93 lines
2.6 KiB
JavaScript
93 lines
2.6 KiB
JavaScript
'use strict';
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// modules
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const express = require('express');
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const http = require('http');
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const https = require('https');
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const parse = require('node-html-parser').parse;
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// HTTP status codes by name
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const codes = require('./http-codes');
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const routerHandling = require('../middleware/router-handling');
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/**
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* getHtml: REST get request returning HTML page response
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* @param {object} options: http options object
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* @param {function} onResult: callback to pass the results JSON object(s) back
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*/
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const getHtml = (options, onResult) => {
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let port = (options.port === 443) ? https : http;
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let req = port.request(options, (res) => {
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let output = '';
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res.setEncoding('utf8');
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res.on('data', (chunk) => {
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output += chunk;
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});
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res.on('end', () => {
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if (res.statusCode === 301) { // follow redirect
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const location = res.headers.location;
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const baseUrl = ((options.port === 443) ? 'https' : 'http') + '://' + options.host;
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options.path = location.replace(baseUrl, '');
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getHtml(options, (status, redirectData) => {
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onResult(status, redirectData);
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});
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} else {
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onResult(res.statusCode, output);
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}
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});
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res.on('error', (err) => {
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onResult(500, err);
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});
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});
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req.end();
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};
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const defaulUserReqOptions = {
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host: 'opt4.net',
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port: 443,
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path: '/dashboard/index.php?user/',
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method: 'GET',
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};
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const slotting = new express.Router();
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// routes **********************
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slotting.route('/user/:id')
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.get((req, res, next) => {
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const userId = req.params.id;
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const options = Object.assign({}, defaulUserReqOptions);
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options.path = options.path.concat(userId);
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getHtml(options, (status, targetRes) => {
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if (status !== codes.success) {
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const err = new Error('Can not resolve user from remote service');
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err.status = codes.notfound;
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return next(err);
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}
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const root = parse(targetRes);
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const userNameEl = root.querySelector('.contentTitle');
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let user = {
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name: userNameEl.childNodes[0].rawText.trim(),
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};
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res.locals.items = user;
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res.locals.processed = true;
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return next();
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});
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})
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.all(
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routerHandling.httpMethodNotAllowed
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);
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// this middleware function can be used, if you like or remove it
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// it looks for object(s) in res.locals.items and if they exist, they are send to the client as json
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slotting.use(routerHandling.emptyResponse);
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module.exports = slotting;
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