# Resource class path = require 'path' _ = require 'lodash' Promise = require 'bluebird' http = require 'http' Request = require './request' # This is incorrect Response = require './response' RegExp.quote = (str) -> str.replace /([.?*+^$[\]\\(){}|-])/g, "\\$1" module.exports = class Resource constructor: (options) -> @resources = [] @methods = {} @uses = [] @options = options or {} # Define /end/ function for a method on this resource method: (method, uses..., fn) -> m = method.toUpperCase() if @methods[m]? throw new Error "Duplicate #{m} handler set!" @methods[m] = uses.concat [fn] this # Chaining # Add a method to run for ALL request (in/passing) this resource use: (fn) -> @uses.push fn this # Chaining # Define a new resource point resource: (args...) -> # If it is a RegExp, do other things if args[0] instanceof RegExp [uriRegExp, parameters] = args parameters ?= [] if parameters not instanceof Array parameters = [parameters] # Else, generate the regexp and parameters from url else if not args[0]? or args[0] is '' throw new Error "First argument of .resource must be a non-empty string!" uri = path.join args... # Remove slash in front if uri.indexOf('/') is 0 uri = uri.slice 1 # Split all seperate segments parameters = [] PARAMREG = /([^/]+)/ uri = '^\\/' + uri.split('/').map (segment) -> if segment.indexOf(':') is 0 # Parameter parameters.push segment.slice(1) PARAMREG.source else # Just a string literal RegExp.quote segment .join('\\/') # Join with escaped slashes uriRegExp = new RegExp uri resource = new Resource @resources.push resource: resource uriRegExp: uriRegExp paramNames: parameters resource # Alias for ::resource res: @::resource # Get request from listening or from a parent resource _bubble: (req, response) -> # Enable/Disable hall if this resource is supposed to for key,value of @options response.options[key] = value url = req.url.match(/^([^?]*)\??.*$/)[1] #console.log '\nGot a request:', req promise = Promise.bind(response).return(req) @uses.forEach (use) -> promise = promise.then(use).return(req) promise.then => # Check resources for a match matching = _.find @resources, (resource) -> url.match(resource.uriRegExp)? # If no match, error! if not matching? # Check if it could be for this resource if ['', '/'].indexOf(url) isnt -1 # Request is for this resource! if not @methods[req.method]? throw new Error "Method not allowed!" promise = Promise.bind(response) @methods[req.method].forEach (fn) -> promise = promise.return(req).then(fn) return promise # If not, DIE! throw new Error "Resource not found!" match = url.match matching.uriRegExp # Yes, I know # Get the params params = req.params ||= {} # Get the already set params (or make a new empty object) for paramname, key in matching.paramNames params[paramname] = match[key+1] # Update the url req.url = url.slice match[0].length # Let it bubble up! matching.resource._bubble req, response # First bubble in a chain, does some extra stuff _forgeRequest: (req) -> req._url = req.url ?= '/' # Save origional url req.method ?= 'GET' # TODO: Check for existance of the resource:method first response = new Response req, @debug # Placeholder for the real response response.setBody Promise.try(@_bubble, [req, response], this) # Set a certain option in the resource. # Subresources may overwrite this, as this also may overwrite super resources. set: (option, value) -> if not value? delete @options[option] else @options[option] = value # Change this resource into a server listen: (args...) -> @_server = http.createServer (req, res) => # Go up the tree, all the way @_forgeRequest(req).then (response) -> response.applyTo res .listen args... ['get', 'post', 'put', 'delete'].forEach (method) -> Resource::[method] = (args...) -> @method method, args... # PLUGINS, WILL MOVE THEM TO THEIR OWN FILE formidable = require 'formidable' Resource.multipartBodyParser = (opts) -> opts ?= {} (req) -> if req.contentType isnt "multipart/form-data" # or (req.getContentLength() is 0 and not req.isChunked()) return form = new formidable.IncomingForm() ### form.keepExtensions = (if opts.keepExtensions then true else false) form.onPart = onPart = (part) -> if part.filename and options.multipartFileHandler options.multipartFileHandler part, req else if not part.filename and options.multipartHandler options.multipartHandler part, req else form.handlePart part ### new Promise (yell, cry) -> form.parse req, (err, fields, files) -> if err? return cry err yell [fields, files] .spread (fields, files) -> req.body = fields req.files = files .catch (err) -> #new BadRequestError(err.message) throw err querystring = require("querystring") Resource.formBodyParser = -> (req) -> if req.contentType isnt 'application/x-www-form-urlencoded' return req.loadBody().then (body) -> params = querystring.parse body.toString() #req._body = req.body req.body = params .catch (e) -> #throw new errors.InvalidContentError(e.message) throw new Error "Invalid content" Resource.jsonBodyParser = -> (req) -> if req.contentType isnt 'application/json' return if ['POST', 'PUT'].indexOf(req.method) is -1 return req.loadBody().then (body) -> try req.body = JSON.parse body catch e console.log 'JSON ERROR :\'(', e Resource.bodyParser = -> json = Resource.jsonBodyParser() multipart = Resource.multipartBodyParser() form = Resource.formBodyParser() (req) -> Promise.all [ form(req), json(req), multipart(req) ] Resource.authorizationParser = (options) -> (req) -> # Fill to prevent /nullpoint/ errors req.authorization = {} unless req.headers.authorization return [scheme, credentials] = req.headers.authorization.split " ", 2 if not credentials? throw new Error "HTTP:400 Invalid Authorization header!" # Fill the authorization req.authorization = scheme: scheme.toLowerCase() credentials: credentials raw: scheme.toLowerCase() + " " + credentials # Long ago, there was a code to parse Basic auth. # But then the basic auth was to basic, so it went home. # The code had no use anymore, and commited suicide. # Rest in peace, basic auth parse code.