docs/hack/releaser/cloudfront-lambda-redirects.js

57 lines
1.7 KiB
JavaScript

'use strict';
exports.handler = (event, context, callback) => {
//console.log("event", JSON.stringify(event));
const request = event.Records[0].cf.request;
const requestUrl = request.uri.replace(/\/$/, "")
const redirects = JSON.parse(`{{.RedirectsJSON}}`);
for (let key in redirects) {
const redirectTarget = key.replace(/\/$/, "")
if (redirectTarget !== requestUrl) {
continue;
}
//console.log(`redirect: ${requestUrl} to ${redirects[key]}`);
const response = {
status: '301',
statusDescription: 'Moved Permanently',
headers: {
location: [{
key: 'Location',
value: redirects[key],
}],
},
}
callback(null, response);
return
}
const redirectsPrefixes = JSON.parse(`{{.RedirectsPrefixesJSON}}`);
for (let x in redirectsPrefixes) {
const rp = redirectsPrefixes[x];
if (!request.uri.startsWith(`/${rp['prefix']}`)) {
continue;
}
let newlocation = "/";
if (rp['strip']) {
let re = new RegExp(`(^/${rp['prefix']})`, 'gi');
newlocation = request.uri.replace(re,'/');
}
//console.log(`redirect: ${request.uri} to ${redirectsPrefixes[key]}`);
const response = {
status: '301',
statusDescription: 'Moved Permanently',
headers: {
location: [{
key: 'Location',
value: newlocation,
}],
},
}
callback(null, response);
return
}
callback(null, request);
};