/***** index.js *****/
const express = require('express');
const ticket = require('./ticket');
var app = express();

app.get('/index.html', function(req,res) {
    console.log("accessed the index.html node page");
    console.log("proxyRestUri: " + req.query.proxyRestUri);
    console.log("targetId: " + req.query.targetId);
    ticket.get_ticket_redirect(req.query.proxyRestUri, req.query.targetId, function(redirectUrl){
        console.log("Redirecting to "+redirectUrl);
        res.redirect(redirectUrl);
    });
});

app.use('/', express.static('public'));

app.listen(3000, function() {
    console.log("Listening on port 3000");
});

/***** ticket.js *****/
var fs          = require('fs');
var request = require('request');

//define certificate folder
var directory = "./";

var get_ticket_redirect = function(proxyRestUri, targetId, callback){
    
    //set up request options
    var options = {
      uri: proxyRestUri + 'ticket?xrfkey=somerandomstring',
      headers: {'content-type': 'application/json',
      'X-Qlik-xrfkey': 'somerandomstring',
      'X-Qlik-user': 'UserDirectory=INTERNAL;UserId=sa_api'
        },
      method: 'POST',
      body: {
      "UserDirectory": "QAD",
      "UserId": "djx",
      "Attributes": [],
      "TargetId": targetId
    },
    json: true,
      ca: fs.readFileSync(directory+ "root.pem"),
      key: fs.readFileSync(directory+"client_key.pem"),
      cert: fs.readFileSync(directory+"client.pem"),
      rejectUnauthorized: false
    };
    
    //send request
    request(options, function (error, response, body) {
        if(error) 
        {
            console.log('Error: '+error);
            console.log(response);
        } 
        else 
        {
            console.log("== Got a ticket ==");
            console.log("Ticket: " + response.body.Ticket);
            console.log("TargetUri: " + response.body.TargetUri);
            callback(response.body.TargetUri + "?QlikTicket=" + response.body.Ticket); // This is the redirect URL!
        }
    });
    
}

module.exports = {
    get_ticket_redirect: get_ticket_redirect
}