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@muralisr
Created March 27, 2017 17:42
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dexecure-1e28bf0258-01.js
var dexecure = {
"server": "https://withjoy.dexecure.net/",
"firstPartyDomain": [
"dev-media.withjoy.com",
"rehearsal-media.withjoy.com",
"dev.withjoy.com",
"rehearsal.withjoy.com",
"ceremony-media.withjoy.com",
"withjoy.com"
],
"confirmedImageDomains": [
"dev-media.withjoy.com",
"rehearsal-media.withjoy.com",
"ceremony-media.withjoy.com"
],
"optimisationsEnabled": true,
"debugMode": false,
"imageMatchRegex": "\\.jpe?g|\\.png|\\.css|\\.js"
};"use strict";function urlContainsSignature(e){var r=e.substring(e.lastIndexOf("/")+1);return r=r.toLowerCase(),r.includes("se")&&r.includes("st")&&r.includes("sp")&&r.includes("sv")&&r.includes("sr")&&r.includes("sig")}
function separateSignatureAndURL(e){
var r=e.substring(e.lastIndexOf("/")+1),t=e.substring(0,e.lastIndexOf("/"));
return{potentialURL:t,potentialSignature:r}}
function convertToDexecureURL(e){var r={
"rehearsal-media.withjoy.com": "d171kkocp64eig.cloudfront.net",
"dev.withjoy.com": "d218ixx1cwqp18.cloudfront.net",
"dev-media.withjoy.com":"d2yhjivysbovll.cloudfront.net",
"rehearsal.withjoy.com": "d25rpokoeorypg.cloudfront.net",
"ceremony-media.withjoy.com": "d31ikebgmilz0f.cloudfront.net",
"withjoy.com": "d2ytcdhzgn2xcf.cloudfront.net"},
t=new URL(e);for(i in r)if(i.toLowerCase()==t.host.toLowerCase())return e.replace(i,r[i]);return e}function isDefiniteImageURL(e){for(var r=new URL(e),t=dexecure.confirmedImageDomains.length-1;t>=0;t--)if(dexecure.confirmedImageDomains[t].toLowerCase()==r.host.toLowerCase())return!0;return!1}function isFirstPartyDomain(e){var r=new URL(e),t=dexecure.firstPartyDomain;if(!t)return dexecure.debugMode&&console.log("firstPartyDomain is null"),!1;for(var n=t.length-1;n>=0;n--)if(t[n].toLowerCase()==r.host.toLowerCase())return!0;return dexecure.debugMode&&console.log("firstPartyDomain is false for ",e),!1}dexecure.optimisationsEnabled&&(self.addEventListener("install",function(e){e.waitUntil(self.skipWaiting())}),self.addEventListener("activate",function(e){e.waitUntil(self.clients.claim())}),self.addEventListener("fetch",function(e){var r={};e.request.headers.has("Accept")&&(r.Accept=e.request.headers.get("Accept"));var t=new Headers(r),n=new RegExp(dexecure.imageMatchRegex,"i");if((isDefiniteImageURL(e.request.url.toLowerCase())||n.test(e.request.url.toLowerCase()))&&"get"==e.request.method.toLowerCase()&&isFirstPartyDomain(e.request.url)){var o=convertToDexecureURL(e.request.url),i="";if(urlContainsSignature(o)){dexecure.debugMode&&console.log("url contains signature");var s=separateSignatureAndURL(o);dexecure.debugMode&&console.log("separatedComponents is ",s),o=s.potentialURL,i=s.potentialSignature,o=decodeURIComponent(o)}dexecure.debugMode&&(console.log("dexecureURL is ",o),console.log("signatureComponent is ",i),console.log("Modified url is ",o)),i&&i.length>0&&(t.append("signaturepresent","true"),t.append("signatureseparator","/"),t.append("signature",i)),e.respondWith(fetch(o,{mode:"cors",headers:t}).then(function(r){if(r.ok)return r;throw dexecure.debugMode&&console.log("Responding with original image as optimiser was not reachable ",e.request.url),new Error("Unable to fetch optimised image")}).catch(function(r){return dexecure.debugMode&&(console.log("Sending original image as an error occured when trying to optimise ",e.request.url),console.log("The error was ",r)),fetch(e.request)}))}}));
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