// Using the simplest possible proxying for proxying data located on servers

// can also try express-http-proxy or http-proxy-middleware

//const proxy = require('proxy-middleware');

const proxy = require('express-http-proxy');

const url = require('url');

var proxyRules = [

{ path: '/scans/index', targetUrl: 'http://localhost:5001/index' },

{ path: '/scans/monitor', targetUrl: 'http://localhost:5001' },

// { path: '/scans/index', targetUrl: 'http://localhost:5001/index' },

{ path: '/solr', targetUrl: 'http://localhost/solr' },

];

module.exports = function() {

const app = this;

// Simple proxy rules

for (var i = 0; i < proxyRules.length; i++) {

var proxyRule = proxyRules[i];

// Simple but sometimes add trailing slash due to req.url being enforced to have '/'

// Problematic for redirecting /scans/index

// app.use(proxyRule.path, proxy(proxyRule.targetUrl));

proxyRule.target = url.parse(proxyRule.targetUrl);

proxyRule.targetRoot = url.resolve(proxyRule.targetUrl, '/');

proxyRule.targetPath = proxyRule.target.pathname;

console.log('Proxying: ' + proxyRule.path + ' to ' + proxyRule.targetUrl + ' with '

+ 'host=' + proxyRule.targetRoot + ', path=' + proxyRule.targetPath);

app.use(proxyRule.path, proxy(proxyRule.targetRoot, {

forwardPath: function(pr, req, res) {

var prefix = pr.targetPath;

var path = prefix + (req.originalUrl === req.baseUrl? '':url.parse(req.url).path);

path = path.replace('//', '/');

//console.log('Proxying ' + req.originalUrl + ' to ' + path);

return path;

}.bind(this, proxyRule)

}));

}

};