
            movies[updateIndex] = {
                id: req.params.id,
                name: req.body.name,
                year: req.body.year,
                rating: req.body.rating
            };
            res.json({message: "Movie id " + req.params.id + " updated.", location: "/movies/" + req.params.id});
        }
    }
});

//this will used to create a delete rought

router.delete('/:id', function(req, res){
    var removeIndex = movies.map(function(movie){
        return movie.id;
    }).indexOf(req.params.id); //Gets us the index of movie with given id.
    if(removeIndex === -1){
        res.json({message: "Not found"});
    }else{
        movies.splice(removeIndex, 1);
        res.send({message: "Movie id " + req.params.id + " removed."});
    }
});




module.exports = router;