w20-cv3

gistfile1.coffee

storage = 
	books: 
		1:
			"name" : "Nazev"
			"isbn" : "123556"
			"publisher" : "/publisher/1"
			"author" : "/author/2"
		2:
			"name" : "Nazev"
			"isbn" : "123556"
			"publisher" : "/publisher/1"
			"author" : "/author/1"

	publisher:
		1:
			"name" : "Publisher Name"
			"country" : "Country"
			"books" : "/books?publisher=1"
	author:
		2:
			"name" : "author name"
			"books" : "/books?author=2"




http = require "http"

server = http.createServer (req, res) ->
	res.setHeader 'Content-Type', "application/json"
	req.data = ""

	req.on "data", (data)->
		req.data += data

	req.on "end", ()->
		if req.url.match /^\/books\/?$/
			return unless methodRequired req, res, ["GET", "POST"]
			if req.method == "POST"
				id = 0
				while (id = Math.ceil Math.random()*1000) of storage.books
					pass

				storage.books[id] = JSON.parse req.data
				res.setHeader "Location", "/books/"+id

			if req.method == "GET"
				res.write JSON.stringify ({
						name: book.name
						detail : "/books/"+id
					} for id, book of storage.books)

		else if match = req.url.match /^\/books\/?\?author=([0-9]+)$/
			return unless methodRequired req, res, ["GET"]
			author_id = match[1]
			res.write JSON.stringify ({
					name: book.name
					detail : "/books/"+id
				} for id, book of storage.books when book.author == "/author/"+author_id)

		else if match = req.url.match /^\/books\/?\?publisher=([0-9]+)$/
			return unless methodRequired req, res, ["GET"]
			publisher_id = match[1]
			res.write JSON.stringify ({
					name: book.name
					detail : "/books/"+id
				} for id, book of storage.books when book.publisher == "/publisher/"+publisher_id)

		else if match = req.url.match /^\/books\/([0-9]+)$/
			return unless methodRequired req, res, ["GET"]
			id = match[1]
			if id of storage.books
				res.write JSON.stringify storage.books[id]
			else
				res.statusCode = 404

		else if match = req.url.match /^\/publisher\/([0-9]+)$/
			return unless methodRequired req, res, ["GET"]		
			id = match[1]
			if id of storage.publisher
				res.write JSON.stringify storage.publisher[id]
			else
				res.statusCode = 404

		else if match = req.url.match /^\/author\/([0-9]+)$/
			return unless methodRequired req, res, ["GET"]
			id = match[1]
			if id of storage.author
				res.write JSON.stringify storage.author[id]
			else
				res.statusCode = 404
		else 
			res.writeHead 400

		res.end()
		return

methodRequired = (req, res, methods) ->
	if req.method not in methods
		res.writeHead 405
		return false
	return true

server.listen 8080