Offline Rendering of @kig's Message presentation app using SlimerJS

messages.js

/*
PDF Generator for @ilmarihei's Awesome "Messsage" Presentation App!

Usage:
./slimerjs messages.js 

You may also need to
- get http://slimerjs.org/
- edit the config variables
- run `convert slides/*.jpg presentation.pdf`

Cheers,
@blurspline

*/

var TARGET = 'https://viewmessage.fhtr.net/?page=view&id=51dad76876241f0200000002'
var SCREEN_SHOT_DELAY = 1000;
var WIDTH = 1024;
var HEIGHT = 768;

console.log("Hello Messages PDF Generator!");

var webpage = require("webpage");
var page = webpage.create();

var downloaded = {};

page.onConsoleMessage = function (msg) {

  console.log(msg);

	var match = msg.match(/Slide[ ](\d+)\/(\d+)/);

	if (match && match.length == 3) {

		if (match[1] in downloaded) return;

		downloaded[match[1]] = true;

		console.log(match);

		setTimeout(function() {
			page.render('slides/' + match[1] +  '.jpg', { format: "jpg", quality: 100 });
			page.sendEvent('keyup', page.event.key.Right);

			if (match[1] == match[2]) {
				console.log('last slide.')
				page.end()
				phantomjs.exit();

				return;
			}
			
		}, SCREEN_SHOT_DELAY);
		
	}
	
};

page.onResourceReceived = function (response) {
    if (response.stage=='end') console.log('downloaded: ' + response.url)
};

page.viewportSize = { width: WIDTH, height: HEIGHT };
page.open(TARGET);