NewJerseyDot.js

'use strict';
const fs = require( 'fs' );
const https = require( 'https' );

const cameras = JSON.parse( fs.readFileSync( '../cameras/USA.json' ) );

https.request( 'https://511nj.org/api/client/camera/GetCameraDataByTourId?tourid=3', ( res ) => {
	let data = '';

	res.on( 'data', ( chunk ) => {
		data += chunk;
	});

	res.on( 'end', () => {
		Compile( JSON.parse( data ) );
	});
}).end();

class Camera {
	constructor ( cam ) {
		const parsedObj = videoOrImage( cam );

		this.location = {
			decsription: cam.name + ' ' + cam.devicedescription,
			latitude: cam.latitude,
			longitude: cam.longitude
		};
		this.url = parsedObj.imageOnly ? parsedObj.imageSrc : parsedObj.streamSrc;
		this.encoding = parsedObj.imageOnly ? 'JPEG' : 'H.264';
		this.format = parsedObj.imageOnly ? 'IMAGE_STREAM' : 'UNIQUE_NEWJERSEYDOT';
		this.marked_for_review = cam.StopCameraFlag;
	}
}

function videoOrImage ( cam ) {
	let imageOnly = true;
	let streamSrc, imageSrc;
	for ( const camType of cam.CameraMainDetail ) {
		if ( camType.cameratype === 'Video' && !camType.URL.includes( 'Camera-Unavailable.png' ) ) {
			imageOnly = false;
			streamSrc = camType.URL.replace( 'https://', 'http://' ) + '?otp=';
			//http for cross domain streaming
			//Wowza otp key can be obtained by making requests to "https://511nj.org/api/client/camera/getHlsToken?Id=2"
			//Required for streaming
			//I have not found a way to get the turnkpike streams to work cross domain https://njtpk-wink.xcmdata.org/turnpike/hls/....
		} else {
			imageSrc = camType.URL; // These all appear to be "image unavailable" images
		}
	}

	return {
		imageOnly: imageOnly,
		imageSrc: imageSrc,
		streamSrc: streamSrc
	};
}


function Compile ( data ) {
	if ( !cameras['New Jersey'] ) {
		cameras['New Jersey'] = {};
	}

	for ( const cam of data.Data.CameraData ) {
		if ( !cameras['New Jersey'].other ) {
			cameras['New Jersey'].other = [];
		}

		cameras['New Jersey'].other.push( new Camera( cam ) );
	}

	fs.writeFileSync( '../cameras/USA.json', JSON.stringify( cameras, null, 2 ) );
}