A sample Papiel reader written in pure node.js

papiel-reader.js

#!/bin/node

/**
 * Launch with `node papiel-reader.js`
 */

var http = require('http'),
    https = require('https'),
    fs = require('fs'),
    url = require('url');

// Send a manifest to Papiel
var isSSL = node.env.SSL || false,
    port = node.env.PORT || ((isSSL) ? 8443 : 8000),
    endpoint = "http" + ((isSSL) ? 's' : '') + '://' + (node.env.HOST || 'localhost') + ':' + port + '/',
    manifest = {
      name: "papiel-test",
      dependencies: [],
      optional_dependencies: [],
      metadata: [],
      optional_metadata: [],
      returns: [
        "hello"
      ],
      optional_returns: [],
      endpoint: endpoint
    },
    sendOpts = {
      hostname: node.env.PAPIEL_HOST || 'api.papiel.fr',
      port: node.env.PAPIEL_PORT || 443,
      path: '/reader?client_id=' + node.env.CLIENT_ID + '&client_secret=' + node.env.CLIENT_SECRET,
      method: 'POST',
      headers: {
        'Content-Type': 'application/x-www-form-urlencoded'
      }
    };
var req = https.request(sendOpts);
req.end(JSON.stringify(manifest));

// Create an asynchronous processor
function processor (data, cb) {
  cb({ hello: "world" });
}

// Server waiting for documents
function responder (req, res) {
  var buffer = "";
  req.on('data', function (data) {
    buffer += data;
  });
  req.on('end', function () {
    res.end();
    
    var data = JSON.parse(buffer),
        parsedURL = url.parse(data['return_callback']),
        resOpts = {
          hostname: parsedURL.host,
          port: parsedURL.port || 443,
          path: parsedURL.path + '?client_id=' + node.env.CLIENT_ID + '&client_secret=' + node.env.CLIENT_SECRET,
          method: 'POST',
          headers: {
            'Content-Type': 'application/x-www-form-urlencoded'
          }
        };
    processor(data, function (newData) {
      var returnReq = https.request(resOpts);
      returnReq.end(JSON.stringify(newData));
    });
  });
}

if(isSSL) {
  var options = {
    key: fs.readFileSync(node.env.SSL_KEY),
    cert: fs.readFileSync(node.env.SSL_CERT),
  };
  
  https.createServer(options, responder).listen(port);
} else {
  http.createServer(responder).listen(port);
}